279 lines
12 KiB
C
279 lines
12 KiB
C
#include "../main/SystemInclude.h"
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DMA_HandleTypeDef DMA_Handle_UartRx , DMA_Handle_UartTx ;
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/*********************************************************************************************************************************************/
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/*初始化*/
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/*********************************************************************************************************************************************/
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void UART0_Init(uint32_t baudrate_bps)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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UART_InitTypeDef UART_InitStructure;
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/* 1. 设置 UART GPIO复用引脚 */
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GPIO_InitStructure.Pin = GPIO_PIN_1;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_InitStructure.Current = GPIO_CURRENT_4mA;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.SchmittTrigger = ENABLE;
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GPIO_InitStructure.Alternate = GPIO0_1_AF_SIN0;
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LHL_GPIO_Init(pGPIO0, &GPIO_InitStructure); // P0.1 -> SIN0(UART_RX)
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GPIO_InitStructure.Pin = GPIO_PIN_2;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Current = GPIO_CURRENT_4mA;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.SchmittTrigger = DISABLE;
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GPIO_InitStructure.Alternate = GPIO0_2_AF_SOUT0;
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LHL_GPIO_Init(pGPIO0, &GPIO_InitStructure); // P0.2 -> SOUT0(UART_TX)
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/* 2. 设置UART参数 */
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UART_InitStructure.UART_BaudRate = baudrate_bps; // 硬件最高波特率需小于时钟频率/16
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UART_InitStructure.UART_WordLength = UART_WordLength_8b; // 数字位数：8
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UART_InitStructure.UART_StopBits = UART_StopBits_1; // 停止位数：1
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UART_InitStructure.UART_Parity = UART_Parity_None; // 校验位：无
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LHL_UART_Init(pUART0, &UART_InitStructure);
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//pUART0->IER_DLH = 0x1;
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/*
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UART_IT_EDSSI 调制解调器状态中断
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UART_IT_ELSI 接收线路状态中断
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UART_IT_ETBEI 发送中断
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UART_IT_ERBFI 接收中断
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*/
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// LHL_UART_ITConfig( pUART0 ,UART_IT_EDSSI|UART_IT_ELSI|UART_IT_ETBEI|UART_IT_ERBFI , ENABLE);
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// NVIC_SetPriority(UART0_IRQn,1);
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// NVIC_EnableIRQ(UART0_IRQn);
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}
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void UART1_Init(uint32_t baudrate_bps)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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UART_InitTypeDef UART_InitStructure;
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/* 1. 设置 UART GPIO复用引脚 */
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GPIO_InitStructure.Pin = GPIO_PIN_0;
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GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
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GPIO_InitStructure.Current = GPIO_CURRENT_4mA;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.SchmittTrigger = ENABLE;
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GPIO_InitStructure.Alternate = GPIO1_0_AF_SIN1;
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LHL_GPIO_Init(pGPIO1, &GPIO_InitStructure); // P0.1 -> SIN0(UART_RX)
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GPIO_InitStructure.Pin = GPIO_PIN_1;
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Current = GPIO_CURRENT_4mA;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.SchmittTrigger = DISABLE;
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GPIO_InitStructure.Alternate = GPIO1_1_AF_SOUT1;
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LHL_GPIO_Init(pGPIO1, &GPIO_InitStructure); // P0.2 -> SOUT0(UART_TX)
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/* 2. 设置UART参数 */
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UART_InitStructure.UART_BaudRate = baudrate_bps; // 硬件最高波特率需小于时钟频率/16
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UART_InitStructure.UART_WordLength = UART_WordLength_8b; // 数字位数：8
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UART_InitStructure.UART_StopBits = UART_StopBits_1; // 停止位数：1
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UART_InitStructure.UART_Parity = UART_Parity_None; // 校验位：无
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LHL_UART_Init(pUART1, &UART_InitStructure);
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/*
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UART_IT_EDSSI 调制解调器状态中断
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UART_IT_ELSI 接收线路状态中断
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UART_IT_ETBEI 发送中断
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UART_IT_ERBFI 接收中断
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*/
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// LHL_UART_ITConfig( pUART1 ,UART_IT_EDSSI|UART_IT_ELSI|UART_IT_ETBEI|UART_IT_ERBFI , ENABLE);
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// NVIC_SetPriority(UART1_IRQn,1);
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// NVIC_EnableIRQ(UART1_IRQn);
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}
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/*********************************************************************************************************************************************/
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/*中断方式*/
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/*********************************************************************************************************************************************/
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/**
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* @brief UART0中断服务函数（Interrupt Service Routine, ISR）
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* @note 此函数在UART0中断触发时自动调用（接收到数据）
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* @warning 中断处理应尽量简短，避免长时间阻塞其他中断
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*/
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void UART0_IRQHandler(void)
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{
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/* 收发数据，读写RBR_THR_DLL寄存器：
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* - 读取时：作为接收缓冲寄存器(RBR)，存储UART接收到的数据
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* - 写入时：作为发送保持寄存器(THR)，用于发送数据 */
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// if (LHL_UART_GetFlag(pUART0, UART_FLAG_DR) == SET) // 判断接收中断
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// if ((LHL_UART_GetFlag(pUART0, UART_FLAG_THRE) == SET) && \
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// (LHL_UART_GetPending(pUART0, UART_IT_ETBEI) == SET)) // 判断发送中断
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if (LHL_UART_GetPending(pUART0, UART_IT_RXNE) == SET) // 判断接收中断
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{
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// uart_buffer[index++] = LHL_UART_ReceiveData(pUART0); // 放入缓存
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}
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if (LHL_UART_GetPending(pUART0, UART_IT_TXE) == SET)
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{
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// if(index) // 如果缓存还有数据
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// {
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// LHL_UART_SendData(pUART0, uart_buffer[--index]);
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// }
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// else
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// {
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// LHL_UART_SendData(pUART0, 0x00); // Send NULL
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// LHL_UART_ITConfig(pUART0, UART_IT_ETBEI, DISABLE); // 关闭发送中断
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// }
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}
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}
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/**
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* @brief UART1中断服务函数（Interrupt Service Routine, ISR）
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* @note 此函数在UART1中断触发时自动调用（接收到数据）
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* @warning 中断处理应尽量简短，避免长时间阻塞其他中断
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*/
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void UART1_IRQHandler(void)
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{
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if (LHL_UART_GetPending(pUART1, UART_IT_RXNE) == SET) // 判断接收中断
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{
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// uart_buffer[index++] = LHL_UART_ReceiveData(pUART0); // 放入缓存
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}
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if (LHL_UART_GetPending(pUART1, UART_IT_TXE) == SET)
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{
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}
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}
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/*********************************************************************************************************************************************/
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/*DMA 方式*/
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/*********************************************************************************************************************************************/
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/*
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基础定时器中断回调函数
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与DMA_UART_AnyLength_Rx_Init 联合使用
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*/
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void Btimer_irq_callback(void)
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{
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comState.state.ReceivedData = 1 ;//接收完成标志位
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}
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//接收--------------------------------------------------------------------
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/*
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UART DMA不定长接收初始化
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DMA_CHANNEL 使用两个通道作为串口DMA收发使用，RX TX共用一个，Btime0使用一个，
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两个串口物理接口都使用这两个DMA通道，使用宏 DMA_USE_UART_CHOOSE 切换UART0或者UART1来使用这两个DMA通道
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*/
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void DMA_UART_AnyLength_Rx_Init( uint32_t baudrate_bps)
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{
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DMA_HandleTypeDef DMA_Handle_BTime;
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DMA_InitTypeDef DMA_InitStructure[TCD_COUNT]; /* 分散聚合模式的多个初始化结构体参数 */
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static DMA_DES_N_TypeDef TCD_Quene[TCD_COUNT] __ALIGN(32);/* DMA TCD描述符必须32位对齐*/
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static uint8_t BTimerCTRLValue[2]; /* 定时器配置参数 */
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uint16_t IdleFrameValue;
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/* 1 配置DMAUX 请求源UART0 RX，触发MA0 */
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DMA_DMAMUX_CFG(DMA_CHANNEL_UART_Rx,REQUEST_SOURCE_UART_RX);//将DMAMUX链接到串口接收通道(DMA通道0)
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LHL_DMA_Stop(&DMA_Handle_UartRx);
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DMA_Handle_UartRx.Channel = DMA_CHANNEL_UART_Rx; //配置DMA0，请求源来自DMAMUX UART_RX，用于搬运UART RX数据
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DMA_Handle_UartRx.Request = DMA_HARDWARE_REQUEST;
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DMA_Handle_UartRx.Mode = DMA_CHAINING_MODE;
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DMA_Handle_UartRx.Init.Direction = DMA_PERIPH_TO_MEMORY; // 外设->内存
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DMA_Handle_UartRx.Init.Src_Address = (uint32_t)(&DMA_UART->RBR_THR_DLL);
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DMA_Handle_UartRx.Init.Dest_Address = (uint32_t)comState.RxdData; // 串口数据缓存区
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DMA_Handle_UartRx.Init.Data_Width = DMA_DATA_WIDTH_1B;
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DMA_Handle_UartRx.Init.Data_Size = 1;
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DMA_Handle_UartRx.Init.Repetition = RXD_MAX_DATA;
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DMA_Handle_UartRx.Init.Trans_Mode = DMA_SINGLE_TRANSMISSION;
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DMA_Handle_UartRx.Init.Chaining = (DMA_CHAINING_t)DMA_CHANNEL_BtimCfg ;//理论上应该写TO_DMA_CHANNEL_x (x=01/2/3/NONE) 不过这样写简便，以适应DMA_CHANNEL_BtimCfg 改变的情况
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if (LHL_DMA_Init(&DMA_Handle_UartRx) != LHL_OK)
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{
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while(1);
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}
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/*1 初始化BTIM TImer Base，用于串口空闲帧超时监控 新增ADC使用DMA序列采样流程 */
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/*2 计算空闲间隔：超时时间为IDEL_FRAME_INTERVAL个数据位 */
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/*3 配置BTIMER CTRL寄存器参数，DMA1负责写入 */
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/*4 开启BTIM1中断：产生中断表示串口接收到一帧数据，且空闲时间超过空闲间隔设定 */
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BTimerCTRLValue[0] = 0;
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BTimerCTRLValue[1] = BTIM_TCTRL_TEN_Msk | BTIM_TCTRL_TIE_Msk;
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IdleFrameValue = (uint16_t)(SystemCoreClock * IDLE_FRAME_INTERVAL / baudrate_bps) - 1;
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BTIM0_Init(IdleFrameValue);
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Btimer_register_irq_callback(BTIMER_0,Btimer_irq_callback); //注册中断函数，用于进入空闲帧判断
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DMA_Handle_BTime.Channel = DMA_CHANNEL_BtimCfg; //配置DMA通道1，由DMA0触发，用于搬运BTIM设置参数
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DMA_Handle_BTime.Request = DMA_HARDWARE_REQUEST;
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DMA_Handle_BTime.Mode = DMA_SCATTER_GATHER_MODE; // 分散-聚合模式
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DMA_Handle_BTime.TCD_Count = TCD_COUNT; // TCD描述符数量
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DMA_Handle_BTime.TCD_List = TCD_Quene; // TCD描述符链表
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DMA_Handle_BTime.TCD_Init = DMA_InitStructure; // TCD初始化队列
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DMA_InitStructure[0].Direction = DMA_MEMORY_TO_PERIPH; // TCD0用于复位BTIM寄存器
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DMA_InitStructure[0].Src_Address = (uint32_t)&BTimerCTRLValue[0];
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DMA_InitStructure[0].Dest_Address = (uint32_t)(&BTIM->TCTRL_0);
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DMA_InitStructure[0].Data_Width = DMA_DATA_WIDTH_1B;
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DMA_InitStructure[0].Data_Size = 1;
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DMA_InitStructure[0].Repetition = 1;
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DMA_InitStructure[0].Trans_Mode = DMA_CYCLIC_TRANSMISSION;
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DMA_InitStructure[0].TCD_Address = (int32_t)&TCD_Quene[1];
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DMA_InitStructure[0].Auto_Start = DISABLE;
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DMA_InitStructure[0].INT_Major = DISABLE;
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DMA_InitStructure[0].INT_Half = DISABLE;
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DMA_InitStructure[0].Chaining = TO_DMA_CHANNEL_NONE;
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DMA_InitStructure[1].Direction = DMA_MEMORY_TO_PERIPH; // TCD1用于重启BTIM寄存器
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DMA_InitStructure[1].Src_Address = (uint32_t)&BTimerCTRLValue[1];
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DMA_InitStructure[1].Dest_Address = (uint32_t)(&BTIM->TCTRL_0);
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DMA_InitStructure[1].Data_Width = DMA_DATA_WIDTH_1B;
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DMA_InitStructure[1].Data_Size = 1;
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DMA_InitStructure[1].Repetition = 1;
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DMA_InitStructure[1].Trans_Mode = DMA_CYCLIC_TRANSMISSION;
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DMA_InitStructure[1].TCD_Address = (int32_t)&TCD_Quene[0];
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DMA_InitStructure[1].Auto_Start = ENABLE;
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DMA_InitStructure[1].INT_Major = DISABLE;
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DMA_InitStructure[1].INT_Half = DISABLE;
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DMA_InitStructure[1].Chaining = TO_DMA_CHANNEL_NONE;
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if (LHL_DMA_Init(&DMA_Handle_BTime) != LHL_OK)
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{
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while(1);
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}
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/*DMA 配置完成开始接收*/
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LHL_DMA_Start(&DMA_Handle_UartRx); /* 显式启动DMA0 ,开始接收*/
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}
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//获取不定长接收实际长度
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void Get_UART_Rx_ActualLength(void)
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{
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/* 缓冲区数据长度计算,获取当前帧长度*/
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comState.RxLenth = LHL_DMA_GetDestAddress(DMA_CHANNEL_UART_Rx) - (u32)&comState.RxdData ;
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}
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//发送--------------------------------------------------------------------
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void DMA_UART_Tx_Init(void)
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{
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DMA_DMAMUX_CFG(DMA_CHANNEL_UART_Tx,REQUEST_SOURCE_UART_TX);//将DMAMUX链接到串口接收通道(DMA通道0)
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/* 3.4 配置DMA通道1，负责缓存区数据搬运到UART0 TX数据 */
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DMA_Handle_UartTx.Channel = DMA_CHANNEL_UART_Tx;
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DMA_Handle_UartTx.Mode = DMA_DIRECT_MODE;
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DMA_Handle_UartTx.Request = DMA_HARDWARE_REQUEST;
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DMA_Handle_UartTx.Init.Direction = DMA_MEMORY_TO_PERIPH; // 内存->外设
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DMA_Handle_UartTx.Init.Src_Address = (uint32_t)&comState.TxdData; // 源：缓存区
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DMA_Handle_UartTx.Init.Dest_Address = (uint32_t)(&DMA_UART->RBR_THR_DLL); // 目的：UART TX寄存器
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DMA_Handle_UartTx.Init.Data_Width = DMA_DATA_WIDTH_1B;
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DMA_Handle_UartTx.Init.Data_Size = 1;
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DMA_Handle_UartTx.Init.Repetition = comState.TxLenth ;
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DMA_Handle_UartTx.Init.Trans_Mode = DMA_SINGLE_TRANSMISSION; // 单次模式
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if (LHL_DMA_Init(&DMA_Handle_UartTx) != LHL_OK)
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{
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while(1); // DMA Init Error
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}
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// /* 使能DMA中断 */
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LHL_DMA_ITConfig(&DMA_Handle_UartTx, DMA_IT_MAJOR, ENABLE); // 配置DMA1主中断
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// NVIC_EnableIRQ(DMA1_CH0_IRQn); //DMA_CHANNEL_UART_Tx
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LHL_DMA_Start(&DMA_Handle_UartTx); /* 显式启动DMA0 ,开始发送*/
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}
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