#include "usart.h" #include "mmodbus.h" #include "dlt645.h" #include "gateway_message.h" uint8_t UART6_RX_BUF[BUFF_SIZE]; uint8_t UART6_RX_STAT=0; uint32_t UART6_RX_NUM = 0; /** * @brief DEBUG_USART GPIO 配置,工作模式配置。115200 8-N-1 ，中断接收模式 * @param 无 * @retval 无 */ void DEBUG_USART_Config(void) { USART_InitTypeDef USART_InitStruct; GPIO_InitTypeDef GPIO_InitStruct; // Enable USART6 clock RCC_APB2PeriphClockCmd(DEBUG_USART_CLK, ENABLE); // Enable GPIOC clock RCC_AHB1PeriphClockCmd(DEBUG_USART_RX_GPIO_CLK, ENABLE); // Configure USART6 pins GPIO_InitStruct.GPIO_Pin = DEBUG_USART_RX_PIN | DEBUG_USART_TX_PIN; // USART6_TX (PC6) and USART6_RX (PC7) GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStruct.GPIO_OType = GPIO_OType_PP; GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(DEBUG_USART_TX_GPIO_PORT, &GPIO_InitStruct); // Connect USART6 pins to AF8 GPIO_PinAFConfig(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_SOURCE, DEBUG_USART_RX_AF); GPIO_PinAFConfig(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_SOURCE, DEBUG_USART_TX_AF); // Configure USART6 USART_InitStruct.USART_BaudRate = DEBUG_USART_BAUDRATE; USART_InitStruct.USART_WordLength = USART_WordLength_8b; USART_InitStruct.USART_StopBits = USART_StopBits_1; USART_InitStruct.USART_Parity = USART_Parity_No; USART_InitStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; USART_InitStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_Init(DEBUG_USART, &USART_InitStruct); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = DEBUG_USART_IRQ; //IRQ通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //主优先级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //从优先级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能通道 NVIC_Init(&NVIC_InitStructure); // Enable USART6 USART_ITConfig(DEBUG_USART, USART_IT_IDLE, ENABLE); //开启空闲中断 DMA_Cmd(DEBUG_USART_DMA_STREAM, ENABLE); //使能DMA接收 USART_Cmd(DEBUG_USART, ENABLE); USART_ClearFlag(DEBUG_USART, USART_FLAG_TC); } void DEBUG_USART_IRQHandler(void) { uint16_t clear; if(USART_GetITStatus(DEBUG_USART,USART_IT_IDLE)!=RESET) { //清除空闲中断 clear=USART6->SR; clear=USART6->DR; //关闭DMA DMA_Cmd(DEBUG_USART_DMA_STREAM,DISABLE); UART6_RX_NUM=BUFF_SIZE-DMA_GetCurrDataCounter(DEBUG_USART_DMA_STREAM); //清除DMA中断 DMA_ClearFlag(DEBUG_USART_DMA_STREAM,DMA_IT_TCIF1); DMA_Cmd(DEBUG_USART_DMA_STREAM, ENABLE); //接收状态置位 UART6_RX_STAT=1; } } /** * @brief USART1 TX DMA 配置，内存到外设(USART1->DR) * @param 无 * @retval 无 */ void USART_DMA_Config(void) { // 使能串口和DMA时钟 RCC_APB2PeriphClockCmd(DEBUG_USART_CLK, ENABLE); RCC_AHB1PeriphClockCmd(DEBUG_USART_DMA_CLK, ENABLE); DMA_InitTypeDef DMA_InitStructure; DMA_InitStructure.DMA_Channel = DEBUG_USART_DMA_CHANNEL; /*设置DMA源：串口数据寄存器地址*/ DMA_InitStructure.DMA_PeripheralBaseAddr = DEBUG_USART_DR_BASE; /*内存地址(要传输的变量的指针)*/ DMA_InitStructure.DMA_Memory0BaseAddr = (u32)UART6_RX_BUF; /*方向：从外设到内存*/ DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; /*传输大小DMA_BufferSize=SENDBUFF_SIZE*/ DMA_InitStructure.DMA_BufferSize = BUFF_SIZE; /*外设地址不增*/ DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; /*内存地址自增*/ DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable; /*外设数据单位*/ DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte; /*内存数据单位 8bit*/ DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte; /*DMA模式：不断循环*/ DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; /*优先级：中*/ DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; /*禁用FIFO*/ DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable; DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full; /*存储器突发传输 16个节拍*/ DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; /*外设突发传输 1个节拍*/ DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; /*配置DMA2的数据流*/ DMA_Init(DEBUG_USART_DMA_STREAM, &DMA_InitStructure); USART_DMACmd(DEBUG_USART,USART_DMAReq_Rx,ENABLE); DMA_ITConfig(DEBUG_USART_DMA_STREAM,DMA_IT_TC,ENABLE); NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream5_IRQn ;//串口1发送中断通道 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //抢占优先级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //子优先级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能 NVIC_Init(&NVIC_InitStructure); } void DMA2_Stream5_IRQHandler() { if (DMA_GetITStatus(DMA2_Stream1, DMA_IT_TCIF1)) { DMA_ClearITPendingBit(DMA2_Stream1, DMA_IT_TCIF1); } } /* 485串口de控制端口 */ void USART_485_DE_init() { GPIO_InitTypeDef GPIO_InitStruct; RCC_AHB1PeriphClockCmd(USART_485_DE_GPIO_CLK, ENABLE); GPIO_InitStruct.GPIO_Pin = USART_485_DE_PIN; GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStruct.GPIO_OType = GPIO_OType_PP; GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(USART_485_DE_GPIO_PORT, &GPIO_InitStruct); } void USART_485_DE_TX() { GPIO_WriteBit(USART_485_DE_GPIO_PORT,USART_485_DE_PIN,1); } void USART_485_DE_RX() { GPIO_WriteBit(USART_485_DE_GPIO_PORT,USART_485_DE_PIN,0); } void USART_485_Send(uint8_t *message,uint16_t size) { uint16_t i=0; USART_485_DE_TX(); for(i=0;i>8; /* 取出低八位 */ temp_l = ch&0XFF; /* 发送高八位 */ USART_SendData(pUSARTx,temp_h); while (USART_GetFlagStatus(pUSARTx, USART_FLAG_TXE) == RESET); /* 发送低八位 */ USART_SendData(pUSARTx,temp_l); while (USART_GetFlagStatus(pUSARTx, USART_FLAG_TXE) == RESET); } void USART3_IRQHandler(){ GATEWAY_PARAMS *get; get= get_gateway_config_params(); if(get->device_params->protocol == 3) mmodbus_callback(); else if(get->device_params->protocol == 1 || get->device_params->protocol == 2) dlt_callback(); } /*********************************************END OF FILE**********************/