CCS/LAUNCHXL-F28379D: Using SCIB in Idle-Line Multiprocessor Mode for programming booster pack over UART

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: BOOSTXL-CC3120MOD

Tool/software: Code Composer Studio

Hello, I'm trying to write some code that will be able to program a Boostxl-cc3120MOD over UART using my launchpad. To do this I need to configure SCIB to communicate through pins 18 & 19 in Idle-Line Multiprocessor Mode. I am having some trouble with the SCI modules not being able to output anything through the pins on the launchpad, using SCIA though the mini USB works fine however. I posted my code bellow, any suggestions as to what I'm missing would be appreciated. 

Cheers!

Device_init();
    SysCtl_setLowSpeedClock(SYSCTL_LSPCLK_PRESCALE_1);

    //
    // Disable pin locks and enable internal pullups.
    //
    Device_initGPIO();

    //
    // SCI Rx pin.
    //
    GPIO_setMasterCore(19, GPIO_CORE_CPU1);
    GPIO_setPinConfig(GPIO_19_SCIRXDB);
    GPIO_setDirectionMode(19, GPIO_DIR_MODE_IN);
    GPIO_setPadConfig(19, GPIO_PIN_TYPE_STD);
    GPIO_setQualificationMode(19, GPIO_QUAL_ASYNC);

    //
    // SCI Tx pin.
    //
    GPIO_setMasterCore(18, GPIO_CORE_CPU1);
    GPIO_setPinConfig(GPIO_18_SCITXDB);
    GPIO_setDirectionMode(18, GPIO_DIR_MODE_OUT);
    GPIO_setPadConfig(18, GPIO_PIN_TYPE_STD);
    GPIO_setQualificationMode(18, GPIO_QUAL_ASYNC);

    //
    // Initialize interrupt controller and vector table.
    //
    Interrupt_initModule();
    Interrupt_initVectorTable();

    //
    // Initialize SCIA and its FIFO.
    //
    SCI_performSoftwareReset(SCIB_BASE);

    //
    // Configure SCIA for echoback.
    //
    HWREGH(SCIB_BASE + SCI_O_CCR) &= ~(SCI_CCR_ADDRIDLE_MODE);
    SCI_setConfig(SCIB_BASE, DEVICE_LSPCLK_FREQ, 921600, (SCI_CONFIG_WLEN_8 |
                                                        SCI_CONFIG_STOP_ONE |
                                                        SCI_CONFIG_PAR_NONE));
    SCI_resetChannels(SCIB_BASE);
    SCI_resetRxFIFO(SCIB_BASE);
    SCI_resetTxFIFO(SCIB_BASE);
    SCI_clearInterruptStatus(SCIB_BASE, SCI_INT_TXFF | SCI_INT_RXFF);
    SCI_enableModule(SCIB_BASE);
    SCI_performSoftwareReset(SCIB_BASE);


    msg = 'A';
    HWREGH(SCIB_BASE + SCI_O_CTL1) |= (SCI_CTL1_TXWAKE);
    receivedChar[0] = (HWREGH(SCIB_BASE + SCI_O_CTL1));
    receivedChar[1] = HWREGH(SCIB_BASE + SCI_O_CCR);

    while(loopCounter)
    {
        HWREGH(SCIB_BASE + SCI_O_CTL1) = receivedChar[0];
        SCI_writeCharBlockingFIFO(SCIB_BASE, msg);
        while(HWREGH(SCIB_BASE + SCI_O_CTL1) == receivedChar[0]){}

        if(SCI_getRxFIFOStatus(SCIB_BASE)!=SCI_FIFO_RX0)
        {
            receivedChar[0] = SCI_readCharBlockingFIFO(SCIB_BASE);
            receivedChar[1] = SCI_readCharBlockingFIFO(SCIB_BASE);

            if(receivedChar[0]==0x00 && receivedChar[1]==0xCC)
            {
                loopCounter = 0;
            }
        }
    }
    SCI_performSoftwareReset(SCIB_BASE);
    ESTOP0;