android：與USB裝置通訊

Communicating with a USB device in Android

http://gssdaily.com/forum/viewtopic.php?f=17&t=96084

by
jack » Sat Sep 29, 2012 10:18 pm

Communicating with a USB device in Android

Communication with a USB device can be either synchronous or asynchronous. In either case, you should create a new thread on which to carry out all data transmissions, so you don't block the UI thread. To properly set up communication with a device, you need
to obtain the appropriate UsbInterface and UsbEndpoint of the device that you want to communicate on and send requests on this endpoint with a UsbDeviceConnection.

Code:
Select all

rivate Byte[] bytes
private static int TIMEOUT = 0;
private boolean forceClaim = true;

...

UsbInterface intf = device.getInterface(0);
UsbEndpoint endpoint = intf.getEndpoint(0);
UsbDeviceConnection connection = mUsbManager.openDevice(device);
connection.claimInterface(intf, forceClaim);
connection.bulkTransfer(endpoint, bytes, bytes.length, TIMEOUT); //do in another thread


jack

 

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