Message CRC check in protocol working on top of USB HID

0
votes

Do i need to implement message CRC protection in protocol working on top of USB HID custom device? It seems to be USB packets already have CRC and i don't get corrupted reports(packets). So if my protocol message fits in 64 bytes i can omit CRC, right?

1
embeddedusbhid

1 Answers

3
votes

Correct. USB transfers have a 16-bit CRC on each packet and robust error handling so you shouldn't worry about implementing your own.