47 lines
1.2 KiB
Python
47 lines
1.2 KiB
Python
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#!/usr/bin/python
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import time, signal, sys
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from Adafruit_ADS1x15 import ADS1x15
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def signal_handler(signal, frame):
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print ('You pressed Ctrl+C!')
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sys.exit(0)
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signal.signal(signal.SIGINT, signal_handler)
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#print 'Press Ctrl+C to exit'
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ADS1015 = 0x00 # 12-bit ADC
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ADS1115 = 0x01 # 16-bit ADC
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# Select the gain
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# gain = 6144 # +/- 6.144V
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gain = 4096 # +/- 4.096V
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# gain = 2048 # +/- 2.048V
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# gain = 1024 # +/- 1.024V
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# gain = 512 # +/- 0.512V
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# gain = 256 # +/- 0.256V
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# Select the sample rate
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# sps = 8 # 8 samples per second
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# sps = 16 # 16 samples per second
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# sps = 32 # 32 samples per second
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# sps = 64 # 64 samples per second
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# sps = 128 # 128 samples per second
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sps = 250 # 250 samples per second
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# sps = 475 # 475 samples per second
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# sps = 860 # 860 samples per second
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# Initialise the ADC using the default mode (use default I2C address)
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# Set this to ADS1015 or ADS1115 depending on the ADC you are using!
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adc = ADS1x15(ic=ADS1115)
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while (1):
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# Read channel 1 in single-ended mode using the settings above
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volts = adc.readADCSingleEnded(1, gain, sps) / 1000
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# To read channel 3 in single-ended mode, +/- 1.024V, 860 sps use:
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# volts = adc.readADCSingleEnded(3, 1024, 860)
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print ("%.6f" % (volts))
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time.sleep(0.5)
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