S32 SDKのトピックS32K1 using Lpit to periodically trigger ADC using RTDs

S32K1 using Lpit to periodically trigger ADC using RTDs

hns80 — Fri, 13 May 2022 02:30:48 GMT

I'm having trouble modifying the Adc_Pdb_Ip example to trigger the ADC from the LPIT.

I'm not sure what I'm missing. I tried looking at the older examples using the SDK and don't see anything missing from what I'm doing with the RTDs.

My project is attached. What do I need to change to get the lpit to trigger the ADC conversion?

Re: S32K1 using Lpit to periodically trigger ADC using RTDs

PetrS — Tue, 17 May 2022 13:01:33 GMT

Hi,

should the LPIT trigger PDB-ADC? As the example sets the PDB too and by default ADC is set to be triggered from PDB. There is check box "Enable SIM ADC source selections" in ADC component which allows you to change HW trigger to be done from TRGMUX (LPIT).
So if LPIT-PDB-ADC sync should be done then TRGMUX should be set to have

BR, Petr

Re: S32K1 using Lpit to periodically trigger ADC using RTDs

hns80 — Thu, 19 May 2022 18:23:29 GMT

I used the tips you provided to make the example work as intended. It now triggers the ADC conversion every 10ms.

I attached the sample project in case anyone wants to see a sample implementation