基于msp430的点阵显示设计

单片机

` 本帖最后由 liu1032042013 于 2015-1-2 16:56 编辑

单片机用的是ti的Launchpad msp430,点阵是8*8点阵，驱动芯片是两个74HC595；视频连接：http://pan.baidu.com/s/1c0gu620             原理图见附件

#include
const unsigned char  tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
const unsigned char  digittab[10][8]={ //字模取模方式阴码逆向逐列式
{0x7C,0x55,0x5F,0x45,0x5F,0x55,0x7C,0x00},/*"西",0*/

{0x16,0x12,0xB2,0x5B,0xB6,0x12,0x12,0x16},/*"安",1*/

{0x7C,0x54,0x7F,0x54,0x7C,0xFE,0x2A,0x3E},/*"邮",2*/

{0x00,0x3E,0x2A,0xFF,0xAA,0xBE,0xC0,0x00},/*"电",3*/

{0x44,0x24,0x14,0x0F,0x14,0x24,0x44,0x00},/*"大",4*/

{0x06,0x23,0xAA,0xAB,0xFA,0x23,0x22,0x06},/*"学",5*/

{0x00,0x00,0x3E,0x49,0x49,0x32,0x00,0x00},/*"6",6*/

{0x00,0x00,0x03,0x71,0x09,0x07,0x00,0x00},/*"7",7*/

{0x00,0x00,0x36,0x49,0x49,0x36,0x00,0x00},/*"8",8*/

{0x00,0x00,0x26,0x49,0x49,0x3E,0x00,0x00},/*"9",9*/
};
unsigned int timecount;
unsigned char cnta;
unsigned char cntb;
#define SD_H    P1OUT|=BIT4;       //串行数据输入
#define SD_L    P1OUT&=~BIT4;
#define ST_H P1OUT|=BIT5;       //存储寄存器时钟输入
#define ST_L P1OUT&=~BIT5;
#define SH_H P1OUT|=BIT6; //移位寄存器时钟输入
#define SH_L P1OUT&=~BIT6;

void Ser_IN(unsigned char Data)
{
      unsigned char i;
      for(i=0; i < 8; i++)
      {
            SH_L;                      //CLOCK_MAX=100MHz
            if(Data&0x80)
            {
                  SD_H;
            }
            else
            {
                  SD_L;
            }
            Data <<= 1;
            SH_H;
      }
}
void Par_OUT(void)
{
      ST_L;
      ST_H;
}
void sysclock()
{
TACTL=TASSEL0+TACLR;
CCTL0=CCIE;
CCR0=2000;
TACTL|=MC0;
_EINT();
//LPM0;
}
void main()
{
WDTCTL=WDTPW+WDTHOLD;
P1SEL&=~(BIT4+BIT5+BIT6);
P1DIR|=BIT4+BIT5+BIT6;
sysclock();
while(1)
{
      Ser_IN(tab[cnta]);//8X8点阵列扫描
      Ser_IN(digittab[cntb][cnta]);//8X8点阵行送扫描数据
      Par_OUT();//74HC595输出显示
      cnta++;
      if(cnta==8)
   {
      cnta=0;
   }
}

}
#pragma vector=TIMER0_A0_VECTOR
__interrupt void timeA0(void)
{
   // Ser_IN(tab[cnta]);//8X8点阵列扫描
      //Ser_IN(digittab[cntb][cnta]);//8X8点阵行送扫描数据
      //Par_OUT();//74HC595输出显示
      //cnta++;

timecount++;
  if(timecount==1)
{
   timecount=0;
   cntb++;
if(cntb==6)
      {
      cntb=0;
      }
}
}

`