51单片机采集Dht11温湿度传感器的值，在LCD12864液晶显示温湿度，并且可以发送数据到电脑的组态王。modbus协议

/*************************************************************************** 标题： LCD12864程序 实验板：LY51-L2C开发板 作者： 林洋电子-单片机 客服QQ：52927029 邮箱： 52927029@qq.com 说明： 本程序在LCD12864液晶屏显示汉字及字符内容 ******************************************************************************/ //头文件: #include <reg52.h> #include <intrins.h> // typedef unsigned char U8; /* defined for unsigned 8-bits integer variable 无符号8位整型变量 */ typedef unsigned int U16; /* defined for unsigned 16-bits integer variable 无符号16位整型变量 */ typedef unsigned long U32; /* defined for unsigned 32-bits integer variable 无符号32位整型变量 */ #define Data_0_time 4 //----------------------------------------------// //----------------IO口定义区--------------------// //----------------------------------------------// sbit P2_0 = P2^0 ; //----------------------------------------------// //----------------定义区--------------------// //----------------------------------------------// const U8 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 U8 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 } ; U8 U8FLAG,k; U8 U8count,U8temp; U8 U8T_data_H,U8T_data_L,U8RH_data_H,U8RH_data_L,U8checkdata; U8 U8T_data_H_temp,U8T_data_L_temp,U8RH_data_H_temp,U8RH_data_L_temp,U8checkdata_temp; U8 U8comdata; unsigned char wendu_str[2]={"0"}; unsigned char shidu_str[2]={"0"}; /********IO引脚定义***********************************************************/ sbit LCD_RS=P2^4;//定义引脚 sbit LCD_RW=P2^5; sbit LCD_E=P2^6; sbit PSB =P2^7; //PSB脚为12864-12系列的串、并通讯功能切换，使用8位并行接口，PSB=1 sbit key0 =P1^0; sbit key1 =P1^1; sbit key2 =P1^2; sbit key3 =P1^3; sbit key4 =P1^4; sbit key5 =P1^5; sbit key6 =P1^6; sbit key7 =P1^7; sbit beep =P2^1; unsigned char wendu_up = 40,wendu_low = 10; unsigned char shidu_up = 70,shidu_low = 10; /********宏定义***********************************************************/ #define LCD_Data P0 #define Busy 0x80 //用于检测LCD状态字中的Busy标识 //Modbus //modbus *********************** U8 sendBuf[10]={0x00}; U16 Register[10]/*= {11,22,0,0}*/ ; //字址址16 U8 localAddr = 1; //单片机控制板的地址 U8 sendCount; //发送字节个数 U8 sendPosi; //发送位置 U8 Time=0; U16 Temp_Alarm = 0; U16 Wet_Alarm = 0; U16 last_shidu = 0; U16 crc16(U8 *puchMsg, U16 usDataLen); void beginSend(void); void readRegisters(void); U16 getRegisterVal(U16 addr); //取寄存器值 返回 读取值 void initUart(void); /********函数声明*************************************************************/ void WriteDataLCD(unsigned char WDLCD); void WriteCommandLCD(unsigned char WCLCD,BuysC); unsigned char ReadStatusLCD(void); void LCDInit(void); void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData); void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData); void Delay5Ms(void); /********数据定义*************************************************************/ code unsigned char str_num[] = {"0123456789"};//{'0','1','2','3','4','5','6','7','8','9'}; void Delay(U16 j) { U8 i; for(;j>0;j--) { for(i=0;i<27;i++); } } void Delay_10us(void) { U8 i; i--; i--; i--; i--; i--; i--; } void COM(void) { U8 i; for(i=0;i<8;i++) { U8FLAG=2; while((!P2_0)&&U8FLAG++); Delay_10us(); Delay_10us(); Delay_10us(); U8temp=0; if(P2_0)U8temp=1; U8FLAG=2; while((P2_0)&&U8FLAG++); //超时则跳出for循环 if(U8FLAG==1)break; //判断数据位是0还是1 // 如果高电平高过预定0高电平值则数据位为 1 U8comdata<<=1; U8comdata|=U8temp; //0 }//rof } void RH(void) { //主机拉低18ms P2_0=0; Delay(180); P2_0=1; //总线由上拉电阻拉高 主机延时20us Delay_10us(); Delay_10us(); Delay_10us(); Delay_10us(); //主机设为输入 判断从机响应信号 P2_0=1; //判断从机是否有低电平响应信号 如不响应则跳出，响应则向下运行 if(!P2_0) //T ! { U8FLAG=2; //判断从机是否发出 80us 的低电平响应信号是否结束 while((!P2_0)&&U8FLAG++); U8FLAG=2; //判断从机是否发出 80us 的高电平，如发出则进入数据接收状态 while((P2_0)&&U8FLAG++); //数据接收状态 COM(); U8RH_data_H_temp=U8comdata; COM(); U8RH_data_L_temp=U8comdata; COM(); U8T_data_H_temp=U8comdata; COM(); U8T_data_L_temp=U8comdata; COM(); U8checkdata_temp=U8comdata; P2_0=1; //数据校验 U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp); if(U8temp==U8checkdata_temp) { U8RH_data_H=U8RH_data_H_temp; U8RH_data_L=U8RH_data_L_temp; U8T_data_H=U8T_data_H_temp; U8T_data_L=U8T_dat