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rt-thread-official/bsp/fm33lc026/libraries/HAL_Drivers/drv_gpio.c

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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-7-20 wudiyidashi first version
*/
#include <board.h>
#include "drv_gpio.h"
#ifdef RT_USING_PIN
#define PIN_NUM(port, no) (((((port)&0xFu) << 4) | ((no)&0xFu)))
#define PIN_PORT(pin) ((uint8_t)(((pin) >> 4) & 0xFu))
#define PIN_NO(pin) ((uint8_t)((pin)&0xFu))
#define PIN_STPORT(pin) ((GPIO_Type *)(GPIOA_BASE + (0x40u * PIN_PORT(pin))))
#define PIN_STPIN(pin) ((uint16_t)(1u << PIN_NO(pin)))
#define PIN_STPORT_MAX 4u
/*
--GPIO-- | EXTI INPUT | --EXTI--
PA0~PA3 | EXTI_ASEL[1:0] | EXTI[0]
PA4~PA7 | EXTI_ASEL[3:2] | EXTI[1]
PA8~PA11 | EXTI_ASEL[5:4] | EXTI[2]
PA12~PA15| EXTI_ASEL[7:6] | EXTI[3]
PB0~PB3 | EXTI_BSEL[1:0] | EXTI[4]
PB4~PB7 | EXTI_BSEL[3:2] | EXTI[5]
PB8~PB11 | EXTI_BSEL[5:4] | EXTI[6]
PB12~PB15 | EXTI_BSEL[7:6] | EXTI[7]
PC0~PC3 | EXTI_CSEL[1:0] | EXTI[8]
PC4~PC7 | EXTI_CSEL[3:2] | EXTI[9]
PC8~PC11 | EXTI_CSEL[5:4] | EXTI[10]
PC12 | - | EXTI[11]
PD0~PD3 | EXTI_DSEL[1:0] | EXTI[12]
PD4~PD7 | EXTI_DSEL[3:2] | EXTI[13]
PD8~PD11 | EXTI_DSEL[5:4] | EXTI[14]
PD12 | - | EXTI[15]
{PIN_NUM(PA3),FL_GPIO_EXTI_LINE_0}
{PIN_NUM(PA7),FL_GPIO_EXTI_LINE_0}
...
{PIN_NUM(PD12),FL_GPIO_EXTI_LINE_0}
*/
static const struct pin_irq_map pin_irq_map[] =
{
{3, FL_GPIO_EXTI_LINE_0},
{7, FL_GPIO_EXTI_LINE_1},
{11, FL_GPIO_EXTI_LINE_2},
{15, FL_GPIO_EXTI_LINE_3},
{19, FL_GPIO_EXTI_LINE_4},
{23, FL_GPIO_EXTI_LINE_5},
{27, FL_GPIO_EXTI_LINE_6},
{31, FL_GPIO_EXTI_LINE_7},
{35, FL_GPIO_EXTI_LINE_8},
{39, FL_GPIO_EXTI_LINE_9},
{43, FL_GPIO_EXTI_LINE_10},
{44, FL_GPIO_EXTI_LINE_11},
{51, FL_GPIO_EXTI_LINE_12},
{55, FL_GPIO_EXTI_LINE_13},
{59, FL_GPIO_EXTI_LINE_14},
{60, FL_GPIO_EXTI_LINE_15},
};
static 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},
};
static uint32_t pin_irq_enable_mask = 0;
#define ITEM_NUM(items) sizeof(items) / sizeof(items[0])
static rt_base_t fm33_pin_get(const char *name)
{
rt_base_t pin = 0;
int hw_port_num, hw_pin_num = 0;
int i, name_len;
name_len = rt_strlen(name);
if ((name_len < 4) || (name_len >= 6))
{
return -RT_EINVAL;
}
if ((name[0] != 'P') || (name[2] != '.'))
{
return -RT_EINVAL;
}
if ((name[1] >= 'A') && (name[1] <= 'Z'))
{
hw_port_num = (int)(name[1] - 'A');
}
else
{
return -RT_EINVAL;
}
for (i = 3; i < name_len; i++)
{
hw_pin_num *= 10;
hw_pin_num += name[i] - '0';
}
pin = PIN_NUM(hw_port_num, hw_pin_num);
return pin;
}
static void fm33_pin_write(rt_device_t dev, rt_base_t pin, rt_uint8_t value)
{
GPIO_Type *gpio_port;
uint16_t gpio_pin;
if (PIN_PORT(pin) < PIN_STPORT_MAX)
{
gpio_port = PIN_STPORT(pin);
gpio_pin = PIN_STPIN(pin);
if (value == PIN_LOW)
{
FL_GPIO_ResetOutputPin(gpio_port, gpio_pin);
}
else
{
FL_GPIO_SetOutputPin(gpio_port, gpio_pin);
}
}
}
static rt_ssize_t fm33_pin_read(rt_device_t dev, rt_base_t pin)
{
GPIO_Type *gpio_port;
uint16_t gpio_pin;
rt_ssize_t value = PIN_LOW;
if (PIN_PORT(pin) < PIN_STPORT_MAX)
{
gpio_port = PIN_STPORT(pin);
gpio_pin = PIN_STPIN(pin);
value = FL_GPIO_GetInputPin(gpio_port, gpio_pin);
}
else
{
value = -RT_EINVAL;
}
return value;
}
static void fm33_pin_mode(rt_device_t dev, rt_base_t pin, rt_uint8_t mode)
{
FL_GPIO_InitTypeDef GPIO_InitStruct;
if (PIN_PORT(pin) >= PIN_STPORT_MAX)
{
return;
}
/* Configure GPIO_InitStructure */
GPIO_InitStruct.pin = PIN_STPIN(pin);
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_DISABLE;
GPIO_InitStruct.remapPin = FL_DISABLE;
if (mode == PIN_MODE_OUTPUT)
{
/* output setting */
GPIO_InitStruct.mode = FL_GPIO_MODE_OUTPUT;
GPIO_InitStruct.pull = FL_DISABLE;
}
else if (mode == PIN_MODE_INPUT)
{
/* input setting: not pull. */
GPIO_InitStruct.mode = FL_GPIO_MODE_INPUT;
GPIO_InitStruct.pull = FL_DISABLE;
}
else if (mode == PIN_MODE_INPUT_PULLUP)
{
/* input setting: pull up. */
GPIO_InitStruct.mode = FL_GPIO_MODE_INPUT;
GPIO_InitStruct.pull = FL_ENABLE;
}
else if (mode == PIN_MODE_INPUT_PULLDOWN)
{
/* input setting: pull down. */
GPIO_InitStruct.mode = FL_GPIO_MODE_INPUT;
GPIO_InitStruct.pull = FL_DISABLE;
}
else if (mode == PIN_MODE_OUTPUT_OD)
{
/* output setting: od. */
GPIO_InitStruct.mode = FL_GPIO_OUTPUT_OPENDRAIN;
GPIO_InitStruct.pull = FL_DISABLE;
}
FL_GPIO_Init(PIN_STPORT(pin), &GPIO_InitStruct);
}
rt_inline rt_int32_t pin2irqindex(rt_uint32_t pin)
{
rt_uint8_t irqindex;
for (irqindex = 4 * PIN_PORT(pin); irqindex <= ITEM_NUM(pin_irq_map); irqindex++)
{
if (pin_irq_map[irqindex].pin >= pin && pin_irq_map[irqindex - 1].pin < pin)
{
return irqindex;
}
}
return -1;
}
rt_inline const struct pin_irq_map *get_pin_irq_map(rt_base_t pin)
{
rt_int32_t mapindex;
mapindex = pin2irqindex(pin);
if (mapindex < 0 || mapindex >= ITEM_NUM(pin_irq_map))
{
return RT_NULL;
}
return &pin_irq_map[mapindex];
};
static rt_err_t fm33_pin_attach_irq(struct rt_device *device, rt_base_t pin,
rt_uint8_t mode, void (*hdr)(void *args), void *args)
{
rt_base_t level;
rt_int32_t irqindex = -1;
if (PIN_PORT(pin) >= PIN_STPORT_MAX)
{
return -RT_ENOSYS;
}
irqindex = pin2irqindex(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;
}
static rt_err_t fm33_pin_dettach_irq(struct rt_device *device, rt_base_t pin)
{
rt_base_t level;
rt_int32_t irqindex = -1;
if (PIN_PORT(pin) >= PIN_STPORT_MAX)
{
return -RT_ENOSYS;
}
irqindex = pin2irqindex(PIN_STPIN(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;
}
static rt_err_t fm33_pin_irq_enable(struct rt_device *device, rt_base_t pin,
rt_uint8_t enabled)
{
const struct pin_irq_map *irqmap;
rt_base_t level;
rt_int8_t irqindex = 0;
FL_GPIO_InitTypeDef GPIO_InitStruct;
FL_EXTI_InitTypeDef extiInitStruct = {0};
FL_EXTI_CommonInitTypeDef extiCommonInitStruct = {0};
FL_RCC_EnableEXTIOnSleep();
extiCommonInitStruct.clockSource = FL_RCC_EXTI_CLK_SOURCE_HCLK;
FL_EXTI_CommonInit(&extiCommonInitStruct);
if (PIN_PORT(pin) >= PIN_STPORT_MAX)
{
return -RT_ENOSYS;
}
if (enabled == PIN_IRQ_ENABLE)
{
if (irqindex < 0 || irqindex >= ITEM_NUM(pin_irq_map))
{
return -RT_ENOSYS;
}
irqindex = pin2irqindex(pin);
irqmap = &pin_irq_map[irqindex];
level = rt_hw_interrupt_disable();
if (pin_irq_hdr_tab[irqindex].pin == -1)
{
rt_hw_interrupt_enable(level);
return -RT_ENOSYS;
}
/* Configure GPIO_InitStructure */
GPIO_InitStruct.pin = PIN_STPIN(pin);
GPIO_InitStruct.mode = FL_GPIO_MODE_INPUT;
GPIO_InitStruct.outputType = FL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.pull = FL_DISABLE;
GPIO_InitStruct.remapPin = FL_DISABLE;
extiInitStruct.input = pin - pin_irq_map[irqindex - 1].pin - 1;
extiInitStruct.filter = FL_ENABLE;
switch (pin_irq_hdr_tab[irqindex].mode)
{
case PIN_IRQ_MODE_RISING:
extiInitStruct.triggerEdge = FL_GPIO_EXTI_TRIGGER_EDGE_RISING;
break;
case PIN_IRQ_MODE_FALLING:
extiInitStruct.triggerEdge = FL_GPIO_EXTI_TRIGGER_EDGE_FALLING;
break;
case PIN_IRQ_MODE_RISING_FALLING:
extiInitStruct.triggerEdge = FL_GPIO_EXTI_TRIGGER_EDGE_BOTH;
break;
}
FL_GPIO_Init(PIN_STPORT(pin), &GPIO_InitStruct);
FL_EXTI_Init(irqmap->irqno, &extiInitStruct);
NVIC_DisableIRQ(GPIO_IRQn);
NVIC_SetPriority(GPIO_IRQn, 2);
NVIC_EnableIRQ(GPIO_IRQn);
pin_irq_enable_mask |= irqmap->irqno;
rt_hw_interrupt_enable(level);
}
else if (enabled == PIN_IRQ_DISABLE)
{
irqmap = get_pin_irq_map(PIN_STPIN(pin));
if (irqmap == RT_NULL)
{
return -RT_ENOSYS;
}
level = rt_hw_interrupt_disable();
FL_GPIO_DeInit(PIN_STPORT(pin), PIN_STPIN(pin));
pin_irq_enable_mask &= ~irqmap->irqno;
NVIC_DisableIRQ(GPIO_IRQn);
rt_hw_interrupt_enable(level);
}
else
{
return -RT_ENOSYS;
}
return RT_EOK;
}
const static struct rt_pin_ops _fm33_pin_ops =
{
fm33_pin_mode,
fm33_pin_write,
fm33_pin_read,
fm33_pin_attach_irq,
fm33_pin_dettach_irq,
fm33_pin_irq_enable,
fm33_pin_get,
};
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 GPIO_IRQHandler(void)
{
rt_interrupt_enter();
for (uint8_t extinum = 0; extinum < 16; ++extinum)
{
if (FL_GPIO_IsActiveFlag_EXTI(GPIO, 0x1U << extinum))
{
FL_GPIO_ClearFlag_EXTI(GPIO, 0x1U << extinum);
pin_irq_hdr(extinum);
}
}
rt_interrupt_leave();
}
int rt_hw_pin_init(void)
{
return rt_device_pin_register("pin", &_fm33_pin_ops, RT_NULL);
}
#endif /* RT_USING_PIN */
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