SENT Transmitter channels

[UmaMaheswaraReddy]

Hi,

In S12ZVC micros observed only one SENT TX module. If we need 4/more seperate sent channels in a single micro, how can we accommodate these types of situations?

From the below NXP link details my understanding is without actual SENT transmitter we can transmit SENT pulse patterns using below S32K144 example code. I am unable to understand below link attached code.

https://community.nxp.com/t5/S32K-Knowledge-Base/Uart-to-SENT-protocol-transmitter/ta-p/1129291

Do we have similar above link example code for S12ZVC micros. I have S12ZVC - DEVKIT EVB. I want to implement 4 SENT TX separate channels. In S12ZVC micros I observed only one SENTTX. Do we have any alternate option to accommodate this.

Do we have any micro/EVB with 4 separate SENT tx channels. 

[danielmartynek]

HI @UmaMaheswaraReddy,

The S32K1xx series has FlexIO module that can be used to emulate the SENT protokol.

And for the newer S32K3xx we have also RTD FlexIO SENT Driver.

The S12Z MagniV series does not have FlexIO.

It would need to be emulated using GPIO or the TIM module, but we don't have any example / document for that.

Regards,

Daniel

[UmaMaheswaraReddy]

Hi Daniel,

In S32K3xx series RTD, we observed FLEXIO SENT driver for SENT RX. Do we have SENT driver example for SENT TX?

Thanks,

Y Uma Maheswara Reddy.

[danielmartynek]

Hello @UmaMaheswaraReddy,

Yes, you are right, this is just for the receiver.

I sent you one S32K1xx SENT TX FlexIO example privately.

Based on the information I have there should be an S32K3xx SENT TX FlexIO example next week.

BR, Daniel

[UmaMaheswaraReddy]

Hi Daniel,

Thank you for the info. 

We can achieve SPC (SENT with Trigger) with the TIM and PWM (Without actual SENT transmitter). As per my understanding from the S12ZVC pins summary we have only two pins (PT2,PT3) with TIM and PWM combo. So maximum 2 SPC (SENT with trigger) we can implement, correct?

I don't see any other pin supporting both PWM and TIM. Please correct me if I am wrong.

My requirement is I need to implement 6 SPC (SENT with trigger) in a single board.

Only PT2 and PT3 with TIM and PWM combination.

Thanks,

Y Uma Maheswara Reddy.

[danielmartynek · Accepted solution]

Hi @UmaMaheswaraReddy,

I can't confirm that it is possible to emulate SENT using TIM and PWM modules, because we don't have any demo or documentation in this regards. But yes, there are just two pins that are shared by the two modules.

BR, Daniel