📄 51-modbus.txt
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#include "REG51.h"
#include <intrins.h>
#define uchar unsigned char
#define length 8
unsigned char sum=0;
unsigned int crc;
unsigned char crc_tmp=0;
typedef unsigned char uint8;
typedef unsigned int uint16;
typedef unsigned long uint32;
uint16 crc16(uint8 *puchMsg, uint16 usDataLen);
sbit Send_Rcv=P3^2;
sbit bdog = P3^4;
sbit power_led = P3^5;
sbit rx_led = P3^6;
sbit tx_led = P3^7;
sbit b7=P0^7;//baud
bit state=0;
int i=0,j=0;
unsigned char receTimeOut;
uchar run_inverter[10];
uchar rec_temp[10];
uchar thedata;
void initial();
void initTimer0(void);//1ms
unsigned char delay(unsigned char j);
unsigned char readkey(void);
void watchdog(void)
{
int a1;
bdog=0;
for(a1=0;a1<900;a1++)
;
bdog=1;
}
//////////////////////////////////////
//////////////////////////////////////
void main()
{
power_led=0;
rx_led=1;
tx_led=1;
P1=0xff;
P2=0xff;
/* run_inverter[0]=0x01;
run_inverter[1]=0x03;
run_inverter[2]=0x02;
run_inverter[5]=0x0a;
run_inverter[6]=0x0a;*/
initial();
initTimer0();
Send_Rcv=0;
while(1)
{
watchdog();
if(b7==1)PCON=0x00; else PCON=0x80;
delay(10);
if(state==1)
{
state=0;
Send_Rcv=1;
delay(5);
TI=0;
SBUF=run_inverter[0]; //////////////////////////////
}
if(rx_led==0){rx_led=1;}
if(tx_led==0){tx_led=1;}
}
}
void Send_INT() interrupt 4
{
if(TI) /////////////////////////////////////
{
if(i<6)
{
TI=0;
i++ ;
SBUF=run_inverter;
rx_led=0;
}
else
{
Send_Rcv=0;
j=0;
}
TI=0;
}
else if(RI)
{
RI = 0;
receTimeOut = 10;
rec_temp[j] = SBUF;//接收到的字节个数
j++; //接收地址偏移寄存器加1
tx_led =0;
}
}
//////////////////////////////////////
//////////////////////////////////////
void initial()
{
IE=0x90; //EA=1,ES=1
SCON=0x50; //mode 1 ren=1
TMOD=0x20; //t1 mode 2
//PCON=0x00; // smod=0
if(b7==1)PCON=0x00; else PCON=0x80;
TH1=0xFA;
TL1=0xFA;
TR1=1;
//PS=1;
}
unsigned char delay(unsigned char j)
{
unsigned char k,l;
for(l=0;l<=j;l++ )
for(k=0;k<=10;k++);
return 0;
}
///////////////////////////////////
void initTimer0(void)//1ms
{
TMOD=TMOD&0xf0;
TMOD=TMOD|0x01;
TH0=0xF8;
TL0=0xCC;
TR0=1;
ET0=1;
}
void timer0(void) interrupt 1
//z这个判断不好的，在调试的时候先暂时去掉
{
TH0=0xF8;
TL0=0xCC;
if(receTimeOut>0)
{
receTimeOut--;
if(receTimeOut==0 && j>0) //判断通讯接收是否超时
{
if(j>7)
{
sum=readkey();
crc=crc16(rec_temp,6);
if(rec_temp[0]==sum&&rec_temp[1]==0x03&&(crc
== (rec_temp[7]|(crc_tmp|rec_temp[6]<<8))))
{ state=1; i=0;
run_inverter[0]=rec_temp[0];
run_inverter[1]=rec_temp[1];
run_inverter[2]=0x02;
// run_inverter[3]=P1;//////
// run_inverter[4]=P2;/////
run_inverter[3]=~P2;
run_inverter[4]=~P1;
crc=crc16(run_inverter,5);
run_inverter[5]=crc>>8;
run_inverter[6]=crc&0xff;
} //接受完
}
j = 0; //将接收地址偏移寄存器清零
}
}
}
//////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////
////////////////////////
//////////////////////////
//////////////////////////
#include "REG51.h"
sbit b0=P0^0;
sbit b1=P0^1;
sbit b2=P0^2;
sbit b3=P0^3;
sbit b4=P0^4;
sbit b5=P0^5;
sbit b6=P0^6;
//sbit b7=P0^7;
unsigned char c[10];
typedef unsigned char uint8;
typedef unsigned int uint16;
typedef unsigned long uint32;
/* CRC 高位字节值表 */
const uint8 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低位字节值表*/
const uint8 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
} ;
uint16 crc16(uint8 *puchMsg, uint16 usDataLen)
{
uint8 uchCRCHi = 0xFF ; //* 高CRC字节初始化
uint8 uchCRCLo = 0xFF ; //* 低CRC 字节初始化
uint32 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) ;
}
unsigned char readkey(void)
{
unsigned char qq=0;
if(b0==1)c[0]=0; else c[0]=1;
if(b1==1)c[1]=0; else c[1]=2;
if(b2==1)c[2]=0; else c[2]=4;
if(b3==1)c[3]=0; else c[3]=8;
if(b4==1)c[4]=0; else c[4]=16;
if(b5==1)c[5]=0; else c[5]=32;
qq=c[0]+c[1]+c[2]+c[3]+c[4]+c[5];
return qq;
}⌨️ 快捷键说明
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