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標(biāo)題: 為什么我的dspic30f4011上LCD就是不能顯示? [打印本頁(yè)]

作者: 陳佳煒 時(shí)間: 2020-4-6 21:01
標(biāo)題: 為什么我的dspic30f4011上LCD就是不能顯示?
為什么我的dspic30f4011上LCD就是不能顯示，以下是程序。

#include<p30f4011.h>
_FOSC(CSW_FSCM_OFF&XT_PLL4);    //4倍頻晶振，F(xiàn)ailsafe時(shí)鐘關(guān)閉
_FWDT(WDT_OFF);                //關(guān)閉看門狗定時(shí)器
_FBORPOR(PBOR_OFF&MCLR_EN);    //掉電復(fù)位禁止，MCLR復(fù)位時(shí)能
_FGS(CODE_PROT_OFF);             //代碼保護(hù)禁止

#define RS LATFbits.LATF4
#define RW LATFbits.LATF5
#define E  LATBbits.LATB6

#define out LATD //4位輸入--RD0-4

#define uchar unsigned char

void LCD_initialize();//初始化函數(shù)
void check_busy();//查忙函數(shù)，但是這次沒有用到
void write_command(uchar com);//寫命令函數(shù)
void write_data(uchar dat);//寫數(shù)據(jù)函數(shù)
void string(uchar ad,uchar*p,uchar n);//使Lcd顯示字符的函數(shù)
void delay(uchar i);//延時(shí)函數(shù)

void delay(uchar i)//延時(shí)函數(shù)
{
  uchar t;
  while(i--)
  {
for(t=0;t<120;t++);
  }
}
void write_command(uchar com)//寫命令函數(shù)
{
      delay(1);
      E=0;
      RS=0;
      RW=0;
      out=com;
      delay(1);
      E=1;
      delay(1);
      E=0;
      out=com <<4;
      delay(1);
      E=1;
      delay(1);
      E=0;
}

void write_data(uchar dat)//寫數(shù)據(jù)函數(shù)
{
      delay(1);
      E=0;
      RS=1;
      RW=0;
      out=dat;
      delay(1);
      E=1;
      delay(1);
      E=0;
      out=dat <<4;
      delay(1);
      E=1;
      delay(1);
      E=0;
}
void LCD_initialize()//初始化函數(shù)
{
      //RW=0;
      write_command(0x32);
      write_command(0x28);
      write_command(0x0c);
      write_command(0x06);
      write_command(0x01);
      write_command(0x80);
}

void string(uchar ad,uchar *p,uchar n)//顯示字符函數(shù)
{
      uchar i;
      write_command(ad);
      for(i=0;i<n;i++)
      {
            write_data(*p++);
            delay(100);
      }
}

void main()
{

                  delay(1);
      LCD_initialize();//LCD初始化
      while(1)
      {
            string(0x85,"welcome",7);//寫入welcome
            string(0xc2,"Harbin China",12);//寫入Harbin China
            delay(100);
            write_command(0x01);//清屏
            delay(100);
      }
}

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