RADIO implements a simple counter that can be configured to generate an event after a specific number of bits has been transmitted or received.
By using shortcuts, this counter can be started from different events generated by RADIO and count relative to these events.
The bit counter is started by triggering the BCSTART task, and stopped by triggering the BCSTOP task. A BCMATCH event will be generated when the bit counter has counted the bits specified in register BCC. The bit counter will continue to count bits until the DISABLED event is generated or until the BCSTOP task is triggered. After the BCMATCH event, the CPU can reconfigure the value BCC for new BCMATCH events within the same packet.
The bit counter can only be started after RADIO has received the ADDRESS event.
The bit counter will stop and reset for the tasks BCSTOP, STOP, or DISABLE, or the event END.
The following figure shows how the bit counter can be used to generate the BCMATCH event in the beginning of the packet payload, and again generate a second BCMATCH event after sending 2 bytes (16 bits) of the payload.