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CC2530: AF_REGISTER failure

Part Number: CC2530

Hi,

Our coordinator reset (over the MT interface) consists of the following steps:

  1. Hard resetting the coordinator using the RS pin
  2. Set channel and PAN ID using ZB_WRITE_CONFIGURATION
  3. SYS_RESET_REQ with type = 1
  4. AF_REGISTER
  5. SAPI_REGISTER
  6. ZB_START_REQ

NOTE: The system waits for the confirmation indication after every step before proceeding to the next

This morning, once, AF_REGISTER returned 0x7D. I looked through the coordinator ZNP firmware for that returned code, but I could not find any result.

What does response code 0x7D mean for AF_REGISTER?

Also, the coordinator is running ZStack 2.6.1