红外测温枪因疫情发生火灾，我目前知道相应的传感器MLX90632和MLX90614以及BM43THD80A，该传感器用于收集温度，因为90632包装体积小，嵌入方便。以下是调试过程。
废话不多说，官方的Demo源码直接去github可以搜索Demo例程过后，mlx90632_depends.h 我们需要改进文件中的三个函数。
附上我的代码
int32_t mlx90632_i2c_write(int16_t register_address, uint16_t value) { IIC_Start(); Write_IIC_Byte(MLX90632_DEVICE_ADDR_W); IIC_Wait_Ack(); Write_IIC_Byte(register_address >> 8); IIC_Wait_Ack(); Write_IIC_Byte(register_address & 0xff); IIC_Wait_Ack(); Write_IIC_Byte(value >> 8); IIC_Wait_Ack(); Write_IIC_Byte(value & 0xff); IIC_Wait_Ack(); IIC_Stop(); return 0; } int32_t mlx90632_i2c_read(int16_t register_address, uint16_t *value) { uint8 Val[2]; IIC_Start(); Write_IIC_Byte(MLX90632_DEVICE_ADDR_W); IIC_Wait_Ack(); Write_IIC_Byte(register_address >> 8); IIC_Wait_Ack(); Write_IIC_Byte(register_address & 0xff); IIC_Wait_Ack(); IIC_Start(); Write_IIC_Byte(MLX90632_DEVICE_ADDR_R); IIC_Wait_Ack(); Val[0] = Read_IIC_Byte(1); Val[1] = Read_IIC_Byte(0); IIC_Stop(); *value = (Val[0] << 8) | Val[1]; return 0; } void usleep(int min_range, int max_range) { delay_ue(10500); //10.5ms }三个函数完成后，移植已经完成了一半以上，因为我使用的模拟IIC，因此，初始化函数还需要初始化引脚如下：
int32_t mlx90632_init(void) { int32_t ret; uint16_t eeprom_version, reg_status; gpio_init_output(IIC_CLK, GPIO_PULL_UP, 1); gpio_init_output(IIC_SDA, GPIO_PULL_UP, 1); ret = mlx90632_i2c_write(MLX90632_REG_CTRL, 0x0002); //sleeping step mode if (ret < 0) { return ret; } ret = mlx90632_i2c_read(MLX90632_EE_VERSION, &eeprom_version); if (ret < 0) { return ret; } if ((eeprom_version & 0x00FF) != MLX90632_DSPv5) { // this here can fail because of big/little endian of cpu/i2c return -EPROTONOSUPPORT; } ret = mlx90632_i2c_read(MLX90632_REG_STATUS, ®_status); if (ret < 0) return ret; // Prepare a clean start with setting NEW_DATA to 0 ret = mlx90632_i2c_write(MLX90632_REG_STATUS, reg_status & ~(MLX90632_STAT_DATA_RDY)); if (ret < 0) return ret; /* Read sensor EEPROM registers needed for calcualtions */ mlx90632_read_eeprom(&P_R, &P_G, &P_O, &P_T, &Ea, &Eb, &Fa, &Fb, &Ga, &Gb, &Ha, &Hb, &Ka); return 0; }这里有个要注意的地方。 mlx90632_read_eeprom(&P_R, &P_G, &P_O, &P_T, &Ea, &Eb, &Fa, &Fb, &Ga, &Gb, &Ha, &Hb, &Ka); 该函数读取官方出厂存储EEPROM我直接读取并使用中间的校准数据。经过调试，我发现读取温度总是很低。我用额头做了大约2个实验cm，数据测量不到34度？我不知道我们是否还需要赔偿。官员给的datasheet中也没有对P_R,P_G,P_O说明校准参数。我不知道我们是否还需要赔偿。官员给的datasheet中也没有对P_R,P_G,P_O等待校准参数的说明。以下是阅读代码，看看是否有知情人士可以回答。
float Get_MXL90632_Vlaue(void) { static int16_t ambient_new_raw; static int16_t ambient_old_raw; static int16_t object_new_raw; static int16_t object_old_raw; double pre_ambient; double pre_object; double ambient; /**< Ambient temperature in degrees Celsius */ double object; /**< Object temperature in degrees Celsius */ int32_t ret = 0; /**< Variable will store return values */ uint8 buf[16]; // int32_t P_T = 0; // int32_t P_R = 6095107; // int32_t P_G = 85785317; // int32_t P_O = 6400; // int16_t Gb = 9728; // int16_t Ka = 10752; // int32_t Ea = 5361582; // int32_t Eb = 6095107; // int32_t Ga = 0xFDFFA7A5; // int32_t Fa = 55599953; // int32_t Fb = 0xFE2571F1; // int16_t Ha = 16384; // int16_t Hb = 0; /* Now we read current ambient and object temperature */ ret = mlx90632_read_temp_raw(&ambient_new_raw, &ambient_old_raw, &object_new_raw, &object_old_raw); if(ret < 0) /* Something went wrong - abort */ return ret; /* Get preprocessed temperatures needed for object temperature calculation */ pre_ambient = mlx90632_preprocess_temp_ambient(ambient_new_raw, ambient_old_raw, Gb); pre_object = mlx90632_preprocess_temp_object(object_new_raw, object_old_raw, ambient_new_raw, ambient_old_raw, Ka); /* Set emissivity = 1 */ mlx90632_set_emissivity(1.0); ambient = mlx90632_calc_temp_ambient(ambient_new_raw, ambient_old_raw, P_T, P_R, P_G, P_O, Gb); /* Calculate object temperature */ object = mlx90632_calc_temp_object(pre_object, pre_ambient, Ea, Eb, Ga, Fa, Fb, Ha, Hb); //Uart DEBUG //sprintf((char*)buf, "%.2f %.2f\r\n", ambient, object); //STTM_sendToUart(buf, strlen((char*)buf)); return object; }