I'm using XBee Pro DigiMesh 2.4 modules with the latest firmware (8073).
According to the documentation, if the RP register (RSSI PWM timer expiration) is set to 0xFF, this "permanently enables the pin; when configured in this way, it will always reflect the RSSI value of the last-received data packet."
However, on my modules, when the RP register is set to 0xFF, the PWM output times out after 25.5 seconds.
I assume this is a bug. Is there a workaround?