Spi Configuration on EB tresos

[prasadrashinkar]

Hello,

I am trying to Configure Two Slave Devices With S32K344 on EB Tresos getting issues while configuring channels and SpiPhyunit please Share some solutions or examples to configure Two slaves on one SPI.

I am using EB Tresos  Design Studio 29.0.0 And doing this activity on the S32K344 board.

If anyone has such an example code, please share.

Thanks

#s32k344 #SPI #SPI Slave 

[danielmartynek]

Hi @prasadrashinkar,

I don't understand the use case.

Why do you need two Slave instances on one LPSPI module?

S32K344 has 6 LPSPI modules.

[prasadrashinkar]

Already other SPI are in use

[prasadrashinkar]

We want to configure Two Slaves, and we want to use those Using Chip Select. Can you please suggest a configuration or example for this use case?

[danielmartynek]

Hello @prasadrashinkar,

This use case does not make much sense. You could have two different configuration structures for the Slave device (with different chip select) but you would need to reconfigure the LPSPI module every time before the CS is asserted by the master.

If you need more SPI intances, you can use FlexIO to emulate SPI.

Regards,

Daniel

[prasadrashinkar]

We have configured two slaves (MSDI And L99DZ) as Slave devices to LSPI 3 of s32k344.

In the Snap below, we created two channels, two external devices, Two Sequences, Two Jobs, and one SpiPhyunit. Is this configuration correct?

And why we are not able to use one master and two slaves using a chip select?

[danielmartynek]

Refer to the RM, rev.9,

Chapter 70 Low Power Serial Peripheral Interface (LPSPI)

Section 70.6.1 LPSPI register descriptions.

PCS is configured in the Transmit Command register (70.6.1.16 Transmit Command (TCR)).

Thank you