67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
#include "bsp_gpio.h"
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#include "memory.h"
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#include "stdlib.h"
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static uint8_t idx;
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static GPIOInstance *gpio_instance[GPIO_MX_DEVICE_NUM] = {NULL};
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/**
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* @brief EXTI中断回调函数,根据GPIO_Pin找到对应的GPIOInstance,并调用模块回调函数(如果有)
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* @note 如何判断具体是哪一个GPIO的引脚连接到这个EXTI中断线上?
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* 一个EXTI中断线只能连接一个GPIO引脚,因此可以通过GPIO_Pin来判断,PinX对应EXTIX
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* 一个Pin号只会对应一个EXTI,详情见gpio.md
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* @param GPIO_Pin 发生中断的GPIO_Pin
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*/
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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// 如有必要,可以根据pinstate和HAL_GPIO_ReadPin来判断是上升沿还是下降沿/rise&fall等
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GPIOInstance *gpio;
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for (size_t i = 0; i < idx; i++)
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{
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gpio = gpio_instance[i];
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if (gpio->GPIO_Pin == GPIO_Pin && gpio->gpio_model_callback != NULL)
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{
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gpio->gpio_model_callback(gpio);
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return;
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}
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}
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}
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GPIOInstance *GPIORegister(GPIO_Init_Config_s *GPIO_config)
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{
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GPIOInstance *ins = (GPIOInstance *)malloc(sizeof(GPIOInstance));
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memset(ins, 0, sizeof(GPIOInstance));
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ins->GPIOx = GPIO_config->GPIOx;
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ins->GPIO_Pin = GPIO_config->GPIO_Pin;
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ins->pin_state = GPIO_config->pin_state;
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ins->exti_mode = GPIO_config->exti_mode;
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ins->id = GPIO_config->id;
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ins->gpio_model_callback = GPIO_config->gpio_model_callback;
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gpio_instance[idx++] = ins;
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return ins;
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}
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// ----------------- GPIO API -----------------
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// 都是对HAL的形式上的封装,后续考虑增加GPIO state变量,可以直接读取state
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void GPIOToggel(GPIOInstance *_instance)
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{
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HAL_GPIO_TogglePin(_instance->GPIOx, _instance->GPIO_Pin);
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}
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void GPIOSet(GPIOInstance *_instance)
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{
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HAL_GPIO_WritePin(_instance->GPIOx, _instance->GPIO_Pin, GPIO_PIN_SET);
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}
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void GPIOReset(GPIOInstance *_instance)
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{
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HAL_GPIO_WritePin(_instance->GPIOx, _instance->GPIO_Pin, GPIO_PIN_RESET);
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}
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GPIO_PinState GPIORead(GPIOInstance *_instance)
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{
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return HAL_GPIO_ReadPin(_instance->GPIOx, _instance->GPIO_Pin);
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}
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