S32k144 EVB Touch Pads

[manuelmoreno-eg]

Hi,

Perhaps my question is pretty stupid, but how to read touch pads in S32k144 EVB?

Are simple digital inputs?

Thanks a lot,

Manuel

[jiri_kral]

Hi Manuel, 

for touch pads is easiest way how to use them link in your project TS_S32K144.a library (located in [YOUR_S32DS_INSTALL_PATH]\S32SDK_S32K14x_EAR_0.8.5\examples\S32K144\demo_apps\touchsense\SDK\middleware\

You can use  electrodeTouchSenseInit() function and  electrodeTouchQualified[ELECTRODE_NUM] variable from that library. If it is equal 1 - pad is touched - otherwise untouched. 

You can also look on example project - touchsense_s32k144 - which is part of S32DS_EAR_SDK_v0.8.5 - but the example includes FreeMaster code and is quite huge. 

Jiri

[danielmartynek]

Hi,

SDK v0.8.5 contains Touchsense demo application.

It converts actual capacitance of the electrodes to equivalent voltage sampled by ADC.

The below picture is taken from doxygen/touchsense.dox file in the project folder.

Regards,

Daniel

[hajianik]

My project is using S32K with the PE.

Now the SDK is S32SDK_S32K14x_EAR_0.8.4 .

Not sure how to switch to S32SDK_S32K14x_EAR_0.8.5.

Can someone help me with that?

Thanks,

Koorosh Hajiani