msp430fe427, PC uart comminucation

If you click on the link that was automatically created where you named your processor, the msp430fe427, you'll find links to the device datasheet (telling you which kind of uart chip this MSP has) and further down the page (click on 'technical documents') a link to the family users guide, describing all modules a device of this family can possibly have, along with detailed description and register listing.
Also, all example code written for a particular module in this users guide will work on every processor of this family which has this module. Only some minor adjustments such as the external pin assignments (see device datasheet(s)) are necessary.

In some cases, using one module (e.g. USART) requires usage of another module (e.g. clock module) which might differ between the original example target and your processor. It's a rare case within the same family (except for certain features inside a module such as support of only one crystal instead of two for the smaller family members) but may be more common if you cross families where some of the modules (e.g. the USART) are identical but others not.

There are 270 different MSPs out there. You simply cannot write dedicated examples for every module in each of them. Be an engineer, get the basics and do it yourself.

Hi,

you can find some sample code (i.e. UART echo examples) by scrolling down the products page (http://focus.ti.com/docs/prod/folders/print/msp430fe427.html).
Here is the direct link to the examples: http://www.ti.com/litv/zip/slac017h

Kind regards
aBUGSworstnightmare

thanks.

i tried a lot of Uart code. But i understand my problem is clock. My crystal is not working correctly.

i used DCO clock to uart module. but i dont know default dco clock what is. or how can i configure it.

in msp430fe427 datasheet:

f(DCO=2) FN_8=FN_4=FN_3=FN_2=0 ; DCOPLUS = 1      3 V       0.3      0.7       1.3 MHz

according this information. i configured uart nodule:

calculate baut rate register's  values:

http://www.daycounter.com/Calculators/MSP430-Uart-Calculator.phtml

UXBR0 = 0x48

UXBR1 = 0X00

UXMCTL = 0XBF

Set DCOPLUS:

FLL_CTL0 |= DCOPLUS; 

Uart modue is working now. but not correctly.

when i typed "v" it returns "r". so baud configuration is wrong.

my code is:

void main(void)

{

  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT

  FLL_CTL0 |= DCOPLUS;                     // Configure load caps

  P2SEL |= 0x30;                            // P2.4,5 = USART0 TXD/RXD

  ME1 |= UTXE0 + URXE0;                     // Enable USART0 TXD/RXD

  UCTL0 |= CHAR;                            // 8-bit character

  UBR00 = 0x48;                             

  UBR10 = 0x00;                             

  UMCTL0 = 0xbf;                            // modulation

  UCTL0 &= ~SWRST;                          // Initialize USART state machine

  IE1 |= URXIE0;                            // Enable USART0 RX interrupt

  P2DIR |= 0x10;                            // P2.4 output direction

  _BIS_SR(LPM1_bits + GIE);                 // Enter LPM0 w/ interrupt

}

#pragma vector=USART0RX_VECTOR

__interrupt void usart0_rx (void)

{

  while (!(IFG1 & UTXIFG0));                // USART0 TX buffer ready?

  TXBUF0 = RXBUF0;                          // RXBUF0 to TXBUF0

}