test44x_lcd03.c

ＭＳＰ４３０f４４９实时时钟及ＬＣＤ／ＬＥＤ显示

#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)
{
  unsigned int value = 43044;     // number to display, range = 0 to 65535
       // NOTE: DO NOT use leading zeros or it will be interpreted as octal data
  
  char *LCD = LCDMEM;
  unsigned int i;

  WDTCTL = WDTPW + WDTHOLD;   // Stop watchdog timer 
  FLL_CTL0 = XCAP18PF;        //set load capacitance for 32k xtal

  // Initialize LCD driver (4Mux mode) 
  LCDCTL = 0x03D;             // 4mux LCD, segs16-23 = outputs
  BTCTL  = BTFRFQ1;           // set LCD frame freq = ACLK
  P5SEL  = 0xFC;              // set Rxx and COM pins for LCD
  
  // clear LCD memory to clear display
  for (i=0; i<19; i++)
  {
    LCD[i] = 0;
  } 
  
  // display contents of the variable value 
  for (i=0; i<5; i++)
  {
    LCD[i] = digit[value%10]; // remainder = character in table to display
    value = value/10;         // shifts right so next character can be displayed
  } 
 
  LPM3;                       // enter low power mode 3 
}