S32KのトピックIPM Mode Configuration in S32k3

IPM Mode Configuration in S32k3

vusal — Tue, 09 Jan 2024 22:59:16 GMT

I am working on a bare-metal IPM mode project for s32k3. The reference manual has sufficient amount of information on the output mode initialization; however, lacking in input mode configuration. Any idea how I can configure and run IPM/IPWM mode in s32k3 micros? Thanks!

Re: IPM Mode Configuration in S32k3

PetrS — Wed, 10 Jan 2024 13:14:28 GMT

Hi,

in fact the init is very similar for input mode as well. Step 2 is needed if IPM/IPWM channel will run from any global or local counter bus. For step 3 you will omit writing to A/B register and need to select Cn[EDPOL] value. If channel internal counter is selected (BSL=3), then channel prescaler have to be set too, as shown.

BR, Petr

Re: IPM Mode Configuration in S32k3

vusal — Wed, 10 Jan 2024 14:29:38 GMT

Hi @PetrS ,

Thank you for your message. Sounds good on the initialization.

I'd also appreciate some guidance on reading values from A and B in IPM/IPWM mode. Thanks!

Best,
Vusal

Re: IPM Mode Configuration in S32k3

PetrS — Thu, 11 Jan 2024 07:44:15 GMT

Hi,

once channel flag is set, indicating capture is done, you should read register A first then register B to get coherent data.

BR, Petr

Re: IPM Mode Configuration in S32k3

vusal — Thu, 11 Jan 2024 20:34:59 GMT

Hi @PetrS ,

Thanks for your help! It worked for me.

Best,
Vusal