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#include "HEAD.h" void main( void ) { uchar Value; // Stop watchdog timer to prevent time out reset WDTCTL = WDTPW + WDTHOLD; int_clk(); Write_COnfig(0x40,0xE3); //写配置寄存器 Value=Read_Conversion_MSB(); LCD_show_DA(Value); } void Write_Byte(uchar Data) //所有写时间片操作至少需要60us { uchar i=0; SCL_0; SCL_OUT; //时钟信号为输出 SDA_0; SDA_OUT; //数据信号为输出 delay_us(5); for(i=0;i<8;i++) { SCL_0; delay_us(5); if(Data&0x80==1) SDA_1; else SDA_0; delay_us(1); SCL_1; delay_us(2); Data<<=1; } SCL_0; delay_us(5); SDA_0; delay_us(1); SCL_1; delay_us(2); } uchar Read_Byte(void) { uchar i = 0; uchar Data=0; SCL_0; SCL_OUT; //时钟信号为输出 SDA_1; SDA_IN; //数据信号为输入 for(i=0; i<8; i++) { Data<<=1; SCL_0; delay_us(5); if(1==SDA_PIN) Data|=0x01; delay_us(1); SCL_1; delay_us(2); } SCL_1; delay_us(5); return Data; } void Write_COnfig(uchar MSB,uchar LSB) //写配置寄存器 { Write_Byte(ADDRESS_WRITE); Write_Byte(POINT_Config_register); Write_Byte(MSB); Write_Byte(LSB); } void Write_Lo_Thresh(uchar LSB) //写低阀值寄存器 { Write_Byte(ADDRESS_WRITE); Write_Byte(POINT_Lo_register); Write_Byte(LSB); } void Write_Hi_Thresh(uchar MSB) //写高阀值寄存器 { Write_Byte(ADDRESS_WRITE); Write_Byte(POINT_Hi_register); Write_Byte(MSB); } void Read_Conversion(void) //指向转换寄存器 { Write_Byte(ADDRESS_READ); Write_Byte(POINT_Conversion_register); } uchar Read_Conversion_MSB(void) //只读转换寄存器高8位 { uchar MSB; Read_Conversion(); //指向转换寄存器 Write_Byte(ADDRESS_READ); MSB=Read_Byte(); delay_us(20); return MSB; } uint Read_Conversion_M_L(void) //读转换寄存器高,低8位 { uint M_L_SB; uchar LSB,MSB; Read_Conversion(); //指向转换寄存器 Write_Byte(ADDRESS_READ); MSB=Read_Byte(); LSB=Read_Byte(); M_L_SB=(uint)MSB<<8+LSB; delay_us(20); return M_L_SB; }