45 lines
1.2 KiB
JavaScript
Executable File
45 lines
1.2 KiB
JavaScript
Executable File
#!/usr/bin/env node
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'use strict';
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var usb = require('usb');
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var util = require('./util');
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var vid = 0x16d3;
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var pid = 0x05ea;
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var LED_PWM_COMMAND_ID = 10;
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var device = usb.findByIds(vid, pid);
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device.open();
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var usbInterface = device.interface(0);
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// https://github.com/tessel/node-usb/issues/147
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// The function 'isKernelDriverActive' is not available on Windows and not even needed.
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if (process.platform !== 'win32' && usbInterface.isKernelDriverActive()) {
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usbInterface.detachKernelDriver();
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}
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usbInterface.claim();
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var endpointIn = usbInterface.endpoints[0];
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var endpointOut = usbInterface.endpoints[1];
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var brightnessPercent = 0;
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setInterval(function() {
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brightnessPercent = brightnessPercent ? 0 : 100
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console.log('Sending ', brightnessPercent);
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endpointOut.transfer(new Buffer([LED_PWM_COMMAND_ID, brightnessPercent]), function(err) {
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if (err) {
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console.error("USB error: %s", err);
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process.exit(1);
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}
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endpointIn.transfer(64, function(err2, receivedBuffer) {
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if (err2) {
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console.error("USB error: %s", err2);
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process.exit(2);
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}
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console.log('Received', util.bufferToString(receivedBuffer));
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})
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});
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}, 500)
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