LAUNCHXL-F28379D: -> LAUNCHXL-F28379D SPI example code for Slave missing?

Hi there folks

I need to send data over SPI from one LAUNCHXL-F28379D to another LAUNCHXL-F28379D.

I am however confused at how to configure my second LAUNCHXL-F28379D to function as a slave given that the code in the main file looks like it' specifically for Mster function.

Following the example code titled spi_loopback_cpu01, I have changed the following elements of code in the F2837xDSpi.c file:

// Enable master (0 == slave, 1 == master)
// Enable transmission (Talk)
// Clock phase (0 == normal, 1 == delayed)
// SPI interrupts are disabled
SpiaRegs.SPICTL.bit.MASTER_SLAVE = 0;
SpiaRegs.SPICTL.bit.TALK = 1;
SpiaRegs.SPICTL.bit.CLK_PHASE = 0;
SpiaRegs.SPICTL.bit.SPIINTENA = 0;

And then I see this in the main Example_2837xDSpi_FFDLB.c file:

void main(void)
{
   Uint16 sdata;  // send data
   Uint16 rdata;  // received data

//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
//
   InitSysCtrl();

//
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// Setup only the GP I/O only for SPI-A functionality
// This function is found in F2837xD_Spi.c
//
   InitSpiaGpio();

//
// Step 3. Clear all interrupts:
//
   DINT;

//
// Initialize PIE control registers to their default state.
// The default state is all PIE __interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
//
   InitPieCtrl();

//
// Disable CPU __interrupts and clear all CPU __interrupt flags:
//
   IER = 0x0000;
   IFR = 0x0000;

//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the __interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
//
   InitPieVectTable();

//
// Step 4. Initialize the Device Peripherals:
//
   spi_fifo_init();     // Initialize the SPI FIFO

//
// Step 5. User specific code:
//
   sdata = 0x0000;
   for(;;)
   {
        //
        // Transmit data
        //
       sdata=21; // We just wanted to see if this fella would send something and then we'd bring back the counter functionality
       spi_xmit(sdata);

        //
        // Wait until data is received

        while(SpiaRegs.SPIFFRX.bit.RXFFST !=1) { }


//         Check against sent data

        rdata = SpiaRegs.SPIRXBUF;
        if(rdata != sdata)
        {
            error();
        }

   }
}

What part of this section of code should I change so that my slave reads and returns whatever it receives?

Chur