How to periodically sample a single ADC channel using S32K146

[teccl]

Hello,

I am working with the S32K146 microcontroller and would like to set up periodic sampling of a single ADC channel. Is there a method to implement periodic sampling on this microcontroller, perhaps using the PDB? I reviewed the ADC hardware triggering method that uses PDB to trigger the ADC conversion; the PDB timer is restarted after the ADC conversion is read, but with this method, the sampling period is slightly longer than the PDB delay time. What would be the best method to do this? I read in the reference manual that the PDB has a "back-to-back"  mode, but I believe this is for reading multiple channels in sequence rather than reading a single channel periodically.

[Robin_Shen]

Hi 

If you don't need to ADC sample synchronously with PWM(FTM), just want to ADC sample one channel periodically. Please refer to the adc_low_power_s32k146 demo project of S32K1 SDK. LPIT was selected to periodically trigger ADC sample in that project.

Best Regards,
Robin
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