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Diffstat (limited to 'nuttx/configs/xtrs/src/xtr_serial.c')
| -rw-r--r-- | nuttx/configs/xtrs/src/xtr_serial.c | 420 |
1 files changed, 420 insertions, 0 deletions
diff --git a/nuttx/configs/xtrs/src/xtr_serial.c b/nuttx/configs/xtrs/src/xtr_serial.c new file mode 100644 index 000000000..06a38058a --- /dev/null +++ b/nuttx/configs/xtrs/src/xtr_serial.c @@ -0,0 +1,420 @@ +/**************************************************************************** + * board/xtr_serial.c + * + * Copyright (C) 2008 Jacques Pelletier. All rights reserved. + * Author: Jacques Pelletier + * + * This file is a part of NuttX and hence + * + * Copyright (C) 2008 Gregory Nutt. All rights reserved. + * + * 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 <nuttx/config.h> + +#include <sys/types.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/irq.h> +#include <nuttx/arch.h> +#include <nuttx/serial.h> +#include <arch/serial.h> + +#include "up_arch.h" +#include "os_internal.h" +#include "up_internal.h" + +/* Defined in drivers/dev_lowconsole.c */ + +#ifdef CONFIG_USE_LOWCONSOLE +extern void lowconsole_init(void); +#endif + +#if CONFIG_NFILE_DESCRIPTORS > 0 +#if defined(CONFIG_DEV_CONSOLE) && !defined(CONFIG_DEV_LOWCONSOLE) +/**************************************************************************** + * Definitions + ****************************************************************************/ +#define TRSDOS 0 /* TRSDOS 1.3 */ +#define LDOS 1 /* LDOS 5.3.1 */ + +#define MODEM_STATUS 0xe8 +#define RESET 0xe8 +#define BAUD 0xe9 +#define STATUS 0xea +#define CONTROL 0xea +#define RECV_REG 0xeb +#define XMIT_REG 0xeb + +#define XMIT_REG_EMPTY 0x40 + +#define WRINTMASK 0xe0 + +#define MASK_XMIT_INT 0x10 +#define MASK_RECV_INT 0x20 +#define MASK_ERR_INT 0x40 + +#if TRSDOS +#define WRINTMASK_SHADOW 0x4213 +#define XMIT_INT_VECTOR 0x4207 +#define RECV_INT_VECTOR 0x420a +#endif + +#if LDOS +#define WRINTMASK_SHADOW 0x4474 +#define XMIT_INT_VECTOR 0x447D +#define RECV_INT_VECTOR 0x447F +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * 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_ioctl(struct file *filep, int cmd, unsigned long arg); +static int up_receive(struct uart_dev_s *dev, uint32 *status); +static void up_rxint(struct uart_dev_s *dev, boolean enable); +static boolean 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, boolean enable); +static boolean up_txready(struct uart_dev_s *dev); +static boolean up_txempty(struct uart_dev_s *dev); + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +struct uart_ops_s g_uart_ops = +{ + up_setup, /* setup */ + up_shutdown, /* shutdown */ + up_attach, /* attach */ + up_detach, /* detach */ + up_ioctl, /* ioctl */ + up_receive, /* receive */ + up_rxint, /* rxint */ + up_rxavailable, /* rxavailable */ + up_send, /* send */ + up_txint, /* txint */ + up_txready, /* txready */ + up_txempty, /* txempty */ +}; + +/* I/O buffers */ + +static char g_uartrxbuffer[CONFIG_UART_RXBUFSIZE]; +static char g_uarttxbuffer[CONFIG_UART_TXBUFSIZE]; + +/* This describes the state of the fake UART port. */ + +static uart_dev_t g_uartport = +{ + 0, /* open_count */ + FALSE, /* xmitwaiting */ + FALSE, /* recvwaiting */ + FALSE, /* isconsole */ + { 1 }, /* closesem */ + { 0 }, /* xmitsem */ + { 0 }, /* recvsem */ + { /* xmit */ + { 1 }, /* sem */ + 0, /* head */ + 0, /* tail */ + CONFIG_UART_TXBUFSIZE, /* size */ + g_uarttxbuffer, /* buffer */ + }, + { /* recv */ + { 1 }, /* sem */ + 0, /* head */ + 0, /* tail */ + CONFIG_UART_RXBUFSIZE, /* size */ + g_uartrxbuffer, /* buffer */ + }, + &g_uart_ops, /* ops */ + NULL, /* priv */ +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_setup + * + * Description: + * Configure the UART baud, bits, parity, fifos, etc. This + * method is called the first time that the serial port is + * opened. + * + ****************************************************************************/ + +static int up_setup(struct uart_dev_s *dev) +{ + outp(RESET, 0); + outp(CONTROL, ctrl); + outp(BAUD, baud); + + return OK; +} + +/**************************************************************************** + * Name: up_shutdown + * + * Description: + * Disable the UART. This method is called when the serial + * port is closed + * + ****************************************************************************/ + +static void up_shutdown(struct uart_dev_s *dev) +{ +} + +/**************************************************************************** + * Name: up_attach + * + * Description: + * Configure the UART 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) +{ +// SDCC complains here +// *((void (*)()) XMIT_INT_VECTOR) = rs232_xmitisr; +// *((void (*)()) RECV_INT_VECTOR) = rs232_recvisr; + *((int *) XMIT_INT_VECTOR) = (int) rs232_xmitisr; + *((int *) RECV_INT_VECTOR) = (int) rs232_recvisr; + + *(char *)WRINTMASK_SHADOW &= ~(MASK_ERR_INT | MASK_XMIT_INT); + outp(WRINTMASK, *(char *)WRINTMASK_SHADOW |= MASK_RECV_INT); + + return OK; +} + +/**************************************************************************** + * Name: up_detach + * + * Description: + * Detach UART 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) +{ + outp(WRINTMASK, *(char *)WRINTMASK_SHADOW &= ~(MASK_ERR_INT | MASK_RECV_INT | MASK_XMIT_INT)); + *((int *) XMIT_INT_VECTOR) = 0x35fa; + *((int *) RECV_INT_VECTOR) = 0x35fa; +} + +/**************************************************************************** + * 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) +{ + *get_errno_ptr() = ENOTTY; + return ERROR; +} + +/**************************************************************************** + * Name: up_receive + * + * Description: + * Called (usually) from the interrupt level to receive one + * character from the UART. Error bits associated with the + * receipt are provided in the the return 'status'. + * + ****************************************************************************/ + +static int up_receive(struct uart_dev_s *dev, uint32 *status) +{ +// uint8 ch = up_lowgetc(); + + *status = 0; + return ch; +} + +/**************************************************************************** + * Name: up_rxint + * + * Description: + * Call to enable or disable RX interrupts + * + ****************************************************************************/ + +static void up_rxint(struct uart_dev_s *dev, boolean enable) +{ +} + +/**************************************************************************** + * Name: up_rxavailable + * + * Description: + * Return TRUE if the receive fifo is not empty + * + ****************************************************************************/ + +static boolean up_rxavailable(struct uart_dev_s *dev) +{ + return TRUE; +} + +/**************************************************************************** + * Name: up_send + * + * Description: + * This method will send one byte on the UART + * + ****************************************************************************/ + +static void up_send(struct uart_dev_s *dev, int ch) +{ + up_lowputc(ch); +} + +/**************************************************************************** + * Name: up_txint + * + * Description: + * Call to enable or disable TX interrupts + * + ****************************************************************************/ + +static void up_txint(struct uart_dev_s *dev, boolean enable) +{ +} + +/**************************************************************************** + * Name: up_txready + * + * Description: + * Return TRUE if the transmit fifo is not full + * + ****************************************************************************/ + +static boolean up_txready(struct uart_dev_s *dev) +{ + return TRUE; +} + +/**************************************************************************** + * Name: up_txempty + * + * Description: + * Return TRUE if the transmit fifo is empty + * + ****************************************************************************/ + +static boolean up_txempty(struct uart_dev_s *dev) +{ + return TRUE; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: up_serialinit + * + * Description: + * Performs the low level UART initialization early in + * debug so that the serial console will be available + * during bootup. This must be called before up_serialinit. + * + ****************************************************************************/ + +void up_earlyserialinit(void) +{ +} +#endif /* CONFIG_DEV_CONSOLE && !CONFIG_DEV_LOWCONSOLE */ + +/**************************************************************************** + * Name: up_serialinit + * + * Description: + * Register serial ports. This assumes + * that up_earlyserialinit was called previously. + * + ****************************************************************************/ + +void up_serialinit(void) +{ +#if defined(CONFIG_DEV_LOWCONSOLE) + (void)lowconsole_init(); +#elif defined(CONFIG_DEV_CONSOLE) + (void)uart_register("/dev/console", &g_uartport); + (void)uart_register("/dev/ttyS0", &g_uartport); +#endif +} +#endif /* CONFIG_NFILE_DESCRIPTORS */ + +/**************************************************************************** + * Name: up_putc + * + * Description: + * Provide priority, low-level access to support OS debug + * writes + * + ****************************************************************************/ + +int up_putc(int ch) +{ + up_lowputc(ch); + return 0; +} |