strawberry-pi-greenhouse/SDL_Adafruit_ADS1x15/ads1x15_ex_comparator.py

31 lines
930 B
Python

#!/usr/bin/python
import time, signal, sys
from Adafruit_ADS1x15 import ADS1x15
def signal_handler(signal, frame):
print ('You pressed Ctrl+C!')
print (adc.getLastConversionResults()/1000.0)
adc.stopContinuousConversion()
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
# Print 'Press Ctrl+C to exit'
ADS1015 = 0x00 # 12-bit ADC
ADS1115 = 0x01 # 16-bit ADC
# Initialise the ADC using the default mode (use default I2C address)
# Set this to ADS1015 or ADS1115 depending on the ADC you are using!
adc = ADS1x15(ic=ADS1115)
# start comparator on channel 2 with a thresholdHigh=200mV and low=100mV
# in traditional mode, non-latching, +/-1.024V and 250sps
adc.startSingleEndedComparator(2, 200, 100, pga=1024, sps=250, activeLow=True, traditionalMode=True, latching=False, numReadings=1)
while True:
print (adc.getLastConversionResults()/1000.0)
time.sleep(0.25)
#time.sleep(0.1)