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ADS125x

Analog to Digital conversion with ADS1255 and ADS1256. Tested with Raspberry Pi 3 and Waveshare High-Precision AD/DA Board (which uses the ADS1256). The concept for this library was largely borrowed from PiPyADC;

Usage

import { ADS125x } from 'ads125x';

const config = {
  drdyPin: 17,
  resetPin: 18,
  pdwnPin: 27,
  csPin: 22,
  spiChannel: 1,
};

const a = new ADS125x(config);
a.calibrateSelf()
  .then(() => a.wakeup());

To read values from a channel, call the read function with the specified channel configuration. The following examples uses the 0 channel for the positive reading and the "Analog Input Common" for negative. See the datasheet for more information.

const POS_AIN0   = 0x00;
const NEG_AINCOM = 0x08;

const v = a.read(POS_AIN0 | NEG_AINCOM)
  .then(output => console.info(output));

Test

npm test