1  import time
 2  import board
 3  import busio
 4  
 5  # import adafruit_ads1x15.ads1015 as ADS
 6  import adafruit_ads1x15.ads1115 as ADS
 7  from adafruit_ads1x15.analog_in import AnalogIn
 8  
 9  # Create the I2C bus
10  i2c = busio.I2C(board.SCL, board.SDA)
11  
12  # Create the ADS object
13  # ads = ADS.ADS1015(i2c)
14  ads = ADS.ADS1115(i2c)
15  
16  # Create a sinlge ended channel on Pin 0
17  #   Max counts for ADS1015 = 2047
18  #                  ADS1115 = 32767
19  chan = AnalogIn(ads, ADS.P0)
20  
21  # The ADS1015 and ADS1115 both have the same gain options.
22  #
23  #       GAIN    RANGE (V)
24  #       ----    ---------
25  #        2/3    +/- 6.144
26  #          1    +/- 4.096
27  #          2    +/- 2.048
28  #          4    +/- 1.024
29  #          8    +/- 0.512
30  #         16    +/- 0.256
31  #
32  gains = (2 / 3, 1, 2, 4, 8, 16)
33  
34  while True:
35      ads.gain = gains[0]
36      print("{:5} {:5.3f}".format(chan.value, chan.voltage), end="")
37      for gain in gains[1:]:
38          ads.gain = gain
39          print(" | {:5} {:5.3f}".format(chan.value, chan.voltage), end="")
40      print()
41      time.sleep(0.5)