91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/**
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******************************************************************************
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* @file bsp_exti.c
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* @author fire
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* @version V1.0
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* @date 2017-xx-xx
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* @brief I/O线中断应用bsp
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******************************************************************************
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* @attention
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*
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* 实验平台:野火 STM32H743 开发板
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* 论坛 :http://www.firebbs.cn
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* 淘宝 :http://firestm32.taobao.com
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*
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******************************************************************************
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*/
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#include "./key/bsp_exti.h"
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#include "./led/bsp_led.h"
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#include "./usart/bsp_usart.h"
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/**
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* @brief 配置嵌套向量中断控制器NVIC
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* @param 无
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* @retval 无
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*/
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static void NVIC_Configuration(void)
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{
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/* 配置NVIC为优先级组1 */
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HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_1);
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/*按键1中断设置，抢占优先级0，子优先级为0*/
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HAL_NVIC_SetPriority(KEY1_INT_EXTI_IRQ, 1 ,1);
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HAL_NVIC_EnableIRQ(KEY1_INT_EXTI_IRQ);
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/*按键2中断设置，抢占优先级0，子优先级为0*/
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HAL_NVIC_SetPriority(KEY2_INT_EXTI_IRQ, 1 ,1);
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HAL_NVIC_EnableIRQ(KEY2_INT_EXTI_IRQ);
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}
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/**
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* @brief 配置 KEY1和KEY2为中断，并设置中断优先级
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* @param 无
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* @retval 无
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*/
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void EXTI_Key_Config(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/*开启按键GPIO口的时钟*/
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KEY1_INT_GPIO_CLK_ENABLE();
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KEY2_INT_GPIO_CLK_ENABLE();
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/* 配置 NVIC */
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NVIC_Configuration();
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/*选择按键的引脚*/
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GPIO_InitStructure.Pin = KEY1_INT_GPIO_PIN;
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/*设置引脚为上升沿中断模式*/
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GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
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/*设置引脚不上拉也不下拉*/
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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/*使用上面的结构体初始化按键*/
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HAL_GPIO_Init(KEY1_INT_GPIO_PORT, &GPIO_InitStructure);
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HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PA0, SYSCFG_SWITCH_PA0_CLOSE);
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/*选择按键2的引脚*/
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GPIO_InitStructure.Pin = KEY2_INT_GPIO_PIN;
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/*设置引脚为上升沿中断模式*/
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GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
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/*设置引脚不上拉也不下拉*/
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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/*使用上面的结构体初始化按键*/
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HAL_GPIO_Init(KEY2_INT_GPIO_PORT, &GPIO_InitStructure);
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}
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/**
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* @brief EXTI line detection callbacks.
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* @param GPIO_Pin: Specifies the pins connected EXTI line
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* @retval None
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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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LED_BLUE;
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if(GPIO_Pin==KEY1_INT_GPIO_PIN)
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printf("\r\n KEY1 按键中断唤醒 \r\n");
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else if(GPIO_Pin==KEY2_INT_GPIO_PIN)
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printf("\r\n KEY2 按键中断唤醒 \r\n");
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else
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{}
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}
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/*********************************************END OF FILE**********************/
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