Function address as PPI "Task End-Point"

[Sébastien Despont]

Hi,

Is it possible to give a function address to the "Task End-Point" of a PPI channel?

Like :

    err_code = sd_ppi_channel_assign(PPI_CHAN0_TO_TOGGLE_LED,
                           &(NRF_TIMER1->EVENTS_COMPARE[0]),
                           &(myTestFunction));

Or the only accepted TEP are timer and GPIOTE tasks?

Thanks

[Ole Morten]

Any task is a valid end-point for a PPI channel (not just tasks in timers and GPIOTE), but not a code function. The PPI can only be used to connect tasks and events from different peripheral blocks inside the nRF51, not code.

[Sébastien Despont]

Thanks for your quick answer.

Where can I found a list of available tasks which can be bound to the PPI TEP?

Best Regards

[Ole Morten]

There isn't a complete list of all tasks, but in the nRF51 Series Reference Manual, all tasks for each peripheral are listed at the start of each peripheral's register table. See for example table 18 for the radio, table 19 for the TIMERs, table 36 for the TWI and so on.

[Sébastien Despont]

Ok, thanks.

[Sébastien Despont]

One last question : is it possible to define several tasks as PPI TEP to execute more than one task at the same time?

Like Timer1 stop AND Timer2 start AND GPIOTE task

Best regards