diff --git a/bsp/stm32f10x/drivers/gpio.c b/bsp/stm32f10x/drivers/gpio.c new file mode 100644 index 0000000000..e7a2f7c3ca --- /dev/null +++ b/bsp/stm32f10x/drivers/gpio.c @@ -0,0 +1,265 @@ +/* + * File : gpio.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2015, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2015-03-24 Bright the first version + */ + +#include +#include +#include + +#ifdef RT_USING_PIN + +#define STM32F10X_PIN_NUMBERS 100 + +#define __STM32_PIN(index, rcc, gpio, gpio_index) { 0, RCC_##rcc##Periph_GPIO##gpio, GPIO##gpio, GPIO_Pin_##gpio_index} +#define __STM32_PIN_DEFAULT {-1, 0, 0, 0} + +/* STM32 GPIO driver */ +struct pin_index +{ + int index; + uint32_t rcc; + GPIO_TypeDef *gpio; + uint32_t pin; +}; + +static const struct pin_index pins[] = +{ +#if (STM32F10X_PIN_NUMBERS == 100) + __STM32_PIN_DEFAULT, + __STM32_PIN(1, APB2, E, 2), + __STM32_PIN(2, APB2, E, 3), + __STM32_PIN(3, APB2, E, 4), + __STM32_PIN(4, APB2, E, 5), + __STM32_PIN(5, APB2, E, 6), + __STM32_PIN_DEFAULT, + __STM32_PIN(7, APB2, C, 13), + __STM32_PIN(8, APB2, C, 14), + __STM32_PIN(9, APB2, C, 15), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN(15, APB2, C, 0), + __STM32_PIN(16, APB2, C, 1), + __STM32_PIN(17, APB2, C, 2), + __STM32_PIN(18, APB2, C, 3), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN(23, APB2, A, 0), + __STM32_PIN(24, APB2, A, 1), + __STM32_PIN(25, APB2, A, 2), + __STM32_PIN(26, APB2, A, 3), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN(29, APB2, A, 4), + __STM32_PIN(30, APB2, A, 5), + __STM32_PIN(31, APB2, A, 6), + __STM32_PIN(32, APB2, A, 7), + __STM32_PIN(33, APB2, C, 4), + __STM32_PIN(34, APB2, C, 5), + __STM32_PIN(35, APB2, B, 0), + __STM32_PIN(36, APB2, B, 1), + __STM32_PIN(37, APB2, B, 2), + __STM32_PIN(38, APB2, E, 7), + __STM32_PIN(39, APB2, E, 8), + __STM32_PIN(40, APB2, E, 9), + __STM32_PIN(41, APB2, E, 10), + __STM32_PIN(42, APB2, E, 11), + __STM32_PIN(43, APB2, E, 12), + __STM32_PIN(44, APB2, E, 13), + __STM32_PIN(45, APB2, E, 14), + __STM32_PIN(46, APB2, E, 15), + __STM32_PIN(47, APB2, B, 10), + __STM32_PIN(48, APB2, B, 11), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN(51, APB2, B, 12), + __STM32_PIN(52, APB2, B, 13), + __STM32_PIN(53, APB2, B, 14), + __STM32_PIN(54, APB2, B, 15), + __STM32_PIN(55, APB2, D, 8), + __STM32_PIN(56, APB2, D, 9), + __STM32_PIN(57, APB2, D, 10), + __STM32_PIN(58, APB2, D, 11), + __STM32_PIN(59, APB2, D, 12), + __STM32_PIN(60, APB2, D, 13), + __STM32_PIN(61, APB2, D, 14), + __STM32_PIN(62, APB2, D, 15), + __STM32_PIN(63, APB2, C, 6), + __STM32_PIN(64, APB2, C, 7), + __STM32_PIN(65, APB2, C, 8), + __STM32_PIN(66, APB2, C, 9), + __STM32_PIN(67, APB2, A, 8), + __STM32_PIN(68, APB2, A, 9), + __STM32_PIN(69, APB2, A, 10), + __STM32_PIN(70, APB2, A, 11), + __STM32_PIN(71, APB2, A, 12), + __STM32_PIN(72, APB2, A, 13), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, + __STM32_PIN(76, APB2, A, 14), + __STM32_PIN(77, APB2, A, 15), + __STM32_PIN(78, APB2, C, 10), + __STM32_PIN(79, APB2, C, 11), + __STM32_PIN(80, APB2, C, 12), + __STM32_PIN(81, APB2, D, 0), + __STM32_PIN(82, APB2, D, 1), + __STM32_PIN(83, APB2, D, 2), + __STM32_PIN(84, APB2, D, 3), + __STM32_PIN(85, APB2, D, 4), + __STM32_PIN(86, APB2, D, 5), + __STM32_PIN(87, APB2, D, 6), + __STM32_PIN(88, APB2, D, 7), + __STM32_PIN(89, APB2, B, 3), + __STM32_PIN(90, APB2, B, 4), + __STM32_PIN(91, APB2, B, 5), + __STM32_PIN(92, APB2, B, 6), + __STM32_PIN(93, APB2, B, 7), + __STM32_PIN_DEFAULT, + __STM32_PIN(95, APB2, B, 8), + __STM32_PIN(96, APB2, B, 9), + __STM32_PIN(97, APB2, E, 0), + __STM32_PIN(98, APB2, E, 1), + __STM32_PIN_DEFAULT, + __STM32_PIN_DEFAULT, +#endif +}; + + +#define ITEM_NUM(items) sizeof(items)/sizeof(items[0]) +const struct pin_index *get_pin(uint8_t pin) +{ + const struct pin_index *index; + + if (pin < ITEM_NUM(pins)) + { + index = &pins[pin]; + if (index->index == -1) + index = RT_NULL; + } + else + { + index = RT_NULL; + } + + return index; +}; + +void stm32_pin_write(rt_device_t dev, rt_base_t pin, rt_base_t value) +{ + const struct pin_index *index; + + index = get_pin(pin); + if (index == RT_NULL) + { + return; + } + + if (value == PIN_LOW) + { + GPIO_ResetBits(index->gpio, index->pin); + } + else + { + GPIO_SetBits(index->gpio, index->pin); + } +} + +int stm32_pin_read(rt_device_t dev, rt_base_t pin) +{ + int value; + const struct pin_index *index; + + value = PIN_LOW; + + index = get_pin(pin); + if (index == RT_NULL) + { + return value; + } + + if (GPIO_ReadInputDataBit(index->gpio, index->pin) == Bit_RESET) + { + value = PIN_LOW; + } + else + { + value = PIN_HIGH; + } + + return value; +} + +void stm32_pin_mode(rt_device_t dev, rt_base_t pin, rt_base_t mode) +{ + const struct pin_index *index; + GPIO_InitTypeDef GPIO_InitStructure; + + index = get_pin(pin); + if (index == RT_NULL) + { + return; + } + + /* GPIO Periph clock enable */ + RCC_APB2PeriphClockCmd(index->rcc, ENABLE); + + /* Configure GPIO_InitStructure */ + GPIO_InitStructure.GPIO_Pin = index->pin; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + + if (mode == PIN_MODE_OUTPUT) + { + /* output setting */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; + } + else if (mode == PIN_MODE_INPUT) + { + /* input setting: not pull. */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + } + else if (mode == PIN_MODE_INPUT_PULLUP) + { + /* input setting: pull up. */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; + } + else + { + /* input setting:default. */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; + } + GPIO_Init(index->gpio, &GPIO_InitStructure); +} + +const static struct rt_pin_ops _stm32_pin_ops = +{ + stm32_pin_mode, + stm32_pin_write, + stm32_pin_read, +}; + +int stm32_hw_pin_init(void) +{ + int result; + + result = rt_device_pin_register("pin", &_stm32_pin_ops, RT_NULL); + return result; +} +INIT_BOARD_EXPORT(stm32_hw_pin_init); + +#endif diff --git a/bsp/stm32f10x/drivers/gpio.h b/bsp/stm32f10x/drivers/gpio.h new file mode 100644 index 0000000000..a4947b100d --- /dev/null +++ b/bsp/stm32f10x/drivers/gpio.h @@ -0,0 +1,19 @@ +/* + * File : gpio.h + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2015, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2015-01-05 Bernard the first version + */ +#ifndef GPIO_H__ +#define GPIO_H__ + +int stm32_hw_pin_init(void); + +#endif