Ports are configured first,(so that individual init functions for I2C, ADC, UART, can reconfigure the ports as they want them.

After all inits are completed EA is enabled

Here is the init code for the UART. nothing out of the ordinary I would think, most of this as per Code Architect (I think - it has been a while since I looked at what it generates)


Regards

Marshall

void uart_init(void){

    //turn on UART
    PCONA &= ~0x02;
    // configure UART
    // clear SMOD0
    PCON &= ~0x40;
    SCON = 0x50;

    // set or clear SMOD1
    PCON &= 0x7f;
    PCON |= (0 << 8);
    SSTAT = 0xE0;  //enable double buffering for a bit more resiliency

    // enable break detect
    //AUXR1 |= 0x40;

    // configure baud rate generator
    BRGCON = 0x00;

   //set speed (19200)
   BRGR0 = 0x70;
   BRGR1 = 0x01;



    BRGCON = 0x03;

    // TxD = push-pull, RxD = input
    P1M1 &= ~0x01;
    P1M2 |= 0x01;
    P1M1 |= 0x02;
    P1M2 &= ~0x02;




   // Setup ring buffers.
    s_rxRingEmpty = 1;
    s_txRingEmpty = 1;
    s_rxWrIdx     = 0;
    s_rxRdIdx     = 0;
    s_txWrIdx     = 0;
    s_txRdIdx     = 0;

    // set receive isr priority to 0
    IP0 &= 0xEF;
    IP0H &= 0xEF;

    IP0 |= 0x10;
    IP0H |= 0x10;



    // enable uart receive interrupt
    ESR = 1;


    //set tx priority to high
    IP1 |= 0x40;
    IP1H |= 0x40;


    // enable uart transmit interrupt
    EST = 1;

    //clear any Flags that may have been set during init.
    RI = 0;
    TI = 0;



}