Legal Removal Request This form is for reporting content posted on the AB Electronics UK forums that you believe violates your personal legal rights or applicable local laws for your country. Post: Hi Chris Can you try the code below and let me know if it works? [pre][code]#!/usr/bin/env python3 # read abelectronics ADC Pi V2 board inputs with repeating reading from each channel. # uses quick2wire from http://quick2wire.com/ github: https://github.com/quick2wire/quick2wire-python-api # Requries Python 3 # GPIO API depends on Quick2Wire GPIO Admin. To install Quick2Wire GPIO Admin, follow instructions at http://github.com/quick2wire/quick2wire-gpio-admin # I2C API depends on I2C support in the kernel # #------------------------------------------------------------------------------ import quick2wire.i2c as i2c import time import datetime #------------------------------------------------------------------------------ adc_address_1 = 0x6A adc_address_2 = 0x6B adc_address_3 = 0x6C adc_address_4 = 0x6D refresh_rate = 1 # seconds log_ratio = 4 # logs every log_ratio cycles varDivisior = 64 # from pdf sheet on adc addresses and config varMultiplier = ((1.0000/varDivisior)/1000) * 2.471 adcmonLog = "/home/pi/DATALOG/P4139-11.log" #------------------------------------------------------------------------------ def writeLog(channel1mv, channel2mv, channel3mv, channel4mv, channel5mv, channel6mv, channel7mv, channel8mv, channel9mv, channel10mv, channel11mv, channel12mv, channel13mv, channel14mv, channel15mv, channel16mv): try: log = open(adcmonLog, "a") currentdatetime = datetime.datetime.now().strftime('%Y-%m-%d %H:%M') log.write(currentdatetime) log.write(",Channel_1_(mV)=%.0f" % channel1mv) log.write(",Channel_2_(mV)=%.0f" % channel2mv) log.write(",Channel_3_(mV)=%.0f" % channel3mv) log.write(",Channel_4_(mV)=%.0f" % channel4mv) log.write(",Channel_5_(mV)=%.0f" % channel5mv) log.write(",Channel_6_(mV)=%.0f" % channel6mv) log.write(",Channel_7_(mV)=%.0f" % channel7mv) log.write(",Channel_8_(mV)=%.0f" % channel8mv) log.write(",Channel_9_(mV)=%.0f" % channel9mv) log.write(",Channel_10_(mV)=%.0f" % channel10mv) log.write(",Channel_11_(mV)=%.0f" % channel11mv) log.write(",Channel_12_(mV)=%.0f" % channel12mv) log.write(",Channel_13_(mV)=%.0f" % channel13mv) log.write(",Channel_14_(mV)=%.0f" % channel14mv) log.write(",Channel_15_(mV)=%.0f" % channel15mv) log.write(",Channel_16_(mV)=%.0f" % channel16mv) log.write("\n") except: pass #------------------------------------------------------------------------------ logCountDown = 1 with i2c.I2CMaster(1) as bus: # Usage: changechannel(address, hexvalue) # to change to new channel on adc chips def changechannel(address, adcConfig): bus.transaction(i2c.writing_bytes(address, adcConfig)) # Usage: getadcreading(address) to return value in volts from # selected channel. def getadcreading(address): h, m, l ,s = bus.transaction(i2c.reading(address,4))[0] while (s & 128): h, m, l, s = bus.transaction(i2c.reading(address,4))[0] # shift bits to product result t = ((h & 0b00000001) << 16) | (m << 8) | l # check if positive or negative number and invert if needed if (h > 128): t = ~(0x020000 - t) return t * varMultiplier while True: # read first 16 channels and convert to millivolts changechannel(adc_address_1, 0x9C) channel1mv = 1000 * getadcreading(adc_address_1) changechannel(adc_address_1, 0xBC) channel2mv = 1000 * getadcreading(adc_address_1) changechannel(adc_address_1, 0xDC) channel3mv = 1000 * getadcreading(adc_address_1) changechannel(adc_address_1, 0xFC) channel4mv = 1000 * getadcreading(adc_address_1) changechannel(adc_address_2, 0x9C) channel5mv = 1000 * getadcreading(adc_address_2) changechannel(adc_address_2, 0xBC) channel6mv = 1000 * getadcreading(adc_address_2) changechannel(adc_address_2, 0xDC) channel7mv = 1000 * getadcreading(adc_address_2) changechannel(adc_address_2, 0xFC) channel8mv = 1000 * getadcreading(adc_address_2) changechannel(adc_address_3, 0x9C) channel9mv = 1000 * getadcreading(adc_address_3) changechannel(adc_address_3, 0xBC) channel10mv = 1000 * getadcreading(adc_address_3) changechannel(adc_address_3, 0xDC) channel11mv = 1000 * getadcreading(adc_address_3) changechannel(adc_address_3, 0xFC) channel12mv = 1000 * getadcreading(adc_address_3) changechannel(adc_address_4, 0x9C) channel13mv = 1000 * getadcreading(adc_address_4) changechannel(adc_address_4, 0xBC) channel14mv = 1000 * getadcreading(adc_address_4) changechannel(adc_address_4, 0xDC) channel15mv = 1000 * getadcreading(adc_address_4) changechannel(adc_address_4, 0xFC) channel16mv = 1000 * getadcreading(adc_address_4) # Log logCountDown -= 1 if (logCountDown == 0): writeLog(channel1mv, channel2mv, channel3mv, channel4mv, channel5mv, channel6mv, channel7mv, channel8mv, channel9mv, channel10mv, channel11mv, channel12mv, channel13mv, channel14mv, channel15mv, channel16mv) logCountDown = log_ratio time.sleep(refresh_rate)[/code][/pre] Select the country where you are claiming legal rights. 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