On Sat, Jul 30, 2011 at 10:24 AM, C Duff <[email protected]> wrote:
> Nope, didn't work. I've tried 1,7,8,64,1000 nothing seems to work - they all
> give the same error.
> I should have mentioned this in the first message but I'm running ubuntu
> 11.04 64 with python 2.7, if that makes a difference.
Try the following, it should work. I tested this under Ubuntu 10.10 64bit
with Python 2.6. The last reset command is necessary due to potential
bugs (data toggle) of the Microchip USB Firmware Framework.
------------------------------------
#!/usr/bin/env python
import usb.core
import usb.util
#find our device
dev = usb.core.find(idVendor=0x04D8, idProduct=0x0204)
#was it found?
if dev is None:
raise ValueError('Device not found')
#set the active configuration. with no args we use first config.
dev.set_configuration()
#turn light on
print "Toggle LED by sending Toggle_LED command"
dev.write(1, [0x080], 0, 1000)
print "Sending read switch command"
dev.write(1,[0x081],0,1000)
s=dev.read(0x81,64,0,5000)
print "Echo read switch command 0x81"
print s[0]
print "Read switch status, 1 means not pressed, 0 means pressed"
print s[1]
dev.reset()
------------------------------------
mcuee@ubuntu64:~/Desktop/build/pyusb/tutorial$ python testmchp_libusb1.py
Toggle LED by sending Toggle_LED command
Sending read switch command
Echo read switch command 0x81
129
Read switch status, 1 means not pressed, 0 means pressed
1
mcuee@ubuntu64:~/Desktop/build/pyusb/tutorial$ python testmchp_libusb1.py
Toggle LED by sending Toggle_LED command
Sending read switch command
Echo read switch command 0x81
129
Read switch status, 1 means not pressed, 0 means pressed
0
--
Xiaofan
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