HAL_UART_IRQHandler(UART_HandleTypeDef *huart)分析

2024-06-04 19:20
文章标签 分析 hal uart irqhandler handletypedef huart

本文主要是介绍HAL_UART_IRQHandler(UART_HandleTypeDef *huart)分析，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

//接收没错误：执行UART_Receive_IT(huart)
//接收有错误：执行UART_Receive_IT(huart)、HAL_UART_ErrorCallback(huart)

void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{uint32_t isrflags   = READ_REG(huart->Instance->SR);uint32_t cr1its     = READ_REG(huart->Instance->CR1);uint32_t cr3its     = READ_REG(huart->Instance->CR3);uint32_t errorflags = 0x00U;uint32_t dmarequest = 0x00U;/* If no error occurs */errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));if (errorflags == RESET){/* UART in mode Receiver -------------------------------------------------*/if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)){UART_Receive_IT(huart);		//#1 接收没错误return;}}/* If some errors occur */if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET))){/* UART parity error interrupt occurred ----------------------------------*/if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET)){huart->ErrorCode |= HAL_UART_ERROR_PE;}/* UART noise error interrupt occurred -----------------------------------*/if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)){huart->ErrorCode |= HAL_UART_ERROR_NE;}/* UART frame error interrupt occurred -----------------------------------*/if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)){huart->ErrorCode |= HAL_UART_ERROR_FE;}/* UART Over-Run interrupt occurred --------------------------------------*/if (((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)){huart->ErrorCode |= HAL_UART_ERROR_ORE;}/* Call UART Error Call back function if need be --------------------------*/if (huart->ErrorCode != HAL_UART_ERROR_NONE){/* UART in mode Receiver -----------------------------------------------*/if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)){UART_Receive_IT(huart);	//#2 接收有错误}/* If Overrun error occurs, or if any error occurs in DMA mode reception,consider error as blocking */dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || dmarequest){/* Blocking error : transfer is abortedSet the UART state ready to be able to start again the process,Disable Rx Interrupts, and disable Rx DMA request, if ongoing */UART_EndRxTransfer(huart);/* Disable the UART DMA Rx request if enabled */if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)){CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);/* Abort the UART DMA Rx channel */if (huart->hdmarx != NULL){/* Set the UART DMA Abort callback :will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK){/* Call Directly XferAbortCallback function in case of error */huart->hdmarx->XferAbortCallback(huart->hdmarx);}}else{/* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)/*Call registered error callback*/huart->ErrorCallback(huart);
#else/*Call legacy weak error callback*/HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */}}else{/* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)/*Call registered error callback*/huart->ErrorCallback(huart);
#else/*Call legacy weak error callback*/HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */}}else{/* Non Blocking error : transfer could go on.Error is notified to user through user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)/*Call registered error callback*/huart->ErrorCallback(huart);
#else/*Call legacy weak error callback*/HAL_UART_ErrorCallback(huart);		//#3 接收有错误
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */huart->ErrorCode = HAL_UART_ERROR_NONE;}}return;} /* End if some error occurs *//* UART in mode Transmitter ------------------------------------------------*/if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)){UART_Transmit_IT(huart);return;}/* UART in mode Transmitter end --------------------------------------------*/if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)){UART_EndTransmit_IT(huart);return;}
}

//#1 接收没错误、#2 接收有错误，接收数据量达到设定值会自动关闭接收中断
//HAL_UART_Receive_IT(&huart1,Tx_Buff,1); //设定接收量为1

static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
{uint16_t *tmp;/* Check that a Rx process is ongoing */if (huart->RxState == HAL_UART_STATE_BUSY_RX){if (huart->Init.WordLength == UART_WORDLENGTH_9B){tmp = (uint16_t *) huart->pRxBuffPtr;if (huart->Init.Parity == UART_PARITY_NONE){*tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);huart->pRxBuffPtr += 2U;}else{*tmp = (uint16_t)(huart->Instance->DR & (uint16_t)0x00FF);huart->pRxBuffPtr += 1U;}}else{if (huart->Init.Parity == UART_PARITY_NONE){*huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);}else{*huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);}}if (--huart->RxXferCount == 0U){/* Disable the UART Data Register not empty Interrupt */__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);		//自动关闭接收中断/* Disable the UART Parity Error Interrupt */__HAL_UART_DISABLE_IT(huart, UART_IT_PE);/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);/* Rx process is completed, restore huart->RxState to Ready */huart->RxState = HAL_UART_STATE_READY;#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)/*Call registered Rx complete callback*/huart->RxCpltCallback(huart);
#else/*Call legacy weak Rx complete callback*/HAL_UART_RxCpltCallback(huart);			//#4 接收回调
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */return HAL_OK;}return HAL_OK;}else{return HAL_BUSY;}
}

//#3 接收有错误回调

__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{/* Prevent unused argument(s) compilation warning */UNUSED(huart);/* NOTE: This function should not be modified, when the callback is needed,the HAL_UART_ErrorCallback could be implemented in the user file*/
}

//#4 接收回调

__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{/* Prevent unused argument(s) compilation warning */UNUSED(huart);/* NOTE: This function should not be modified, when the callback is needed,the HAL_UART_RxCpltCallback could be implemented in the user file*/
}

这篇关于HAL_UART_IRQHandler(UART_HandleTypeDef *huart)分析的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！


http://www.chinasem.cn/article/1030890。

相关文章

Go标准库常见错误分析和解决办法

Go标准库常见错误分析和解决办法

《Go标准库常见错误分析和解决办法》Go语言的标准库为开发者提供了丰富且高效的工具,涵盖了从网络编程到文件操作等各个方面,然而,标准库虽好,使用不当却可能适得其反,正所谓工欲善其事,必先利其器,本文将... 目录1. 使用了错误的time.Duration2. time.After导致的内存泄漏3. jsO
阅读更多...
Spring事务中@Transactional注解不生效的原因分析与解决

Spring事务中@Transactional注解不生效的原因分析与解决

《Spring事务中@Transactional注解不生效的原因分析与解决》在Spring框架中,@Transactional注解是管理数据库事务的核心方式,本文将深入分析事务自调用的底层原理,解释为... 目录1. 引言2. 事务自调用问题重现2.1 示例代码2.2 问题现象3. 为什么事务自调用会失效3
阅读更多...
找不到Anaconda prompt终端的原因分析及解决方案

找不到Anaconda prompt终端的原因分析及解决方案

《找不到Anacondaprompt终端的原因分析及解决方案》因为anaconda还没有初始化,在安装anaconda的过程中,有一行是否要添加anaconda到菜单目录中,由于没有勾选,导致没有菜... 目录问题原因问http://www.chinasem.cn题解决安装了 Anaconda 却找不到 An
阅读更多...
Spring定时任务只执行一次的原因分析与解决方案

Spring定时任务只执行一次的原因分析与解决方案

《Spring定时任务只执行一次的原因分析与解决方案》在使用Spring的@Scheduled定时任务时,你是否遇到过任务只执行一次,后续不再触发的情况？这种情况可能由多种原因导致,如未启用调度、线程... 目录1. 问题背景2. Spring定时任务的基本用法3. 为什么定时任务只执行一次？3.1 未启用
阅读更多...
C++ 各种map特点对比分析

C++ 各种map特点对比分析

《C++各种map特点对比分析》文章比较了C++中不同类型的map（如std::map,std::unordered_map,std::multimap,std::unordered_multima... 目录特点比较C++ 示例代码 ​​​​​​代码解释特点比较1. std::map底层实现：基于红黑
阅读更多...
Spring、Spring Boot、Spring Cloud 的区别与联系分析

Spring、Spring Boot、Spring Cloud 的区别与联系分析

《Spring、SpringBoot、SpringCloud的区别与联系分析》Spring、SpringBoot和SpringCloud是Java开发中常用的框架,分别针对企业级应用开发、快速开... 目录1. Spring 框架2. Spring Boot3. Spring Cloud总结1. Sprin
阅读更多...
Spring 中 BeanFactoryPostProcessor 的作用和示例源码分析

Spring 中 BeanFactoryPostProcessor 的作用和示例源码分析

《Spring中BeanFactoryPostProcessor的作用和示例源码分析》Spring的BeanFactoryPostProcessor是容器初始化的扩展接口,允许在Bean实例化前... 目录一、概览1. 核心定位2. 核心功能详解3. 关键特性二、Spring 内置的 BeanFactory
阅读更多...
MyBatis-Plus中Service接口的lambdaUpdate用法及实例分析

MyBatis-Plus中Service接口的lambdaUpdate用法及实例分析

《MyBatis-Plus中Service接口的lambdaUpdate用法及实例分析》本文将详细讲解MyBatis-Plus中的lambdaUpdate用法,并提供丰富的案例来帮助读者更好地理解和应... 目录深入探索MyBATis-Plus中Service接口的lambdaUpdate用法及示例案例背景
阅读更多...
MyBatis-Plus中静态工具Db的多种用法及实例分析

MyBatis-Plus中静态工具Db的多种用法及实例分析

《MyBatis-Plus中静态工具Db的多种用法及实例分析》本文将详细讲解MyBatis-Plus中静态工具Db的各种用法,并结合具体案例进行演示和说明,具有很好的参考价值,希望对大家有所帮助,如有... 目录MyBATis-Plus中静态工具Db的多种用法及实例案例背景使用静态工具Db进行数据库操作插入
阅读更多...
Go使用pprof进行CPU,内存和阻塞情况分析

Go使用pprof进行CPU,内存和阻塞情况分析

《Go使用pprof进行CPU,内存和阻塞情况分析》Go语言提供了强大的pprof工具,用于分析CPU、内存、Goroutine阻塞等性能问题,帮助开发者优化程序,提高运行效率,下面我们就来深入了解下... 目录1. pprof 介绍2. 快速上手：启用 pprof3. CPU Profiling：分析 C
阅读更多...

Copyright China编程 23002807@qq.com

沪ICP备2023033072号-2