MLX90640综合读写测试程序(STC单片机)

/******************************************************************** ** 包含头文件 ********************************************************************/ #include <STC8FXX.h> #include "cpu.h" #include "iic.h" #include "MLX90640.h" void MLX90640_I2CInit() { IIC_Stop(); } //从指定地址读取n个字（每个字占用2个字节） unsigned char MLX90640_I2CRead(unsigned int startAddress, unsigned int nWordsRead, unsigned int *datas) { unsigned char c1,c2; unsigned int i; unsigned char Msb,Lsb; Msb=(unsigned char)(startAddress>>8); Lsb=(unsigned char)(startAddress&0x00FF); IIC_Start(); //发送起始命令 IIC_SendData(MLX_Addr); //发送设备地址+写命令 IIC_RecvACK(); IIC_SendData(Msb); //发送要操作的地址值2字节 IIC_RecvACK(); IIC_SendData(Lsb); IIC_RecvACK(); IIC_Start(); //发送起始命令 IIC_SendData(MLX_Addr+1); //发送设备地址+读命令 IIC_RecvACK(); for (i=0;i<nWordsRead;i++) { c1=IIC_RecvData(); IIC_SendACK(); c2=IIC_RecvData(); if (i==(nWordsRead-1)) IIC_SendNAK(); else IIC_SendACK(); datas[i]=c1; datas[i]<<=8; datas[i]|=c2; } IIC_Stop(); //发送停止命令 return 0; } unsigned char MLX90640_I2CWrite(unsigned int writeAddress, unsigned int word) { IIC_Start(); //发送起始命令 IIC_SendData(MLX_Addr); //发送设备地址+写命令 IIC_RecvACK(); IIC_SendData(writeAddress>>8); //发送要操作的地址值2字节 IIC_RecvACK(); IIC_SendData(writeAddress&0x00FF); IIC_RecvACK(); IIC_SendData(word>>8); IIC_RecvACK(); IIC_SendData(word&0x00FF); IIC_RecvACK(); IIC_Stop(); return 0; } signed char MLX90640_DataReady(void)//RAM数据是否就绪，反回-1表示未就绪，0表示Frame0就绪，1表示Frame1就绪 { unsigned int statusReg[1]; MLX90640_I2CRead(0x8000, 1, statusReg); if (statusReg[0]&0x0008)//有测量完成的Frame { return (statusReg[0]&0x0001); } return (-1); } void MLX90640_SetResolution(unsigned char resolution) { unsigned int controlRegister1; MLX90640_I2CRead(0x800D, 1, &controlRegister1); controlRegister1&=~0x0C00;//bit11:10 controlRegister1|=(resolution<<10); MLX90640_I2CWrite(0x800D, controlRegister1); } unsigned char MLX90640_GetCurResolution(void) { unsigned int controlRegister1; unsigned int Ram; MLX90640_I2CRead(0x800D, 1, &controlRegister1); Ram = (controlRegister1 & 0x0C00) >> 10; return Ram; } void MLX90640_SetRefreshRate(unsigned char refreshRate) { unsigned int controlRegister1; MLX90640_I2CRead(0x800D, 1, &controlRegister1); controlRegister1&=~0x0380;//bit9:7 controlRegister1|=(refreshRate<<7); MLX90640_I2CWrite(0x800D, controlRegister1); } unsigned char MLX90640_GetRefreshRate(void) { unsigned int controlRegister1; unsigned int Ram; MLX90640_I2CRead(0x800D, 1, &controlRegister1); Ram = (controlRegister1 & 0x0380) >> 7; return Ram; } void MLX90640_SetArrangeMode(unsigned char mode) { unsigned int controlRegister1; MLX90640_I2CRead(0x800D, 1, &controlRegister1); controlRegister1&=~0x1000;//bit12 controlRegister1|=(mode<<12); MLX90640_I2CWrite(0x800D, controlRegister1); } unsigned char MLX90640_GetArrangeMode(void) { unsigned int controlRegister1; unsigned int Ram; MLX90640_I2CRead(0x800D, 1, &controlRegister1); Ram = (controlRegister1 & 0x1000) >> 12; return Ram; }