145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
/************************************************************************************************/
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/**
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* @file ciu32l051_std_exti.c
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* @author MCU Ecosystem Development Team
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* @brief EXTI STD库驱动
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* 实现了EXTI模块的信号线初始化、去初始化等API。
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*
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*
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**************************************************************************************************
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* @attention
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* Copyright (c) CEC Huada Electronic Design Co.,Ltd. All rights reserved.
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*
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**************************************************************************************************
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*/
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/************************************************************************************************/
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/**
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* @addtogroup CIU32L051_STD_Driver
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* @{
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*/
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/**
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* @addtogroup EXTI
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* @{
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*
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*/
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/************************************************************************************************/
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/*------------------------------------------includes--------------------------------------------*/
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#include "ciu32l051_std.h"
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#ifdef STD_EXTI_PERIPHERAL_USED
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/*-------------------------------------------functions------------------------------------------*/
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/************************************************************************************************/
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/**
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* @addtogroup EXTI_External_Functions
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* @{
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*
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*/
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/************************************************************************************************/
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/**
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* @brief EXTI初始化
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* @param exti_init_param EXTI初始化参数结构体
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* @retval 无
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*/
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void std_exti_init(std_exti_init_t* exti_init_param)
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{
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uint32_t trigger;
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uint32_t exti_mode;
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/* 配置GPIO EXTI通道 */
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if ((exti_init_param->line_id & EXTI_GPIO) != 0x00U)
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{
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trigger = exti_init_param->trigger & EXTI_TRIGGER_MASK;
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/* 禁止EXTI通道上升沿/下降沿触发 */
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std_exti_falling_trigger_disable(exti_init_param->line_id);
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std_exti_rising_trigger_disable (exti_init_param->line_id);
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/* 使能EXTI通道上升沿触发 */
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if ((trigger & EXTI_TRIGGER_RISING) == EXTI_TRIGGER_RISING)
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{
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std_exti_rising_trigger_enable (exti_init_param->line_id);
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}
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/* 使能EXTI通道下降沿触发 */
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if ((trigger & EXTI_TRIGGER_FALLING) == EXTI_TRIGGER_FALLING)
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{
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std_exti_falling_trigger_enable(exti_init_param->line_id);
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}
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/* 设置EXTI通道所对应GPIO端口 */
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if ((exti_init_param->line_id & EXTI_GPIO) == EXTI_GPIO)
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{
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std_exti_set_gpio(exti_init_param->gpio_id, exti_init_param->line_id);
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}
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}
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/* 配置EXTI通道中断/事件唤醒 */
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exti_mode = exti_init_param->mode & EXTI_MODE_INTERRUPT_EVENT;
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/* 禁止EXTI通道中断/事件唤醒 */
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std_exti_interrupt_disable(exti_init_param->line_id);
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std_exti_event_disable(exti_init_param->line_id);
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/* 使能EXTI通道中断唤醒 */
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if ((exti_mode & EXTI_MODE_INTERRUPT) == EXTI_MODE_INTERRUPT)
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{
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std_exti_interrupt_enable(exti_init_param->line_id);
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}
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/* 使能EXTI通道事件唤醒 */
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if ((exti_mode & EXTI_MODE_EVENT) == EXTI_MODE_EVENT)
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{
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std_exti_event_enable (exti_init_param->line_id);
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}
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}
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/**
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* @brief EXTI去初始化
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* @retval 无
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*/
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void std_exti_deinit(void)
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{
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EXTI->RTSR = 0x00000000U;
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EXTI->FTSR = 0x00000000U;
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EXTI->PIR = 0x3FFFFU;
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EXTI->EXTICR[0] = 0x00000000U;
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EXTI->EXTICR[1] = 0x00000000U;
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EXTI->IMR = 0xEFC00000U;
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EXTI->EMR = 0x00000000U;
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}
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/**
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* @brief EXTI初始化结构体初始化
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* @param exti_init_struct EXTI初始化参数结构体
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* @retval 无
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*/
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void std_exti_struct_init(std_exti_init_t* exti_init_struct)
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{
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exti_init_struct->line_id = EXTI_LINE_GPIO_PIN0;
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exti_init_struct->mode = EXTI_MODE_NONE;
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exti_init_struct->trigger = EXTI_TRIGGER_NONE;
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exti_init_struct->gpio_id = EXTI_GPIOA;
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}
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/**
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* @}
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*/
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#endif /* STD_EXTI_PERIPHERAL_USED */
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/**
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* @}
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*/
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/**
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* @}
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*/
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