test44x_uart01_02400.c

AQ430 C Code,支持LSD-TEST430F44X

#include <msp430x44x.h>
static unsigned char RXTXBUFF[8];             //recever (send)data buffer
const unsigned char digit[16] = {
0x7B,  /* "0" */
0x12,  /* "1" */
0x4F,  /* "2" */
0x1F,  /* "3" */                              //0-F display table
0x36,  /* "4" */
0x3D,  /* "5" */
0x7D,  /* "6" */
0x13,  /* "7" */
0x7F,  /* "8" */
0x3F,  /* "9" */
0x77,  /* "A" */
0x7C,  /* "B" */
0x69,  /* "c" */
0x5E,  /* "D" */
0x6D,  /* "E" */
0x65,  /* "F" */
};

//-------------------------------------------------------
//------------mian ------------------------------------
//-------------------------------------------------------
void main(void)
{
  int i;    
  WDTCTL = WDTPW + WDTHOLD;              // Stop WDT
  FLL_CTL0 |= XCAP14PF;                  // Configure load caps
  UTCTL0 = SSEL0;                        // UCLK = ACLK
  UBR00 = 0x0D;                          // 32k/2400 - 13.65
  UBR10 = 0x00;                        
  UMCTL0 = 0x6B;                         // Modulation
  UCTL0 = CHAR+PENA+PEV;                 // 8-bit character *SWRST*
  ME1 |= UTXE0 + URXE0;                  // Enable USART0 TXD/RXD
  IE1 |= URXIE0;                         // Enable USART0 RX interrupt
  P2SEL |= 0x30;                         // P2.4,5 = USART0 TXD/RXD
  P2DIR |= 0x10;                         // P2.4 output direction
  LCDCTL = LCDON + LCD4MUX + LCDP2;      // STK LCD 4Mux, S0-S17
  BTCTL = BTFRFQ1;                       // STK LCD freq 
  P5SEL = 0xFC;                          // Common and Rxx all selected       
  for (i=0; i<7; ++i)                    // Display "6543210" 
  LCDMEM[i] = digit[i];                  // Test display is ok?
  LCDMEM[7]=0x0D;
  i=0;
  _EINT();                               // Enable interrupts
  
// Mainloop
  for (;;)                             
  {
   _BIS_SR(LPM3_bits);                   // Wait in LPM3 until character RXed
   _NOP();
     for (i=0;i<=7;i++)
    {
     while ((IFG1 & UTXIFG0) == 0);      // USART0 TX buffer ready?
     TXBUF0 = RXTXBUFF[i];                      // RXBUF0 to TXBUF0
     }
  }
}

// UART0 RX ISR will for exit from LPM3 in Mainloop
interrupt[UART0RX_VECTOR] void usart0_rx (void)
{                                        //i=rxtxbuff num,j=lcd display bit num,k=recever data num 
    static int i,j,k;     
    RXTXBUFF[i]=RXBUF0;                  // RXBUF0 TO BUFF
    LCDMEM[j]=digit[RXTXBUFF[i]&0x0F];   // display the date of recever      
    LCDMEM[j+1]=digit[RXTXBUFF[i]>>4];
    LCDMEM[6]=digit[k];
    LCDMEM[7]=0x00;
    j=j>=4?0:j+2;                                
    k=k<0xF?k+1:0;                       
    i++;
   if (i>=8)                             // recever data =8 ?                
    {i=0;                                // =8 ,send the data to cmputer
     _BIC_SR_IRQ(LPM3_bits);             

     }    // Clear LPM3 bits from 0(SR)
}