timpwmadc.c It is perfect (wonderfull!) idea to use programmable system PPI (EEP->TEP+FORK) alternative PGA.
But I get some problems:
I tried to program a TIM3 to generate an TIM3_event_ CC[n] (its ok) that would trigger task
NRF_PWM0->TASKS_SEQSTART[0] (dma sequence PWM0 in wave mode with 4 channels).
Then I programmed PPI to connect PWM0_EVENT_PWMPERIODEND to SAADC->TASKS_SAMPLE with DMA.
But when I tried to stop PWM with SHORTS after SEQEND[0] and to change PWM0->COUNTERTOP every time I get an event like NRF_PWM0->TASKS_SEQSTART[0] and so on.
In result | get two PWM sequencies - first when I change PWM0->COUNTERTOP after PWM_STOPPED and second when TIM3_event_ CC[n](always generated). If I not use SHORTS to stop PWM_SEQUENCE, I see regular events PWM0_EVENT_PWMPERIODEND after PWM_SEQUEND[0] until I stop PWM0.
I tried to use SDK11 (NRF52832) functions and tried to use direct access to periferial registers but...
And wishes:
more PPI channels (may be another block of PPI registers), more RTC (low power timers/counters) more serial interfaces (especially UARTs) faster and more accurate ADC with scan all enabled channels on single event, faster core clock - Only real events can require an exact clock
- EVENT->FAST RESPONSE -> SLEEP(no fast clock at all)
more RAM and........
You made VERY NICE series of microcontrollers +RADIO
