#include "../main/SystemInclude.h"

const u32 baudRateVaule[6]   ={4800, 9600, 19200, 38400, 57600, 115200};

COM_DATA_TypeDef comState;

void StartDMAForRxdMainUartData(void)
{
	#ifndef ENABLE_TURN_OFF_RS485 
	#pragma message("[undefined] ENABLE_TURN_OFF_RS485")
	#elif(ENABLE_TURN_OFF_RS485)
		RS485_Enable_RX();
	#endif	
	comState.state.ReceivedData = 0 ; //重置接收完成标志
	comState.state.SendingData =  0 ; //重置发送中标志
 	DMA_UART_AnyLength_Rx_Init(baudRateVaule[baudRate]);//初始化UART DMA接收并开始接收
	//接收指针指向接收数组
	comState.state.ReceivedData = 0 ;//接收完成标志位
}


void DMAForUART_Tx_Callback(void)
{
	comState.state.SendingData = 0 ; 			//UART DMA发送完成
	LHL_DMA_Stop(&DMA_Handle_UartTx);     //关闭DMA发送数据
	RestartDMAForRxdMainUartData();			  //切换回接收
}

void StartDMAForTxdMainUartData(void)
{
	LHL_DMA_Stop(&DMA_Handle_UartRx);//关闭DMA接收数据

	#ifndef ENABLE_TURN_OFF_RS485 
	#pragma message("[undefined] ENABLE_TURN_OFF_RS485")
	#elif(ENABLE_TURN_OFF_RS485)
		RS485_Enable_TX();
	#endif

	comState.state.SendingData =  1 ; 
	comState.TxLenth = MBBuf.TxdLen;
//	memcpy(comState.TxdData, MBBuf.TxPointer, comState.TxLenth );

//	for (u8 i=0;i<comState.TxLenth;i++) printf("%c",comState.TxdData[i]);
 	DMA_UART_Tx_Init();//初始化DMA 并开始传输
	DMA_register_irq_callback(DMA_CHANNEL_UART_Tx,NULL,DMAForUART_Tx_Callback);//注册传输完成中断
}


void RestartDMAForRxdMainUartData(void)
{
	#ifndef ENABLE_TURN_OFF_RS485 
	#pragma message("[undefined] ENABLE_TURN_OFF_RS485")
	#elif(ENABLE_TURN_OFF_RS485)
		RS485_Enable_RX();
	#endif	
	
	comState.state.ReceivedData = 0 ;//接收完成标志位
	
	DMA_DMAMUX_CFG(DMA_CHANNEL_UART_Rx,REQUEST_SOURCE_UART_RX);//将DMAMUX链接回到串口接收通道 
	DMA_Handle_UartRx.Init.Dest_Address = (uint32_t)comState.RxdData;//重置DMA目标地址到接收数组起始地址
	LHL_DMA_GenerateTCD(&DMA_Handle_UartRx, &DMA_Handle_UartRx.Init, (DMA_DES_N_TypeDef *)(DMA_DES_N_BASE + 32u * DMA_Handle_UartRx.Channel));  /* 写入DMA寄存器 */

	LHL_DMA_Start(&DMA_Handle_UartRx); /*开始接收*/
}

//void RestartDMAForTxdMainUartData(void)
//{
//	LHL_DMA_Stop(&DMA_Handle_UartRx);//关闭DMA接收数据

//	comState.state.SendingData =  1 ; 
//	comState.TxLenth = MBBuf.TxdLen;
//	memcpy(comState.TxdData, MBBuf.TxPointer, comState.TxLenth );
//	
//	DMA_Handle_UartTx.Init.Src_Address = (uint32_t)&comState.TxdData;						// 源：缓存区
//	DMA_Handle_UartTx.Init.Repetition = comState.TxLenth ;                         
//	LHL_DMA_GenerateTCD(&DMA_Handle_UartTx, &DMA_Handle_UartTx.Init, (DMA_DES_N_TypeDef *)(DMA_DES_N_BASE + 32u * DMA_Handle_UartTx.Channel));  /* 写入DMA寄存器 */
//	LHL_DMA_Start(&DMA_Handle_UartTx);
//	DMA_register_irq_callback(DMA_CHANNEL_UART_Tx,NULL,DMAForUART_Tx_Callback);//注册传输完成中断
//}

void ReceivedDataProcessing(void)
{
	comState.state.ReceivedData = 0 ; 	//重置接收完成标志
	Get_UART_Rx_ActualLength();//更新接收长度
	MBBuf.RxdLen  	= comState.RxLenth;	//接收数据长度 
	MBBuf.RxPointer = comState.RxdData;	//接收数据
	MBBuf.TxPointer = comState.TxdData;	//发送数据 
 
 	if(ModBusProtocolDetection()) //检测到Modbus协议
	{
		ModBusDataProcessing(); //协议处理函数 协议处理后回复数据在MBBuf.RxPointer处move到MBBuf.TxPointer，也就是实际comState.TxdData存储区域

    StartDMAForTxdMainUartData();//回复帧      
	}
	else 	RestartDMAForRxdMainUartData();//继续重新接收(能够使通信失败时重新复位)

}








/*********************************************************************************************************************************************/
/* 带RS485的控制 */
/*********************************************************************************************************************************************/
#ifndef ENABLE_TURN_OFF_RS485 
#pragma message("[undefined] ENABLE_TURN_OFF_RS485")
#elif(ENABLE_TURN_OFF_RS485)
	void RS485_Enable_TX(void)
	{
		RS485DE_OUTPUT();
		ENABLE_TXD();
	}

	void RS485_Enable_RX(void)
	{
		RS485DE_OUTPUT();
		ENABLE_RXD();
	}
#endif