/* * File : gpio.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * Change Logs: * Date Author Notes * 2017-11-20 DQL the first version */ #include #include #include #ifdef RT_USING_PIN #define STM32L476_PIN_NUMBERS 64 //[48, 64, 100, 144 ] #define __STM32_PIN(index, gpio, gpio_index) \ { \ index, GPIO##gpio##_CLK_ENABLE, GPIO##gpio, GPIO_PIN_##gpio_index \ } #define __STM32_PIN_DEFAULT \ { \ -1, 0, 0, 0 \ } static void GPIOA_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOA_CLK_ENABLE __HAL_RCC_GPIOA_CLK_ENABLE(); #endif } static void GPIOB_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOB_CLK_ENABLE __HAL_RCC_GPIOB_CLK_ENABLE(); #endif } static void GPIOC_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOC_CLK_ENABLE __HAL_RCC_GPIOC_CLK_ENABLE(); #endif } #if (STM32L476_PIN_NUMBERS !=48) static void GPIOD_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOD_CLK_ENABLE __HAL_RCC_GPIOD_CLK_ENABLE(); #endif } #if (STM32L476_PIN_NUMBERS !=64) static void GPIOE_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOE_CLK_ENABLE __HAL_RCC_GPIOE_CLK_ENABLE(); #endif } static void GPIOF_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOF_CLK_ENABLE __HAL_RCC_GPIOF_CLK_ENABLE(); #endif } static void GPIOG_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOG_CLK_ENABLE __HAL_RCC_GPIOG_CLK_ENABLE(); #endif } static void GPIOH_CLK_ENABLE(void) { #ifdef __HAL_RCC_GPIOH_CLK_ENABLE __HAL_RCC_GPIOH_CLK_ENABLE(); #endif } #endif #endif /* STM32 GPIO driver */ struct pin_index { int index; void (*rcc)(void); GPIO_TypeDef *gpio; uint32_t pin; }; static const struct pin_index pins[] = { #if (STM32L476_PIN_NUMBERS == 48) __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(2, C, 13), __STM32_PIN(3, C, 14), __STM32_PIN(4, C, 15), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(10, A, 0), __STM32_PIN(11, A, 1), __STM32_PIN(12, A, 2), __STM32_PIN(13, A, 3), __STM32_PIN(14, A, 4), __STM32_PIN(15, A, 5), __STM32_PIN(16, A, 6), __STM32_PIN(17, A, 7), __STM32_PIN(18, B, 0), __STM32_PIN(19, B, 1), __STM32_PIN(20, B, 2), __STM32_PIN(21, B, 10), __STM32_PIN(22, B, 11), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(25, B, 12), __STM32_PIN(26, B, 13), __STM32_PIN(27, B, 14), __STM32_PIN(28, B, 15), __STM32_PIN(29, A, 8), __STM32_PIN(30, A, 9), __STM32_PIN(31, A, 10), __STM32_PIN(32, A, 11), __STM32_PIN(33, A, 12), __STM32_PIN(34, A, 13), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(37, A, 14), __STM32_PIN(38, A, 15), __STM32_PIN(39, B, 3), __STM32_PIN(40, B, 4), __STM32_PIN(41, B, 5), __STM32_PIN(42, B, 6), __STM32_PIN(43, B, 7), __STM32_PIN_DEFAULT, __STM32_PIN(45, B, 8), __STM32_PIN(46, B, 9), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, #endif #if (STM32L476_PIN_NUMBERS == 64) __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(2, C, 13), __STM32_PIN(3, C, 14), __STM32_PIN(4, C, 15), __STM32_PIN(5, D, 0), __STM32_PIN(6, D, 1), __STM32_PIN_DEFAULT, __STM32_PIN(8, C, 0), __STM32_PIN(9, C, 1), __STM32_PIN(10, C, 2), __STM32_PIN(11, C, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(14, A, 0), __STM32_PIN(15, A, 1), __STM32_PIN(16, A, 2), __STM32_PIN(17, A, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(20, A, 4), __STM32_PIN(21, A, 5), __STM32_PIN(22, A, 6), __STM32_PIN(23, A, 7), __STM32_PIN(24, C, 4), __STM32_PIN(25, C, 5), __STM32_PIN(26, B, 0), __STM32_PIN(27, B, 1), __STM32_PIN(28, B, 2), __STM32_PIN(29, B, 10), __STM32_PIN(30, B, 11), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(33, B, 12), __STM32_PIN(34, B, 13), __STM32_PIN(35, B, 14), __STM32_PIN(36, B, 15), __STM32_PIN(37, C, 6), __STM32_PIN(38, C, 7), __STM32_PIN(39, C, 8), __STM32_PIN(40, C, 9), __STM32_PIN(41, A, 8), __STM32_PIN(42, A, 9), __STM32_PIN(43, A, 10), __STM32_PIN(44, A, 11), __STM32_PIN(45, A, 12), __STM32_PIN(46, A, 13), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(49, A, 14), __STM32_PIN(50, A, 15), __STM32_PIN(51, C, 10), __STM32_PIN(52, C, 11), __STM32_PIN(53, C, 12), __STM32_PIN(54, D, 2), __STM32_PIN(55, B, 3), __STM32_PIN(56, B, 4), __STM32_PIN(57, B, 5), __STM32_PIN(58, B, 6), __STM32_PIN(59, B, 7), __STM32_PIN_DEFAULT, __STM32_PIN(61, B, 8), __STM32_PIN(62, B, 9), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, #endif #if (STM32L476_PIN_NUMBERS == 100) __STM32_PIN_DEFAULT, __STM32_PIN(1, E, 2), __STM32_PIN(2, E, 3), __STM32_PIN(3, E, 4), __STM32_PIN(4, E, 5), __STM32_PIN(5, E, 6), __STM32_PIN_DEFAULT, __STM32_PIN(7, C, 13), __STM32_PIN(8, C, 14), __STM32_PIN(9, C, 15), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(15, C, 0), __STM32_PIN(16, C, 1), __STM32_PIN(17, C, 2), __STM32_PIN(18, C, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(23, A, 0), __STM32_PIN(24, A, 1), __STM32_PIN(25, A, 2), __STM32_PIN(26, A, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(29, A, 4), __STM32_PIN(30, A, 5), __STM32_PIN(31, A, 6), __STM32_PIN(32, A, 7), __STM32_PIN(33, C, 4), __STM32_PIN(34, C, 5), __STM32_PIN(35, B, 0), __STM32_PIN(36, B, 1), __STM32_PIN(37, B, 2), __STM32_PIN(38, E, 7), __STM32_PIN(39, E, 8), __STM32_PIN(40, E, 9), __STM32_PIN(41, E, 10), __STM32_PIN(42, E, 11), __STM32_PIN(43, E, 12), __STM32_PIN(44, E, 13), __STM32_PIN(45, E, 14), __STM32_PIN(46, E, 15), __STM32_PIN(47, B, 10), __STM32_PIN(48, B, 11), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(51, B, 12), __STM32_PIN(52, B, 13), __STM32_PIN(53, B, 14), __STM32_PIN(54, B, 15), __STM32_PIN(55, D, 8), __STM32_PIN(56, D, 9), __STM32_PIN(57, D, 10), __STM32_PIN(58, D, 11), __STM32_PIN(59, D, 12), __STM32_PIN(60, D, 13), __STM32_PIN(61, D, 14), __STM32_PIN(62, D, 15), __STM32_PIN(63, C, 6), __STM32_PIN(64, C, 7), __STM32_PIN(65, C, 8), __STM32_PIN(66, C, 9), __STM32_PIN(67, A, 8), __STM32_PIN(68, A, 9), __STM32_PIN(69, A, 10), __STM32_PIN(70, A, 11), __STM32_PIN(71, A, 12), __STM32_PIN(72, A, 13), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(76, A, 14), __STM32_PIN(77, A, 15), __STM32_PIN(78, C, 10), __STM32_PIN(79, C, 11), __STM32_PIN(80, C, 12), __STM32_PIN(81, D, 0), __STM32_PIN(82, D, 1), __STM32_PIN(83, D, 2), __STM32_PIN(84, D, 3), __STM32_PIN(85, D, 4), __STM32_PIN(86, D, 5), __STM32_PIN(87, D, 6), __STM32_PIN(88, D, 7), __STM32_PIN(89, B, 3), __STM32_PIN(90, B, 4), __STM32_PIN(91, B, 5), __STM32_PIN(92, B, 6), __STM32_PIN(93, B, 7), __STM32_PIN_DEFAULT, __STM32_PIN(95, B, 8), __STM32_PIN(96, B, 9), __STM32_PIN(97, E, 0), __STM32_PIN(98, E, 1), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, #endif #if (STM32L476_PIN_NUMBERS == 144) __STM32_PIN_DEFAULT, __STM32_PIN(1, E, 2), __STM32_PIN(2, E, 3), __STM32_PIN(3, E, 4), __STM32_PIN(4, E, 5), __STM32_PIN(5, E, 6), __STM32_PIN_DEFAULT, __STM32_PIN(7, C, 13), __STM32_PIN(8, C, 14), __STM32_PIN(9, C, 15), __STM32_PIN(10, F, 0), __STM32_PIN(11, F, 1), __STM32_PIN(12, F, 2), __STM32_PIN(13, F, 3), __STM32_PIN(14, F, 4), __STM32_PIN(15, F, 5), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(18, F, 6), __STM32_PIN(19, F, 7), __STM32_PIN(20, F, 8), __STM32_PIN(21, F, 9), __STM32_PIN(22, F, 10), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(26, C, 0), __STM32_PIN(27, C, 1), __STM32_PIN(28, C, 2), __STM32_PIN(29, C, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(34, A, 0), __STM32_PIN(35, A, 1), __STM32_PIN(36, A, 2), __STM32_PIN(37, A, 3), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(40, A, 4), __STM32_PIN(41, A, 5), __STM32_PIN(42, A, 6), __STM32_PIN(43, A, 7), __STM32_PIN(44, C, 4), __STM32_PIN(45, C, 5), __STM32_PIN(46, B, 0), __STM32_PIN(47, B, 1), __STM32_PIN(48, B, 2), __STM32_PIN(49, F, 11), __STM32_PIN(50, F, 12), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(53, F, 13), __STM32_PIN(54, F, 14), __STM32_PIN(55, F, 15), __STM32_PIN(56, G, 0), __STM32_PIN(57, G, 1), __STM32_PIN(58, E, 7), __STM32_PIN(59, E, 8), __STM32_PIN(60, E, 9), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(63, E, 10), __STM32_PIN(64, E, 11), __STM32_PIN(65, E, 12), __STM32_PIN(66, E, 13), __STM32_PIN(67, E, 14), __STM32_PIN(68, E, 15), __STM32_PIN(69, B, 10), __STM32_PIN(70, B, 11), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(73, B, 12), __STM32_PIN(74, B, 13), __STM32_PIN(75, B, 14), __STM32_PIN(76, B, 15), __STM32_PIN(77, D, 8), __STM32_PIN(78, D, 9), __STM32_PIN(79, D, 10), __STM32_PIN(80, D, 11), __STM32_PIN(81, D, 12), __STM32_PIN(82, D, 13), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(85, D, 14), __STM32_PIN(86, D, 15), __STM32_PIN(87, G, 2), __STM32_PIN(88, G, 3), __STM32_PIN(89, G, 4), __STM32_PIN(90, G, 5), __STM32_PIN(91, G, 6), __STM32_PIN(92, G, 7), __STM32_PIN(93, G, 8), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(96, C, 6), __STM32_PIN(97, C, 7), __STM32_PIN(98, C, 8), __STM32_PIN(99, C, 9), __STM32_PIN(100, A, 8), __STM32_PIN(101, A, 9), __STM32_PIN(102, A, 10), __STM32_PIN(103, A, 11), __STM32_PIN(104, A, 12), __STM32_PIN(105, A, 13), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(109, A, 14), __STM32_PIN(110, A, 15), __STM32_PIN(111, C, 10), __STM32_PIN(112, C, 11), __STM32_PIN(113, C, 12), __STM32_PIN(114, D, 0), __STM32_PIN(115, D, 1), __STM32_PIN(116, D, 2), __STM32_PIN(117, D, 3), __STM32_PIN(118, D, 4), __STM32_PIN(119, D, 5), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(122, D, 6), __STM32_PIN(123, D, 7), __STM32_PIN(124, G, 9), __STM32_PIN(125, G, 10), __STM32_PIN(126, G, 11), __STM32_PIN(127, G, 12), __STM32_PIN(128, G, 13), __STM32_PIN(129, G, 14), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, __STM32_PIN(132, G, 15), __STM32_PIN(133, B, 3), __STM32_PIN(134, B, 4), __STM32_PIN(135, B, 5), __STM32_PIN(136, B, 6), __STM32_PIN(137, B, 7), __STM32_PIN_DEFAULT, __STM32_PIN(139, B, 8), __STM32_PIN(140, B, 9), __STM32_PIN(141, E, 0), __STM32_PIN(142, E, 1), __STM32_PIN_DEFAULT, __STM32_PIN_DEFAULT, #endif }; struct pin_irq_map { rt_uint16_t pinbit; IRQn_Type irqno; }; static const struct pin_irq_map pin_irq_map[] = { {GPIO_PIN_0, EXTI0_IRQn}, {GPIO_PIN_1, EXTI1_IRQn}, {GPIO_PIN_2, EXTI2_IRQn}, {GPIO_PIN_3, EXTI3_IRQn}, {GPIO_PIN_4, EXTI4_IRQn}, {GPIO_PIN_5, EXTI9_5_IRQn}, {GPIO_PIN_6, EXTI9_5_IRQn}, {GPIO_PIN_7, EXTI9_5_IRQn}, {GPIO_PIN_8, EXTI9_5_IRQn}, {GPIO_PIN_9, EXTI9_5_IRQn}, {GPIO_PIN_10, EXTI15_10_IRQn}, {GPIO_PIN_11, EXTI15_10_IRQn}, {GPIO_PIN_12, EXTI15_10_IRQn}, {GPIO_PIN_13, EXTI15_10_IRQn}, {GPIO_PIN_14, EXTI15_10_IRQn}, {GPIO_PIN_15, EXTI15_10_IRQn}, }; struct rt_pin_irq_hdr pin_irq_hdr_tab[] = { {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, {-1, 0, RT_NULL, RT_NULL}, }; #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; } HAL_GPIO_WritePin(index->gpio, index->pin, (GPIO_PinState)value); } 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; } value = HAL_GPIO_ReadPin(index->gpio, index->pin); 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_InitStruct; index = get_pin(pin); if (index == RT_NULL) { return; } /* GPIO Periph clock enable */ index->rcc(); /* Configure GPIO_InitStructure */ GPIO_InitStruct.Pin = index->pin; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; if (mode == PIN_MODE_OUTPUT) { /* output setting */ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; } else if (mode == PIN_MODE_INPUT) { /* input setting: not pull. */ GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; } else if (mode == PIN_MODE_INPUT_PULLUP) { /* input setting: pull up. */ GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_PULLUP; } else if (mode == PIN_MODE_INPUT_PULLDOWN) { /* input setting: pull down. */ GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_PULLDOWN; } else if (mode == PIN_MODE_OUTPUT_OD) { /* output setting: od. */ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD; GPIO_InitStruct.Pull = GPIO_NOPULL; } HAL_GPIO_Init(index->gpio, &GPIO_InitStruct); } rt_inline rt_int32_t bit2bitno(rt_uint32_t bit) { int i; for (i = 0; i < 32; i++) { if ((0x01 << i) == bit) { return i; } } return -1; } rt_inline const struct pin_irq_map *get_pin_irq_map(uint32_t pinbit) { rt_int32_t mapindex = bit2bitno(pinbit); if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map)) { return RT_NULL; } return &pin_irq_map[mapindex]; }; rt_err_t stm32_pin_attach_irq(struct rt_device *device, rt_int32_t pin, rt_uint32_t mode, void (*hdr)(void *args), void *args) { const struct pin_index *index; rt_base_t level; rt_int32_t irqindex = -1; index = get_pin(pin); if (index == RT_NULL) { return RT_ENOSYS; } irqindex = bit2bitno(index->pin); if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map)) { return RT_ENOSYS; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[irqindex].pin == pin && pin_irq_hdr_tab[irqindex].hdr == hdr && pin_irq_hdr_tab[irqindex].mode == mode && pin_irq_hdr_tab[irqindex].args == args) { rt_hw_interrupt_enable(level); return RT_EOK; } if (pin_irq_hdr_tab[irqindex].pin != -1) { rt_hw_interrupt_enable(level); return RT_EBUSY; } pin_irq_hdr_tab[irqindex].pin = pin; pin_irq_hdr_tab[irqindex].hdr = hdr; pin_irq_hdr_tab[irqindex].mode = mode; pin_irq_hdr_tab[irqindex].args = args; rt_hw_interrupt_enable(level); return RT_EOK; } rt_err_t stm32_pin_dettach_irq(struct rt_device *device, rt_int32_t pin) { const struct pin_index *index; rt_base_t level; rt_int32_t irqindex = -1; index = get_pin(pin); if (index == RT_NULL) { return RT_ENOSYS; } irqindex = bit2bitno(index->pin); if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map)) { return RT_ENOSYS; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[irqindex].pin == -1) { rt_hw_interrupt_enable(level); return RT_EOK; } pin_irq_hdr_tab[irqindex].pin = -1; pin_irq_hdr_tab[irqindex].hdr = RT_NULL; pin_irq_hdr_tab[irqindex].mode = 0; pin_irq_hdr_tab[irqindex].args = RT_NULL; rt_hw_interrupt_enable(level); return RT_EOK; } rt_err_t stm32_pin_irq_enable(struct rt_device *device, rt_base_t pin, rt_uint32_t enabled) { const struct pin_index *index; const struct pin_irq_map *irqmap; rt_base_t level; rt_int32_t irqindex = -1; GPIO_InitTypeDef GPIO_InitStruct; index = get_pin(pin); if (index == RT_NULL) { return RT_ENOSYS; } if (enabled == PIN_IRQ_ENABLE) { irqindex = bit2bitno(index->pin); if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map)) { return RT_ENOSYS; } level = rt_hw_interrupt_disable(); if (pin_irq_hdr_tab[irqindex].pin == -1) { rt_hw_interrupt_enable(level); return RT_ENOSYS; } irqmap = &pin_irq_map[irqindex]; /* GPIO Periph clock enable */ index->rcc(); /* Configure GPIO_InitStructure */ GPIO_InitStruct.Pin = index->pin; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; switch (pin_irq_hdr_tab[irqindex].mode) { case PIN_IRQ_MODE_RISING: GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; break; case PIN_IRQ_MODE_FALLING: GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING; break; case PIN_IRQ_MODE_RISING_FALLING: GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING; break; } HAL_GPIO_Init(index->gpio, &GPIO_InitStruct); HAL_NVIC_SetPriority(irqmap->irqno, 5, 0); HAL_NVIC_EnableIRQ(irqmap->irqno); rt_hw_interrupt_enable(level); } else if (enabled == PIN_IRQ_DISABLE) { irqmap = get_pin_irq_map(index->pin); if (irqmap == RT_NULL) { return RT_ENOSYS; } HAL_NVIC_DisableIRQ(irqmap->irqno); } else { return RT_ENOSYS; } return RT_EOK; } const static struct rt_pin_ops _stm32_pin_ops = { stm32_pin_mode, stm32_pin_write, stm32_pin_read, stm32_pin_attach_irq, stm32_pin_dettach_irq, stm32_pin_irq_enable, }; int rt_hw_pin_init(void) { int result; result = rt_device_pin_register("pin", &_stm32_pin_ops, RT_NULL); return result; } INIT_BOARD_EXPORT(rt_hw_pin_init); rt_inline void pin_irq_hdr(int irqno) { if (pin_irq_hdr_tab[irqno].hdr) { pin_irq_hdr_tab[irqno].hdr(pin_irq_hdr_tab[irqno].args); } } void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) { pin_irq_hdr(bit2bitno(GPIO_Pin)); } void EXTI0_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0); rt_interrupt_leave(); } void EXTI1_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1); rt_interrupt_leave(); } void EXTI2_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2); rt_interrupt_leave(); } void EXTI3_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_3); rt_interrupt_leave(); } void EXTI4_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4); rt_interrupt_leave(); } void EXTI9_5_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_5); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_6); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_7); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_8); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_9); rt_interrupt_leave(); } void EXTI15_10_IRQHandler(void) { rt_interrupt_enter(); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_10); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_11); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_12); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_13); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_14); HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_15); rt_interrupt_leave(); } #endif