S32K348 gpt config

[youngkin]

hello:

I config the gpt, the gpt clock is 40M. and  I start the gpt(Gpt_StartTimer(GptConf_GptChannelConfiguration_GptChannelConfiguration_0, 10000000U);),   I measure GPT time ，it is 200ms。

but i think the gpt time should be 250ms（（1/40000000）   * 10000000 = 250ms)

I Set the clock of gpt  as follow:

How to confirm that the clock source currently being used is an external crystal oscillator(16M)? Currently,  the GPT clock   seems FIRC(48M).

the mcu clock  show as follow：

Please take some time to help answer, thank you ! 

[VaneB · Accepted solution]

Hi @youngkin 

I have created a project based on the configurations you shared and tested it on the S32K3x8EVB board. I was able to successfully achieve the desired 250ms timing.

To help ensure that there are no missing configurations, initializations, or code elements, I am attaching my .mex file along with the main source file. This will allow you to compare and validate against your setup.

BR, VaneB