GY电子罗盘51单片机IIC程序.doc

// GY-26 IIC测试程序 // 使用单片机STC89C51 // 晶振：11.0592M // 显示：LCD1602 // 编译环境 Keil uVision2 // 程序中把模块当24c04进行通信 #include REG51.H #include math.h //Keil library #include stdio.h //Keil library #include intrins.h #define uchar unsigned char #define uint unsigned int #define DataPort P0 //LCD1602数据端口 #define WriteDeviceAddress 0xe0 //定义器件在IIC总线中的地址 #define ReadDeviceAddress 0xe1 //器件在IIC总线中地址+1 typedef unsigned char BYTE; typedef unsigned short WORD; BYTE BUF[8]; //数据缓存区 BYTE code res[6] _at_ 0x23; sbit SCL=P1^0; //iic时钟引脚定义 sbit SDA=P1^1; //iic数据引脚定义 sbit LCM_RS=P2^0; //LCD1602命令端口 sbit LCM_RW=P2^1; //LCD1602命令端口 sbit LCM_EN=P2^2; //LCD1602命令端口 sbit KEY_1 =P2^6; //按键1 sbit KEY_2 =P2^5; //按键2 sbit KEY_3 =P2^4; //按键3 sbit KEY_4 =P2^3; //按键4 uchar templ,temph,cnt; uchar ge,shi,bai,qian; uint dis_data,dis_data1; void delay(unsigned int k); void InitLcd(); void WriteDataLCM(uchar dataW); void WriteCommandLCM(uchar CMD,uchar Attribc); void DisplayOneChar(uchar X,uchar Y,uchar DData); uchar HEX_TO_ASCII(uchar HEX_data); void conversion(uint temp_data); // void Delay5us(); void Delay5ms(); void AT24C04_Start(); void AT24C04_Stop(); void AT24C04_SendACK(bit ack); bit AT24C04_RecvACK(); void AT24C04_SendByte(BYTE dat); BYTE AT24C04_RecvByte(); void AT24C04_ReadPage(); void AT24C04_WritePage(); void read_cmp(void); // void cal_on(); void cal_off(); void recovery_factory(); void CMP_OFFS(); void IIC_ADDR_Change(); void delay_10ms(); //********************************************************* uchar HEX_TO_ASCII(uchar HEX_data) {uchar ASCII_data; switch(HEX_data){ case 0x00:ASCII_data=0x30;break; case 0x01:ASCII_data=0x31;break; case 0x02:ASCII_data=0x32;break; case 0x03:ASCII_data=0x33;break; case 0x04:ASCII_data=0x34;break; case 0x05:ASCII_data=0x35;break; case 0x06:ASCII_data=0x36;break; case 0x07:ASCII_data=0x37;break;