#include "MODBUS.H"
#include "CTRL.H"   
#include "task.h"

#define USINGUART0
#define MAX_BUF_SIZE 256    
#define T15    18     //18个bit                
uint8_t        receTimeOut;        //接收超时
uint8_t     TxTimeOut;        //启动发送延时
uint8_t        sendBuf[MAX_BUF_SIZE],receBuf[MAX_BUF_SIZE]; //发送接收缓冲区      
uint16_t       *temp ;                             

uint8_t    sendCount;        //发送字节个数
uint8_t    receCount;        //接收到的字节个数
uint8_t    sendPosi;        //发送位置 

USART_InitTypeDef USART_InitStructure;         

void beginSend(void);
void checkComm0Modbus(void);
void readCoil(void);
void readRegisters(void);
void forceSingleCoil(void);
void presetSingleRegister(void);
void presetMultipleRegisters(void);
void forceMultipleCoils(void);
uint16_t getRegisterVal(uint16_t addr,uint16_t *tempData);  
uint16_t getInputRegisterVal(uint16_t addr,uint16_t *tempData);
uint16_t getCoilVal(uint16_t addr,uint8_t *tempData);
uint16_t getInputStatusVal(uint16_t addr,uint8_t *tempData);
uint16_t setCoilVal(uint16_t addr,uint8_t tempData);

void Send(void); 
void Uart0PDMASend(void);

void InitModbus(void)
{
    temp = (uint16_t *)&IED;    
    InitUART0();              
}                                                              

void* mymemcpy( void* dest, const void* src, int count )
{
    char* d = (char*)dest;
    const char* s = (const char*)src;
    int n = count>>2;
    switch( count & 3 )
    {
        case 0:  
          do {  
            *d++ = *s++;
            case 3:      *d++ = *s++;
            case 2:      *d++ = *s++;
            case 1:      *d++ = *s++;
         } while (--n > 0);
   }
   return dest;
}


//字地址 0 - 255 (只取低8位)
//位地址 0 - 255 (只取低8位)

/* CRC 高位字节值表 */
const uint8_t auchCRCHi[] = {
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1,
0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0,
0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
} ;
/* CRC低位字节值表*/
const uint8_t auchCRCLo[] = {
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06,
0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04, 0xCC, 0x0C, 0x0D, 0xCD,
0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09,
0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A,
0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC, 0x14, 0xD4,
0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,
0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3,
0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,
0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A,
0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38, 0x28, 0xE8, 0xE9, 0x29,
0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED,
0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26,
0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60,
0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67,
0xA5, 0x65, 0x64, 0xA4, 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F,
0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,
0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E,
0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,
0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71,
0x70, 0xB0, 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92,
0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C,
0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B,
0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B,
0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42,
0x43, 0x83, 0x41, 0x81, 0x80, 0x40
} ;
                                                
uint16_t crc16(uint8_t *puchMsg, uint16_t usDataLen)
{
    uint8_t uchCRCHi = 0xFF ; /* 高CRC字节初始化 */
    uint8_t uchCRCLo = 0xFF ; /* 低CRC 字节初始化 */
    uint32_t uIndex ; /* CRC循环中的索引 */
    while (usDataLen--) /* 传输消息缓冲区 */
    {
        uIndex = uchCRCHi ^ *puchMsg++ ; /* 计算CRC */
        uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex] ;
        uchCRCLo = auchCRCLo[uIndex] ;
    }
    return (uchCRCHi << 8 | uchCRCLo) ;
}//uint16_t crc16(uint8_t *puchMsg, uint16_t usDataLen)

//读输入寄存器
void ReadInputStatus(void)
{
    uint8_t addr;
    uint8_t tempAddr;
    uint8_t byteCount;
    uint8_t bitCount;
    uint16_t crcData;
    uint8_t position;
    uint8_t i,k;
    uint8_t tempData;
    uint8_t  exit = 0;

    //addr = (receBuf[2]<<8) + receBuf[3];
    //tempAddr = addr & 0xfff;
    addr = receBuf[3];
    tempAddr = addr;

    //bitCount = (receBuf[4]<<8) + receBuf[5];    //读取的位个数
    bitCount = receBuf[5];

    byteCount = bitCount / 8;                    //字节个数
    if(bitCount%8 != 0)
        byteCount++;

    for(k=0;k<byteCount;k++)
    {//字节位置
        position = k + 3;
        sendBuf[position] = 0;
        for(i=0;i<8;i++)
        {
            getInputStatusVal(tempAddr,&tempData);

            sendBuf[position] |= tempData << i;
            tempAddr++;
            if(tempAddr >= addr+bitCount)
            {    //读完
                exit = 1;
                break;
            }
        }
        if(exit == 1)
            break;
    }

    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 0x02;
    sendBuf[2] = byteCount;
    byteCount += 3;
    crcData = crc16(sendBuf,byteCount);
    sendBuf[byteCount] = crcData >> 8;
    byteCount++;
    sendBuf[byteCount] = crcData & 0xff;
    sendCount = byteCount + 1;

    beginSend();
}

//读线圈状态
void readCoil(void)
{
    uint8_t addr;
    uint8_t tempAddr;
    uint8_t byteCount;
    uint8_t bitCount;
    uint16_t crcData;
    uint8_t position;
    uint8_t i,k;
    uint8_t tempData;
    uint8_t  exit = 0;

    //addr = (receBuf[2]<<8) + receBuf[3];
    //tempAddr = addr & 0xfff;
    addr = receBuf[3];
    tempAddr = addr;

    //bitCount = (receBuf[4]<<8) + receBuf[5];    //读取的位个数
    bitCount = receBuf[5];

    byteCount = bitCount / 8;                    //字节个数
    if(bitCount%8 != 0)
        byteCount++;

    for(k=0;k<byteCount;k++)
    {//字节位置
        position = k + 3;
        sendBuf[position] = 0;
        for(i=0;i<8;i++)
        {
            getCoilVal(tempAddr,&tempData);

            sendBuf[position] |= tempData << i;
            tempAddr++;
            if(tempAddr >= addr+bitCount)
            {    //读完
                exit = 1;
                break;
            }
        }
        if(exit == 1)
            break;
    }

    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 0x01;
    sendBuf[2] = byteCount;
    byteCount += 3;
    crcData = crc16(sendBuf,byteCount);
    sendBuf[byteCount] = crcData >> 8;
    byteCount++;
    sendBuf[byteCount] = crcData & 0xff;
    sendCount = byteCount + 1;

    beginSend();
}//void readCoil(void)
//读输入寄存器
void readInputRegisters(void)
{
    uint8_t addr;
    uint8_t tempAddr;
    uint16_t crcData;
    uint8_t readCount;
    uint8_t byteCount;                 
    uint16_t i;
    uint16_t tempData = 0;

    addr = (receBuf[2]<<8) + receBuf[3];
    tempAddr = addr & 0xfff;                                      
    readCount = receBuf[5];

    byteCount = readCount * 2;
    disable();
    for(i=0;i<byteCount;i+=2,tempAddr++)
    {
        getInputRegisterVal(tempAddr,&tempData);
        sendBuf[i+3] = tempData >> 8;
        sendBuf[i+4] = tempData & 0xff;
    }
    enable();
    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 4;
    sendBuf[2] = byteCount;
    byteCount += 3;
    crcData = crc16(sendBuf,byteCount);
    sendBuf[byteCount] = crcData >> 8;
    byteCount++;
    sendBuf[byteCount] = crcData & 0xff;

    sendCount = byteCount + 1;
    beginSend();
}
//读寄存器
void readRegisters(void)
{
    uint8_t addr;
    uint8_t tempAddr;
    uint16_t crcData;
    uint8_t readCount;
    uint8_t byteCount;                 
    uint16_t i;
    uint16_t tempData = 0;

    addr = (receBuf[2]<<8) + receBuf[3];
    tempAddr = addr & 0xfff;
    //addr = receBuf[3];
    //tempAddr = addr;

    //readCount = (receBuf[4]<<8) + receBuf[5];    //要读的个数
    readCount = receBuf[5];
    byteCount = sizeof (short)/sizeof(char);
    byteCount = readCount * 2;
    disable();
    for(i=0;i<byteCount;i+=2,tempAddr++)
    {
        getRegisterVal(tempAddr,&tempData);
        sendBuf[i+3] = tempData >> 8;
        sendBuf[i+4] = tempData & 0xff;
    }
    enable();
    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 3;
    sendBuf[2] = byteCount;
    byteCount += 3;
    crcData = crc16(sendBuf,byteCount);
    sendBuf[byteCount] = crcData >> 8;
    byteCount++;
    sendBuf[byteCount] = crcData & 0xff;

    sendCount = byteCount + 1;
    beginSend();
}//void readRegisters(void)


//强制单个线圈
void forceSingleCoil(void)
{
    uint8_t addr;
    uint8_t tempAddr;
    uint16_t tempData;
    uint8_t  onOff;
    uint8_t i;

    //addr = (receBuf[2]<<8) + receBuf[3];
    //tempAddr = addr & 0xfff;
    addr = receBuf[3];
    tempAddr = addr;

    //onOff = (receBuf[4]<<8) + receBuf[5];
    onOff = receBuf[4];

    //if(onOff == 0xff00)
    if(onOff == 0xff)
    {    //设为ON
        tempData = 1;
    }
    //else if(onOff == 0x0000)
    else if(onOff == 0x00)
    {    //设为OFF
        tempData = 0;
    }

    setCoilVal(tempAddr,tempData);

    for(i=0;i<receCount;i++)
    {
        sendBuf[i] = receBuf[i];
    }
    sendCount = receCount;
    beginSend();
}//void forceSingleCoil(void)


//设置多个寄存器
void presetMultipleRegisters(void)
{
    uint16_t addr;
    uint16_t tempAddr;   
//    uint8_t byteCount;
    uint16_t setCount;
    uint16_t crcData;
    uint16_t tempData;                           
    uint16_t i;

    addr = (receBuf[2]<<8) + receBuf[3];
    tempAddr = addr & 0xfff;
    //addr = receBuf[3];
    //tempAddr = addr & 0xff;

    //setCount = (receBuf[4]<<8) + receBuf[5];
    setCount = receBuf[5];
//    byteCount = receBuf[6];
                           

    for(i=0;i<setCount;i++,tempAddr++)
    {
        tempData = (receBuf[i*2+7]<<8) + receBuf[i*2+8];  

        setRegisterVal(tempAddr,tempData);
    }

    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 16;
    sendBuf[2] = addr >> 8;
    sendBuf[3] = addr & 0xff;
    sendBuf[4] = setCount >> 8;
    sendBuf[5] = setCount & 0xff;
    crcData = crc16(sendBuf,6);
    sendBuf[6] = crcData >> 8;
    sendBuf[7] = crcData & 0xff;
    sendCount = 8;               
    beginSend();
}//void presetMultipleRegisters(void)

void presetSingleRegister(void)
{
    uint8_t addr;
//    uint8_t tempAddr;         
    uint16_t crcData;
    uint16_t tempData;         

    addr = (receBuf[2]<<8) + receBuf[3];
//    tempAddr = addr & 0xfff;

    tempData = (receBuf[4]<<8) + receBuf[5];    
    
    disable(); 
    setRegisterVal(addr,tempData); 
    enable();

    sendBuf[0] = IED.cID;//localAddr;
    sendBuf[1] = 06;
    sendBuf[2] = addr >> 8;
    sendBuf[3] = addr & 0xff;
    sendBuf[4] = tempData >> 8;
    sendBuf[5] = tempData & 0xff;
    crcData = crc16(sendBuf,6);
    sendBuf[6] = crcData >> 8;
    sendBuf[7] = crcData & 0xff;
    sendCount = 8;               
    beginSend();
}

//检查uart0数据

void checkComm0Modbus(void)
{
    uint16_t crcData;
    uint16_t tempData;
    if((receBuf[0]!=IED.cID)&&(receBuf[0]!=0xFF)) //localAddr
        return ;
    if(receCount > 4)
    {      
        switch(receBuf[1])
        {
            case 1://读取线圈状态(读取点 16位以内)
            case 2://读取输入寄存器
            case 3://读取保持寄存器(一个或多个)    
            case 4:
            case 5://强制单个线圈
            case 6://设置单个寄存器
                    
                    if(receCount >= 8)
                    {//接收完成一组数据
                        //应该关闭接收中断
                                                
                        {
                            crcData = crc16(receBuf,6);
                            if(crcData == receBuf[7]+(receBuf[6]<<8))
                            {//校验正确
                                if(receBuf[1] == 1)
                                {//读取线圈状态(读取点 16位以内)
                                    readCoil();
                                }
                                else if(receBuf[1] == 2)
                                {
                                    //读取输入节点
                                    ReadInputStatus();
                                }
                                else if(receBuf[1] == 3)
                                {//读取保持寄存器(一个或多个)
                                    readRegisters();
                                }
                                else if(receBuf[1] == 4)
                                {//读输入寄存器
                                    readInputRegisters();
                                }
                                else if(receBuf[1] == 5)
                                {//强制单个线圈
                                    forceSingleCoil();
                                }
                                else if(receBuf[1] == 6)
                                {
                                    presetSingleRegister();
                                    //setRegisterVal
                                }

                            }
                        }
                        receCount = 0;             
                    }
                    break;

            case 15://设置多个线圈
                    tempData = receBuf[6];
                    tempData += 9;    //数据个数
                    if(receCount >= tempData)
                    {                              
                        {
                            crcData = crc16(receBuf,tempData-2);
                            if(crcData == (receBuf[tempData-2]<<8)+ receBuf[tempData-1])
                            {
                                //forceMultipleCoils();
                            }
                        }
                        receCount = 0;       
                    }
                    break;

            case 16://设置多个寄存器
                    tempData = (((unsigned int )receBuf[4])<<8) + receBuf[5];
                    tempData = tempData * 2;    //数据个数
                    tempData += 9;

                                                                                                    
                    if(receCount >= tempData)
                    {    
                        crcData = crc16(receBuf,tempData-2);
                        if(crcData == (((unsigned int)receBuf[tempData-2])<<8)+ receBuf[tempData-1])
                        {
                            presetMultipleRegisters();
                            TaskParsaCmd();
                        }                             
                        receCount = 0;       
                    }
                    break;

            default:
                    break;
        }
    }
}//void checkComm0(void)

//取线圈状态 返回0表示成功
uint16_t getCoilVal(uint16_t addr,uint8_t *tempData)
{                       
//    uint16_t result = 0;
    uint16_t tempAddr;
    unsigned char *pCoilPtr = 0;  
    unsigned int CoilAddr     = 0;
    unsigned int CoilBit      = 0;   

    tempAddr = addr & 0xFF;

    tempAddr = tempAddr%16;  //只有8位

    CoilAddr = tempAddr/8;
    CoilBit  = tempAddr%8;
    
    GetOutPut();
    pCoilPtr = &IED.OutputCoil.iCoil8;
    pCoilPtr+= CoilAddr;

    if(*pCoilPtr&(1<<CoilBit))
        *tempData      = 1;
    else
        *tempData     = 0;    
    return 1;
}//uint16_t getCoilVal(uint16_t addr,uint16_t *data)

 
uint16_t getInputStatusVal(uint16_t addr,uint8_t *tempData)
{                       
//    uint16_t result = 0;
    uint16_t tempAddr;
    unsigned char *pRegPtr = 0;  
    unsigned int RegAddr = 0;
    unsigned int RegBit  = 0;   

    tempAddr = addr & 0xFF;

    

    RegAddr = tempAddr/8;
    RegBit  = tempAddr%8;
    pRegPtr = &IED.InputStatus.cInputReg8;
    pRegPtr+= RegAddr;

    if(*pRegPtr&(1<<RegBit))
        *tempData      = 1;
    else
        *tempData     = 0;    
    return 1;
}//uint16_t getCoilVal(uint16_t addr,uint16_t *data)

//设定线圈状态 返回0表示成功
uint16_t setCoilVal(uint16_t addr,uint8_t tempData)
{
    uint16_t i;
    uint16_t result = 0;
    uint16_t tempAddr;
    uint16_t tempvar;
    unsigned char *pCoilPtr = 0;

    unsigned int CoilAddr = 0;
    unsigned int CoilBit  = 0;  



    tempAddr = addr & 0xFF;

    tempAddr = tempAddr%16;  //只有16位

    CoilAddr = tempAddr/8;
    CoilBit  = tempAddr%8;
    
    IED.OutputCoil.iCoil16 = GPIOD->ODR;     //读回来防止点击气泵和搅拌影响电机
    pCoilPtr = &IED.OutputCoil.iCoil8; 
    pCoilPtr+= CoilAddr;
    if    (tempData) //如果为1
    {
        *pCoilPtr|=1<<CoilBit;        
        __NOP();    
    }
    else
    {
        *pCoilPtr&=~(1<<CoilBit);
        __NOP();    
    }
    
    tempvar = (unsigned short)*pCoilPtr;
     GPIOD->ODR = IED.OutputCoil.iCoil16 ;                                         
    return result;
}//uint16_t setCoilVal(uint16_t addr,uint16_t data)




uint16_t getInputRegisterVal(uint16_t addr,uint16_t *tempData) 
{
    uint16_t result = 0;
    uint16_t tempAddr;        
    uint16_t *ptr  =  &IED.InputStatus.cInputReg16 ; 
       *ptr            =  GPIOF->IDR;
    tempAddr = addr & 0xfff;       
    *tempData= ptr[tempAddr];
    return result;
}
//取寄存器值 返回0表示成功
uint16_t getRegisterVal(uint16_t addr,uint16_t *tempData)
{

    uint16_t result = 0;
    uint16_t tempAddr; 
    tempAddr = addr & 0xfff;       
    *tempData=temp[tempAddr];
    return result;
}//uint16_t getRegisterVal(uint16_t addr,uint16_t &data)
 
/******************************                              
modbus RTU 的C51程序
通信波特率 9600 8位数据 1位停止位 偶校验 485通位接口
单片机控制板地址 localAddr(变量)
通信可设置数据的地址：
字地址 0 - 255 (只取16位的低8位)
位地址 0 - 255 (只取16位的低8位)
*******************************/
                                                            
void TaskCommTimer(void)
{
    
    if(receTimeOut>0)
    {    
        --receTimeOut;                                
        if(receTimeOut==0 && receCount>0)   //判断通讯接收是否超时
        {         
            checkComm0Modbus();  
            receCount = 0;      //将接收地址偏移寄存器清零       
        }            
    }
    if(TxTimeOut>0)                            //延时启动发送任务
    {
        --TxTimeOut;
        if(TxTimeOut==0)
        { 
            sendPosi = 0;
            Send();                  
        }
    }
                
}

//开始发送                                                          
void beginSend(void)
{
    b485Rec  = 0;    //设为发送
    TxTimeOut = 6;
}//void beginSend(void)

void Send(void)
{ 
    USART_ITConfig(USART1, USART_IT_TXE, ENABLE); //运行发送中断   
}
//设置寄存器值 返回0表示成功
uint16_t setRegisterVal(uint16_t addr,uint16_t tempData)
{
    uint16_t result = 0;
    uint16_t tempAddr;      
    disable();
    tempAddr = addr & 0xfff;    
    temp[tempAddr]=tempData; 
    enable();
    return result;
}
 

                                        
void Uart0PDMASend(void)
{
/*
    b485Send = 1;    //设为发送
    sendPosi = 0;
                                                      
            
    DMA_InitTypeDef DMA_InitStructure;
                                                                           
      DMA_DeInit(USART1_Tx_DMA_Channel);  
      DMA_InitStructure.DMA_PeripheralBaseAddr = USART1_BASE;
      DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)sendBuf;
      DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
      DMA_InitStructure.DMA_BufferSize = sendCount;
      DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
      DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
      DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
      DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
      DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
      DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
      DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
      DMA_Init(USART1_Tx_DMA_Channel, &DMA_InitStructure);
                                                                 
                                                                                 
    USART_DMACmd(USART1, USART_DMAReq_Tx, ENABLE); 
                                                                            
    DMA_ITConfig(USART1_Tx_DMA_Channel,  DMA_IT_TC|DMA_IT_TE ,ENABLE); 
      DMA_Cmd(USART1_Tx_DMA_Channel, ENABLE);     
    */         
} 



void InitUART0(void)
{       
    NVIC_InitTypeDef NVIC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure; 
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO, ENABLE);
   //端口初始化
    // Configure USART1 Tx as alternate function open-drain 
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;            
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
      GPIO_Init(GPIOA, &GPIO_InitStructure);  
        
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
      GPIO_Init(GPIOA, &GPIO_InitStructure);

    //串口初始化
    USART_InitStructure.USART_BaudRate = 9600;
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;
      USART_InitStructure.USART_StopBits = USART_StopBits_1;
      USART_InitStructure.USART_Parity = USART_Parity_No;
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_NONE;//;
      USART_InitStructure.USART_Mode = USART_Mode_Rx| USART_Mode_Tx;
    USART_Init(USART1, &USART_InitStructure);
    

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
    
    NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;           //DMA完成.错误中断
    NVIC_Init(&NVIC_InitStructure);      

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; 
    NVIC_Init(&NVIC_InitStructure);    

    //USART_ITConfig(USART1,USART_IT_TXE, ENABLE);
    //USART_ITConfig(USART1,USART_IT_TC, ENABLE);
    USART_ITConfig(USART1,USART_IT_RXNE, ENABLE);
    
    USART_Cmd(USART1, ENABLE);     
    
    b485Rec = 1;    // Receive;          
}
                                             

void USART1_IRQHandler(void)
{                
        //CTS  LBD  | TXE  TC   RXNE  IDLE   | ORE   NE   FE   PE                                     
      //只要进了中断,状态字就被清除.     
      if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
      {
            receTimeOut = 3;     //通讯超时值 
            receBuf[receCount++]=  USART1->DR;
      }
                                                                     
      if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
      {       
        if(sendPosi < sendCount)
        {    
            USART1->DR =   sendBuf[sendPosi];                    
            sendPosi++;                
        }
        else
        {                                    
            USART_ITConfig(USART1, USART_IT_TXE, DISABLE);      
            USART_ITConfig(USART1, USART_IT_TC, ENABLE);         
            
        }
      }
       
      if(USART_GetITStatus(USART1, USART_IT_TC) != RESET)
      {
            USART_ITConfig(USART1, USART_IT_TC, DISABLE); 
            b485Rec = 1;    // Receive; 
      }
             
}

                                    

 
void DMA1_Channel2_IRQHandler()
{
    DMA_ClearFlag(DMA1_FLAG_GL2|DMA1_FLAG_TC2);
    b485Rec  = 1;    // Receive;    
}