# Version 1.0 Created 08/11/2014
# Version 1.1 Updated 11/06/2017 updated to include changes to Expander Pi library
#
# run with: python tester.py
# ================================================
# This script tests the various functionality of the Expander Pi
rtc = RTC() # create a new instance of the RTC class
adc = ADC() # create an instance of the ADC class
io = IO() # create an instance of the IO class
dac = DAC(1) # create an instance of the DAC class with a gain of 0
# set the date using ISO 8601 format - YYYY-MM-DDTHH:MM:SS
rtc.set_date("2017-01-01T00:00:00")
dac.set_dac_voltage(1, 1.5) # set the voltage on channel 1 to 1.5V
dac.set_dac_voltage(2, 1.0) # set the voltage on channel 2 to 1.0V
# set the reference voltage. this should be set to the exact voltage
# measured on the Expander Pi Vref pin.
adc.set_adc_refvoltage(4.096)
while True:
# clear the console
os.system('clear')
# read the date from the RTC in ISO 8601 format and print it to the screen
print 'Date: ' + rtc.read_date()
print ''
print 'ADC: '
print 'Channel 1: ' + str(adc.read_adc_voltage(1, 0))
#!/usr/bin/python3
from ABE_ExpanderPi import DAC
import time
"""
================================================
ABElectronics Expander Pi | DAC Write Demo
Version 1.0 Created 21/08/2014
Version 1.1 Updated 11/06/2017 updated to include changes to Expander Pi library
run with: python3 demo-dacwrite.py
================================================
this demo will generate a 1.5V p-p square wave at 1Hz on channel 1
"""
dac = DAC(1) # create a dac instance with the gain set to 1
while True:
dac.set_dac_voltage(1, 1.5) # set the voltage on channel 1 to 1.5V
time.sleep(1) # wait 1 seconds
dac.set_dac_voltage(1, 0) # set the voltage on channel 1 to 0V
time.sleep(1) # wait 1 seconds
