uart_run1.c

MSP430开发过程中

//******************************************************************************
//   MSP430x26x Demo - USCI_A0, 115200 UART Echo ISR, DCO SMCLK
//
//   Description: Echo a received character, RX ISR used. Normal mode is LPM0.
//   USCI_A0 RX interrupt triggers TX Echo.
//   Baud rate divider with 1MHz = 1MHz/115200 = ~8.7
//   ACLK = n/a, MCLK = SMCLK = CALxxx_1MHZ = 1MHz
//
//             MSP430F261x/241x
//             -----------------
//         /|\|              XIN|-
//          | |                 |
//          --|RST          XOUT|-
//            |                 |
//            |     P3.4/UCA0TXD|------------>
//            |                 | 115200 - 8N1
//            |     P3.5/UCA0RXD|<------------
//
//   B. Nisarga
//  edit by luoqinghua from  Texas Instruments Inc.
// octobor 12  2007
//   Built with CCE Version: 3.2.0 and IAR Embedded Workbench Version: 3.42A
//******************************************************************************
//file name : uart_run1.c

#include  "msp430x26x.h"
#include  "uart.h"
//#include  "uart1.c"
/***********************************************************************************
* @fn      printInt
*
* @brief   Print a 32-bit integer as decimal.
*
* @param   v - the value to be displayed
*
* @return  none
*/



void main(void)
{
  int i;
  uint8 data[50];
  //char a＝"a";
  int length=50;
  uint32 mydata=100;
  char *sz="i am in HEU.\n";
  char chipID[]=" Hey ,i am using the format print";
  uint16 chipid=0xffab;
  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  if (CALBC1_1MHZ ==0xFF || CALDCO_1MHZ == 0xFF)                                     
  {  
    while(1);                               // If calibration constants erased
                                            // do not load, trap CPU!!
  }    
  BCSCTL1 = CALBC1_1MHZ;                    // Set DCO
  DCOCTL = CALDCO_1MHZ; 
  P3SEL = 0x30;                             // P3.4,5 = USCI_A0 TXD/RXD
  UCA0CTL1 |= UCSSEL_2;                     // SMCLK
  UCA0BR0 = 8;                              // 1MHz 115200
  UCA0BR1 = 0;                              // 1MHz 115200
  UCA0MCTL = UCBRS2 + UCBRS0;               // Modulation UCBRSx = 5
  UCA0CTL1 &= ~UCSWRST;                     // **Initialize USCI state machine**
  IE2 |= UCA0RXIE;                          // Enable USCI_A0 RX interrupt
  //printf("hell0");
  for(i = 0; i < length; i++)
    {
       
         data[i]=i;
         printHex(i,8);
        
    }
  printChar('\n');
  halUartWrite(data,50); //写数据
  printChar('\n');
  printStr( sz);
  printChar('a'); //写字符
  printStrW(sz, 10);
  printChar('\n');//换行
  printHex(mydata, 8);
  printChar('\n');
  printKvpHex(chipID, chipid);//   printKvpHex("Chip ID: ", chipId);
  printInt(mydata);
  printChar('\n');//换行
  printKvpInt("mydata is", mydata);
 // __bis_SR_register(LPM0_bits + GIE);       // Enter LPM0, interrupts enabled
}

// Echo back RXed character, confirm TX buffer is ready first
//#pragma vector=USCIAB0RX_VECTOR
//__interrupt void USCI0RX_ISR(void)
//{
//  while (!(IFG2&UCA0TXIFG));                // USCI_A0 TX buffer ready?
//  UCA0TXBUF = UCA0RXBUF;                    // TX -> RXed character
//}