#include /* * main.c */ const char string[5]={"Hello"}; int i; void main(void) { i=0; WDTCTL = WDTPW+WDTHOLD; // Stop watchdog timer UCA0CTL1 = UCSWRST; // Reset UCA0 to be configured P2SEL1 = 0x00; P2SEL0 = BIT0+BIT1; // Select Module 2 on Pins 2.0 and 2.1 //P2DIR = BIT; //P2OUT = 0x00; PM5CTL0 = 0x00; //Disables Ports LPM CSCTL0 = CSKEY; // Password key to change clock CSCTL1 = 0x00; // Set SMCLK 1MHZ CSCTL2=SELS_3; // Select DCO as SMCLK /* Configure */ UCA0CTL1 |= UCSSEL_2; //SMCLK UCA0BR0 = 6; // 1MHZ 9600 UCA0BR1 = 0; // 1MHZ 9600 UCA0MCTLW = UCOS16+UCBRF3+UCBRS5; //Select Modulation = 1; UCA0CTL1 &= ~UCSWRST; // Remove Reset UCA0IE |= UCTXIE; //Enable Interrupts for Transmitter while(1){ __bis_SR_register(LPM0_bits+GIE); } } #pragma vector=USCI_A0_VECTOR __interrupt void USCI0TX_ISR(void) { UCA0TXBUF=string[i++]; //Move character to Buffer as i increases if (i == 5){ //if i =5 then repeat message i=0; } } So I checked my putty settings and flow control was set to none, and I also took in consideration setting up the DCO according to the User guide. I still dont get any character son the terminal, I also tried setting the direction of P2.0 which is the TX as out and still nothing. from my understanding, every time the TXBUF is ready to transmit another character it will set up a TXIFG so it will generate an interrupt, thats what Ive seen from its behavior, Ive also looked an example code and I have most of the settings up Idk what could be it.
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