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USB2ANY (HPA665) command description - PEC byte (Packet Error Check)

Alessio Gagliardi
Prodigy 105 points
Other Parts Discussed in Thread: USB2ANY, DRV10983

Hi All,

I want to write my program to read / write DRV10983 registers. I’d  like to use USB2ANY for that.

I need formats of USB2ANY commands.

Commands are sent to USB2ANY as USB packet and interpreted by MSP430 firmware to make I2C transactions.

I have looked at packets (by scope) and can guess most of formats (command codes, sequence numbers,..).

There is Packet Error Check (PEC) in packet. You could save me a lot of time providing information about how PEC calculated.

Which CRC8? Through which bytes? All 64 bytes in the packet? Why PEC is in byte 4?

Please help me to find how this PEC byte is calculated.

Thanks in advance.

NB: USB2ANY firmware version 2.7.0.0