From fe2959c7e6d314cc44cf5472d20b8ac6d5806b51 Mon Sep 17 00:00:00 2001 From: patacongo Date: Wed, 8 Jun 2011 21:10:47 +0000 Subject: More logic for the AVR port git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3684 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/arch/avr/src/at90usb/Make.defs | 11 +- nuttx/arch/avr/src/at90usb/at90usb_config.h | 17 + nuttx/arch/avr/src/at90usb/at90usb_head.S | 7 +- nuttx/arch/avr/src/at90usb/at90usb_lowconsole.c | 169 ++++++ nuttx/arch/avr/src/at90usb/at90usb_lowinit.c | 103 ++++ nuttx/arch/avr/src/at90usb/at90usb_serial.c | 664 ++++++++++++++++++++++ nuttx/arch/avr/src/at90usb/at90usb_timerisr.c | 165 ++++++ nuttx/arch/avr/src/atmega/Make.defs | 11 +- nuttx/arch/avr/src/atmega/atmega_config.h | 22 + nuttx/arch/avr/src/atmega/atmega_head.S | 7 +- nuttx/arch/avr/src/atmega/atmega_lowconsole.c | 174 ++++++ nuttx/arch/avr/src/atmega/atmega_lowinit.c | 103 ++++ nuttx/arch/avr/src/atmega/atmega_serial.c | 718 ++++++++++++++++++++++++ nuttx/arch/avr/src/atmega/atmega_timerisr.c | 165 ++++++ nuttx/arch/avr/src/avr/up_initialstate.c | 110 ++++ nuttx/arch/avr/src/avr/up_irq.c | 108 ++++ nuttx/arch/avr/src/avr/up_schedulesigaction.c | 4 +- nuttx/arch/avr/src/avr32/up_initialstate.c | 6 +- nuttx/arch/avr/src/common/up_assert.c | 154 +++++ 19 files changed, 2701 insertions(+), 17 deletions(-) create mode 100644 nuttx/arch/avr/src/at90usb/at90usb_lowconsole.c create mode 100644 nuttx/arch/avr/src/at90usb/at90usb_lowinit.c create mode 100644 nuttx/arch/avr/src/at90usb/at90usb_serial.c create mode 100644 nuttx/arch/avr/src/at90usb/at90usb_timerisr.c create mode 100644 nuttx/arch/avr/src/atmega/atmega_lowconsole.c create mode 100644 nuttx/arch/avr/src/atmega/atmega_lowinit.c create mode 100644 nuttx/arch/avr/src/atmega/atmega_serial.c create mode 100644 nuttx/arch/avr/src/atmega/atmega_timerisr.c create mode 100644 nuttx/arch/avr/src/avr/up_initialstate.c create mode 100644 nuttx/arch/avr/src/avr/up_irq.c create mode 100644 nuttx/arch/avr/src/common/up_assert.c (limited to 'nuttx/arch/avr') diff --git a/nuttx/arch/avr/src/at90usb/Make.defs b/nuttx/arch/avr/src/at90usb/Make.defs index dcff056b5..e3559c0dc 100644 --- a/nuttx/arch/avr/src/at90usb/Make.defs +++ b/nuttx/arch/avr/src/at90usb/Make.defs @@ -42,10 +42,11 @@ HEAD_ASRC = at90usb_head.S CMN_ASRCS = up_switchcontext.S CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \ up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \ - up_interruptcontext.c up_lowputs.c up_mdelay.c up_modifyreg8.c \ - up_modifyreg16.c up_modifyreg32.c up_puts.c up_releasepending.c \ - up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \ - up_sigdeliver.c up_udelay.c up_unblocktask.c up_usestack.c + up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \ + up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \ + up_puts.c up_releasepending.c up_releasestack.c \ + up_reprioritizertr.c up_schedulesigaction.c up_sigdeliver.c \ + up_udelay.c up_unblocktask.c up_usestack.c # Configuration-dependent common files @@ -56,7 +57,7 @@ endif # Required AT90USB files CHIP_ASRCS = at90usb_exceptions.S -CHIP_CSRCS = +CHIP_CSRCS = at90usb_lowconsole.c at90usb_lowinit.c at90usb_serial.c at90usb_timerisr.c # Configuration-dependent aT90USB files diff --git a/nuttx/arch/avr/src/at90usb/at90usb_config.h b/nuttx/arch/avr/src/at90usb/at90usb_config.h index a39a6b5e2..be3cd54f1 100644 --- a/nuttx/arch/avr/src/at90usb/at90usb_config.h +++ b/nuttx/arch/avr/src/at90usb/at90usb_config.h @@ -45,6 +45,23 @@ /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ +/* USARTs ***************************************************************************/ + +#undef HAVE_USART_DEVICE +#if defined(CONFIG_AVR_USART1) +# define HAVE_USART_DEVICE 1 +#endif + +/* Is there a serial console? There should be at most one defined. It + * could be on any USARTn (but n=1 only for the AT90USB). + */ + +#if defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART1) +# define HAVE_SERIAL_CONSOLE 1 +#else +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef HAVE_SERIAL_CONSOLE +#endif /************************************************************************************ * Public Types diff --git a/nuttx/arch/avr/src/at90usb/at90usb_head.S b/nuttx/arch/avr/src/at90usb/at90usb_head.S index f951bac1d..608595f90 100755 --- a/nuttx/arch/avr/src/at90usb/at90usb_head.S +++ b/nuttx/arch/avr/src/at90usb/at90usb_head.S @@ -66,6 +66,7 @@ ****************************************************************************/ .file "up_nommuhead.S" + .global __start /* Entry point */ .global _sbss /* Start of .bss. Defined by ld.script */ .global _ebss /* End of .bss. Defined by ld.script */ .global _sdata /* Start of .data section in RAM */ @@ -248,9 +249,13 @@ __do_clear_bss: cpc r27, r17 brne .Lclearloop + /* Perform any low-level initialization */ + + call up_lowinit + /* Now start NuttX */ - call os_start /* Start NuttX */ + call os_start jmp exit .endfunc diff --git a/nuttx/arch/avr/src/at90usb/at90usb_lowconsole.c b/nuttx/arch/avr/src/at90usb/at90usb_lowconsole.c new file mode 100644 index 000000000..f17d79417 --- /dev/null +++ b/nuttx/arch/avr/src/at90usb/at90usb_lowconsole.c @@ -0,0 +1,169 @@ +/****************************************************************************** + * arch/avr/src/at90usb/at90usb_lowconsole.c + * + * Copyright (C) 2010 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ******************************************************************************/ + +/****************************************************************************** + * Included Files + ******************************************************************************/ + +#include +#include "at90usb_config.h" + +#include +#include + +#include +#include + +#include "up_arch.h" +#include "up_internal.h" + +#include "at90usb_internal.h" + +/****************************************************************************** + * Private Definitions + ******************************************************************************/ + +/* Select USART parameters for the selected console -- there is only USART1 */ + +#if defined(CONFIG_USART1_SERIAL_CONSOLE) +# define AVR_CONSOLE_BASE AVR_USART1_BASE +# define AVR_CONSOLE_BAUD CONFIG_USART1_BAUD +# define AVR_CONSOLE_BITS CONFIG_USART1_BITS +# define AVR_CONSOLE_PARITY CONFIG_USART1_PARITY +# define AVR_CONSOLE_2STOP CONFIG_USART1_2STOP +#else +# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting" +#endif + +/****************************************************************************** + * Private Types + ******************************************************************************/ + +/****************************************************************************** + * Private Function Prototypes + ******************************************************************************/ + +/****************************************************************************** + * Global Variables + ******************************************************************************/ + +/****************************************************************************** + * Private Variables + ******************************************************************************/ + +/****************************************************************************** + * Private Functions + ******************************************************************************/ + +/****************************************************************************** + * Name: usart_setbaudrate + * + * Description: + * Configure the USART baud rate. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +static void usart_setbaudrate(uintptr_t usart_base, uint32_t baudrate) +{ +# warning "Missing logic" +} +#endif + +/****************************************************************************** + * Public Functions + ******************************************************************************/ + +/****************************************************************************** + * Name: usart_reset + * + * Description: + * Reset a USART. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +void usart_reset(uintptr_t usart_base) +{ +# warning "Missing Logic" +} +#endif + +/****************************************************************************** + * Name: usart_configure + * + * Description: + * Configure a USART as a RS-232 USART. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity, + unsigned int nbits, bool stop2) +{ +# warning "Missing Logic" +} +#endif + +/****************************************************************************** + * Name: up_consoleinit + * + * Description: + * Initialize a console for debug output. This function is called very + * early in the intialization sequence to configure the serial console uart + * (only). + * + ******************************************************************************/ + +void up_consoleinit(void) +{ +# warning "Missing Logic" +} + +/****************************************************************************** + * Name: up_lowputc + * + * Description: + * Output one byte on the serial console + * + ******************************************************************************/ + +void up_lowputc(char ch) +{ +#ifdef HAVE_SERIAL_CONSOLE +# warning "Missing Logic" +#endif +} + diff --git a/nuttx/arch/avr/src/at90usb/at90usb_lowinit.c b/nuttx/arch/avr/src/at90usb/at90usb_lowinit.c new file mode 100644 index 000000000..f7e7cfb69 --- /dev/null +++ b/nuttx/arch/avr/src/at90usb/at90usb_lowinit.c @@ -0,0 +1,103 @@ +/************************************************************************** + * arch/avr/src/at90usb/at90usb_lowinit.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************/ + +/************************************************************************** + * Included Files + **************************************************************************/ + +#include + +#include "at90usb_config.h" +#include "up_internal.h" +#include "at90usb_internal.h" + +/************************************************************************** + * Private Definitions + **************************************************************************/ + +/************************************************************************** + * Private Types + **************************************************************************/ + +/************************************************************************** + * Private Function Prototypes + **************************************************************************/ + +/************************************************************************** + * Global Variables + **************************************************************************/ + +/************************************************************************** + * Private Variables + **************************************************************************/ + +/************************************************************************** + * Private Functions + **************************************************************************/ + +/************************************************************************** + * Public Functions + **************************************************************************/ + +/************************************************************************** + * Name: up_lowinit + * + * Description: + * This performs basic initialization of the USART used for the serial + * console. Its purpose is to get the console output availabe as soon + * as possible. + * + **************************************************************************/ + +void up_lowinit(void) +{ + /* Initialize a console (probably a serial console) */ + + up_consoleinit(); + + /* Perform early serial initialization (so that we will have debug output + * available as soon as possible). + */ + +#ifdef CONFIG_USE_EARLYSERIALINIT + up_earlyserialinit(); +#endif + + /* Perform board-level initialization */ + + up_boardinitialize(); +} + + diff --git a/nuttx/arch/avr/src/at90usb/at90usb_serial.c b/nuttx/arch/avr/src/at90usb/at90usb_serial.c new file mode 100644 index 000000000..939c707a7 --- /dev/null +++ b/nuttx/arch/avr/src/at90usb/at90usb_serial.c @@ -0,0 +1,664 @@ +/**************************************************************************** + * arch/avr/src/at90usb/at90usb_serial.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include "at90usb_config.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +#include "up_arch.h" +#include "up_internal.h" +#include "os_internal.h" +#include "at90usb_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Some sanity checks *******************************************************/ + +/* Is there at least one USART enabled and configured as a RS-232 device? */ + +#ifndef HAVE_USART_DEVICE +# warning "No USARTs enabled as RS-232 devices" +#endif + +/* If we are not using the serial driver for the console, then we still must + * provide some minimal implementation of up_putc. + */ + +#ifdef CONFIG_USE_SERIALDRIVER + +/* Which USART with be tty0/console and which tty1? */ + +#if defined(CONFIG_USART1_SERIAL_CONSOLE) +# define CONSOLE_DEV g_usart1port /* USART1 is console */ +# define TTYS0_DEV g_usart1port /* USART1 is ttyS0 */ +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct up_dev_s +{ + uintptr_t usartbase; /* Base address of USART registers */ + uint32_t baud; /* Configured baud */ + uint32_t csr; /* Saved channel status register contents */ + uint8_t irq; /* IRQ associated with this USART */ + uint8_t parity; /* 0=none, 1=odd, 2=even */ + uint8_t bits; /* Number of bits (5, 6, 7 or 8) */ + bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */ +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static int up_setup(struct uart_dev_s *dev); +static void up_shutdown(struct uart_dev_s *dev); +static int up_attach(struct uart_dev_s *dev); +static void up_detach(struct uart_dev_s *dev); +static int up_interrupt(int irq, void *context); +static int up_ioctl(struct file *filep, int cmd, unsigned long arg); +static int up_receive(struct uart_dev_s *dev, uint32_t *status); +static void up_rxint(struct uart_dev_s *dev, bool enable); +static bool up_rxavailable(struct uart_dev_s *dev); +static void up_send(struct uart_dev_s *dev, int ch); +static void up_txint(struct uart_dev_s *dev, bool enable); +static bool up_txready(struct uart_dev_s *dev); + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +struct uart_ops_s g_uart_ops = +{ + .setup = up_setup, + .shutdown = up_shutdown, + .attach = up_attach, + .detach = up_detach, + .ioctl = up_ioctl, + .receive = up_receive, + .rxint = up_rxint, + .rxavailable = up_rxavailable, + .send = up_send, + .txint = up_txint, + .txready = up_txready, + .txempty = up_txready, +}; + +/* I/O buffers */ + +#ifdef CONFIG_AVR_USART1_RS232 +static char g_usart1rxbuffer[CONFIG_USART1_RXBUFSIZE]; +static char g_usart1txbuffer[CONFIG_USART1_TXBUFSIZE]; +#endif + +/* This describes the state of the AVR32 USART1 port. */ + +#ifdef CONFIG_AVR_USART1_RS232 +static struct up_dev_s g_usart1priv = +{ + .usartbase = AVR_USART1_BASE, + .baud = CONFIG_USART1_BAUD, + .irq = AVR_IRQ_USART1, + .parity = CONFIG_USART1_PARITY, + .bits = CONFIG_USART1_BITS, + .stopbits2 = CONFIG_USART1_2STOP, +}; + +static uart_dev_t g_usart1port = +{ + .recv = + { + .size = CONFIG_USART1_RXBUFSIZE, + .buffer = g_usart1rxbuffer, + }, + .xmit = + { + .size = CONFIG_USART1_TXBUFSIZE, + .buffer = g_usart1txbuffer, + }, + .ops = &g_uart_ops, + .priv = &g_usart1priv, +}; +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_serialin + ****************************************************************************/ + +static inline uint32_t up_serialin(struct up_dev_s *priv, int offset) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_serialout + ****************************************************************************/ + +static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_restoreusartint + ****************************************************************************/ + +static void up_restoreusartint(struct up_dev_s *priv, uint32_t imr) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_disableusartint + ****************************************************************************/ + +static inline void up_disableusartint(struct up_dev_s *priv, uint32_t *imr) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_setup + * + * Description: + * Configure the USART baud, bits, parity, etc. This method is called the + * first time that the serial port is opened. + * + ****************************************************************************/ + +static int up_setup(struct uart_dev_s *dev) +{ +#ifndef CONFIG_SUPPRESS_UART_CONFIG + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Configure the USART as an RS-232 UART */ + + usart_configure(priv->usartbase, priv->baud, priv->parity, + priv->bits, priv->stopbits2); +#endif + + return OK; +} + +/**************************************************************************** + * Name: up_shutdown + * + * Description: + * Disable the USART. This method is called when the serial + * port is closed + * + ****************************************************************************/ + +static void up_shutdown(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Reset, disable interrupts, and disable Rx and Tx */ + + usart_reset(priv->usartbase); +} + +/**************************************************************************** + * Name: up_attach + * + * Description: + * Configure the USART to operation in interrupt driven mode. This method is + * called when the serial port is opened. Normally, this is just after the + * the setup() method is called, however, the serial console may operate in + * a non-interrupt driven mode during the boot phase. + * + * RX and TX interrupts are not enabled when by the attach method (unless the + * hardware supports multiple levels of interrupt enabling). The RX and TX + * interrupts are not enabled until the txint() and rxint() methods are called. + * + ****************************************************************************/ + +static int up_attach(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Attach the IRQ */ + + return irq_attach(priv->irq, up_interrupt); +} + +/**************************************************************************** + * Name: up_detach + * + * Description: + * Detach USART interrupts. This method is called when the serial port is + * closed normally just before the shutdown method is called. The exception + * is the serial console which is never shutdown. + * + ****************************************************************************/ + +static void up_detach(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + irq_detach(priv->irq); +} + +/**************************************************************************** + * Name: up_interrupt + * + * Description: + * This is the USART interrupt handler. It will be invoked when an + * interrupt received on the 'irq' It should call uart_transmitchars or + * uart_receivechar to perform the appropriate data transfers. The + * interrupt handling logic must be able to map the 'irq' number into the + * approprite uart_dev_s structure in order to call these functions. + * + ****************************************************************************/ + +static int up_interrupt(int irq, void *context) +{ + struct uart_dev_s *dev = NULL; + struct up_dev_s *priv; + uint32_t csr; + int passes; + bool handled; + +#ifdef CONFIG_AVR_USART1_RS232 + if (g_usart1priv.irq == irq) + { + dev = &g_usart1port; + } + else +#endif + { + PANIC(OSERR_INTERNAL); + } + priv = (struct up_dev_s*)dev->priv; + DEBUGASSERT(priv); + + /* Loop until there are no characters to be transferred or, + * until we have been looping for a long time. + */ + + handled = true; + for (passes = 0; passes < 256 && handled; passes++) + { + handled = false; + +# warning "Missing logic" + /* Handle incoming, receive bytes (with or without timeout) */ + +# warning "Missing logic" + { + /* Received data ready... process incoming bytes */ + + uart_recvchars(dev); + handled = true; + } + + /* Handle outgoing, transmit bytes */ + +# warning "Missing logic" + { + /* Transmit data regiser empty ... process outgoing bytes */ + + uart_xmitchars(dev); + handled = true; + } + } + return OK; +} + +/**************************************************************************** + * Name: up_ioctl + * + * Description: + * All ioctl calls will be routed through this method + * + ****************************************************************************/ + +static int up_ioctl(struct file *filep, int cmd, unsigned long arg) +{ +#if 0 /* Reserved for future growth */ + struct inode *inode; + struct uart_dev_s *dev; + struct up_dev_s *priv; + int ret = OK; + + DEBUGASSERT(filep, filep->f_inode); + inode = filep->f_inode; + dev = inode->i_private; + + DEBUGASSERT(dev, dev->priv) + priv = (struct up_dev_s*)dev->priv; + + switch (cmd) + { + case xxx: /* Add commands here */ + break; + + default: + ret = -ENOTTY; + break; + } + + return ret; +#else + return -ENOTTY; +#endif +} + +/**************************************************************************** + * Name: up_receive + * + * Description: + * Called (usually) from the interrupt level to receive one + * character from the USART. Error bits associated with the + * receipt are provided in the return 'status'. + * + ****************************************************************************/ + +static int up_receive(struct uart_dev_s *dev, uint32_t *status) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect + * when reading the received character. + */ + +# warning "Missing logic" + + /* Return status information */ + + if (status) + { +# warning "Missing logic" + } + + /* Then return the actual received byte */ + +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_rxint + * + * Description: + * Call to enable or disable RX interrupts + * + ****************************************************************************/ + +static void up_rxint(struct uart_dev_s *dev, bool enable) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + if (enable) + { + /* Receive an interrupt when their is anything in the Rx data register (or an Rx + * timeout occurs). + */ + +#ifndef CONFIG_SUPPRESS_SERIAL_INTS +# warning "Missing logic" +#endif + } + else + { +# warning "Missing logic" + } +} + +/**************************************************************************** + * Name: up_rxavailable + * + * Description: + * Return true if the receive register is not empty + * + ****************************************************************************/ + +static bool up_rxavailable(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_send + * + * Description: + * This method will send one byte on the USART. + * + ****************************************************************************/ + +static void up_send(struct uart_dev_s *dev, int ch) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_txint + * + * Description: + * Call to enable or disable TX interrupts + * + ****************************************************************************/ + +static void up_txint(struct uart_dev_s *dev, bool enable) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + irqstate_t flags; + + flags = irqsave(); + if (enable) + { + /* Set to receive an interrupt when the TX data register is empty */ + +#ifndef CONFIG_SUPPRESS_SERIAL_INTS +# warning "Missing logic" + + /* Fake a TX interrupt here by just calling uart_xmitchars() with + * interrupts disabled (note this may recurse). + */ + + uart_xmitchars(dev); +#endif + } + else + { + /* Disable the TX interrupt */ + +# warning "Missing logic" + } + irqrestore(flags); +} + +/**************************************************************************** + * Name: up_txready + * + * Description: + * Return true if the tranmsit data register is empty + * + ****************************************************************************/ + +static bool up_txready(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_earlyserialinit + * + * Description: + * Performs the low level USART initialization early in debug so that the + * serial console will be available during bootup. This must be called + * before up_serialinit. NOTE: This function depends on GPIO pin + * configuration performed in up_consoleinit() and main clock iniialization + * performed in up_clkinitialize(). + * + ****************************************************************************/ + +void up_earlyserialinit(void) +{ + /* Disable all USARTS */ + + up_disableusartint(TTYS0_DEV.priv, NULL); +#ifdef TTYS1_DEV + up_disableusartint(TTYS1_DEV.priv, NULL); +#endif + + /* Configuration whichever one is the console */ + +#ifdef HAVE_SERIAL_CONSOLE + CONSOLE_DEV.isconsole = true; + up_setup(&CONSOLE_DEV); +#endif +} + +/**************************************************************************** + * Name: up_serialinit + * + * Description: + * Register serial console and serial ports. This assumes + * that up_earlyserialinit was called previously. + * + ****************************************************************************/ + +void up_serialinit(void) +{ + /* Register the console */ + +#ifdef HAVE_SERIAL_CONSOLE + (void)uart_register("/dev/console", &CONSOLE_DEV); +#endif + + /* Register all USARTs */ + + (void)uart_register("/dev/ttyS0", &TTYS0_DEV); +#ifdef TTYS1_DEV + (void)uart_register("/dev/ttyS1", &TTYS1_DEV); +#endif +} + +/**************************************************************************** + * Name: up_putc + * + * Description: + * Provide priority, low-level access to support OS debug writes + * + ****************************************************************************/ + +int up_putc(int ch) +{ +#ifdef HAVE_SERIAL_CONSOLE + struct up_dev_s *priv = (struct up_dev_s*)CONSOLE_DEV.priv; + uint32_t imr; + + up_disableusartint(priv, &imr); + + /* Check for LF */ + + if (ch == '\n') + { + /* Add CR */ + + up_lowputc('\r'); + } + + up_lowputc(ch); + up_restoreusartint(priv, imr); +#endif + return ch; +} + +#else /* CONFIG_USE_SERIALDRIVER */ + +/**************************************************************************** + * Name: up_putc + * + * Description: + * Provide priority, low-level access to support OS debug writes + * + ****************************************************************************/ + +int up_putc(int ch) +{ +#ifdef HAVE_SERIAL_CONSOLE + /* Check for LF */ + + if (ch == '\n') + { + /* Add CR */ + + up_lowputc('\r'); + } + + up_lowputc(ch); +#endif + return ch; +} + +#endif /* CONFIG_USE_SERIALDRIVER */ + diff --git a/nuttx/arch/avr/src/at90usb/at90usb_timerisr.c b/nuttx/arch/avr/src/at90usb/at90usb_timerisr.c new file mode 100644 index 000000000..079433b8d --- /dev/null +++ b/nuttx/arch/avr/src/at90usb/at90usb_timerisr.c @@ -0,0 +1,165 @@ +/**************************************************************************** + * arch/avr/src/at90usb/at90usb_timerisr.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include + +#include +#include +#include + +#include "up_arch.h" + +#include "at90usb_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* The CPU frequency is given by BOARD_CPU_CLOCK (defined in board.h). The + * desired interrupt frequency is given by CONFIG_MSEC_PER_TICK. An unscaled + * ideal match is given by: + * + * CLOCK = CPU_CLOCK / DIVISOR # CPU clocks/sec + * MATCH = CLOCK / CLOCKS_PER_SEC # CPU clocks/timer tick + * MATCH = CPU_CLOCK / DIVISOR / CLOCKS_PER_SEC # CPU clocks/timer tick + * + * But we only have 16-bits of accuracy so we need to pick the smallest + * divisor using the following brute force calculation: + */ + +#define MATCH1 (( BOARD_CPU_CLOCK + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH8 ((((BOARD_CPU_CLOCK + 4) / 8) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH64 ((((BOARD_CPU_CLOCK + 8) / 64) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH256 ((((BOARD_CPU_CLOCK + 128) / 256) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH1024 ((((BOARD_CPU_CLOCK + 512) / 1024) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) + +#if MATCH1 <= 65536 +# define MATCH (MATCH1-1) +# define PRESCALE 1 +#elif MATCH8 <= 65536 +# define MATCH (MATCH8-1) +# define PRESCALE 2 +#elif MATCH64 <= 65536 +# define MATCH (MATCH64-1) +# define PRESCALE 3 +#elif MATCH256 <= 65536 +# define MATCH (MATCH256-1) +# define PRESCALE 4 +#elif MATCH1024 <= 65536 +# define MATCH (MATCH1024-1) +# define PRESCALE 5 +#else +# error "Cannot represent this timer frequency" +#endif + +/* + * Eg. CPU_CLOCK = 8MHz, CLOCKS_PER_SEC = 100 + * + * MATCH1 ((8000000 + 50) / 100) = 80,000 FREQ=100.0Hz + * MATCH8 ((1000000 + 50) / 100) = 10,000 FREQ=100.0Hz <-- this one + * MATCH64 (( 125000 + 50) / 100) = 1,250 FREQ=100.0Hz + * MATCH256 (( 31250 + 50) / 100) = 313 FREQ=99.8Hz + * MATCH1024 (( 7804 + 50) / 100) = 78 FREQ=100.1Hz + */ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: up_timerisr + * + * Description: + * The timer ISR will perform a variety of services for various portions + * of the systems. + * + ****************************************************************************/ + +int up_timerisr(int irq, uint32_t *regs) +{ + /* Process timer interrupt */ + + sched_process_timer(); + return 0; +} + +/**************************************************************************** + * Function: up_timerinit + * + * Description: + * This function is called during start-up to initialize the timer + * interrupt. NOTE: This function depends on setup of OSC32 by + * up_clkinitialize(). + * + ****************************************************************************/ + +void up_timerinit(void) +{ + /* Setup timer 1 compare match A to generate a tick interrupt. + * + * First, setup the match value for compare match A. + */ + + OCR1AH = (uint8_t)((uint16_t)MATCH >> 8); + OCR1AL = (uint8_t)((uint16_t)MATCH & 0xff); + + /* Setup clock source and compare match behaviour. */ + + TCCR1A = 0x08 | PRESCALE; + + /* Attach the timer interrupt vector */ + + (void)irq_attach(AT90USB_IRQ_T2COMPA, (xcpt_t)up_timerisr); + + /* Enable the interrupt on compare match A */ + + TIMSK1 |= 0x10; +} diff --git a/nuttx/arch/avr/src/atmega/Make.defs b/nuttx/arch/avr/src/atmega/Make.defs index 9bcf64ea0..a761b4938 100644 --- a/nuttx/arch/avr/src/atmega/Make.defs +++ b/nuttx/arch/avr/src/atmega/Make.defs @@ -42,10 +42,11 @@ HEAD_ASRC = atmega_head.S CMN_ASRCS = up_switchcontext.S CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \ up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \ - up_interruptcontext.c up_lowputs.c up_mdelay.c up_modifyreg8.c \ - up_modifyreg16.c up_modifyreg32.c up_puts.c up_releasepending.c \ - up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \ - up_sigdeliver.c up_udelay.c up_unblocktask.c up_usestack.c + up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \ + up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \ + up_puts.c up_releasepending.c up_releasestack.c \ + up_reprioritizertr.c up_schedulesigaction.c up_sigdeliver.c \ + up_udelay.c up_unblocktask.c up_usestack.c # Configuration-dependent common files @@ -56,7 +57,7 @@ endif # Required ATMEGA files CHIP_ASRCS = atmega_exceptions.S -CHIP_CSRCS = +CHIP_CSRCS = atmega_lowconsole.c atmega_lowinit.c atmega_serial.c atmega_timerisr.c # Configuration-dependent ATMEGA files diff --git a/nuttx/arch/avr/src/atmega/atmega_config.h b/nuttx/arch/avr/src/atmega/atmega_config.h index 09b1c11d9..2cb483160 100644 --- a/nuttx/arch/avr/src/atmega/atmega_config.h +++ b/nuttx/arch/avr/src/atmega/atmega_config.h @@ -45,6 +45,28 @@ /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ +/* USARTs ***************************************************************************/ + +#undef HAVE_USART_DEVICE +#if defined(CONFIG_AVR_USART0) || defined(CONFIG_AVR_USART0) +# define HAVE_USART_DEVICE 1 +#endif + +/* Is there a serial console? There should be at most one defined. It + * could be on any USARTn, n=0,1 + */ + +#if defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART0) +# undef CONFIG_USART1_SERIAL_CONSOLE +# define HAVE_SERIAL_CONSOLE 1 +#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART1) +# undef CONFIG_USART0_SERIAL_CONSOLE +# define HAVE_SERIAL_CONSOLE 1 +#else +# undef CONFIG_USART0_SERIAL_CONSOLE +# undef CONFIG_USART1_SERIAL_CONSOLE +# undef HAVE_SERIAL_CONSOLE +#endif /************************************************************************************ * Public Types diff --git a/nuttx/arch/avr/src/atmega/atmega_head.S b/nuttx/arch/avr/src/atmega/atmega_head.S index 2ebd8ecec..281b1e159 100755 --- a/nuttx/arch/avr/src/atmega/atmega_head.S +++ b/nuttx/arch/avr/src/atmega/atmega_head.S @@ -66,6 +66,7 @@ ****************************************************************************/ .file "up_nommuhead.S" + .global __start /* Entry point */ .global _sbss /* Start of .bss. Defined by ld.script */ .global _ebss /* End of .bss. Defined by ld.script */ .global _sdata /* Start of .data section in RAM */ @@ -242,9 +243,13 @@ __do_clear_bss: cpc r27, r17 brne .Lclearloop + /* Perform any low-level initialization */ + + call up_lowinit + /* Now start NuttX */ - call os_start /* Start NuttX */ + call os_start jmp exit .endfunc diff --git a/nuttx/arch/avr/src/atmega/atmega_lowconsole.c b/nuttx/arch/avr/src/atmega/atmega_lowconsole.c new file mode 100644 index 000000000..a7ed60c9b --- /dev/null +++ b/nuttx/arch/avr/src/atmega/atmega_lowconsole.c @@ -0,0 +1,174 @@ +/****************************************************************************** + * arch/avr/src/atmega/atmega_lowconsole.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ******************************************************************************/ + +/****************************************************************************** + * Included Files + ******************************************************************************/ + +#include +#include "atmega_config.h" + +#include +#include + +#include +#include + +#include "up_arch.h" +#include "up_internal.h" +#include "atmega_internal.h" + +/****************************************************************************** + * Private Definitions + ******************************************************************************/ + +/* Select USART parameters for the selected console */ + +#if defined(CONFIG_USART0_SERIAL_CONSOLE) +# define AVR__CONSOLE_BASE AVR__USART0_BASE +# define AVR__CONSOLE_BAUD CONFIG_USART0_BAUD +# define AVR__CONSOLE_BITS CONFIG_USART0_BITS +# define AVR__CONSOLE_PARITY CONFIG_USART0_PARITY +# define AVR__CONSOLE_2STOP CONFIG_USART0_2STOP +#elif defined(CONFIG_USART1_SERIAL_CONSOLE) +# define AVR__CONSOLE_BASE AVR__USART1_BASE +# define AVR__CONSOLE_BAUD CONFIG_USART1_BAUD +# define AVR__CONSOLE_BITS CONFIG_USART1_BITS +# define AVR__CONSOLE_PARITY CONFIG_USART1_PARITY +# define AVR__CONSOLE_2STOP CONFIG_USART1_2STOP +#else +# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting" +#endif + +/****************************************************************************** + * Private Types + ******************************************************************************/ + +/****************************************************************************** + * Private Function Prototypes + ******************************************************************************/ + +/****************************************************************************** + * Global Variables + ******************************************************************************/ + +/****************************************************************************** + * Private Variables + ******************************************************************************/ + +/****************************************************************************** + * Private Functions + ******************************************************************************/ + +/****************************************************************************** + * Name: usart_setbaudrate + * + * Description: + * Configure the USART baud rate. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +static void usart_setbaudrate(uintptr_t usart_base, uint32_t baudrate) +{ +# warning "Missing logic" +} +#endif + +/****************************************************************************** + * Public Functions + ******************************************************************************/ + +/****************************************************************************** + * Name: usart_reset + * + * Description: + * Reset a USART. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +void usart_reset(uintptr_t usart_base) +{ +# warning "Missing logic" +} +#endif + +/****************************************************************************** + * Name: usart_configure + * + * Description: + * Configure a USART as a RS-232 USART. + * + ******************************************************************************/ + +#ifdef HAVE_USART_DEVICE +void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity, + unsigned int nbits, bool stop2) +{ +# warning "Missing logic" +} +#endif + +/****************************************************************************** + * Name: up_consoleinit + * + * Description: + * Initialize a console for debug output. This function is called very + * early in the intialization sequence to configure the serial console uart + * (only). + * + ******************************************************************************/ + +void up_consoleinit(void) +{ +# warning "Missing logic" +} + +/****************************************************************************** + * Name: up_lowputc + * + * Description: + * Output one byte on the serial console + * + ******************************************************************************/ + +void up_lowputc(char ch) +{ +#ifdef HAVE_SERIAL_CONSOLE +# warning "Missing logic" +#endif +} + diff --git a/nuttx/arch/avr/src/atmega/atmega_lowinit.c b/nuttx/arch/avr/src/atmega/atmega_lowinit.c new file mode 100644 index 000000000..9361e26b0 --- /dev/null +++ b/nuttx/arch/avr/src/atmega/atmega_lowinit.c @@ -0,0 +1,103 @@ +/************************************************************************** + * arch/avr/src/atmega/atmega_lowinit.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************/ + +/************************************************************************** + * Included Files + **************************************************************************/ + +#include + +#include "atmega_config.h" +#include "up_internal.h" +#include "atmega_internal.h" + +/************************************************************************** + * Private Definitions + **************************************************************************/ + +/************************************************************************** + * Private Types + **************************************************************************/ + +/************************************************************************** + * Private Function Prototypes + **************************************************************************/ + +/************************************************************************** + * Global Variables + **************************************************************************/ + +/************************************************************************** + * Private Variables + **************************************************************************/ + +/************************************************************************** + * Private Functions + **************************************************************************/ + +/************************************************************************** + * Public Functions + **************************************************************************/ + +/************************************************************************** + * Name: up_lowinit + * + * Description: + * This performs basic initialization of the USART used for the serial + * console. Its purpose is to get the console output availabe as soon + * as possible. + * + **************************************************************************/ + +void up_lowinit(void) +{ + /* Initialize a console (probably a serial console) */ + + up_consoleinit(); + + /* Perform early serial initialization (so that we will have debug output + * available as soon as possible). + */ + +#ifdef CONFIG_USE_EARLYSERIALINIT + up_earlyserialinit(); +#endif + + /* Perform board-level initialization */ + + up_boardinitialize(); +} + + diff --git a/nuttx/arch/avr/src/atmega/atmega_serial.c b/nuttx/arch/avr/src/atmega/atmega_serial.c new file mode 100644 index 000000000..7b5e02bd9 --- /dev/null +++ b/nuttx/arch/avr/src/atmega/atmega_serial.c @@ -0,0 +1,718 @@ +/**************************************************************************** + * arch/avr/src/atmega/atmega_serial.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include "atmega_config.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include + +#include "up_arch.h" +#include "up_internal.h" +#include "os_internal.h" +#include "atmega_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Some sanity checks *******************************************************/ + +/* Is there at least one USART enabled and configured as a RS-232 device? */ + +#ifndef HAVE_USART_DEVICE +# warning "No USARTs enabled as RS-232 devices" +#endif + +/* If we are not using the serial driver for the console, then we still must + * provide some minimal implementation of up_putc. + */ + +#ifdef CONFIG_USE_SERIALDRIVER + +/* Which USART with be tty0/console and which tty1? */ + +#if defined(CONFIG_USART0_SERIAL_CONSOLE) +# define CONSOLE_DEV g_usart0port /* USART0 is console */ +# define TTYS0_DEV g_usart0port /* USART0 is ttyS0 */ +# ifdef CONFIG_AVR_USART1_RS232 +# define TTYS1_DEV g_usart1port /* USART1 is ttyS1 */ +# else +# undef TTYS1_DEV /* No ttyS1 */ +# endif +#elif defined(CONFIG_USART1_SERIAL_CONSOLE) +# define CONSOLE_DEV g_usart1port /* USART1 is console */ +# define TTYS0_DEV g_usart1port /* USART1 is ttyS0 */ +# ifdef CONFIG_AVR_USART0_RS232 +# define TTYS1_DEV g_usart0port /* USART0 is ttyS1 */ +# else +# undef TTYS1_DEV /* No ttyS1 */ +# endif +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct up_dev_s +{ + uintptr_t usartbase; /* Base address of USART registers */ + uint32_t baud; /* Configured baud */ + uint32_t csr; /* Saved channel status register contents */ + uint8_t irq; /* IRQ associated with this USART */ + uint8_t parity; /* 0=none, 1=odd, 2=even */ + uint8_t bits; /* Number of bits (5, 6, 7 or 8) */ + bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */ +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static int up_setup(struct uart_dev_s *dev); +static void up_shutdown(struct uart_dev_s *dev); +static int up_attach(struct uart_dev_s *dev); +static void up_detach(struct uart_dev_s *dev); +static int up_interrupt(int irq, void *context); +static int up_ioctl(struct file *filep, int cmd, unsigned long arg); +static int up_receive(struct uart_dev_s *dev, uint32_t *status); +static void up_rxint(struct uart_dev_s *dev, bool enable); +static bool up_rxavailable(struct uart_dev_s *dev); +static void up_send(struct uart_dev_s *dev, int ch); +static void up_txint(struct uart_dev_s *dev, bool enable); +static bool up_txready(struct uart_dev_s *dev); + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +struct uart_ops_s g_uart_ops = +{ + .setup = up_setup, + .shutdown = up_shutdown, + .attach = up_attach, + .detach = up_detach, + .ioctl = up_ioctl, + .receive = up_receive, + .rxint = up_rxint, + .rxavailable = up_rxavailable, + .send = up_send, + .txint = up_txint, + .txready = up_txready, + .txempty = up_txready, +}; + +/* I/O buffers */ + +#ifdef CONFIG_AVR_USART0_RS232 +static char g_usart0rxbuffer[CONFIG_USART0_RXBUFSIZE]; +static char g_usart0txbuffer[CONFIG_USART0_TXBUFSIZE]; +#endif +#ifdef CONFIG_AVR_USART1_RS232 +static char g_usart1rxbuffer[CONFIG_USART1_RXBUFSIZE]; +static char g_usart1txbuffer[CONFIG_USART1_TXBUFSIZE]; +#endif + +/* This describes the state of the AVR32 USART0 ports. */ + +#ifdef CONFIG_AVR_USART0_RS232 +static struct up_dev_s g_usart0priv = +{ + .usartbase = AVR_USART0_BASE, + .baud = CONFIG_USART0_BAUD, + .irq = AVR_IRQ_USART0, + .parity = CONFIG_USART0_PARITY, + .bits = CONFIG_USART0_BITS, + .stopbits2 = CONFIG_USART0_2STOP, +}; + +static uart_dev_t g_usart0port = +{ + .recv = + { + .size = CONFIG_USART0_RXBUFSIZE, + .buffer = g_usart0rxbuffer, + }, + .xmit = + { + .size = CONFIG_USART0_TXBUFSIZE, + .buffer = g_usart0txbuffer, + }, + .ops = &g_uart_ops, + .priv = &g_usart0priv, +}; +#endif + +/* This describes the state of the AVR32 USART1 port. */ + +#ifdef CONFIG_AVR_USART1_RS232 +static struct up_dev_s g_usart1priv = +{ + .usartbase = AVR_USART1_BASE, + .baud = CONFIG_USART1_BAUD, + .irq = AVR_IRQ_USART1, + .parity = CONFIG_USART1_PARITY, + .bits = CONFIG_USART1_BITS, + .stopbits2 = CONFIG_USART1_2STOP, +}; + +static uart_dev_t g_usart1port = +{ + .recv = + { + .size = CONFIG_USART1_RXBUFSIZE, + .buffer = g_usart1rxbuffer, + }, + .xmit = + { + .size = CONFIG_USART1_TXBUFSIZE, + .buffer = g_usart1txbuffer, + }, + .ops = &g_uart_ops, + .priv = &g_usart1priv, +}; +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_serialin + ****************************************************************************/ + +static inline uint32_t up_serialin(struct up_dev_s *priv, int offset) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_serialout + ****************************************************************************/ + +static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_restoreusartint + ****************************************************************************/ + +static void up_restoreusartint(struct up_dev_s *priv, uint32_t imr) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_disableusartint + ****************************************************************************/ + +static inline void up_disableusartint(struct up_dev_s *priv, uint32_t *imr) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: up_setup + * + * Description: + * Configure the USART baud, bits, parity, etc. This method is called the + * first time that the serial port is opened. + * + ****************************************************************************/ + +static int up_setup(struct uart_dev_s *dev) +{ +#ifndef CONFIG_SUPPRESS_UART_CONFIG + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Configure the USART as an RS-232 UART */ + + usart_configure(priv->usartbase, priv->baud, priv->parity, + priv->bits, priv->stopbits2); +#endif + + return OK; +} + +/**************************************************************************** + * Name: up_shutdown + * + * Description: + * Disable the USART. This method is called when the serial + * port is closed + * + ****************************************************************************/ + +static void up_shutdown(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Reset, disable interrupts, and disable Rx and Tx */ + + usart_reset(priv->usartbase); +} + +/**************************************************************************** + * Name: up_attach + * + * Description: + * Configure the USART to operation in interrupt driven mode. This method is + * called when the serial port is opened. Normally, this is just after the + * the setup() method is called, however, the serial console may operate in + * a non-interrupt driven mode during the boot phase. + * + * RX and TX interrupts are not enabled when by the attach method (unless the + * hardware supports multiple levels of interrupt enabling). The RX and TX + * interrupts are not enabled until the txint() and rxint() methods are called. + * + ****************************************************************************/ + +static int up_attach(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Attach the IRQ */ + + return irq_attach(priv->irq, up_interrupt); +} + +/**************************************************************************** + * Name: up_detach + * + * Description: + * Detach USART interrupts. This method is called when the serial port is + * closed normally just before the shutdown method is called. The exception + * is the serial console which is never shutdown. + * + ****************************************************************************/ + +static void up_detach(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + irq_detach(priv->irq); +} + +/**************************************************************************** + * Name: up_interrupt + * + * Description: + * This is the USART interrupt handler. It will be invoked when an + * interrupt received on the 'irq' It should call uart_transmitchars or + * uart_receivechar to perform the appropriate data transfers. The + * interrupt handling logic must be able to map the 'irq' number into the + * approprite uart_dev_s structure in order to call these functions. + * + ****************************************************************************/ + +static int up_interrupt(int irq, void *context) +{ + struct uart_dev_s *dev = NULL; + struct up_dev_s *priv; + uint32_t csr; + int passes; + bool handled; + +#ifdef CONFIG_AVR_USART0_RS232 + if (g_usart0priv.irq == irq) + { + dev = &g_usart0port; + } + else +#endif +#ifdef CONFIG_AVR_USART1_RS232 + if (g_usart1priv.irq == irq) + { + dev = &g_usart1port; + } + else +#endif + { + PANIC(OSERR_INTERNAL); + } + priv = (struct up_dev_s*)dev->priv; + DEBUGASSERT(priv); + + /* Loop until there are no characters to be transferred or, + * until we have been looping for a long time. + */ + + handled = true; + for (passes = 0; passes < 256 && handled; passes++) + { + handled = false; + +# warning "Missing logic" + /* Handle incoming, receive bytes (with or without timeout) */ + +# warning "Missing logic" + { + /* Received data ready... process incoming bytes */ + + uart_recvchars(dev); + handled = true; + } + + /* Handle outgoing, transmit bytes */ + +# warning "Missing logic" + { + /* Transmit data regiser empty ... process outgoing bytes */ + + uart_xmitchars(dev); + handled = true; + } + } + return OK; +} + +/**************************************************************************** + * Name: up_ioctl + * + * Description: + * All ioctl calls will be routed through this method + * + ****************************************************************************/ + +static int up_ioctl(struct file *filep, int cmd, unsigned long arg) +{ +#if 0 /* Reserved for future growth */ + struct inode *inode; + struct uart_dev_s *dev; + struct up_dev_s *priv; + int ret = OK; + + DEBUGASSERT(filep, filep->f_inode); + inode = filep->f_inode; + dev = inode->i_private; + + DEBUGASSERT(dev, dev->priv) + priv = (struct up_dev_s*)dev->priv; + + switch (cmd) + { + case xxx: /* Add commands here */ + break; + + default: + ret = -ENOTTY; + break; + } + + return ret; +#else + return -ENOTTY; +#endif +} + +/**************************************************************************** + * Name: up_receive + * + * Description: + * Called (usually) from the interrupt level to receive one + * character from the USART. Error bits associated with the + * receipt are provided in the return 'status'. + * + ****************************************************************************/ + +static int up_receive(struct uart_dev_s *dev, uint32_t *status) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + /* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect + * when reading the received character. + */ + +# warning "Missing logic" + + /* Return status information */ + + if (status) + { +# warning "Missing logic" + } + + /* Then return the actual received byte */ + +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_rxint + * + * Description: + * Call to enable or disable RX interrupts + * + ****************************************************************************/ + +static void up_rxint(struct uart_dev_s *dev, bool enable) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + + if (enable) + { + /* Receive an interrupt when their is anything in the Rx data register (or an Rx + * timeout occurs). + */ + +#ifndef CONFIG_SUPPRESS_SERIAL_INTS +# warning "Missing logic" +#endif + } + else + { +# warning "Missing logic" + } +} + +/**************************************************************************** + * Name: up_rxavailable + * + * Description: + * Return true if the receive register is not empty + * + ****************************************************************************/ + +static bool up_rxavailable(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_send + * + * Description: + * This method will send one byte on the USART. + * + ****************************************************************************/ + +static void up_send(struct uart_dev_s *dev, int ch) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Name: up_txint + * + * Description: + * Call to enable or disable TX interrupts + * + ****************************************************************************/ + +static void up_txint(struct uart_dev_s *dev, bool enable) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; + irqstate_t flags; + + flags = irqsave(); + if (enable) + { + /* Set to receive an interrupt when the TX data register is empty */ + +#ifndef CONFIG_SUPPRESS_SERIAL_INTS +# warning "Missing logic" + + /* Fake a TX interrupt here by just calling uart_xmitchars() with + * interrupts disabled (note this may recurse). + */ + + uart_xmitchars(dev); +#endif + } + else + { + /* Disable the TX interrupt */ + +# warning "Missing logic" + } + irqrestore(flags); +} + +/**************************************************************************** + * Name: up_txready + * + * Description: + * Return true if the tranmsit data register is empty + * + ****************************************************************************/ + +static bool up_txready(struct uart_dev_s *dev) +{ + struct up_dev_s *priv = (struct up_dev_s*)dev->priv; +# warning "Missing logic" + return 0; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_earlyserialinit + * + * Description: + * Performs the low level USART initialization early in debug so that the + * serial console will be available during bootup. This must be called + * before up_serialinit. NOTE: This function depends on GPIO pin + * configuration performed in up_consoleinit() and main clock iniialization + * performed in up_clkinitialize(). + * + ****************************************************************************/ + +void up_earlyserialinit(void) +{ + /* Disable all USARTS */ + + up_disableusartint(TTYS0_DEV.priv, NULL); +#ifdef TTYS1_DEV + up_disableusartint(TTYS1_DEV.priv, NULL); +#endif + + /* Configuration whichever one is the console */ + +#ifdef HAVE_SERIAL_CONSOLE + CONSOLE_DEV.isconsole = true; + up_setup(&CONSOLE_DEV); +#endif +} + +/**************************************************************************** + * Name: up_serialinit + * + * Description: + * Register serial console and serial ports. This assumes + * that up_earlyserialinit was called previously. + * + ****************************************************************************/ + +void up_serialinit(void) +{ + /* Register the console */ + +#ifdef HAVE_SERIAL_CONSOLE + (void)uart_register("/dev/console", &CONSOLE_DEV); +#endif + + /* Register all USARTs */ + + (void)uart_register("/dev/ttyS0", &TTYS0_DEV); +#ifdef TTYS1_DEV + (void)uart_register("/dev/ttyS1", &TTYS1_DEV); +#endif +} + +/**************************************************************************** + * Name: up_putc + * + * Description: + * Provide priority, low-level access to support OS debug writes + * + ****************************************************************************/ + +int up_putc(int ch) +{ +#ifdef HAVE_SERIAL_CONSOLE + struct up_dev_s *priv = (struct up_dev_s*)CONSOLE_DEV.priv; + uint32_t imr; + + up_disableusartint(priv, &imr); + + /* Check for LF */ + + if (ch == '\n') + { + /* Add CR */ + + up_lowputc('\r'); + } + + up_lowputc(ch); + up_restoreusartint(priv, imr); +#endif + return ch; +} + +#else /* CONFIG_USE_SERIALDRIVER */ + +/**************************************************************************** + * Name: up_putc + * + * Description: + * Provide priority, low-level access to support OS debug writes + * + ****************************************************************************/ + +int up_putc(int ch) +{ +#ifdef HAVE_SERIAL_CONSOLE + /* Check for LF */ + + if (ch == '\n') + { + /* Add CR */ + + up_lowputc('\r'); + } + + up_lowputc(ch); +#endif + return ch; +} + +#endif /* CONFIG_USE_SERIALDRIVER */ + diff --git a/nuttx/arch/avr/src/atmega/atmega_timerisr.c b/nuttx/arch/avr/src/atmega/atmega_timerisr.c new file mode 100644 index 000000000..6cd11e393 --- /dev/null +++ b/nuttx/arch/avr/src/atmega/atmega_timerisr.c @@ -0,0 +1,165 @@ +/**************************************************************************** + * arch/avr/src/atmega/atmega_timerisr.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include + +#include +#include +#include + +#include "up_arch.h" + +#include "atmega_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* The CPU frequency is given by BOARD_CPU_CLOCK (defined in board.h). The + * desired interrupt frequency is given by CONFIG_MSEC_PER_TICK. An unscaled + * ideal match is given by: + * + * CLOCK = CPU_CLOCK / DIVISOR # CPU clocks/sec + * MATCH = CLOCK / CLOCKS_PER_SEC # CPU clocks/timer tick + * MATCH = CPU_CLOCK / DIVISOR / CLOCKS_PER_SEC # CPU clocks/timer tick + * + * But we only have 16-bits of accuracy so we need to pick the smallest + * divisor using the following brute force calculation: + */ + +#define MATCH1 (( BOARD_CPU_CLOCK + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH8 ((((BOARD_CPU_CLOCK + 4) / 8) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH64 ((((BOARD_CPU_CLOCK + 8) / 64) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH256 ((((BOARD_CPU_CLOCK + 128) / 256) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) +#define MATCH1024 ((((BOARD_CPU_CLOCK + 512) / 1024) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC) + +#if MATCH1 <= 65536 +# define MATCH (MATCH1-1) +# define PRESCALE 1 +#elif MATCH8 <= 65536 +# define MATCH (MATCH8-1) +# define PRESCALE 2 +#elif MATCH64 <= 65536 +# define MATCH (MATCH64-1) +# define PRESCALE 3 +#elif MATCH256 <= 65536 +# define MATCH (MATCH256-1) +# define PRESCALE 4 +#elif MATCH1024 <= 65536 +# define MATCH (MATCH1024-1) +# define PRESCALE 5 +#else +# error "Cannot represent this timer frequency" +#endif + +/* + * Eg. CPU_CLOCK = 8MHz, CLOCKS_PER_SEC = 100 + * + * MATCH1 ((8000000 + 50) / 100) = 80,000 FREQ=100.0Hz + * MATCH8 ((1000000 + 50) / 100) = 10,000 FREQ=100.0Hz <-- this one + * MATCH64 (( 125000 + 50) / 100) = 1,250 FREQ=100.0Hz + * MATCH256 (( 31250 + 50) / 100) = 313 FREQ=99.8Hz + * MATCH1024 (( 7804 + 50) / 100) = 78 FREQ=100.1Hz + */ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Global Functions + ****************************************************************************/ + +/**************************************************************************** + * Function: up_timerisr + * + * Description: + * The timer ISR will perform a variety of services for various portions + * of the systems. + * + ****************************************************************************/ + +int up_timerisr(int irq, uint32_t *regs) +{ + /* Process timer interrupt */ + + sched_process_timer(); + return 0; +} + +/**************************************************************************** + * Function: up_timerinit + * + * Description: + * This function is called during start-up to initialize the timer + * interrupt. NOTE: This function depends on setup of OSC32 by + * up_clkinitialize(). + * + ****************************************************************************/ + +void up_timerinit(void) +{ + /* Setup timer 1 compare match A to generate a tick interrupt. + * + * First, setup the match value for compare match A. + */ + + OCR1AH = (uint8_t)((uint16_t)MATCH >> 8); + OCR1AL = (uint8_t)((uint16_t)MATCH & 0xff); + + /* Setup clock source and compare match behaviour. */ + + TCCR1A = 0x08 | PRESCALE; + + /* Attach the timer interrupt vector */ + + (void)irq_attach(AT90USB_IRQ_T2COMPA, (xcpt_t)up_timerisr); + + /* Enable the interrupt on compare match A */ + + TIMSK1 |= 0x10; +} diff --git a/nuttx/arch/avr/src/avr/up_initialstate.c b/nuttx/arch/avr/src/avr/up_initialstate.c new file mode 100644 index 000000000..af7e88101 --- /dev/null +++ b/nuttx/arch/avr/src/avr/up_initialstate.c @@ -0,0 +1,110 @@ +/**************************************************************************** + * arch/avr/src/avr/up_initialstate.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include + +#include +#include +#include + +#include "up_internal.h" +#include "up_arch.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_initial_state + * + * Description: + * A new thread is being started and a new TCB has been created. This + * function is called to initialize the processor specific portions of the + * new TCB. + * + * This function must setup the intial architecture registers and/or stack + * so that execution will begin at tcb->start on the next context switch. + * + ****************************************************************************/ + +void up_initial_state(_TCB *tcb) +{ + struct xcptcontext *xcp = &tcb->xcp; + + /* Initialize the initial exception register context structure. Zeroing + * all registers is a good debug helper, but should not be necessary. + */ + + memset(xcp, 0, sizeof(struct xcptcontext)); + + /* Set the initial stack pointer to the "base" of the allocated stack */ + + xcp->regs[REG_SPH] = (uint8_t)((uint16_t)tcb->adj_stack_ptr >> 8); + xcp->regs[REG_SPL] = (uint8_t)((uint16_t)tcb->adj_stack_ptr & 0xff); + + /* Save the task entry point */ + + xcp->regs[REG_PCH] = (uint8_t)((uint16_t)tcb->start >> 8); + xcp->regs[REG_PCL] = (uint8_t)((uint16_t)tcb->start & 0xff); + + /* Enable or disable interrupts, based on user configuration */ + +#ifdef CONFIG_SUPPRESS_INTERRUPTS + xcp->regs[REG_SREG] = getsreg() & ~(1 << SREG_I); +#else + xcp->regs[REG_SREG] = getsreg() | (1 << SREG_I); +#endif +} + diff --git a/nuttx/arch/avr/src/avr/up_irq.c b/nuttx/arch/avr/src/avr/up_irq.c new file mode 100644 index 000000000..11beee8e5 --- /dev/null +++ b/nuttx/arch/avr/src/avr/up_irq.c @@ -0,0 +1,108 @@ +/**************************************************************************** + * arch/avr/src/avr/up_irq.c + * + * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include "at90usb_config.h" + +#include +#include +#include + +#include +#include +#include +#include + +#include "up_arch.h" +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +volatile uint8_t *current_regs; + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_irqinitialize + ****************************************************************************/ + +void up_irqinitialize(void) +{ + /* currents_regs is non-NULL only while processing an interrupt */ + + current_regs = NULL; + + /* Initialize GPIO interrupt facilities */ + +#ifdef CONFIG_AVR32_GPIOIRQ +#ifdef CONFIG_HAVE_WEAKFUNCTIONS + if (gpio_irqinitialize != NULL) +#endif + { + gpio_irqinitialize(); + } +#endif + + /* And finally, enable interrupts */ + +#ifndef CONFIG_SUPPRESS_INTERRUPTS + irqrestore(getsreg() | (1 << SREG_I)); +#endif +} diff --git a/nuttx/arch/avr/src/avr/up_schedulesigaction.c b/nuttx/arch/avr/src/avr/up_schedulesigaction.c index af9e917c6..ba56234d1 100644 --- a/nuttx/arch/avr/src/avr/up_schedulesigaction.c +++ b/nuttx/arch/avr/src/avr/up_schedulesigaction.c @@ -164,7 +164,7 @@ void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver) current_regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff; current_regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8; - current_regs[REG_SREG] |= (1 << SREG_I); + current_regs[REG_SREG] &= ~(1 << SREG_I); /* And make sure that the saved context in the TCB * is the same as the interrupt return context. @@ -198,7 +198,7 @@ void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver) tcb->xcp.regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff; tcb->xcp.regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8; - tcb->xcp.regs[REG_SREG] |= (1 << SREG_I); + tcb->xcp.regs[REG_SREG] &= ~(1 << SREG_I); } irqrestore(flags); diff --git a/nuttx/arch/avr/src/avr32/up_initialstate.c b/nuttx/arch/avr/src/avr32/up_initialstate.c index 48dc6c8eb..38fe40d67 100644 --- a/nuttx/arch/avr/src/avr32/up_initialstate.c +++ b/nuttx/arch/avr/src/avr32/up_initialstate.c @@ -121,10 +121,10 @@ void up_initial_state(_TCB *tcb) /* Enable or disable interrupts, based on user configuration */ -# ifdef CONFIG_SUPPRESS_INTERRUPTS +#ifdef CONFIG_SUPPRESS_INTERRUPTS xcp->regs[REG_SR] = avr32_sr() | AVR32_SR_GM_MASK; -# else +#else xcp->regs[REG_SR] = avr32_sr() & ~AVR32_SR_GM_MASK; -# endif +#endif } diff --git a/nuttx/arch/avr/src/common/up_assert.c b/nuttx/arch/avr/src/common/up_assert.c new file mode 100644 index 000000000..b2cd8ae86 --- /dev/null +++ b/nuttx/arch/avr/src/common/up_assert.c @@ -0,0 +1,154 @@ +/**************************************************************************** + * arch/avr/src/common/up_assert.c + * + * Copyright (C) 2010-2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "up_arch.h" +#include "os_internal.h" +#include "up_internal.h" + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* The following is just intended to keep some ugliness out of the mainline + * code. We are going to print the task name if: + * + * CONFIG_TASK_NAME_SIZE > 0 && <-- The task has a name + * (defined(CONFIG_DEBUG) || <-- And the debug is enabled (lldbg used) + * defined(CONFIG_ARCH_STACKDUMP)) <-- Or lib_lowprintf() is used + */ + +#undef CONFIG_PRINT_TASKNAME +#if CONFIG_TASK_NAME_SIZE > 0 && (defined(CONFIG_DEBUG) || defined(CONFIG_ARCH_STACKDUMP)) +# define CONFIG_PRINT_TASKNAME 1 +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: _up_assert + ****************************************************************************/ + +static void _up_assert(int errorcode) /* __attribute__ ((noreturn)) */ +{ + /* Are we in an interrupt handler or the idle task? */ + + if (current_regs || ((_TCB*)g_readytorun.head)->pid == 0) + { + (void)irqsave(); + for(;;) + { +#ifdef CONFIG_ARCH_LEDS + up_ledon(LED_PANIC); + up_mdelay(250); + up_ledoff(LED_PANIC); + up_mdelay(250); +#endif + } + } + else + { + exit(errorcode); + } +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_assert + ****************************************************************************/ + +void up_assert(const uint8_t *filename, int lineno) +{ +#ifdef CONFIG_PRINT_TASKNAME + _TCB *rtcb = (_TCB*)g_readytorun.head; +#endif + + up_ledon(LED_ASSERTION); +#ifdef CONFIG_PRINT_TASKNAME + lldbg("Assertion failed at file:%s line: %d task: %s\n", + filename, lineno, rtcb->name); +#else + lldbg("Assertion failed at file:%s line: %d\n", + filename, lineno); +#endif + up_dumpstate(); + _up_assert(EXIT_FAILURE); +} + +/**************************************************************************** + * Name: up_assert_code + ****************************************************************************/ + +void up_assert_code(const uint8_t *filename, int lineno, int errorcode) +{ +#ifdef CONFIG_PRINT_TASKNAME + _TCB *rtcb = (_TCB*)g_readytorun.head; +#endif + + up_ledon(LED_ASSERTION); +#ifdef CONFIG_PRINT_TASKNAME + lldbg("Assertion failed at file:%s line: %d task: %s error code: %d\n", + filename, lineno, rtcb->name, errorcode); +#else + lldbg("Assertion failed at file:%s line: %d error code: %d\n", + filename, lineno, errorcode); +#endif + up_dumpstate(); + _up_assert(errorcode); +} + -- cgit v1.2.3