diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-02-25 23:05:37 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-02-25 23:05:37 +0000 |
commit | 11cdbe3e35d80775ba9887a995a1e3c124c7a063 (patch) | |
tree | f0a52c4be597206817b43cc3c53db56f5e1463af /nuttx/arch | |
parent | 0fc66dd545b21a2094f8d833955107d583bea953 (diff) | |
download | px4-nuttx-11cdbe3e35d80775ba9887a995a1e3c124c7a063.tar.gz px4-nuttx-11cdbe3e35d80775ba9887a995a1e3c124c7a063.tar.bz2 px4-nuttx-11cdbe3e35d80775ba9887a995a1e3c124c7a063.zip |
Add beginning of m9s12x GPIO support
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3317 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch')
-rwxr-xr-x | nuttx/arch/arm/src/lpc17xx/lpc17_irq.c | 3 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/Make.defs | 12 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_dumpgpio.c | 84 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_gpio.c | 438 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_gpioirq.c | 108 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_internal.h | 213 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_irq.c | 14 | ||||
-rwxr-xr-x | nuttx/arch/hc/src/m9s12/m9s12_pim.h | 1 |
8 files changed, 868 insertions, 5 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_irq.c b/nuttx/arch/arm/src/lpc17xx/lpc17_irq.c index 649db985f..dad1d1ca4 100755 --- a/nuttx/arch/arm/src/lpc17xx/lpc17_irq.c +++ b/nuttx/arch/arm/src/lpc17xx/lpc17_irq.c @@ -326,8 +326,6 @@ void up_irqinitialize(void) lpc17_dumpnvic("initial", LPC17_IRQ_NIRQS); -#ifndef CONFIG_SUPPRESS_INTERRUPTS - /* Initialize FIQs */ #ifdef CONFIG_ARCH_FIQ @@ -344,6 +342,7 @@ void up_irqinitialize(void) /* And finally, enable interrupts */ +#ifndef CONFIG_SUPPRESS_INTERRUPTS setbasepri(NVIC_SYSH_PRIORITY_MAX); irqrestore(0); #endif diff --git a/nuttx/arch/hc/src/m9s12/Make.defs b/nuttx/arch/hc/src/m9s12/Make.defs index 2c2c68a00..ea9d1934c 100755 --- a/nuttx/arch/hc/src/m9s12/Make.defs +++ b/nuttx/arch/hc/src/m9s12/Make.defs @@ -43,5 +43,13 @@ CMN_CSRCS = up_allocateheap.c up_blocktask.c up_copystate.c up_createstack.c \ up_udelay.c up_unblocktask.c up_usestack.c CHIP_ASRCS = m9s12_start.S m9s12_lowputc.S m9s12_saveusercontext.S -CHIP_CSRCS = m9s12_assert.c m9s12_serial.c m9s12_initialstate.c m9s12_irq.c \ - m9s12_timerisr.c +CHIP_CSRCS = m9s12_assert.c m9s12_gpio.c m9s12_initialstate.c m9s12_irq.c \ + m9s12_serial.c m9s12_timerisr.c + +ifeq ($(CONFIG_GPIO_IRQ),y) +CHIP_CSRCS += m9s12_gpioint.c +endif + +ifeq ($(CONFIG_DEBUG_GPIO),y) +CHIP_CSRCS += m9s12_gpiodbg.c +endif diff --git a/nuttx/arch/hc/src/m9s12/m9s12_dumpgpio.c b/nuttx/arch/hc/src/m9s12/m9s12_dumpgpio.c new file mode 100755 index 000000000..a10983a4d --- /dev/null +++ b/nuttx/arch/hc/src/m9s12/m9s12_dumpgpio.c @@ -0,0 +1,84 @@ +/**************************************************************************** + * arch/arm/src/m9s12/m9s12_dumpgpio.c + * arch/arm/src/chip/m9s12_dumpgpio.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <stdint.h> + +#include "m9s12_internal.h" + +#ifdef CONFIG_DEBUG_GPIO + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/************************************************************************************ + * Function: hcs12_dumpgpio + * + * Description: + * Dump all GPIO registers associated with the base address of the provided pinset. + * + ************************************************************************************/ + +int hcs12_dumpgpio(uint16_t pinset, const char *msg) +{ +#warning "Not implemented" + return -ENOSYS; +} + +#endif /* CONFIG_DEBUG_GPIO */ + diff --git a/nuttx/arch/hc/src/m9s12/m9s12_gpio.c b/nuttx/arch/hc/src/m9s12/m9s12_gpio.c new file mode 100755 index 000000000..58e61094d --- /dev/null +++ b/nuttx/arch/hc/src/m9s12/m9s12_gpio.c @@ -0,0 +1,438 @@ +/**************************************************************************** + * arch/arm/src/m9s12/m9s12_gpio.c + * arch/arm/src/chip/m9s12_gpio.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <stdint.h> +#include <stdbool.h> +#include <assert.h> +#include <errno.h> + +#include "up_arch.h" +#include "m9s12_internal.h" +#include "m9s12_pim.h" +#include "m9s12_mebi.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ +/* GPIO management macros: + * + * The GPIO configuration is represented by a 16-bit value encoded as follows: + * + * xxII OUUR DMGG GPPP + * || |||| ||| `-Pin number + * || |||| || `- Port number + * || |||| | `- PIM Ports + * || |||| `- Direction + * || |||`- Reduced drive + * || ||`- Polarity + * || |`- Pull up (or down) + * || `- Wired OR open drain + * |`- Interrupt or rising/falling (polarity) + * `- Interrupt + * + * NOTE: MEBI ports E and K can have special configurations as controlled by + * the PEAR and MODE registers. Those special configurations are not managed + * by the logic below; that logic is only intended to support general GPIO + * pin usage. + */ + +/* PIM ports (T,S,G,H,J,L) */ + +#define HCS12_PIM_NPORTS 6 + +/* MEBI ports (A,B,E,K) */ + +#define HCS12_MEBI_NPORTS 4 + +/* Which ports have which registers? */ + +#define HCS12_PORT_T (1 << 0) +#define HCS12_PORT_S (1 << 1) +#define HCS12_PORT_G (1 << 2) +#define HCS12_PORT_H (1 << 3) +#define HCS12_PORT_J (1 << 4) +#define HCS12_PORT_L (1 << 5) +#define HCS12_PORT_ALL 0x3f + +#define HCS12_IO_PORTS HCS12_PORT_ALL +#define HCS12_INPUT_PORTS HCS12_PORT_ALL +#define HCS12_DDR_PORTS HCS12_PORT_ALL +#define HCS12_RDR_PORTS HCS12_PORT_ALL +#define HCS12_PER_PORTS HCS12_PORT_ALL +#define HCS12_PS_PORTS HCS12_PORT_ALL +#define HCS12_WOM_PORTS (HCS12_PORT_S|HCS12_PORT_L) +#define HCS12_IE_PORTS (HCS12_PORT_G|HCS12_PORT_H|HCS12_PORT_J) +#define HCS12_IF_PORTS (HCS12_PORT_G|HCS12_PORT_H|HCS12_PORT_J) + +/* Decoding help macros */ + +#define HCS12_PIN(cfg) (((cfg) & GPIO_PIN_MASK) >> GPIO_PIN_SHIFT) +#define HCS12_PORTNDX(cfg) (((cfg) >> GPIO_PORT_SHIFT) & 7) +#define HCS12_PIMPORT(cfg) (((cfg) & GPIO_PORT_PIM) != 0) +#define HCS12_MEBIPORT(cfg) (((cfg) & GPIO_PORT_PIM) == 0) + +#define HCS12_PULL(cfg) (((cfg) & GPIO_PULLUP_MASK) >> GPIO_PULLUP_SHIFT) +# define HCS12_PULL_NONE 0 +# define HCS12_PULL_POLARITY 1 +# define HCS12_PULL_ENABLE 2 +# define HCS12_PULL_UP 2 +# define HCS12_PULL_DOWN 3 + +#define HCS12_INTERRUPT(cfg) (((cfg) & GPIO_INT_MASK) >> GPIO_INT_SHIFT) +# define HCS12_INT_NONE 0 +# define HCS12_INT_POLARITY 1 +# define HCS12_INT_ENABLE 2 +# define HCS12_INT_FALLING 2 +# define HCS12_INT_RISING 3 + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct mebi_portaddr_s +{ + uint16_t data; /* Data register */ + uint16_t ddr; /* Direction register */ +}; + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +static const struct mebi_portaddr_s mebi_portaddr[HCS12_MEBI_NPORTS] = +{ + {HCS12_MEBI_PORTA, HCS12_MEBI_DDRA}, /* Port A */ + {HCS12_MEBI_PORTB, HCS12_MEBI_DDRB}, /* Port B */ + {HCS12_MEBI_PORTE, HCS12_MEBI_DDRE}, /* Port E */ + {HCS12_MEBI_PORTK, HCS12_MEBI_DDRK} /* Port K */ +}; + +static uint8_t mebi_bits[HCS12_MEBI_NPORTS] = +{ + (1 << 0), (1 << 1), (1 << 4), (1 << 7) +}; + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Misc. Low-Level, Inline Helper Functions + ****************************************************************************/ + +static inline void gpio_writebit(uint16_t regaddr, uint8_t pin, bool set) +{ + uint8_t regval = getreg8(regaddr); + if (set) + { + regval |= (1 << pin); + } + else + { + regval &= ~(1 << pin); + } + putreg8(regval, regaddr); +} + +static inline bool gpio_readbit(uint16_t regaddr, uint8_t pin) +{ + uint8_t regval = getreg8(regaddr); + return ((regval & (1 << pin)) != 0); +} + +static inline void pim_direction(uint8_t portndx, uint8_t pin, bool output) +{ + gpio_writebit(HCS12_PIM_PORT_DDR(portndx), pin, output); +} + +static inline void mebi_direction(uint8_t portndx, uint8_t pin, bool output) +{ + gpio_writebit(mebi_portaddr[portndx].ddr, pin, output); +} + +static inline void pim_opendrain(uint8_t portndx, uint8_t pin, bool opendrain) +{ + DEBUGASSERT(!opendrain || (HCS12_WOM_PORTS & (1 << pin)) != 0); + gpio_writebit(HCS12_PIM_PORT_WOM(portndx), pin, opendrain); +} + +static inline void pim_pullpin(uint8_t portndx, uint8_t pin, uint8_t pull) +{ + bool enable = false; + bool polarity = false; + + if ((pull & HCS12_PULL_ENABLE) != 0) + { + enable = true; + if ((pull & HCS12_PULL_POLARITY) != 0) + { + polarity = true; + } + } + + gpio_writebit(HCS12_PIM_PORT_PER(portndx), pin, enable); + gpio_writebit(HCS12_PIM_PORT_PS(portndx), pin, polarity); +} + +static inline void mebi_pullport(uint8_t portndx, uint8_t pull) +{ + uint8_t regval = getreg8(HCS12_MEBI_PUCR); + if (pull == HCS12_PULL_UP) + { + regval |= mebi_bits[portndx]; + } + else + { + regval &= ~mebi_bits[portndx]; + } + putreg8(regval, HCS12_MEBI_PUCR); +} + +static inline void pim_rdpin(uint8_t portndx, uint8_t pin, bool rdenable) +{ + gpio_writebit(HCS12_PIM_PORT_RDR(portndx), pin, rdenable); +} + +static inline void mebi_rdport(uint8_t portndx, bool rdenable) +{ + uint8_t regval = getreg8(HCS12_MEBI_RDRIV); + if (rdenable) + { + regval |= mebi_bits[portndx]; + } + else + { + regval &= ~mebi_bits[portndx]; + } + putreg8(regval, HCS12_MEBI_RDRIV); +} + +static inline void pim_interrupt(uint8_t portndx, unsigned pin, uint8_t type) +{ + if (type != HCS12_INT_NONE) + { + DEBUGASSERT((HCS12_IE_PORTS & (1 << pin)) != 0); + gpio_writebit(HCS12_PIM_PORT_IE(portndx), pin, false); + gpio_writebit(HCS12_PIM_PORT_PS(portndx), pin, ((type & GPIO_INT_POLARITY) != 0)); + } + else if ((HCS12_IE_PORTS & (1 << pin)) != 0) + { + gpio_writebit(HCS12_PIM_PORT_IE(portndx), pin, false); + } +} + +/**************************************************************************** + * Name: pim_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ****************************************************************************/ + +static inline void pim_configgpio(uint16_t cfgset, uint8_t portndx, uint8_t pin) +{ + /* Sanity checking -- Check if the pin will be enabled as an interrupt + * (later) + */ + + DEBUGASSERT(portndx < HCS12_PIM_NPORTS); + +#ifdef CONFIG_DEBUG + if ((cfgset) & GPIO_INT_ENABLE) != 0) + { + /* Yes.. then it must not be tagged as an output */ + + ASSERT(((cfgset) & GPIO_DIRECTION) != GPIO_OUTPUT); + + /* If the pull-driver is also enabled, it must be enabled with a + * compatible priority. + */ + + if ((cfgset) & GPIO_PULL_ENABLE) != 0) + { + if ((cfgset) & GPIO_INT_POLARITY) != 0) + { + ASSERT(((cfgset) & GPIO_PULL_POLARITY) != 0); + } + else + { + ASSERT(((cfgset) & GPIO_PULL_POLARITY) = 0); + } + } + } +#endif + + pim_direction(portndx, pin, (((cfgset) & GPIO_DIRECTION) == GPIO_OUTPUT)); + pim_opendrain(portndx, pin, (((cfgset) & GPIO_OPENDRAN) != 0)); + pim_pullpin(portndx, pin, HCS12_PULL(cfgset)); + pim_rdpin(portndx, pin, (((cfgset) & GPIO_REDUCED) != 0)); + pim_interrupt(portndx, pin, HCS12_INTERRUPT(cfgset)); +} + +/**************************************************************************** + * Name: mebi_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ****************************************************************************/ + +static inline void mebi_configgpio(uint16_t cfgset, uint8_t portndx, uint8_t pin) +{ + DEBUGASSERT(portndx < HCS12_MEBI_NPORTS); + mebi_direction(portndx, pin, (((cfgset) & GPIO_DIRECTION) == GPIO_OUTPUT)); + mebi_pullport(portndx, HCS12_PULL(cfgset)); + mebi_rdport(portndx, (((cfgset) & GPIO_REDUCED) != 0)); +} + +/**************************************************************************** + * Read/Write Helpers + ****************************************************************************/ + +static inline void pim_gpiowrite(uint8_t portndx, uint8_t pin, bool value) +{ + uint16_t regaddr = HCS12_PIM_PORT_IO(portndx) + DEBUGASSERT(portndx < HCS12_PIM_NPORTS); + gpio_writebit(regaddr, pin, value); +} + +static inline void mebi_gpiowrite(uint8_t portndx, uint8_t pin, bool value) +{ + uint16_t regaddr; + DEBUGASSERT(portndx < HCS12_MEBI_NPORTS); + regaddr = mebi_portaddr[portndx].data; + gpio_writebit(regaddr, pin, value); +} + +static inline bool pim_gpioread(uint8_t portndx, uint8_t pin) +{ + uint16_t regaddr = HCS12_PIM_PORT_INPUT(portndx) + DEBUGASSERT(portndx < HCS12_PIM_NPORTS); + return gpio_readbit(regaddr, pin); +} + +static inline bool mebi_gpioread(uint8_t portndx, uint8_t pin) +{ + uint16_t regaddr; + DEBUGASSERT(portndx < HCS12_MEBI_NPORTS); + regaddr = mebi_portaddr[portndx].data; + return gpio_readbit(regaddr, pin); +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: hcs12_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ****************************************************************************/ + +int hcs12_configgpio(uint16_t cfgset) +{ + uint8_t portndx = HCS12_PORTNDX(cfgset); + uint8_t pin = HCS12_PIN(cfgset); + + if (HCS12_PIMPORT(cfgset)) + { + pim_configgpio(cfgset, portndx, pin); + } + else + { + mebi_configgpio(cfgset, portndx, pin); + } + return OK; +} + +/**************************************************************************** + * Name: hcs12_gpiowrite + * + * Description: + * Write one or zero to the selected GPIO pin + * + ****************************************************************************/ + +void hcs12_gpiowrite(uint16_t pinset, bool value) +{ + uint8_t portndx = HCS12_PORTNDX(pinset); + uint8_t pin = HCS12_PIN(pinset); + + DEBUGASSERT((pinset & GPIO_DIRECTION) == GPIO_OUTPUT); + if (HCS12_PIMPORT(pinset)) + { + pim_gpiowrite(portndx, pin, value); + } + else + { + mebi_gpiowrite(portndx, pin, value); + } +} + +/**************************************************************************** + * Name: hcs12_gpioread + * + * Description: + * Read one or zero from the selected GPIO pin + * + ****************************************************************************/ + +bool hcs12_gpioread(uint16_t pinset) +{ + uint8_t portndx = HCS12_PORTNDX(pinset); + uint8_t pin = HCS12_PIN(pinset); + + if (HCS12_PIMPORT(pinset)) + { + return pim_gpioread(portndx, pin); + } + else + { + return mebi_gpioread(portndx, pin); + } +} diff --git a/nuttx/arch/hc/src/m9s12/m9s12_gpioirq.c b/nuttx/arch/hc/src/m9s12/m9s12_gpioirq.c new file mode 100755 index 000000000..cc45426e1 --- /dev/null +++ b/nuttx/arch/hc/src/m9s12/m9s12_gpioirq.c @@ -0,0 +1,108 @@ +/**************************************************************************** + * arch/arm/src/m9s12/m9s12_gpioirq.c + * arch/arm/src/chip/m9s12_gpioirq.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 "m9s12_internal.h" + +#ifdef CONFIG_GPIO_IRQ + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: hcs12_gpioirqinitialize + * + * Description: + * Initialize logic to support a second level of interrupt decoding for + * GPIO pins. + * + ****************************************************************************/ + +void hcs12_gpioirqinitialize(void) +{ +#warning "Not implemented" +} + +/**************************************************************************** + * Name: hcs12_gpioirqenable + * + * Description: + * Enable the interrupt for specified GPIO IRQ + * + ****************************************************************************/ + +void hcs12_gpioirqenable(int irq) +{ +#warning "Not implemented" +} + +/**************************************************************************** + * Name: hcs12_gpioirqdisable + * + * Description: + * Disable the interrupt for specified GPIO IRQ + * + ****************************************************************************/ + +void hcs12_gpioirqdisable(int irq) +{ +#warning "Not implemented" +} + +#endif /* CONFIG_GPIO_IRQ */ + diff --git a/nuttx/arch/hc/src/m9s12/m9s12_internal.h b/nuttx/arch/hc/src/m9s12/m9s12_internal.h index 43d4188f2..643627f30 100755 --- a/nuttx/arch/hc/src/m9s12/m9s12_internal.h +++ b/nuttx/arch/hc/src/m9s12/m9s12_internal.h @@ -55,7 +55,132 @@ * Definitions ************************************************************************************/ -/* Configuration ********************************************************************/ +/* GPIO management macros: + * + * The GPIO configuration is represented by a 16-bit value encoded as follows: + * + * xxII OUUR DMGG GPPP + * || |||| ||| `-Pin number + * || |||| || `- Port number + * || |||| | `- PIM Ports + * || |||| `- Direction + * || |||`- Reduced drive + * || ||`- Polarity + * || |`- Pull up (or down) + * || `- Wired OR open drain + * |`- Interrupt or rising/falling (polarity) + * `- Interrupt + * + * NOTE: MEBI ports E and K can have special configurations as controlled by + * the PEAR and MODE registers. Those special configurations are not managed + * by the logic below; that logic is only intended to support general GPIO + * pin usage. + */ + +/* Interrupts: + * + * xxII xxxx xxxx xxxx + * + * For PIM ports G, H, and J. NOTE: If pull up/down is also selected, then + * it must be consistent with the selected interrupt edge (because both are + * controlled by the same polarity register): + * + * Rising edge <-> Pull down + * Falling Edge <-> Pull up + * + * Selecting input also selects direction == input (it is unless to specify + * GPIO_INPUT and an error if GPIO_OUTPUT is also specified) + */ + +#define GPIO_INT_SHIFT (12) +#define GPIO_INT_MASK (3 << GPIO_PULLUP_SHIFT) +# define GPIO_INT_POLARITY (1 << GPIO_PULLUP_SHIFT) +# define GPIO_INT_ENABLE (2 << GPIO_PULLUP_SHIFT) +# define GPIO_INT_FALLING (2 << GPIO_PULLUP_SHIFT) +# define GPIO_INT_RISING (3 << GPIO_PULLUP_SHIFT) + +/* Wired OR open-drain: + * + * xxxx Oxxx xxxx xxxx + * + * Only PIM ports S and L + */ + +#define GPIO_OPENDRAN (1 << 11) + +/* Pull up (or down): + * + * xxxx xUUx xxxx xxxx + * + * For PIM ports (T,S,G,H,J,L), selection is per-pin + * For MEBI ports (A,B,E,K), selection is per-port, polarity is ignored + */ + +#define GPIO_PULLUP_SHIFT (9) +#define GPIO_PULLUP_MASK (3 << GPIO_PULLUP_SHIFT) +# define GPIO_PULL_POLARITY (1 << GPIO_PULLUP_SHIFT) +# define GPIO_PULL_ENABLE (2 << GPIO_PULLUP_SHIFT) +# define GPIO_PULLUP (2 << GPIO_PULLUP_SHIFT) +# define GPIO_PULLDOWN (3 << GPIO_PULLUP_SHIFT) + +/* Reduced drive: + * + * xxxx xxxR xxxx xxxx + * + * For PIM ports (T,S,G,H,J,L), selection is per-pin + * For MEBI ports (A,B,E,K), selection is per-port + */ + +#define GPIO_REDUCED (1 << 8) + +/* Data direction (All ports -- A,B,E,K,T,S,G,H,J,L) + * + * xxxx xxxx Dxxx xxxx + * + */ + +#define GPIO_DIRECTION (1 << 7) +# define GPIO_INPUT (0) +# define GPIO_OUTPUT GPIO_DIRECTION + +/* Port selection + * + * xxxx xxxx xGGG Gxxx + * + * Ports A, B, E, and K reside in the MEBI block + * Ports T,S,G,H,J, and L reside in the PIM block. + */ + +#define GPIO_PORT_SHIFT 3 +#define GPIO_PORT_MASK (15 << GPIO_PORT_SHIFT) +# define GPIO_PORT_A (0 << GPIO_PORT_SHIFT) +# define GPIO_PORT_B (1 << GPIO_PORT_SHIFT) +# define GPIO_PORT_E (2 << GPIO_PORT_SHIFT) +# define GPIO_PORT_K (3 << GPIO_PORT_SHIFT) + +# define GPIO_PORT_PIM (8 << GPIO_PORT_SHIFT) +# define GPIO_PORT_T (8 << GPIO_PORT_SHIFT) +# define GPIO_PORT_S (9 << GPIO_PORT_SHIFT +# define GPIO_PORT_G (10 << GPIO_PORT_SHIFT) +# define GPIO_PORT_H (11 << GPIO_PORT_SHIFT) +# define GPIO_PORT_J (12 << GPIO_PORT_SHIFT) +# define GPIO_PORT_L (13 << GPIO_PORT_SHIFT) + +/* Pin numbers + * + * xxxx xxxx xxxx xPPP + */ + +#define GPIO_PIN_SHIFT (0) +#define GPIO_PIN_MASK (7 << GPIO_PORT_SHIFT) +# define GPIO_PIN_0 (0 << GPIO_PORT_SHIFT) +# define GPIO_PIN_1 (1 << GPIO_PORT_SHIFT) +# define GPIO_PIN_2 (2 << GPIO_PORT_SHIFT) +# define GPIO_PIN_3 (3 << GPIO_PORT_SHIFT) +# define GPIO_PIN_4 (4 << GPIO_PORT_SHIFT) +# define GPIO_PIN_5 (5 << GPIO_PORT_SHIFT) +# define GPIO_PIN_6 (6 << GPIO_PORT_SHIFT) +# define GPIO_PIN_7 (7 << GPIO_PORT_SHIFT) /************************************************************************************ * Inline Functions @@ -80,6 +205,92 @@ extern "C" { ************************************************************************************/ /************************************************************************************ + * Name: hcs12_gpioirqinitialize + * + * Description: + * Initialize logic to support a second level of interrupt decoding for GPIO pins. + * + ************************************************************************************/ + +#ifdef CONFIG_GPIO_IRQ +EXTERN void hcs12_gpioirqinitialize(void); +#else +# define hcs12_gpioirqinitialize() +#endif + +/************************************************************************************ + * Name: hcs12_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ************************************************************************************/ + +EXTERN int hcs12_configgpio(uint16_t cfgset); + +/************************************************************************************ + * Name: hcs12_gpiowrite + * + * Description: + * Write one or zero to the selected GPIO pin + * + ************************************************************************************/ + +EXTERN void hcs12_gpiowrite(uint16_t pinset, bool value); + +/************************************************************************************ + * Name: hcs12_gpioread + * + * Description: + * Read one or zero from the selected GPIO pin + * + ************************************************************************************/ + +EXTERN bool hcs12_gpioread(uint16_t pinset); + +/************************************************************************************ + * Name: hcs12_gpioirqenable + * + * Description: + * Enable the interrupt for specified GPIO IRQ + * + ************************************************************************************/ + +#ifdef CONFIG_GPIO_IRQ +EXTERN void hcs12_gpioirqenable(int irq); +#else +# define hcs12_gpioirqenable(irq) +#endif + +/************************************************************************************ + * Name: hcs12_gpioirqdisable + * + * Description: + * Disable the interrupt for specified GPIO IRQ + * + ************************************************************************************/ + +#ifdef CONFIG_GPIO_IRQ +EXTERN void hcs12_gpioirqdisable(int irq); +#else +# define hcs12_gpioirqdisable(irq) +#endif + +/************************************************************************************ + * Function: hcs12_dumpgpio + * + * Description: + * Dump all GPIO registers associated with the base address of the provided pinset. + * + ************************************************************************************/ + +#ifdef CONFIG_DEBUG_GPIO +EXTERN int hcs12_dumpgpio(uint16_t pinset, const char *msg); +#else +# define hcs12_dumpgpio(p,m) +#endif + +/************************************************************************************ * Function: hcs12_ethinitialize * * Description: diff --git a/nuttx/arch/hc/src/m9s12/m9s12_irq.c b/nuttx/arch/hc/src/m9s12/m9s12_irq.c index 1fb59d551..076ef0b3c 100755 --- a/nuttx/arch/hc/src/m9s12/m9s12_irq.c +++ b/nuttx/arch/hc/src/m9s12/m9s12_irq.c @@ -83,4 +83,18 @@ void up_irqinitialize(void) /* currents_regs is non-NULL only while processing an interrupt */ current_regs = NULL; + + /* Initialize logic to support a second level of interrupt decoding for + * GPIO pins. + */ + +#ifdef CONFIG_GPIO_IRQ + lpc17_gpioirqinitialize(); +#endif + + /* And finally, enable interrupts */ + +#ifndef CONFIG_SUPPRESS_INTERRUPTS + irqrestore(0); +#endif } diff --git a/nuttx/arch/hc/src/m9s12/m9s12_pim.h b/nuttx/arch/hc/src/m9s12/m9s12_pim.h index 8b857fdb6..68b702382 100755 --- a/nuttx/arch/hc/src/m9s12/m9s12_pim.h +++ b/nuttx/arch/hc/src/m9s12/m9s12_pim.h @@ -98,6 +98,7 @@ #define HCS12_PIM_PORT_RDR(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_RDR_OFFSET) #define HCS12_PIM_PORT_PER(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_PER_OFFSET) #define HCS12_PIM_PORT_PS(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_PS_OFFSET) +#define HCS12_PIM_PORT_WOM(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_WOM_OFFSET) #define HCS12_PIM_PORT_IE(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_IE_OFFSET) #define HCS12_PIM_PORT_IF(n) (HCS12_PIM_PORT_BASE(n) + HCS12_PIM_IF_OFFSET) |