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#include "modbus.h"
#include "resister.h"
/******************數據舉例，移植數據定義修改區，resister.h也需要修改***********************************/
uint ROdat[3]={1,123,456}; //3個只讀整型
uint RWdat[3]={1,123,456}; //3個可讀可寫整型
float temp=23.4; //一個浮點型
long adc=789654; //一個long型
bit ROstatus0=0; //只讀線圈
bit ROstatus1=1; //只讀線圈
bit RWstatus0=0; //可讀可寫線圈
bit RWstatus1=1; //可讀可寫線圈
/********************************************************************
modbus RTU 的C51程序
單片機AT89C51 11.0592MHZ
通信波特率 9600 8位數據 1位停止位 485通位接口
單片機控制板地址 localAddr(變量)
0x01 0x03 0x00 0x00 0x01 0x84 0x0a
**********************************************************************/
uchar LocalAddr = 0x01; //單片機控制板的地址
/***********************************************/
union uf
{
uint x[2];
float y;
}ftemp;
union ul
{
uint x[2];
long y;
}ltemp;
uchar receTimeOut; //接收超時
uchar sendCount; //發送字節個數
uchar receCount; //接收到的字節個數
uchar receBuf[50];
uchar sendBuf[50];
bit bt1ms; //定時標志位
/* CRC 高位字節值表 */
uchar code 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低位字節值表*/
uchar code 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
} ;
//-------------------------------定時器0 1ms 中斷 -------------------------
void timer0_IntProc() interrupt 1
{
TL0 = 0x66;
TH0 = 0xFC;
bt1ms = 1;
}
void presetSingleRegister(void);
uint setCoilVal(uint addr,uint tempData);
uint getCoilVal(uint addr,uint *tempData);
uint getRegisterVal(uint addr,uint *tempData);
uint setRegisterVal(uint addr,uint tempData);
//--------------------------------串行中斷程序---------------------------
void comm_IntProc() interrupt 4
{
if(RI)
{
RI = 0;
receTimeOut = 10; //通訊超時值這個地方很重要 10ms
receBuf[receCount] = SBUF;
receCount++; //接收地址偏移寄存器加1
}
if(TI)
TI=0;
}
//------------------------------------定時處理--------------------------------
void timeProc(void)
{
if(bt1ms)
{
bt1ms = 0;
if(receTimeOut>0)
{
receTimeOut--;
if(receTimeOut==0 && receCount>0) //判斷通訊接收是否超時
{
b485Send = 0; //將485置為接收狀態
receCount = 0;// //將接收地址偏移寄存器清零
}
}
}
}
//-----------------------------初始化中斷------------------------------------
void InitUartAndTimer0(void)
{
TMOD= 0x21; //T0用于定時，T1用于波特
TL0 = 0x66;
TH0 = 0xFC;
TR0 = 1;
ET0 = 1; //開中斷T0
//-----------------------------------------------
SCON=0x50;
TH1=0xfd;
TL1=0xfd;
TR1=1;
EA=1;
ES=1;
TI=0;
b485Send = 0; //處于接收
}
//--------------------------初始化-----------------------------
void initProg(void)
{
InitUartAndTimer0();
}
/***************************CRC校驗碼生成函數 ********************************/
uint crc16(uchar *puchMsg, uint usDataLen)
{
uchar uchCRCHi = 0xFF ; /* 高CRC字節初始化 */
uchar uchCRCLo = 0xFF ; /* 低CRC 字節初始化 */
uint uIndex ; /* CRC循環中的索引 */
while (usDataLen--) /* 傳輸消息緩沖區 */
{
uIndex = uchCRCHi ^ *puchMsg++ ; /* 計算CRC */
uchCRCHi = uchCRCLo ^ auchCRCHi[uIndex] ;
uchCRCLo = auchCRCLo[uIndex] ;
}
return (uchCRCLo << 8 | uchCRCHi) ;
}
void uartsends(uchar buff[],uchar len)
{
uchar i;
for(i=0;i<len;i++)
{
SBUF=buff[i];
while(!TI);
TI=0;
}
}
/*******************************串口發送函數 ********************************/
void Begin_send(void)
{
b485Send = 1; //處于發送
uartsends(sendBuf,sendCount);
b485Send = 0; //發送完后將485置于接收狀態
receCount = 0; //清接收地址偏移寄存器
}
//fuction:01 讀單個或多個線圈狀態
void readCoils(void)
{
uint addr;
uint tempAddr;
uint byteCount;
uint bitCount;
uint crcData;
uint position;
uint i,k;
uint tempData;
uchar exit = 0;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr;
bitCount = (receBuf[4]<<8) + receBuf[5]; //讀取的位個數
byteCount = bitCount / 8; //字節個數
if(bitCount%8 != 0)
byteCount++;
for(k=0;k<byteCount;k++)//字節位置
{
position = k + 3;
sendBuf[position] = 0;
for(i=0;i<8;i++)
{
getCoilVal(tempAddr,&tempData);
sendBuf[position] |= tempData << i;
tempAddr++;
if(tempAddr >= addr+bitCount)//讀完
{
exit = 1;
break;
}
}
if(exit == 1)
break;
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 0x01;
sendBuf[2] = byteCount;
byteCount += 3;
crcData = crc16(sendBuf,byteCount);
sendBuf[byteCount] = crcData & 0xff;
byteCount++;
sendBuf[byteCount] = crcData >> 8;
sendCount = byteCount + 1;
Begin_send();
}
//fuction:02 讀取線圈輸入（只讀寄存器）狀態
void readInPutCoils(void)
{
uint addr;
uint tempAddr;
uint byteCount;
uint bitCount;
uint crcData;
uint position;
uint i,k;
uint tempData;
uchar exit = 0;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr +10000; //只讀線圈寄存器偏移地址10000
bitCount = (receBuf[4]<<8) + receBuf[5]; //讀取的位個數
byteCount = bitCount / 8; //字節個數
if(bitCount%8 != 0)
byteCount++;
for(k=0;k<byteCount;k++)//字節位置
{
position = k + 3;
sendBuf[position] = 0;
for(i=0;i<8;i++)
{
getCoilVal(tempAddr,&tempData);
sendBuf[position] |= tempData << i;
tempAddr++;
if(tempAddr >= addr+bitCount)//讀完
{
exit = 1;
break;
}
}
if(exit == 1)
break;
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 0x02;
sendBuf[2] = byteCount;
byteCount += 3;
crcData = crc16(sendBuf,byteCount);
sendBuf[byteCount] = crcData & 0xff;
byteCount++;
sendBuf[byteCount] = crcData >> 8;
sendCount = byteCount + 1;
Begin_send();
}
/********function code : 03，讀取多個寄存器值 ********/
void readRegisters(void)
{
uint addr;
uint tempAddr;
uint crcData;
uint readCount;
uint byteCount;
uint i;
uint tempData = 0;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr+40000; //+40000,保持寄存器偏移地址
readCount = (receBuf[4]<<8) + receBuf[5]; //要讀的個數 ,整型
byteCount = readCount * 2; //每個寄存器內容占高，低兩個字節
for(i=0;i<byteCount;i+=2,tempAddr++)
{
getRegisterVal(tempAddr,&tempData);
sendBuf[i+3] = tempData >> 8;
sendBuf[i+4] = tempData & 0xff;
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 3; //function code : 03
sendBuf[2] = byteCount;
byteCount += 3; //加上前面的地址，功能碼，地址共3+byteCount個字節
crcData = crc16(sendBuf,byteCount);
sendBuf[byteCount] = crcData & 0xff; // CRC代碼低位在前
byteCount++;
sendBuf[byteCount] = crcData >> 8 ; //高位在后
sendCount = byteCount + 1; //例如byteCount=49，則sendBuf[]中實際上有49+1個元素待發
Begin_send();
}
//fuction 04:讀取輸入寄存器
void readInPutRegisters(void)
{
uint addr;
uint tempAddr;
uint crcData;
uint readCount;
uint byteCount;
uint i;
uint tempData = 0;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr+30000; //+輸入寄存器偏移地址：30000
readCount = (receBuf[4]<<8) + receBuf[5]; //要讀的個數 ,整型
byteCount = readCount * 2; //每個寄存器內容占高，低兩個字節
for(i=0;i<byteCount;i+=2,tempAddr++)
{
getRegisterVal(tempAddr,&tempData);
sendBuf[i+3] = tempData >> 8;
sendBuf[i+4] = tempData & 0xff;
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 4; //function code : 04
sendBuf[2] = byteCount;
byteCount += 3; //加上前面的地址，功能碼，地址共3+byteCount個字節
crcData = crc16(sendBuf,byteCount);
sendBuf[byteCount] = crcData & 0xff; // CRC代碼低位在前
byteCount++;
sendBuf[byteCount] = crcData >> 8 ; //高位在后
sendCount = byteCount + 1; //例如byteCount=49，則sendBuf[]中實際上有49+1個元素待發
Begin_send();
}
//fuction:05 ,強制單個線圈
void forceSingleCoil(void)
{
uint addr;
uint tempAddr;
uint tempData;
uint onOff;
uchar i;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr;
onOff = (receBuf[4]<<8) + receBuf[5];
if(onOff == 0xff00)
{
tempData = 1;//設為ON
}
else if(onOff == 0x0000)//設為OFF
{
tempData = 0;
}
setCoilVal(tempAddr,tempData);
for(i=0;i<receCount;i++)
{
sendBuf[i] = receBuf[i];
}
sendCount = receCount;
Begin_send();
}
/****************fuction:06設置單個寄存器ok**********************************************************/
//主機器發送地址，功能碼，寄存器高位，寄存器低位，數據數高位，數數低位，CRC低位，CRC高位
//例如設置D0 發送， 01 06 00 3F 00 01 */
/*********************************************************************************/
void presetSingleRegister(void)
{
uint addr;
uint tempAddr;
uint tempData;
uint crcData;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = (addr+40000);
tempData = (receBuf[4]<<8) + receBuf[5];
setRegisterVal(tempAddr,tempData);
sendBuf[0] = LocalAddr;
sendBuf[1] = 6; //function code : 16
sendBuf[2] = addr >> 8; //寄存器地址高位
sendBuf[3] = addr & 0xff;//寄存器地址低位
sendBuf[4] =receBuf[4];
sendBuf[5] =receBuf[5];
crcData = crc16(sendBuf,6);//生成CRC校驗碼
sendBuf[6] = crcData & 0xff; //CRC代碼低位在前
sendBuf[7] = crcData >> 8; //高位在后
sendCount = 8;
Begin_send();
}
/********從機響應主機問詢函數，function code : 15，強置多線圈值 *********/
//////////////詢問數據包格式：
///////////////////////// receBuf[0] receBuf[1] receBuf[2] receBuf[3] receBuf[4] receBuf[5] receBuf[6] receBuf[7] receBuf[8] ... receBuf[9] receBuf[10]
//詢問數據格式：receBuf[]={從站地址，功能碼，起始地址高位，起始地址低位，寄存器數高位，寄存器數低位，字節計數，數據高位，數據低位，... 校驗碼低位，校驗碼高位}
/****************************************************************************/
void forceMultipleCoils(void)
{
uint addr;
uint tempAddr;
uint byteCount;
uint bitCount;
uint crcData;
uint tempData;
uint i,k;
uchar exit = 0;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr;
bitCount = (receBuf[4]<<8) + receBuf[5];
byteCount = bitCount / 8; //字節個數
if(bitCount%8 != 0)
byteCount++;
for(k=0;k<byteCount;k++)//字節位置
{
for(i=0;i<8;i++)
{
tempData = (receBuf[k+3] >>i)&0x01;
setCoilVal(tempAddr,tempData);
tempAddr++;
if(tempAddr >= addr+bitCount)//讀完
{
exit = 1;
break;
}
}
if(exit == 1)
break;
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 15; //function code : 16
sendBuf[2] = addr >> 8; //寄存器地址高位
sendBuf[3] = addr & 0xff;//寄存器地址低位
sendBuf[4] = bitCount >> 8;//待設置寄存器數量高位
sendBuf[5] = bitCount & 0xff;//待設置寄存器數量低位
crcData = crc16(sendBuf,6);//生成CRC校驗碼
sendBuf[6] = crcData & 0xff; //CRC代碼低位在前
sendBuf[7] = crcData >> 8; //高位在后
sendCount = 8;
Begin_send();
}
/********從機響應主機問詢函數，function code : 16，設置多個寄存器值 *********/
//////////////詢問數據包格式：
///////////////////////// receBuf[0] receBuf[1] receBuf[2] receBuf[3] receBuf[4] receBuf[5] receBuf[6] receBuf[7] receBuf[8] ... receBuf[9] receBuf[10]
//詢問數據格式：receBuf[]={從站地址，功能碼，起始地址高位，起始地址低位，寄存器數高位，寄存器數低位，字節計數，數據高位，數據低位，... 校驗碼低位，校驗碼高位}
/****************************************************************************/
void presetMultipleRegisters(void)
{
uint addr;
uint tempAddr;
uint setCount;
uint crcData;
uint tempData;
uchar i;
addr = (receBuf[2]<<8) + receBuf[3];
tempAddr = addr+40000;
setCount = (receBuf[4]<<8) + receBuf[5];
for(i=0;i<setCount;i++,tempAddr++)
{
tempData = (receBuf[i*2+7]<<8) + receBuf[i*2+8];//待設置寄存器值
setRegisterVal(tempAddr,tempData);
}
sendBuf[0] = LocalAddr;
sendBuf[1] = 16; //function code : 16
sendBuf[2] = addr >> 8; //寄存器地址高位
sendBuf[3] = addr & 0xff;//寄存器地址低位
sendBuf[4] = setCount >> 8;//待設置寄存器數量高位
sendBuf[5] = setCount & 0xff;//待設置寄存器數量低位
crcData = crc16(sendBuf,6);//生成CRC校驗碼
sendBuf[6] = crcData & 0xff; //CRC代碼低位在前
sendBuf[7] = crcData >> 8; //高位在后
sendCount = 8;
Begin_send();
}
/*************************查詢uart接收的數據包內容函數 **************************/
////函數功能：叢機根據串口接收到的數據包receBuf[1]里面的內容，即function code執行相應的命令
/********************************************************************************/
void checkComm0Modbus(void) //10ms內必須響應接收數據
{
uint crcData;
uint tempData;
uint temp;
if(receCount > 4) //如果接收到數據
{
switch(receBuf[1])
{
case 1: //讀取寄存器(一個或多個)
{
if(receCount >= 8) //從詢問數據包格式可知，receCount應該等于8 ，接收完成一組數據應該關閉接收中斷
{
if(receBuf[0]==LocalAddr) //核對地址
{
crcData = crc16(receBuf,6); //核對校驗碼
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 1)
{
readCoils(); //讀取線圈輸出狀態(一個或多個)
}
receCount = 0;
}
}
break;
}
case 2: //讀取寄存器(一個或多個)
{
if(receCount >= 8) //從詢問數據包格式可知，receCount應該等于8 ，接收完成一組數據應該關閉接收中斷
{
if(receBuf[0]==LocalAddr) //核對地址
{
crcData = crc16(receBuf,6); //核對校驗碼
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 2)
{
readInPutCoils(); //讀取線圈輸入狀態(一個或多個)
}
receCount = 0;
}
}
break;
}
case 3: //讀取寄存器(一個或多個)
{
if(receCount >= 8) //從詢問數據包格式可知，receCount應該等于8 ，接收完成一組數據應該關閉接收中斷
{
if(receBuf[0]==LocalAddr) //核對地址
{
crcData = crc16(receBuf,6); //核對校驗碼
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 3)
{
readRegisters(); //讀取保持寄存器(一個或多個)
}
receCount = 0;
}
}
break;
}
case 4: //讀取寄存器(一個或多個)
{
if(receCount >= 8) //從詢問數據包格式可知，receCount應該等于8 ，接收完成一組數據應該關閉接收中斷
{
if(receBuf[0]==LocalAddr) //核對地址
{
crcData = crc16(receBuf,6); //核對校驗碼
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 4)
{
readInPutRegisters(); //讀取輸入寄存器(一個或多個)
}
receCount = 0;
}
}
break;
}
case 5: //讀取寄存器(一個或多個)
{
if(receCount >= 8) //從詢問數據包格式可知，receCount應該等于8 ，接收完成一組數據應該關閉接收中斷
{
if(receBuf[0]==LocalAddr) //核對地址
{
crcData = crc16(receBuf,6); //核對校驗碼
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 5)
{
forceSingleCoil(); //強置單個線圈狀態
}
receCount = 0;
}
}
break;
}
case 6: if(receCount >= 8)
{
if(receBuf[0]==LocalAddr)
{
crcData = crc16(receBuf,6);
temp=receBuf[7];
temp=(temp<<8)+receBuf[6];
if(crcData == temp)
if(receBuf[1] == 6)
{
presetSingleRegister(); //預置單個保持寄存器
// SaveSetupDataToFlash(); //保存設置數據
}
receCount = 0;
}
}
break;
case 15://設置多個線圈
tempData = receBuf[6];
tempData += 9; //數據個數
if(receCount >= tempData)
{
if(receBuf[0]==LocalAddr )
{
crcData = crc16(receBuf,tempData-2);
if(crcData == (receBuf[tempData-1]<<8)+ receBuf[tempData-2])//更改了？？
{
forceMultipleCoils();
// SaveSetupDataToFlash(); //保存設置數據
}
}
receCount = 0;
}
break;
case 16: //設置多個寄存器
{
tempData = (receBuf[4]<<8) + receBuf[5]; //設置寄存器個數
tempData = tempData * 2; //數據個數= 寄存器*2
tempData += 9; //從詢問數據包格式可知，receCount應該等于9+byteCount
if(receCount >= tempData)
{
if(receBuf[0]==LocalAddr ) //核對地址
{
crcData = crc16(receBuf,tempData-2);
temp=receBuf[tempData-1];
temp=(temp<<8)+receBuf[tempData-2];
if(crcData == temp)
{
presetMultipleRegisters();
//SaveSetupDataToFlash(); //保存設置數據
}
}
receCount = 0;
}
break;
}
default: break;
}
}
}
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