I have modified my code a bit adding class.
Still the same problem.
Why cant I write into the device since the device has been detected.
Here's my code
########################################################
#!usr/bin/python
import usb
import time
class HardwareMonitor_printer(object):
def __init__(self, vendor_id, product_id):
self.device_found = False # True if device found
busses = usb.busses() # enumerate busses
self.handle = None
# print 'busses: ',busses
for bus in busses:
# print 'bus: ',bus
devices = bus.devices
# print 'devices: ',devices
for dev in devices:
if dev.idVendor == vendor_id and dev.idProduct ==
product_id: # device matches
self.dev = dev
self.conf = self.dev.configurations[0]
self.intf = self.conf.interfaces[0][0]
self.endpoints = []
for endpoint in self.intf.endpoints:
self.endpoints.append(endpoint)
self.device_found = True
return
def open(self):
if self.handle:
self.handle = None
try:
self.handle = self.dev.open()
self.handle.detachKernelDriver(0)
self.handle.detachKernelDriver(1)
self.handle.setConfiguration(self.conf)
self.handle.claimInterface(self.intf)
self.handle.setAltInterface(self.intf)
return True
except:
return False
def write(self, ep , buff, timeout=100):
try:
return self.handle.interruptWrite(ep, buff, timeout) #return
bytes written
except usb.USBError as e:
print e
return 0
def read(self, ep, size, timeout=100):
try:
return self.handle.interruptRead(ep, size, timeout) # return
data read
except:
return []
def getDeviceName(self):
try:
for i in range (1, 4):
print self.handle.getString(i,25)
except IOError as e:
print e
def endpoint(self):
return self.endpoints
if __name__ == '__main__':
printer = HardwareMonitor_printer(0xdd4,0x1a8)
if printer.device_found:
printer.open()
printer.getDeviceName()
#: is there something wrong with the parameters ?
bytes_written = printer.write(1, [0x81], 1000)
time.sleep(1)
#: is this parameter right ?
bytes_read = printer.read(0x81, 64)
print 'rx data: ', bytes_read
else:
print 'device not found!!!'
===============================
I got this output.
$ sudo python hardware_monitor_printer.py
CUSTOM Engineering S.p.A.
TG2480-H
Self Power Mode
error submitting URB: No such file or directory
rx data: []
===============================
Please someone help me. I really need to
solve this. At least I need to send some hex
codes into the device.
Thanks in regards.
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