TMS570LC4357: SPI Communication Stuck

Hello,
Are you using digital loopback? Please check your Pinmux settings.

Best regards,
Miro

Yes it is digital loopback.

Hello,
Analog-loopback is at pin-level and digital loopback is internal to the SPI module.
Please check your PINMUX settings. Check Master/Slave mode. Set unused pins of SPI module as GIO.
You can check with oscilloscope whether signal is going out from SPI.

Best regards,
MIro

Hello,
Do you have progress with the issue on SPI communication?

Best regards,
Miro

Yes!

The prescaler value was 74, thus the clock division would be by 75, the clock wasn't going out then, however it should with 1 MHz, as the VCLK is 75 MHz,
I changed the prescaler value to 0 for now, the clock is going out, I am not sure if it is with the correct value,
I suppose the transmission is now working.

But for the reception, I configured the Rx interrupt through Halcogen, but it is not coming,
I enabled the RXINT and selected the level, but the interrupt is not coming,
I test the Rx through connecting SPI1 as master to SPI3 as slave, and after configuring the Rx interrupt for SPI3, but not working so far.

Yes,
I was already enabling the SPI3 in VIM as IRQ,
I also checked, I was already calling _enable_IRQ_interrupt_ to enable the IRQ.

I tried that project, however still SPI3 Rx interrupt is not coming!

Actually the configuration in that project was similar to the one I have, the CLK and the MOSI are changing as below:

CLK

MOSI

Note: for HW, am just connecting the CLK from SPI1 to SPI3 to just test the SPI3 Rx interrupt.

When I stop, with that example, it always shows the following line of code, although the clock is coming out:
while((spi->FLG & 0x00000100U) != 0x00000100U){}