mcp3424 analog to digital converter library

npm install @iiot2k/mcp3424

or add in your package.json:

"dependencies": {
    "@iiot2k/mcp3424": "latest"
},

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• 12..18bit Conversion Resolution.
• Four Analog Inputs.
• Internal Voltage Reference.
• Internal Oscillator.
• Programmable Resolution with Data Rate 3.75 SPS (18bits) to 240 SPS (12bits).
• The PGA offers input ranges from ±256 mV to ±2048 V.
• I2C Interface with eight Pin-Selectable Addresses.
• Works also for mcp3421..mcp3428

• This library works on Raspberry Pi with 32bit or 64bit OS.
• The output value is mV or adc raw data.
• Enable I2C with raspi-config.
• In this case i2c-1 is enabled (port=1).
• If you use i2c-0 port add
  dtparam=i2c_vc=on
  to /boot/config.txt,
  then Pin27=SDA, Pin28=SCK.
  
• For other ports add this to /boot/config.txt.

API functions are explained in documents API.md

C++ libraries and examples

Report any issues here

// example reads single adc input
"use strict";

const mcp3424 = require("@iiot2k/mcp3424");

mcp3424.read(
    1, // i2c-1
    mcp3424.ADR_68, // address 0x68
    mcp3424.CH_1, // CH1
    mcp3424.AI_12BIT, // 12 bit res.
    mcp3424.GAIN_2048, // 2048mV input
    false, // no rawdata
    function(data) {
        if (data === undefined)
            console.log(ads1115.error_text());
        else
            console.log(data, "mV");
    });

Examples are on examples folder.