BOOSTXL-AFE031-DF1: Modify the RX frame size for Packetize function

Tool/software:

Hello,

I have a small question concerning the packet reception software in the C2000 examples for the AFE031: boost_afe031_f28379d_rx

I modified the transmission software to send 9 packets of 8 bits instead of 3 packets of 11 bits in the example (based on boost_afe031_f28379d_dacmode)

So far, no problem, I'm observing my frame on the oscilloscope, everything is consistent, but I have a doubt about the behavior of a function in the reception software.

My modifications are as follows:

But the result in the “packet_sum” variable is not what was expected. It seems that the Packetize(...) function only takes into account the first 33 bits.

In debug, if I place a breakpoint before the Packetize function and modify data within the first 33 bits of the "rxMessage", the packet_sum is changed at the function's output, whereas if I modify data after the first 33 bits, the packet_sum is unchanged.

while(1)
{
    //
    // Begin receiving data
    //
    Start_Receiving();

    //
    // wait for message to be received, timeout if not received within set time
    //
    while(!msgFull){}

    msgFull = 0;    // Clear the msgFull flag

    //
    // Stop receiving data
    //
    Stop_Receiving();

    //
    // Packetize the received message, clears the received message buffer
    //
    
    // In debug, before this function, I can see 72 bits received
    Packetize(rxMessage, packet); 
    // And after, the first 33 bits are cleared by the function but not the ones after

    //
    // LED indication of received packet
    //
    Visual_Indication();

    //
    // software breakpoint after receiving full message
    //
    //asm("   ESTOP0"); // Uncomment to receive only one packet
}

Have I forgotten something or does the packetize function only work for 33bits received?

Thanks for your help!