0

我有一个 Delcom USB 灯 - 想想构建灯（http://www.delcomproducts.com/products_USBLMP.asp），我试图从 node.js 控制它（如果有什么不同，可以在 Ubuntu 上运行）

我正在使用 node-usb ( https://github.com/schakko/node-usb )，我可以连接并认领该设备。我什至可以让它“闪烁”（就像你第一次插入它时一样），但我不能让它保持点亮状态，更不用说改变颜色了

var usb_driver = require("../usb.js"), 
    assert = require('assert');

// setup our vars
var lightVID = 0x0fc5
var lightPID = 0xb080

// Search for ledLight
var usb = usb_driver.create()

var theLight_devices = usb.find_by_vid_and_pid(lightVID, lightPID);
assert.ok((theLight_devices.length >= 1));
console.log("Total lights found: " + theLight_devices.length);  

// get the light
var theLight = theLight_devices[0];

var theLightInterfaces = theLight.getInterfaces();
assert.ok((theLightInterfaces.length >= 1));
console.log("The Light contains interfaces: " + theLightInterfaces.length);

var theLightInterface = theLightInterfaces[0];
console.log("Claiming the LIGHT interface for further actions")
theLightInterface.detachKernelDriver();
//theLightInterface.claim()

console.log(theLightInterface.claim());

// controlTransfer(mixed read|write, _bmRequestTyc8, _bRequest, _wValue, _wIndex, func, timeout);
theLight.controlTransfer(new Buffer(10), 0x88, 0xc8, 0x0635, 0x04, function() {     console.log("LED toggled") }, 0);

当你运行它时，它告诉我有一个设备，它声称它，它甚至闪烁，但它不会一直亮着。

关于下一步该转向哪里的任何想法？

是否与关闭 Node.js 和“闪存”计算机再次控制 USB 端口有关？

4

1 回答 1

0

下面是一些更新的代码：

var theLightInterface = theLightInterfaces[0]
console.log("Claiming the LIGHT interface for further actions " + theLightInterface)

for(var inter in theLightInterface){
    console.log("Name: "+ inter)
    console.log("Value: "+ theLightInterface[inter])
}
console.log("Is Active: "+ theLightInterface.isKernelDriverActive() )
console.log("Release Kernel: "+ theLightInterface.detachKernelDriver() )
console.log("Claim Interface: "+ theLightInterface.claim() )

theLight.controlTransfer(new Buffer(0), 0x12, 0xc8, 0x04, 101, function() { console.log("LED toggled") }, 1000)

结果是：

Is Active: 1
Release Kernel: undefined
Claim Interface: undefined

设置 0x12 和 0xc8 后，它确实使灯闪烁/闪烁 - 但我认为我无法控制 USB 驱动程序

于 2013-03-26T21:07:22.743 回答