手头有个用libusb-win32驱动的USB设备,idVendor= 0x5345, idProduct= 0x1234,就来测试下模块的应用,pyusb让usb编程变得简单和方便,支持 libusb 0.1.x(libusb-win32采用此库), libusb 1.x, and OpenUSB,主要测试发送和接收数据,usb设备信息如下:
代码如下:
import usb.coreimport usb.utilimport sysdev = usb.core.find(idVendor= 0x5345, idProduct= 0x1234)cfg = dev.get_active_configuration()intf = cfg[(0,0)]ep = usb.util.find_descriptor( intf, # match the first OUT endpoint custom_match = \ lambda e: \ usb.util.endpoint_direction(e.bEndpointAddress) == \ usb.util.ENDPOINT_OUT)print 'The length of data(write USB) is:', ep.write('WANTFORGETTXT')ep_read = usb.util.find_descriptor( intf, # match the first IN endpoint custom_match = \ lambda e: \ usb.util.endpoint_direction(e.bEndpointAddress) == \ usb.util.ENDPOINT_IN)data_len = ep_read.read(4)print 'Get USB data:',data_lenlen = (data_len[3] << 24) + (data_len[2] << 16) + (data_len[1] << 8) + data_len[0]print 'data len is:',lendev.reset()结果如下: