S32KのトピックS32K146 ADC project examples wrong readings

S32K146 ADC project examples wrong readings

csava — Tue, 16 Nov 2021 13:08:38 GMT

adc.jpg

Hello,

I have the EVB S32K146 and I am trying to use adc_hwtrigger_s32k146 and adc_swtrigger_s32k146 and the readings are wrong.

No matter the value of the potentiometer, the output toggle randomly between 0.0109V and 0.0122 V

I have no problem using adc_pal_s32k146. Here the values are read correctly in SW and HW trigger mode.

I would use adc_pal_s32k146 for my project but the issue is that the ADC PAL driver has no support for DMA.

Could you please guide me on how to solve this issue?

Best regards,
Claudiu

Re: S32K146 ADC project examples wrong readings

Senlent — Wed, 17 Nov 2021 03:09:02 GMT

Hi@csava

Regarding the demo "adc_hwtrigger_s32k146",I made a test on S32K146EVB, and it works fine on my side.

Senlent_0-1637117220311.png

Then test "adc_swtrigger_s32k146",

Senlent_2-1637117555436.png

Both examples work well on S32K146EVB, so I'm pretty sure there should be no problem with these two routines, may be you can try check if the code has been modified or other reasons.

Those tests based on :

SDK: S32K1xx RTM SDK 3.0.0

IDE: S32K Design Studio for ARM 2018.R1

Hardware:S32K146EVB

BR!

Jim,

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Re: S32K146 ADC project examples wrong readings

csava — Wed, 17 Nov 2021 17:50:53 GMT

Thank you,

The issue was that I did not generate the files for the Procesor Code, after the project was created.

Best regards,
Claudiu