MLX90614 driver, function introduction and PEC verification

MLX90614 Infrared thermometer

communication mode SMBus, There's a PEC check , Let's start with PEC.

PEC Please refer to another article for the principle and implementation ：

(30 Bar message ) CRC-8(PEC) Verification principle and Implementation _liujie49992 The blog of -CSDN Blog https://blog.csdn.net/liujie49992/article/details/122506500?spm=1001.2014.3001.5501

Emissivity The address is EEPROM:0x04,opcode:0x04|0x20

Emissivity needs to be adjusted according to the emissivity of the measured object , Attach partial emissivity ：

The address of the temperature is RAM:0x07, opcode:0x07

  According to the above figure, the algorithm for calculating the temperature

T = Treg*0.02-273.15

Go to sleep mode opcode:0xFF

Wake up the ：

  Driver source code ：

nitto_adv/drv_mlx.c at main · JohnLiu-cloud/nitto_adv (github.com)https://github.com/JohnLiu-cloud/nitto_adv/blob/main/src/drivers/drv_mlx.c