topic Re: inputcatch IPWM on EMIOS0 MPC5748G in MPC5xxx

inputcatch IPWM on EMIOS0 MPC5748G

Ben_500 — Wed, 05 Feb 2025 00:37:14 GMT

I'm using and I want to get 4 PWM signals from CH 10, 11, 12, 13 EMIOS0
thanks to sample code I can get 1 PWM signal from EMIOS from CH 13.

And for other PWM input,
EMIOS_0_CH10_CH11_IRQhandler , MIOS_0_CH12_CH13_IRQhandler is not entered.

and eMIOS_UC_0.UC[t_channel].S.R is not updated.

for now, I copied and pasted for other IPWM below code.
(Of course, I changed each index and channel number)

t_Index = 4;

t_Channel = 13;

eMIOS_UC_0.UC[t_Channel].C.B.EDPOL = vEcaleMIOS_Info[t_Index].Edpol_u8;

eMIOS_UC_0.UC[t_Channel].C.B.EDSEL = vEcaleMIOS_Info[t_Index].Edsel_u8;

eMIOS_UC_0.UC[t_Channel].C.B.FEN = 0;

eMIOS_UC_0.UC[t_Channel].A.R = 0x0000FFFF;

eMIOS_UC_0.UC[t_Channel].C.B.IF = 1;

eMIOS_UC_0.UC[t_Channel].C.B.BSL = 0;

eMIOS_UC_0.UC[t_Channel].C.B.MODE = vEcaleMIOS_Info[t_Index].Mode_u8;

eMIOS_UC_0.UC[t_Channel].C.B.UCPRE = 0;

eMIOS_UC_0.UC[t_Channel].C.B.UCPREN = 1;

INTC.PSR[MCALEMIOS_0_CH12_CH13_PSR].R = PRC_SEL_CPU0 | PRC_PRI(7);

eMIOS_UC_0.UC[t_Channel].C.B.FEN = 1;

Can you help this??

Re: inputcatch IPWM on EMIOS0 MPC5748G

petervlna — Thu, 06 Feb 2025 07:51:10 GMT

Hello,

This example show how to create shifted PWM channels. Simply add more channels as you like by following the 2 channels configured in example.

Code can be reused on MPC5748G.

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5746C-eMIOS-Shifted-PWM-GHS716/ta-p/1159152

Best regards,

Peter

Re: inputcatch IPWM on EMIOS0 MPC5748G

Ben_500 — Thu, 06 Feb 2025 23:00:08 GMT

First of all, Thanks for your support!!
but is it can be applied on IPWM input catch?
I think current source code is made for the modes of EMIOS are OPWM like below
eMIOS_UC_0.UC[0].C.B.MODE = 0x60; // OWPMB mode

what I want is to get Freq and Duty in BSW from signal box.

Re: inputcatch IPWM on EMIOS0 MPC5748G

Ben_500 — Fri, 07 Feb 2025 06:22:20 GMT

And I also found that each IRQhandler is not active.
So, I want to know why the IRQhandler is not active inspite each port pin received the PWM input.

I have no idea why eMIOS_UC.UC[channel].S.R is not set as 1

Re: inputcatch IPWM on EMIOS0 MPC5748G

petervlna — Fri, 07 Feb 2025 08:26:59 GMT

Hello,

what I want is to get Freq and Duty in BSW from signal box.

Please state clearly your requirements

like : I want 4 PWM signals to be captured by eMIOS, and generated 2 PWM outputs.

on each period I want to rise interrupt / DMA etc....

So I see clearly what you are looking for, then I can guide you/give hints.

Best regards,

Peter

Re: inputcatch IPWM on EMIOS0 MPC5748G

Ben_500 — Sun, 09 Feb 2025 22:46:50 GMT

Sorry for unclear requirement.

I want 4 PWM input capture by eMIOS.
for input capture I set the channel No 10, 11, 12, 13 in module 0 from Pin port PF12, PA0, PG7, PG9

but CPU get just 1 PWM input despite of using same code.

It seems that CPU cannot get imput signal from Pin Port initialization.
I couldnt clarify which part of code is wrong.(Port initialzation? not active Vector table?)

So Please tell me PWM input capture sequence spcifically.

Still unclear to explain,,, Sorry for the inconvenience

Re: inputcatch IPWM on EMIOS0 MPC5748G

petervlna — Thu, 13 Feb 2025 09:51:53 GMT

Hello,

I want 4 PWM input capture by eMIOS.
for input capture I set the channel No 10, 11, 12, 13 in module 0 from Pin port PF12, PA0, PG7, PG9

Ok, looking at reference manual on channels 10,11,12,13 can be set input capture on eMIOS0 and eMIOS1:

but CPU get just 1 PWM input despite of using same code.

i have no idea what code you have used.

But simply set the pins for input in SIUL2:

Looking at IO_MUX table I see following ports available:

No 10, 11, 12, 13 in module 0 from Pin port PF12, PA0, PG7, PG9

that could express your issues as only PA0 is mapped to the eMISO from your pins.

Best regards,

Peter

Re: inputcatch IPWM on EMIOS0 MPC5748G

Ben_500 — Thu, 13 Feb 2025 22:34:02 GMT

For now, I think Hw pin configuration would be answer.

Thanks a lot!!