In a Software Event, the CPU will “strobe” an Event channel by inverting the
current value for one system clock cycle.
A Software Event is triggered on a channel by writing a '1' to the respective
Strobe bit in the appropriate Channel Strobe register:
- Software Events on asynchronous
channel l are initiated by writing a '1' to the ASYNCSTROBE[l] bit in
the Asynchronous Channel Strobe register (EVSYS.ASYNCSTROBE).
- Software Events on synchronous
channel k are initiated by writing a '1' to the SYNCSTROBE[k] bit in
the Synchronous Channel Strobe register (EVSYS.SYNCSTROBE).
Software Events are no different to those produced by Event generator peripherals with
respect to Event users: when the bit is written to '1', an Event will be generated on the
respective channel, and received and processed by the Event User.