Part Number: MSP430F249
Tool/software: Code Composer Studio
hello; I have this uart code that works on pins 3.6,7 I want to change it to pins 3.4,5 ; how can I do that??
I tried to change the select buf to P3SEL = 0x030; but it didn't work !
here is the code:
#include <msp430.h>
int main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P1DIR = 0xFF; // All P1.x outputs
P1OUT = 0; // All P1.x reset
P2DIR = 0xFF; // All P2.x outputs
P2OUT = 0; // All P2.x reset
P3SEL = 0x0C0; // P3.6,7 = USCI_A1 TXD/RXD
P3DIR = 0xFF; // All P3.x outputs
P3OUT = 0; // All P3.x reset
P4DIR = 0xFF; // All P4.x outputs
P4OUT = 0; // All P4.x reset
P5DIR = 0xFF; // All P5.x outputs
P5OUT = 0; // All P5.x reset
P6DIR = 0xFF; // All P6.x outputs
P6OUT = 0; // All P6.x reset
UCA1CTL1 |= UCSSEL_1; // CLK = ACLK
UCA1BR0 = 0x03; // 32kHz/9600 = 3.41
UCA1BR1 = 0x00; //
UCA1MCTL = UCBRS1 + UCBRS0; // Modulation UCBRSx = 3
UCA1CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
UC1IE |= UCA1RXIE; // Enable USCI_A1 RX interrupt
__bis_SR_register(LPM3_bits + GIE); // Enter LPM3, interrupts enabled
}
// Echo back RXed character, confirm TX buffer is ready first
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCIAB1RX_VECTOR
__interrupt void USCI1RX_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(USCIAB1RX_VECTOR))) USCI1RX_ISR (void)
#else
#error Compiler not supported!
#endif
{
while (!(UC1IFG&UCA1TXIFG)); // USCI_A1 TX buffer ready?
UCA1TXBUF = UCA1RXBUF; // TX -> RXed character
}
thank you !
