EVM430-FR6047: SERIAL UART A not transmiting

Part Number:EVM430-FR6047

Hi,

Brief: Serial eUSCI_A0 does not transmit any serial data to host PC. 

I have started developing with the EVM and tried to configure and use serial UART on eUSCI_A0. On the EVM it should communicate thru the ezFET once the pins on header J2 are populated (shown below): 

I have configured eUSCI_A0 register as shown:

void serial_init(void)
{

    EUSCI_A_UART_initParam param = {0};
    param.selectClockSource = EUSCI_A_UART_CLOCKSOURCE_SMCLK; //SMCLK=> (DCO)16MHz/DIVS_4 -------- ACLK=LFXTCLK=37.768 Khz
    param.clockPrescalar = 69; //57600 on 4 MHZ
    param.firstModReg = 0;
    param.secondModReg = 4;
    param.parity = EUSCI_A_UART_NO_PARITY;
    param.msborLsbFirst = EUSCI_A_UART_LSB_FIRST;
    param.numberofStopBits = EUSCI_A_UART_ONE_STOP_BIT;
    param.uartMode = EUSCI_A_UART_MODE;
    param.overSampling = EUSCI_A_UART_LOW_FREQUENCY_BAUDRATE_GENERATION;

     // Sets P2SEL1.x 
     GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P2, GPIO_PIN0 + GPIO_PIN1, GPIO_SECONDARY_MODULE_FUNCTION);// P2.0 UCA0TXD and P2.1 UCA0RXD

    if (STATUS_FAIL == EUSCI_A_UART_init(EUSCI_A0_BASE, &param)) {
        return;
    }

    PMM_unlockLPM5();

    EUSCI_A_UART_enable(EUSCI_A0_BASE);

    EUSCI_A_UART_clearInterrupt(EUSCI_A0_BASE, EUSCI_A_UART_RECEIVE_INTERRUPT);
    EUSCI_A_UART_clearInterrupt(EUSCI_A0_BASE, EUSCI_A_UART_TRANSMIT_INTERRUPT);
    EUSCI_A_UART_enableInterrupt(EUSCI_A0_BASE, EUSCI_A_UART_TRANSMIT_INTERRUPT);                     // Enable interrupt
    // Enable USCI_A0 RX interrupt
    EUSCI_A_UART_enableInterrupt(EUSCI_A0_BASE, EUSCI_A_UART_RECEIVE_INTERRUPT);                     // Enable interrupt

    __enable_interrupt();
}

Here is the clock init routine:

void clock_init(void)
{
/*
* Configure CS module
* MCLK = 16 MHz from DCOCLK
* SMCLK = 8MHz from DCOCLK
* ACLK = LFXTCLK 32.768 KHz
*/
// Unlock CS registers
CSCTL0_H = CSKEY >> 8;

// Set DCO to 16MHz
CSCTL1 = DCORSEL | DCOFSEL_4;

// SELA selects ACLK source
// SELS selects SMCLK source
// SELM selects MCLK source
// For EVM HFXCLK = 8MHz, LFXCLK = 32.768 kHz,
// Set ACLK = LFXTCLK, SMCLK = DCO, MCLK = HFXTCLK
CSCTL2 = SELA__LFXTCLK | SELS__DCOCLK | SELM__HFXTCLK;

// DIVA selects ACLK source divider
// DIVS selects SMCLK source divider
// DIVM selects MCLK source divider
CSCTL3 = (DIVA__1 | DIVS__4 | DIVM__1);

CSCTL4 &= (HFXTDRIVE_0);
CSCTL4 &= (HFXTBYPASS_0);
CSCTL4 |= (HFFREQ_1);
CSCTL4 |= (LFXTDRIVE_3);
CSCTL4 |= (LFXTBYPASS_0);

CSCTL4 &= ~(HFXTOFF);
CSCTL4 &= ~(LFXTOFF);

// Lock CS register
CSCTL0_H = 0; //
}

On debug the UCA0 Registers are shown below:

MAIN:

uint8_t RXData = 0, TXData = 0;
uint8_t check = 0;

int main(void) {
   uint32_t i = 0;
   TXData = 0x01;

   while(1){
      serial_trasmitDataByte(TXData);
      // TXData = TXData+1;
      for(i = 0; i < 100000; i++);
      GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);
   }

return (0);
}



//******************************************************************************
//
//This is the USCI_A0 interrupt vector service routine.
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_A0_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(USCI_A0_VECTOR)))
#endif
void USCI_A0_ISR(void)
{
   switch(__even_in_range(UCA0IV,USCI_UART_UCTXCPTIFG))
   {
      case USCI_NONE: break;
      case USCI_UART_UCRXIFG:
         RXData = EUSCI_A_UART_receiveData(EUSCI_A0_BASE);
         if(!(RXData == TXData)) // Check value
         {
           while(1);
         }
         check =1;
         break;
     case USCI_UART_UCTXIFG:
         TXData = TXData+1;
         break;

   }
}

The interruption is running as expected, but I receive no data on the host PC serial communication. Am I missing something??


Also tried using the MSPWARE example (msp430fr60x7_euscia0_uart_03.c) code with no success. Same happens, registers are configured but no data is received