CCS/TMS570LS12xx: TMS570LS12xx MibSPI Slave Mode example

Tool/software: Code Composer Studio

Hello,

I am trying  to configure my Device TMS570LS1227 as a Slave with MibSPI1, I didn't manage it yet.

I made the necessary configuration on Halcogen: 

In MibSPI1 Tab:

MibSPI Global:
     I Unchecked Master Mode and internal clock boxes to configure the device in slave mode.

MibSPI Port:
    I Uchecked the direction boxes for CS and SIMO and CLK (Input configuration) and checked the ones for SOMI and ENA (Output configuration)

In PINMUX Tab:

     I Checked  MibSPI1 peripheral, and I fixed the conflict.

More information:

I am using 16 bits transmission word length, and 2 as length of transfer group, and I am using one shot transfer and Buffer mode 5.
My Master works properly after checking it with the oscilloscope.

This the main  I am using in Code Composer Studio:

#include "sys_common.h"

#include "mibspi.h"
#include "system.h"

int main(void)
{
/* USER CODE BEGIN (3) */

uint16 tx[2]= {0x0077, 0x0001};
uint16 rx[2];

mibspiInit();

while (1)
{

mibspiGetData(mibspiREG1, 0, rx);
mibspiSetData(mibspiREG1, 0, tx);
mibspiTransfer(mibspiREG1, 0);
while(!(mibspiIsTransferComplete(mibspiREG1, 0)));
}

return 0;
}

The master receives nothing, and when I checked with the oscilloscope the SOMI Pin, I did't visualize any data (I was keeping the CLK and CS of the Master connected to the MCU) .

I managed very well to configure the device as a master with MibSPI1 before, but I didn't do as a slave.

Am I missing something or Have I something wrong ? 

I didn't find an example for TMS570LS1227 device. the one in Halcogen for SPI looks different. If there is an example of CCS code, that would be great.

 A quick reply would be highly appreciated. Thank you in advance!