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- #!/usr/bin/env node
-
- // LUFA Library
- // Copyright (C) Dean Camera, 2014.
- //
- // dean [at] fourwalledcubicle [dot] com
- // www.lufa-lib.org
-
- // LUFA Generic HID device demo host test script. This script will send a
- // continuous stream of generic reports to the device, to show a variable LED
- // pattern on the target board. Send and received report data is printed to
- // the terminal.
- //
- // You have to install the usb and async modules prior to executing this script:
- // apt-get install libusb-1.0-0-dev
- // npm install usb async sprintf
-
- var usb = require('usb');
- var async = require('async');
- var sprintf = require('sprintf');
-
- var deviceVid = 0x03EB;
- var devicePid = 0x204F;
- var reportLength = 8;
-
- function getAndInitHidDeviceAndInterface()
- {
- device = usb.findByIds(deviceVid, devicePid);
- if (!device) {
- console.log('No device found');
- process.exit(1);
- }
- device.open();
-
- var hidInterface = device.interface(0);
- if (hidInterface.isKernelDriverActive()) {
- hidInterface.detachKernelDriver();
- }
- hidInterface.claim();
-
- async.series([
- function(callback) {
- setConfiguration(0, function(error, data) {
- callback();
- });
- }
- ]);
-
- return {hidDevice:device, hidInterface:hidInterface};
- }
-
- function read(hidInterface, callback)
- {
- endpoint = hidInterface.endpoints[0];
- endpoint.transfer(reportLength, function(error, data) {
- if (error) {
- console.log(error)
- } else {
- console.log("Received LED Pattern:", data.slice(0, 4));
- }
- callback();
- });
- }
-
- function write(hidDevice, message, callback)
- {
- hidDevice.controlTransfer( // Send a Set Report control request
- parseInt('00100001', 2), // bmRequestType (constant for this control request)
- 0x09, // bmRequest (constant for this control request)
- 0x0809, // wValue (MSB is report type, LSB is report number)
- 0, // wIndex (interface number)
- message, // message to be sent
- function(error, data) { // callback to be executed upon finishing the transfer
- console.log("Sent LED Pattern:", message.slice(1, 5))
- callback();
- }
- );
- }
-
- function setConfiguration(configurationNumber, callback)
- {
- device.controlTransfer( // Send a Set Configuration control request
- parseInt('00000000', 2), // bmRequestType
- 0x09, // bmRequest
- 0, // wValue (Configuration value)
- 0, // wIndex
- new Buffer(0), // message to be sent
- callback // callback to be executed upon finishing the transfer
- );
- }
-
- // @TODO: Fix this function because apparently it doesn't work for some reason.
- function getStringDescriptor(stringId, languageId, callback)
- {
- var STRING_DESCRIPTOR_TYPE = 0x03;
- var wValue = (STRING_DESCRIPTOR_TYPE << 8) | stringId;
-
- device.controlTransfer( // Send a Get Descriptor control request
- parseInt('10000000', 2), // bmRequestType
- 0x06, // bmRequest
- wValue, // wValue
- languageId, // wIndex
- 64, // response length
- callback // callback to be executed upon finishing the transfer
- );
- }
-
- function setNextPattern()
- {
- var pattern = [
- hidInterface.interface,
- (p >> 3) & 1,
- (p >> 2) & 1,
- (p >> 1) & 1,
- (p >> 0) & 1
- ];
-
- async.series([
- function(callback) {
- write(hidDevice, new Buffer(pattern), callback);
- },
- function(callback) {
- read(hidInterface, callback);
- },
- function(callback) {
- p = (p + 1) % 16
- setTimeout(setNextPattern, 200);
- callback();
- }]);
- }
-
- var hidDeviceAndInterface = getAndInitHidDeviceAndInterface();
- var hidDevice = hidDeviceAndInterface.hidDevice
- var hidInterface = hidDeviceAndInterface.hidInterface;
-
- console.log(sprintf("Connected to device 0x%04X/0x%04X - %s [%s]",
- hidDevice.deviceDescriptor.idVendor,
- hidDevice.deviceDescriptor.idProduct,
- hidDevice.deviceDescriptor.iProduct,
- hidDevice.deviceDescriptor.iManufacturer));
-
- p = 0
- setNextPattern();
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