eView触摸屏+51单片机Modbus通信 (amobbs.com 阿莫电子技术论坛) -

gzhmcu 发表于 2012-11-9 23:22:40

eView触摸屏+51单片机Modbus通信

本帖最后由 gzhmcu 于 2012-11-9 23:24 编辑

触摸屏不传了，大家都懂！
//在触摸屏上作个位开关，单片机系统用LED指示
//在弹片机的硬件系统中用拨码开关来模拟数据输入，在EVIEW上显示
//本程序实现位的读写和字的读写，为一对一通讯，EVIEW为主机
#include<reg52.h>
#include<absacc.h>
#include<intrins.h>
#include<ctype.h>

/* 这些句集定义简单的数据类型 */
#define uchar unsigned char
#define ulint unsigned long
#define uintunsigned int
sbit SCLK_AD9835= P1^0;
sbit SDATA_AD9835 = P1^1;
sbit FSYNC_AD9835 = P1^2;
union{
      unsigned long l_Data;
      unsigned char byt_Data;
}F_Reg0, F_Reg1;
unsigned longF_V alue,Ftemp;
void Write_AD9835( unsigned char Write_Address, unsigned char Write_Data );
void Fmain( void );
/* 这些句集为 Mudbus 功能码 */
#define ReadCoilSta 0x01    // 0X read coil function 读取线圈状态取得一组逻辑线圈的当前状态
#define ForceSingleCoil 0x05 // 0X force single coil function 强置单线圈强置一个逻辑线圈的通断状态
#define ReadHoldReg 0x03    // 4X read hold register 读取输入寄存器在一个或多个输入寄存器中取得当前的二进制值
#define PresetMulReg 0x10    // 4X write multi register 预置多寄存器把具体的二进制值装入一串连续的保持寄存器

/*这些句集描述 communiction 信息的索引从开始到结束*/
#define CommIndexSlaveID 0 // macro for slave ID
#define CommIndexFunction 1 // macro for function code

#define CommIndexStartAdrHi 2// macro for data high adr
#define CommIndexStartAdrLo 3// macro for data low adr

#define CommIndexNoPointHi 4 // macro for high quantity datas
#define CommIndexNoPointLo 5 // macro for low quantity datas

/* These macro describe recieve message lenght of different function code */
/* But not include data lenght ,the data is master write to slave */
/* because we don't know the data lenght prior, it depend on ComBuf value */
#define ReadCoilStaIndexEnd 7 // 0~7,0x01,0X
#define ForceSingleCoilIndexEnd 7 // 0~7,0x05,0X

#define ReadHoldRegIndexEnd 7 // 0~7,0x03,4X
#define PresetMulRegIndexEnd 8 // 0~8,0x10,4X

/* these macro describe send or recieve allowed */
#define SEND 1    // send allowed
#define RECIEVE 0 // recieve allowed

#define SlaveID 0x01 //本机ID

#define SendRecieveDelay 50 //超时时间

#define MaxDataLen 30// preset CommBuf array Max lenght
#define MaxRegLen 20 // preset SlaveOutputBuf Max lenght

/* variable for modbus is following */
bit dataRecFinishF;//接收完成标志 1:完成 0:未完成

uchardataCommIndex;
uchardataCommIndexEnd;
ucharidata CommBuf; //CommBuf
ucharidata SlaveOutputBuf; // Hight 8 bit of word is front,Low 8 bit is back
ucharidata SlaveInputBuf={1,2,3,6,5,4,7};//在modbus中两个8位为一个16位数传回主机
/* exp data define */
#define SlaveAdr XBYTE
sbit LED0=P1^0;
uchar idata ForceCoilBuf;
uchar count=0;
uchar forceval=0x00;
//bit forcesendF=0;
uchar Rdhgaddr=0;
uchar Rdhgcount=0;
uchar Pmraddr=0;
uchar Pmrcount=0;
uchar FoCoAddr=0;
uchar FoCoVal=0;
uchar RdcAddr=0;
uchar RdcByte=0;

/* Table Of CRC Values for high-order byte */

uchar codeauchCRCHi[] = {
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
} ;

/* Table of CRC values for low-order byte */

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
} ;

uint crc16(uchar *puchMsg,uchar usDataLen) // puchMsg message to calculate CRC upon
{                                     // usDataLen quantity of bytes in message
uchar uchCRCHi = 0xFF ;// high byte of CRC initialized
uchar uchCRCLo = 0xFF ;// low byte of CRC initialized
uintuIndex;       // will index into CRC lookup table
while (usDataLen--)          // Pass through message buffer
{
   uIndex = uchCRCHi ^ *puchMsg++ ; // calculate the CRC
   uchCRCHi = uchCRCLo ^ auchCRCHi ;
   uchCRCLo = auchCRCLo ;
}
return (((uint)(uchCRCLo) << 8) | uchCRCHi) ;
}

/*------------- init code is following ----------------*/

void initSFR(void) //计时器初始化
{
TH1=0xfa;
TL1=0xfa;       // botelv set 9600 bps/s
TMOD=0x21;    // T1 8bit timer for uart band rate, T0 16bit timer
PCON=PCON | 0x80; // band rate is 2 times
SCON=0x50;    // uart mode is 01,start bit + 8 bit data +stop bit : peer to peer communication
PS=1;          // uart intrrupt is hightest
TR1=1;          // start T1
ES=1;          // serially interrupt allow
EA=1;          // chief interrupt allow
}

void initvar(void)
{
uchar i;
for (i=0;i<=250;i++)
_nop_();
T0=RECIEVE;
RecFinishF=0;
CommIndex=0;
CommIndexEnd=0xff;// First enlarge recieve lenght
for (i=0;i<MaxRegLen;i++)
SlaveOutputBuf=SlaveAdr;
}

void init(void)
{
initSFR();
initvar();
}

void AnalyzeRecieve(void)
{
uint crc16tem;
uchar i,j,temp,k;
if (CommBuf==SlaveID)// The slave ID is matched ;SlaveID=0x01，CommBuf
{
   crc16tem=crc16(CommBuf,CommIndex-1); // calculate CRC check, erase two CRC byte
   if (crc16tem==(((uint)(CommBuf) << 8) | CommBuf))
      {                               // crc16 check is OK
         switch (CommBuf)
         {
            case ReadCoilSta:
               CommBuf=SlaveID;       // 0
               CommBuf=ReadCoilSta; // 1
               CommBuf=(CommBuf / 0x08);// 0x16 bit
                     RdcAddr=CommBuf;
                     RdcByte=CommBuf;
               for (i=0;i<RdcByte;i++)// sim inputval for test
                  k=RdcByte*8+RdcAddr+8;
                  {for(j=k;j>k-8;j--)
                  if(j<k)
                  temp<<=1;

                  temp=temp+ForceCoilBuf;
                     //FoCoAddr++;
                  SlaveOutputBuf=temp;
                  }
               i=CommBuf+3;
               for(CommIndex=3;CommIndex<i;CommIndex++)       // send data Reg to Master
               CommBuf=SlaveOutputBuf; // hight 8 bit is first send
               crc16tem=crc16(CommBuf,CommIndex);             // then send low 8 bit data
               CommBuf=(uchar)(crc16tem & 0x00ff);// send crccheck low 8 bit is front
               CommBuf=(uchar)(crc16tem>>8);       // then send hight 8 bit
               CommIndexEnd=CommIndex;
               CommIndex=0;
               SBUF=CommBuf;
               break;
            case ForceSingleCoil:

               FoCoAddr=CommBuf;
               FoCoVal=CommBuf;
               if (FoCoVal==0xff)
                  ForceCoilBuf=1;
                  else
                     ForceCoilBuf=0;
               CommBuf=SlaveID;    // 0
               CommBuf=ForceSingleCoil; // 1
               CommIndex=2;
               CommBuf=CommBuf; // 2
               CommBuf=CommBuf; // 3
               CommBuf=CommBuf;// 4
               CommBuf=CommBuf;// 5
               crc16tem=crc16(CommBuf,CommIndex);             // then send low 8 bit data
               CommBuf=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front
               CommBuf=(uchar)(crc16tem>>8);       // then send hight 8 bit
               CommIndexEnd=CommIndex;
               CommIndex=0;
               SBUF=CommBuf;
               break;
            case ReadHoldReg:
               CommBuf=SlaveID;       // 0
               CommBuf=ReadHoldReg; // 1
               CommBuf=CommBuf*2;// 2 Byte Count
               Rdhgcount=CommBuf;
               Rdhgaddr=CommBuf;
               for (i=0;i<Rdhgcount;i++)// sim inputval for test
               {
                  SlaveOutputBuf=SlaveInputBuf;
                  Rdhgaddr++;
                  }
               j=CommBuf+3;
               for(CommIndex=3;CommIndex<j;CommIndex++)    // send data Reg to Master
                  CommBuf=SlaveOutputBuf; // hight 8 bit is first send
               crc16tem=crc16(CommBuf,CommIndex);          // then send low 8 bit data
               CommBuf=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front
               CommBuf=(uchar)(crc16tem>>8);       // then send hight 8 bit
               CommIndexEnd=CommIndex;
               CommIndex=0;
               SBUF=CommBuf;
               break;
            case PresetMulReg:
               Pmraddr=CommBuf;
               Pmrcount=CommBuf*2;
               // j=CommBuf*2;
               for (i=0;i<Pmrcount;i++)
               {
                  SlaveInputBuf=CommBuf;// get data that master send start 7th byte
                  Pmraddr++;
               }
               CommBuf=SlaveID;    // 0
               CommBuf=PresetMulReg; // 1
               CommIndex=2;
               CommBuf=CommBuf; // 2
               CommBuf=CommBuf; // 3
               CommBuf=CommBuf;// 4
               CommBuf=CommBuf;// 5
               crc16tem=crc16(CommBuf,CommIndex);             // then send low 8 bit data
               CommBuf=(uchar)(crc16tem & 0x00ff); // send crccheck low 8 bit is front
               CommBuf=(uchar)(crc16tem>>8);       // then send hight 8 bit
               CommIndexEnd=CommIndex;
               CommIndex=0;
               SBUF=CommBuf;
               break;
            default:
               for (i=0;i<=80;i++)// delay // error recieve again
                  _nop_();
               CommIndex=0;
               T0=RECIEVE;
               break;
         }
      }
      else
      {
         for (i=0;i<=80;i++)// delay
            _nop_();
         CommIndex=0;
         T0=RECIEVE;
      }
}
}

/*------------- intr code is following ----------------*/

void slavecomm(void) interrupt 4 using 2
{
uint i;
ES=0;
if(TI)
{
TI=0;
if (CommIndex<=CommIndexEnd)
   {
      SBUF=CommBuf;
   }
   else
   {
//    if (forcesendF)
//       _nop_();
      for (i=0;i<=SendRecieveDelay;i++)// delay
         _nop_();
      CommIndex=0;
      T0=RECIEVE;
   }
}
if(RI)
{
RI=0;
if (CommIndex<CommIndexEnd)//CommIndex less than recieve lenght
   {
      CommBuf=SBUF;
      if (CommIndex==CommIndexFunction)
      {
         switch (CommBuf)
               {
               case ReadCoilSta:
                        CommIndexEnd=7;
                        break;
               case ForceSingleCoil:
                        CommIndexEnd=8;
                        break;
               case ReadHoldReg:
                        CommIndexEnd=ReadHoldRegIndexEnd;
                        break;
               case PresetMulReg:
                        CommIndexEnd=10 ;
                        break;
               default:
                        break;
               }
      }
      CommIndex++;
   }
   else// recieve finishedCommIndex==CommIndexEnd//超时
   {
      CommBuf=SBUF;
      RecFinishF=1;
      for (i=0;i<=SendRecieveDelay;i++)// delay
         _nop_();
      T0=SEND;
   }
}
ES=1;
}

/*------------------ main code following -----------------*/

void main(void)
{
uint data i;
init();
for(i=0;i<30;i++)
{CommBuf=0x00;//对缓冲区清零
}
while(1)
{

   for(i=0;i<=9;i++)
      _nop_();
   if (RecFinishF)
      {
         AnalyzeRecieve();
         RecFinishF=0;

         Ftemp=SlaveInputBuf<<8;
         Ftemp=Ftemp+SlaveInputBuf;
      // if(F_Value!=Ftemp)
         // Fmain();
         //while(1);
      }

}
}

/*--对AD9835最基本的写操作函数--*/
void Write_AD9835( unsigned char Write_Address, unsigned char Write_Data ){
   unsigned char i;

   FSYNC_AD9835 = 1;
   SCLK_AD9835 = 1;
   FSYNC_AD9835 = 0;
   for( i = 0; i < 8; i++ ){
         if( (Write_Address & 0x80) == 0x80 ){ SDATA_AD9835 = 1; }
         else                            { SDATA_AD9835 = 0; }
         SCLK_AD9835 = 1;
         SCLK_AD9835 = 0;
         Write_Address <<= 1;
   }
   for( i = 0; i < 8; i++ ){
         if( (Write_Data & 0x80) == 0x80 ){ SDATA_AD9835 = 1; }
         else                         { SDATA_AD9835 = 0; }
         SCLK_AD9835 = 1;
         SCLK_AD9835 = 0;
         Write_Data <<= 1;
   }
   FSYNC_AD9835 = 1;
   SDATA_AD9835 = 0;
   SCLK_AD9835 = 1;
}

/****************************************************************************************/
/*--主控函数--*/
void Fmain( void ){

   unsigned long ahal;
   F_Value = Ftemp;
         FSYNC_AD9835 = 1;
         SCLK_AD9835 = 1;
   Write_AD9835( 0xF8, 0x00 ); Write_AD9835( 0x80,0x00 );
   ahal = (long)((float)F_Value*107.374182375);// 85.8993459);
      F_Reg0.byt_Data=ahal& 0x000000FF;
      F_Reg0.byt_Data=(ahal& 0x0000FF00)>> 8;
      F_Reg0.byt_Data=(ahal& 0x00FF0000)>>16;
      F_Reg0.byt_Data=(ahal& 0xFF000000)>>24;
      Write_AD9835( 0x33, F_Reg0.byt_Data ); Write_AD9835( 0x22, F_Reg0.byt_Data );
      Write_AD9835( 0x31, F_Reg0.byt_Data ); Write_AD9835( 0x20, F_Reg0.byt_Data );
      Write_AD9835( 0x37, F_Reg0.byt_Data ); Write_AD9835( 0x26, F_Reg0.byt_Data );
      Write_AD9835( 0x35, F_Reg0.byt_Data ); Write_AD9835( 0x24, F_Reg0.byt_Data );

      Write_AD9835( 0x19, 0x00 ); Write_AD9835( 0x08, 0x00 );
      Write_AD9835( 0x1B, 0x00 ); Write_AD9835( 0x0A, 0x00 );
      Write_AD9835( 0x1D, 0x00 ); Write_AD9835( 0x0C, 0x50 );
      Write_AD9835( 0x1F, 0x00 ); Write_AD9835( 0x0E, 0x00 );

      Write_AD9835( 0xC0, 0x00 );


}

IT农民工 发表于 2013-5-14 09:21:27

{:lol:}不错，顶一个

tuowai 发表于 2013-7-14 14:21:28

好资料，谢谢！

liujing8862770 发表于 2013-7-15 15:48:09

正需要！顶一个！

ppffs 发表于 2013-8-20 20:18:35

谢谢楼主分享，最近一直在找这方面资料

jetli 发表于 2013-8-20 20:51:10

{:sweat:} 屏，不懂啊，麻烦lz上传，，

，听说 eView 步科出了款399元的 7寸HMI市场洗牌啊，，，，{:lol:}

lrzxc 发表于 2013-8-20 21:03:37

jetli 发表于 2013-8-20 20:51 static/image/common/back.gif
屏，不懂啊，麻烦lz上传，，

，听说 eView 步科出了款399元的 7寸HMI市场洗牌啊，，， ...

{:lol:} ,楼上的消息不错，刚才某宝搜索了下，确实如此还包邮

GZLJZ 发表于 2013-8-20 21:34:59

触摸屏不懂呀，能不能传上来呀！

fayuanye 发表于 2013-8-21 21:36:38

xxfx谢谢分享！！

GZLJZ 发表于 2013-8-22 10:12:58

LZ您好，请教你eView触摸屏能自己定义通信协议吗？Modbus通信也太复杂了，关键是费RAM,51只有128个直接寻址RAM,你单测试这个Modbus通信就用了100多个RAM该叫51怎么工作呀

gzhmcu 发表于 2013-8-25 16:16:31

GZLJZ 发表于 2013-8-22 10:12 static/image/common/back.gif
LZ您好，请教你eView触摸屏能自己定义通信协议吗？Modbus通信也太复杂了，关键是费RAM,51只有128个直接寻址 ...

有一种简单的协议，不过不用定义了，他们定义好了{:smile:}

gzhmcu 发表于 2013-8-27 10:12:13

jswd0810 发表于 2013-8-25 20:16 static/image/common/back.gif
还没有用过modbus的协议，学习了，谢谢楼主共享！

{:handshake:} {:handshake:}

花花世界大水牛 发表于 2014-1-2 16:12:44

楼主，最近我在用eview的ET100用起来感觉好费劲，被各种地址高糊涂了，3X 4X地址哪里设置都没找到，请问你用的是那个型号

花花世界大水牛 发表于 2014-1-2 16:29:42

楼主，在HMI软件中，PLC选择什么类型，Modbus RTU Slave?

gzhmcu 发表于 2014-1-3 08:13:04

花花世界大水牛发表于 2014-1-2 16:29
楼主，在HMI软件中，PLC选择什么类型，Modbus RTU Slave?

如果HMI没有标准Modbus,那么您就选莫迪康modbus rtu

花花世界大水牛 发表于 2014-1-6 09:20:04

gzhmcu 发表于 2014-1-3 08:13
如果HMI没有标准Modbus,那么您就选莫迪康modbus rtu

好的，谢谢。

bingchacoool 发表于 2015-1-7 09:10:28

楼主，你这个51是工作在从模式吧，怎么才能工作在主模式？

tjx0512 发表于 2015-11-8 23:33:28

不错，赞一个，先下来学习学习！

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eView触摸屏+51单片机Modbus通信