fet440_lcd_01.c

MSP430C_p440例程如要更多资料请联系我.

//*****************************************************************************
//  MSP-FET430P440 Demo - LCD, Display "6543210" on STK/EVK LCD
//
//  Description: Displays "6543210" on MSP-EVK430S320 LCD.
//  ACLK = LFXT1 = 32768Hz, MCLK = SMCLK = default DCO = 32 x ACLK = 1048576Hz
//  //* An external watch crystal between XIN & XOUT is required for ACLK *//	
//
//                MSP430F449
//            -----------------
//        /|\|              XIN|-
//         | |                 | 32kHz
//         --|RST          XOUT|-
//           |                 |
//         +-|R33          P5.1|     -----------------
//        1m |              -  |--> | + 7 6 5 4 3 2 1 |
//         +-|R23          P3.2|     -----------------
//        1m |             COM0|-----||||
//         +-|R13          COM1|------|||
//        1m |             COM2|-------||
//         +-|R03          COM3|--------|
//         | |                 |
//        Vss
//
//  M. Buccini
//  Texas Instruments Inc.
//  Feb 2005
//  Built with IAR Embedded Workbench Version: 3.21A
//*****************************************************************************
#include  <msp430x44x.h>

char digit[10] =
{
  0xB7,  /* "0" LCD segments a+b+c+d+e+f */
  0x12,  /* "1" */
  0x8F,  /* "2" */
  0x1F,  /* "3" */
  0x3A,  /* "4" */
  0x3D,  /* "5" */
  0xBD,  /* "6" */
  0x13,  /* "7" */
  0xBF,  /* "8" */
  0x3F   /* "9" */
};

void main(void)
{
  volatile unsigned int i;                  // Use volatile to prevent removal
                                            // by compiler optimization

  WDTCTL = WDTPW + WDTHOLD;                 // Stop WDT
  FLL_CTL0 |= XCAP14PF;                     // Configure load caps
  for (i = 0; i < 10000; i++);              // Delay for 32 kHz crystal to
                                            // stabilize

  LCDCTL = LCDON + LCD4MUX + LCDSG0_4;      // LCD on, 4-Mux, segments S0-S27
  BTCTL = BT_fLCD_DIV128;                   // LCD clock freq is ACLK/128
  P5SEL = 0xFC;                             // Select P5.2-7 as Com and Rxx

  for (;;)
  {
    unsigned char x;

    for (x=0; x<7; x++)
    {
      LCDMEM[x] = digit[x];                 // Display "6543210"
    }
  }
}