CC2541: CC2541 Proprietary Mode - Packet CRC Calculation

some_iot_developer

Part Number: CC2541

Hello,

When using the CC2541 proprietary mode - What is the CRC calculated over? Is the header included? The address byte if used?

Thank you.

over 9 years ago

0 JXS over 9 years ago

TI__Guru** 105180 points

Hello,

This is based on the input to the BSP. Please see 25.4.4 "Coprocessor Mode" in the CC254x UG (SWRU191).

Best wishes

0 some_iot_developer over 9 years ago in reply to JXS

Prodigy 30 points

I was referring to the CRC calculated over incoming RF packets.
Specifically in auto mode - Trying to understand if the CRC includes the 9/10-bit header and/or the ADDRESS byte.

Thanks.

0 Eirik V over 9 years ago in reply to some_iot_developer

TI__Guru 56590 points

Hello IoT Developer,
The CRC is always calculated over header, address byte (if present) and payload. Sync word is also included (SW) if the SW_CRC_MODE bit field in the FRMCTRL0 register is set. These are transferred bit-by-bit into the CRC module to compute the CRC checksum.

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CC2541: CC2541 Proprietary Mode - Packet CRC Calculation