Le 16/09/2016 à 01:21, Joe a écrit :
> Am 15.09.2016 um 12:11 schrieb Joe:
>>>> What's the best method to install it?
>> Solved: pip install hidapi
>>
> This is now working with the usb hid interface of the UT61B DMM:
> hid.device.get_manufacturer_string,
> hid.device.get_product_string,
> hid.device.get_serial_number_string and
> hid.enumerate.
>
> But I could not find descriptions or documentation or samples of the
> following methods and properties of hid.device:
> error, close, open, open_path, read, write, send_feature_report.
> Unfortunetaly I see no source in the package, only a pyd file.
>
> Any hint, any idea?
> Thanx -- Joe
>
Even if it is not the right place (PyUSB mailing list) here is an example :
class MyDevice(object):
def __init__(self, vendor_id=0xXXXX, product_id=0xYYYY, path=None):
self.vendor_id = vendor_id
self.product_id = product_id
self.path = path
if path :
self.__dev = hid.Device(path=path)
else :
self.__dev = hid.Device(self.vendor_id, self.product_id)
self.manufacturer = self.__dev.manufacturer
self.product = self.__dev.product
def GetFeature1(self):
return struct.unpack("B",
self.__dev.get_feature_report(HID_FEATURE_1, 5)[4])[0]
def SetFeature2(self, value):
self.__dev.send_feature_report(struct.pack("<BBBBL",
HID_FEATURE_2 0,0,0, value))
def RequestSomeData(self):
self.__dev.write(struct.pack("BBBB",
HID_REPORT_OUT_REQUEST_SOME_DATA, 0,0,0))
def GetData(self):
data = self.__dev.read(64, 1000)
if data :
report_id = struct.unpack("B", data[0])[0]
if report_id == HID_REPORT_IN_MY_NOP :
return None,
elif report_id == HID_REPORT_IN_1 :
value = struct.unpack("<L", data[4:8])[0]
return 1, value
elif report_id == HID_REPORT_IN_2 :
value = struct.unpack("<LHHHHHHHHHHHH", data[4:])
return 2, value[0], value[1:]
else :
print "???"
d = MyDevice()
d.SetFeature2(2)
while True :
data = d.GetData()
if data :
if data[0] == None :
print "NOP"
elif data[0] == 1 :
print "1 : %8.8X" % data[1]
elif data[0] == 2 :
print "2 : %3.3X" % data[1], data[2]
Hope this helps.
Nicolas
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