EventEmitter based micro-library using spi-device to access a MCP3008 on Raspberry PI and others. Based on mcp-spi-adc by @fivdi

This library might fail to install on other platforms!

Please note: This is provided as is and probably not properly maintained, it should work fine if you have node >= 6.

    const spiDeviceMcp3008 = require('spi-device-mcp3008');
    const myMcp3008 = spiDeviceMcp3008(0, 0, 0); // channel 0 of /dev/spidev0.0

    myMcp3008
    .on('read', (value, raw) => {
        console.log(value, raw);
    })
    .on('error', err => console.error(err));

    myMcp3008.poll(500); // triggers `read` every 500ms

Connect to a MCP3008 via SPI.

• channel number of the channel on your MCP3008 must be provided
• bus SPI bus (ie. 1 if you use /dev/spidev1.2) default: 0
• device SPI device (CE) (ie. 2 if you use /dev/spidev1.2) default: 0
• speedHz SPI clock frequency default 1350000 (via fivdi)

See Source of index.js for further references.

Trigger a single read event.

• delay a delay for the polling interval in milliseconds default: 200

Call .poll() on an spiDeviceMcp3008 instance to emit read events.

Stop polling.

Close the SPI bus instance.

Passes value and raw to the callback every time a reading occurs, either by calling .read() or using .poll();

MIT. See LICENSE file.