參考程式碼https://github.com/CRImier/python-MLX90614

需要下載iic的庫

sudo apt install i2c-tools

sudo apt install python-smbus

開啟樹梅派的iic功能

sudo raspi-config

選擇5.Interfacing Options 然後選擇開啟iic

檢視模組的地址

sudo i2cdetect -y -a 1

這裡的預設地址為0x5a

 1 import smbus
 2 from time import sleep
 3 
 4 class MLX90614():
 5 
 6
 
     MLX90614_RAWIR1=0x04
 7     MLX90614_RAWIR2=0x05
 8     MLX90614_TA=0x06
 9     MLX90614_TOBJ1=0x07
10     MLX90614_TOBJ2=0x08
11 
12     MLX90614_TOMAX=0x20
13     MLX90614_TOMIN=0x21
14     MLX90614_PWMCTRL=0x22
15     MLX90614_TARANGE=0x23
16     MLX90614_EMISS=0x24
17     MLX90614_CONFIG=0x25
18     MLX90614_ADDR=0x0E
19     MLX90614_ID1=0x3C
 

20     MLX90614_ID2=0x3D
21     MLX90614_ID3=0x3E
22     MLX90614_ID4=0x3F
23 
24     comm_retries = 5
25     comm_sleep_amount = 0.1
26 
27     def __init__(self, address=0x5a, bus_num=1):
28         self.bus_num = bus_num
29         self.address = address
30         self.bus = smbus.SMBus(bus=bus_num)
31 
32
 
     def read_reg(self, reg_addr):
33         err = None
34         for i in range(self.comm_retries):
35             try:
36                 return self.bus.read_word_data(self.address, reg_addr)
37             except IOError as e:
38                 err = e
39                 #"Rate limiting" - sleeping to prevent problems with sensor
40                 #when requesting data too quickly
41                 sleep(self.comm_sleep_amount)
42         #By this time, we made a couple requests and the sensor didn't respond
43         #(judging by the fact we haven't returned from this function yet)
44         #So let's just re-raise the last IOError we got
45         raise err
46 
47     def data_to_temp(self, data):
48         temp = (data*0.02) - 273.15
49         return temp
50 
51     def get_amb_temp(self):
52         data = self.read_reg(self.MLX90614_TA)
53         return self.data_to_temp(data)
54 
55     def get_obj_temp(self):
56         data = self.read_reg(self.MLX90614_TOBJ1)
57         return self.data_to_temp(data)
58 
59 
60 if __name__ == "__main__":
61     sensor = MLX90614()
62     print(sensor.get_amb_temp())
63     print(sensor.get_obj_temp())

 1 from mlx90614 import MLX90614
 2 import time
 3 
 4 thermometer_address = 0x5a
 5 
 6 thermometer = MLX90614(thermometer_address)
 7 while (1):
 8     print thermometer.get_amb_temp()
 9     print thermometer.get_obj_temp() 
10     time.sleep(1)