Hello, When I call TASK_START in SPI Master it does not start a transfer. According to registers all seems to be set.
I found what was the problem. When I called TASKS_SUSPEND at the end of previous transfer it effectively blocked TASK_START. I did fix it by calling first TASK_RESUME (it does not harm anything if this is called even when TASK_SUSPEND was not called). And only then calling TASK_START.
My questions are:
Are you aware that it is quite hell to debug SPIM module when this SUSPEND bit is not visible in registers?
Are you going to add register (for example EVENTS_SUSPEND) bit so this state is visible during debugging? so user could see why the SPIM block is not started...
Maybe would you think of changing TASK_START behavior so in future chip it would override TASKS_SUSPEND? To me this might make sense...
Would you add this to nRF52832 documentation? Tragically TASKS_SUSPEND and TASKS_RESUME are only in table 68 but there is no description of behavior. So one even would not get the important information that TASK_SUSPEND would prevent TASK_START. At least this could (an IMO shall) be quickly done...