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rt-thread/bsp/stm32l476-nucleo/drivers/drv_gpio.c

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/*
* File : drv_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 <rthw.h>
#include <rtdevice.h>
#include <board.h>
#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_detach_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_detach_irq,
stm32_pin_irq_enable,
};
int bsp_hw_pin_init(void)
{
int result;
result = rt_device_pin_register("pin", &_stm32_pin_ops, RT_NULL);
return result;
}
INIT_BOARD_EXPORT(bsp_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
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