S32KのトピックRe: Synchronizing multiple EMIOS instances

Synchronizing multiple EMIOS instances

RChatterjee — Tue, 28 May 2024 16:40:37 GMT

Is it possible to synchronize multiple EMIOS instances together? Currently, I am running EMIOS 1 and EMIOS 0 together to generate some PWMs, but there is a phase difference,which is variable and i cannot get rid of.

From the following answer: https://community.nxp.com/t5/S32K/Synchronizing-eMIOS-instances/td-p/1423858, I see GTBE bit sets it for one emios instance, which I have done and works well. Can I do this somehow across multiple instances?

Re: Synchronizing multiple EMIOS instances

Senlent — Wed, 29 May 2024 08:15:02 GMT

Hi@RChatterjee

yes,it can be done by enable the emios_mcl->globatimebase feature.

Re: Synchronizing multiple EMIOS instances

RChatterjee — Wed, 29 May 2024 11:07:13 GMT

Hi @Senlent ,

This is my config. I have it enabled for EMIOS 0 and EMIOS 1. However, the phase difference exists.

Should this not happen then?

PFA design files. The phase difference is between any of the emios 0 and emios 1 channels.

Regards,

Rounak Chatterjee.

Re: Synchronizing multiple EMIOS instances

Senlent — Thu, 30 May 2024 06:48:02 GMT

Hi@RChatterjee

Sorry for the first reply and I made some modification according to the demo your provided:

1.Clean all eMIOSn->MCR.GTBE at beginning.

2.Enable eMIOSn->MCR.GTBE after init eMIOS_MCL

IP_EMIOS_1->MCR |= eMIOS_MCR_GTBE_MASK;

3.Test Result:

PTD20 & PTB17