mcp3201.js

A node.js module for interfacing the MCP3201 analog/digital converter.

This library uses the package pi-spi that enable the comunication with SPI devices in most commmon Linux SBCs. Raspberry Pi, C.H.I.P., BeagleBone, Orange Pi, or Intel Edison are supported by this package.

Installation

$ npm install mcp3201.js

Usage

Here's a short example:

var Mcp3201 = require('mcp3201.js'),
    adc = new Mcp3008()

adc.read(function (value) {
    console.log("Voltage = " + value);
});

Interface

Constructor

new Mcp3008([device]);

Device defaults to /dev/spidev0.0.

Reading

instance.read(callback);

This will read the value and send it to callback.

Polling

instance.poll(interval, callback);

This will read the value every interval milliseconds and send it to callback. Use instance.stop() to stop it.

Tear down

instance.close();

This will release the device and stop polling (if any).