From 8b2391b33f7c59dfb599bb99dbe6156493196888 Mon Sep 17 00:00:00 2001 From: patacongo Date: Tue, 12 Oct 2010 01:30:27 +0000 Subject: [PATCH] Add skeleton of GPIO utilities git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2999 42af7a65-404d-4744-a932-0658087f49c3 --- arch/avr/src/at91uc3/Make.defs | 4 +- arch/avr/src/at91uc3/at91uc3_gpio.c | 115 ++++++++++++++++++++ arch/avr/src/at91uc3/at91uc3_internal.h | 133 +++++++++++++++++++++++- 3 files changed, 245 insertions(+), 7 deletions(-) create mode 100644 arch/avr/src/at91uc3/at91uc3_gpio.c diff --git a/arch/avr/src/at91uc3/Make.defs b/arch/avr/src/at91uc3/Make.defs index 59f1fce298..58c4258667 100755 --- a/arch/avr/src/at91uc3/Make.defs +++ b/arch/avr/src/at91uc3/Make.defs @@ -51,8 +51,8 @@ CMN_CSRCS = up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \ # Required AT91UC3 files CHIP_ASRCS = -CHIP_CSRCS = at91uc3_clkinit.c at91uc3_irq.c at91uc3_lowconsole.c \ - at91uc3_lowinit.c at91uc3_serial.c +CHIP_CSRCS = at91uc3_clkinit.c at91uc3_gpio.c at91uc3_irq.c \ + at91uc3_lowconsole.c at91uc3_lowinit.c at91uc3_serial.c # Configuration-dependent AT91UC3 files diff --git a/arch/avr/src/at91uc3/at91uc3_gpio.c b/arch/avr/src/at91uc3/at91uc3_gpio.c new file mode 100644 index 0000000000..a2a98a98d0 --- /dev/null +++ b/arch/avr/src/at91uc3/at91uc3_gpio.c @@ -0,0 +1,115 @@ +/************************************************************************** + * arch/avr/src/at91uc3/at91uc3_gpio.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 + +#include "at91uc3_config.h" +#include "up_internal.h" +#include "at91uc3_internal.h" + +/************************************************************************** + * Private Definitions + **************************************************************************/ + +/************************************************************************** + * Private Types + **************************************************************************/ + +/************************************************************************** + * Private Function Prototypes + **************************************************************************/ + +/************************************************************************** + * Global Variables + **************************************************************************/ + +/************************************************************************** + * Private Variables + **************************************************************************/ + +/************************************************************************** + * Private Functions + **************************************************************************/ + +/************************************************************************** + * Public Functions + **************************************************************************/ + +/************************************************************************************ + * Name: at91uc3_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ************************************************************************************/ + +int at91uc3_configgpio(uint32_t cfgset) +{ +#warning "Not Implemented" + return -ENOSYS; +} + +/************************************************************************************ + * Name: at91uc3_gpiowrite + * + * Description: + * Write one or zero to the selected GPIO pin + * + ************************************************************************************/ + +void at91uc3_gpiowrite(uint32_t pinset, bool value) +{ +#warning "Not Implemented" +} + +/************************************************************************************ + * Name: at91uc3_gpioread + * + * Description: + * Read one or zero from the selected GPIO pin + * + ************************************************************************************/ + +bool at91uc3_gpioread(uint32_t pinset) +{ +#warning "Not Implemented" + return false; +} diff --git a/arch/avr/src/at91uc3/at91uc3_internal.h b/arch/avr/src/at91uc3/at91uc3_internal.h index 23cfc6632c..c68c9044da 100755 --- a/arch/avr/src/at91uc3/at91uc3_internal.h +++ b/arch/avr/src/at91uc3/at91uc3_internal.h @@ -49,16 +49,103 @@ * Pre-processor Definitions ************************************************************************************/ +/* Bit-encoded input to at91uc3_configgpio() ****************************************/ + +/* 32-bit Encoding: + * xxxx xxxx xxxx xxxF MMIU VXXG PPPB BBBB + */ + +/* Glitch Filter Enable: + * .... .... .... ...F .... .... .... .... + */ + + #define GPIO_GLITCH (1 << 16) /* Bit 16: Glitch filter enable */ + +/* Interrupt modes (valid only if GPIO_INTR==1) + * .... .... .... .... MM.. .... .... .... + */ + +#define GPIO_INTMODE_SHIFT (14) /* Bits 14-15: Interrupt mode */ +#define GPIO_INTMODE_MASK (3 << GPIO_INTMODE_SHIFT) +# define GPIO_INTMODE_BOTH (0 << GPIO_INTMODE_SHIFT) +# define GPIO_INTMODE_RISING (1 << GPIO_INTMODE_SHIFT) +# define GPIO_INTMODE_FALLING (2 << GPIO_INTMODE_SHIFT) + +/* Interrupt enable + * .... .... .... .... ..I. .... .... .... + */ + +#define GPIO_INTR (1 << 13) /* Bit 13: Interrupt enable */ + +/* Pull-up enable + * .... .... .... .... ...U .... .... .... + */ + +#define GPIO_PULLUP (1 << 12) /* Bit 12: Pull-up enable */ + +/* Output value (Valid only if GPIO_ENABLE==1 and GPIO_OUTPUT==1) + * .... .... .... .... .... V... .... .... + */ + +#define GPIO_VALUE (1 << 11) /* Bit 11: Output value */ + +/* Peripheral MUX setting (valid only if GPIO_PERIPH) + * .... .... .... .... .... .XX. .... .... + */ + +#define GPIO_MUX_SHIFT (9) /* Bits 9-10: Peripheral MUX */ +#define GPIO_MUX_MASK (3 << GPIO_MUX_SHIFT) +# define GPIO_MUX_0 (0 << GPIO_MUX_SHIFT) /* PMR0=0 PMR1=0 */ +# define GPIO_MUX_1 (1 << GPIO_MUX_SHIFT) /* PMR0=1 PMR1=0 */ +# define GPIO_MUX_2 (2 << GPIO_MUX_SHIFT) /* PMR0=0 PMR1=1 */ +# define GPIO_MUX_3 (3 << GPIO_MUX_SHIFT) /* PMR0=1 PMR1=1 */ + +/* GPIO Enable (1) or Peripheral Enable (0) + * .... .... .... .... .... ...G .... .... + */ + +#define GPIO_ENABLE (1 << 8) /* Bit 8: GPIO enable */ +#define GPIO_PERIPH (0) + + +/* Port Number + * .... .... .... .... .... .... PPP. .... + */ + +#define GPIO_PORT_SHIFT (5) /* Bits 5-7: Port number */ +#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT) + +/* Pin number: + * .... .... .... .... .... .... ...B BBBB + */ + +#define GPIO_PIN_SHIFT (0) /* Bits 0-4: Port number */ +#define GPIO_PIN_MASK (0x1f << GPIO_PIN_SHIFT) + /************************************************************************************ * Public Types ************************************************************************************/ +#ifndef __ASSEMBLY__ + +/************************************************************************************ + * Inline Functions + ************************************************************************************/ + /************************************************************************************ * Public Data ************************************************************************************/ +#undef EXTERN +#if defined(__cplusplus) +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + /************************************************************************************ - * Public Functions + * Public Function Prototypes ************************************************************************************/ /************************************************************************************ @@ -69,7 +156,7 @@ * ************************************************************************************/ -extern void up_clkinitialize(void); +EXTERN void up_clkinitialize(void); /****************************************************************************** * Name: usart_reset @@ -79,7 +166,7 @@ extern void up_clkinitialize(void); * ******************************************************************************/ -extern void usart_reset(uintptr_t usart_base); +EXTERN void usart_reset(uintptr_t usart_base); /****************************************************************************** * Name: usart_configure @@ -102,7 +189,7 @@ void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity, * ************************************************************************************/ -extern void up_consoleinit(void); +EXTERN void up_consoleinit(void); /************************************************************************************ * Name: up_boardinit @@ -113,7 +200,43 @@ extern void up_consoleinit(void); * ************************************************************************************/ -extern void up_boardinitialize(void); +EXTERN void up_boardinitialize(void); +/************************************************************************************ + * Name: at91uc3_configgpio + * + * Description: + * Configure a GPIO pin based on bit-encoded description of the pin. + * + ************************************************************************************/ + +EXTERN int at91uc3_configgpio(uint32_t cfgset); + +/************************************************************************************ + * Name: at91uc3_gpiowrite + * + * Description: + * Write one or zero to the selected GPIO pin + * + ************************************************************************************/ + +EXTERN void at91uc3_gpiowrite(uint32_t pinset, bool value); + +/************************************************************************************ + * Name: at91uc3_gpioread + * + * Description: + * Read one or zero from the selected GPIO pin + * + ************************************************************************************/ + +EXTERN bool at91uc3_gpioread(uint32_t pinset); + +#undef EXTERN +#if defined(__cplusplus) +} +#endif + +#endif /* __ASSEMBLY__ */ #endif /* __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H */