Byte array is sorted when sending via USB

[daviddlc68]

I'm new to the forum and new to Python as well

I'm using Python 3.7.0 and Pywinusb 0.4.2 to send raw data to an HID device.

import pywinusb.hid as hid def readData(data): print(data) device = hid.HidDeviceFilter(vendor_id=0xXXXX, product_id=0xXXXX).get_devices()[0] if not device: print ("No device found") else: print(device) device.open() report = device.find_output_reports() print(report) print(report[0]) buffer=[0x00]*65 #USB packet size buffer[0]=0x00 #report id buffer[1]=0x0A buffer[2]=0x2F buffer[3]=0x02 buffer[4]=0x03 buffer[5]=0x01 report[0].set_raw_data(buffer) report[0].send() device.set_raw_data_handler(readData) device.close()

The HID device receives the data, I already confirmed this.

My problem is that somewhere the byte array gets sorted from minor to major. I already confirmed this as well

Any ideas ?


Thank you

David DLC

[wavic]

You are using a list which is mutable. Try to send this: buffer = b'\x00\x0A\x2F\x02\x03\x01'
You should see struct module.