lcdtest.c

LCD测试程序,在UCLINUX下开发LCD驱动时用128*64的LCM点阵液晶调试时所开发的测试程序,实现测试的基本功能

#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <linux/delay.h>

/* 
 * Function command codes for io_ctl.
 */
#define LCD_On                  1
#define LCD_Off                 2
#define LCD_Clear               3
#define LCD_Reset               4
#define LCD_Cursor_Left         5
#define LCD_Cursor_Right        6
#define LCD_Disp_Left           7
#define LCD_Disp_Right          8
#define LCD_Get_Cursor          9
#define LCD_Set_Cursor          10
#define LCD_Home                11
#define LCD_Read                12
#define LCD_Write               13
#define LCD_Cursor_Off          14
#define LCD_Cursor_On           15
#define LCD_Get_Cursor_Pos      16
#define LCD_Set_Cursor_Pos      17
#define LCD_Blink_Off           18
#define FUNCTION_SET            19

#define MAX_LEN_MESSAGE         64



#define LCDDATA       0x002012A0
#define LCDDATADIR    0x002012A4
#define LCDCTL        0x002012B0

#define LCDDATAIN 0
#define LCDDATAOUT 0xff
#define DELAY 80000

unsigned char lcd_c=0x18;

#define LCD_E(d)   if (d>0)lcd_c|=0x04;else lcd_c&=~0x04;(*(volatile unsigned *)(LCDCTL))=lcd_c;
#define LCD_RW(d)  if (d>0)lcd_c|=0x01;else lcd_c&=~0x01;(*(volatile unsigned *)(LCDCTL))=lcd_c;
#define LCD_RS(d)  if (d>0)lcd_c|=0x02;else lcd_c&=~0x02;(*(volatile unsigned *)(LCDCTL))=lcd_c;
#define LCD_RST(d) if (d>0)lcd_c|=0x08;else lcd_c&=~0x08;(*(volatile unsigned *)(LCDCTL))=lcd_c;
#define LCD_PSW(d) if (d>0)lcd_c|=0x10;else lcd_c&=~0x10;(*(volatile unsigned *)(LCDCTL))=lcd_c;
void Delay(unsigned int j)
{
  int k,i;
  for (k=0;k<j;k++)
   for(i=1000;i>0;i--) ;
}
void Lcd_Write_Cmd(char instru)
{
 int i;
 //for (i=DELAY;i>0;i--);
 /*clr RS low */
 LCD_RS(0);
 /*clr R/w for write*/
 LCD_RW(0);
 /*Set enable*/
 LCD_E(1);
 (*(volatile unsigned *)(LCDDATADIR))=0xffffffff;
 (*(volatile unsigned *)(LCDDATA))=instru;
 Delay(100) ;
 LCD_E(0);
 Delay(150) ;
 }

 void Lcd_Write_Data(char lcddata)
{
 int i;
 //for (i=DELAY;i>0;i--);
 /*clr RS low */
 LCD_RS(1);
 /*clr R/w for write*/
 LCD_RW(0);
 /*Set enable*/
 LCD_E(1);
 (*(volatile unsigned *)(LCDDATADIR))=0xffffffff;
 (*(volatile unsigned *)(LCDDATA))=lcddata;
  Delay(100) ;
  LCD_E(0);
  Delay(150) ;
}


void Lcd_init()
{
 //Delay(100);
 LCD_RST(0);
 Delay(100);
 LCD_RST(1);
 Lcd_Write_Cmd(0x30);
 Delay(100);
 Lcd_Write_Cmd(0x30);
 Delay(50);
 Lcd_Write_Cmd(0x0c);
 Delay(100);
 Lcd_Write_Cmd(0x01);
 Delay(10000);
 Lcd_Write_Cmd(0x06);
 Delay(10);
}
void hzkdis(unsigned char *s)
{
  while(*s>0)
   {
   	Lcd_Write_Data(*s);
   	s++;
   	Delay(1);
   }
}

void test()
{
	Lcd_Write_Cmd(0x01);
	Delay(10);usleep(100);
	Lcd_Write_Cmd(0x82);
	hzkdis("8A205");
	Lcd_Write_Cmd(0x88);
	hzkdis("123456789我");
}

int mai000n(void)
{
 int i,j,k,o,d,da;
 da = 0;
 printf("LCD测试程序!\n");

 Lcd_init();
  printf("LCD8\n");
 test();
 printf("LCD test end.\n");
return 0;
}
#define LCD_X			19
#define LCD_Y			20
#define LCD_D			21
int main(void)
{
   int fd,fd1,count,i,tmp;
   unsigned long rgcon;
   char title1[]="hello 8a205 1";
   char title2[]="hello 8a205 2";
   char title3[]="hello 8a205 3";
   int *spinfo=(int *)malloc(4);
   int x,y;
   unsigned char key_buf[100];
   printf("entered main\n");
   if((fd=open("/dev/lcddrv",O_RDWR))==-1)
     {
       perror("open eror");
       exit(1);
     }
    printf("open ok\n");
    sleep(1);
    for (y=0;y<4;y++)
     for (x=0;x<4;x++)
      {
        ioctl(fd,LCD_X,&x);
        ioctl(fd,LCD_Y,&y);
        i='a';
        ioctl(fd,LCD_D,&i);
        sleep(1);
        //printf("%d\n",x);
      }  
    if((fd1=open("/dev/button",O_RDWR))==-1)
     {
       perror("open button  eror");
       exit(1);
     }    
     ioctl(fd,LCD_Clear); 
    while(1)
     {    x = 0;
          y = 0;
     	  count = read(fd1,key_buf,1);
     	  if (count>0)
     	   {
     	   	for (i=0;i<count;i++)
     	   	 {
     	   	   if (key_buf[i]>10) 
     	   	    {
     	   	    	tmp = key_buf[i] / 10;
     	   	    	if (key_buf[i]==10) tmp =1;
      	   	      ioctl(fd,LCD_X,&x);
        	      ioctl(fd,LCD_Y,&y);
        	      tmp +='0';
                      ioctl(fd,LCD_D,&tmp);  
                      tmp -='0';
     	   	    	tmp = key_buf[i] - tmp *10;
     	   	    	x++;
      	   	      ioctl(fd,LCD_X,&x);
        	      ioctl(fd,LCD_Y,&y);
        	      tmp +='0';
                      ioctl(fd,LCD_D,&tmp);                        	   	    	
     	   	    }else
     	   	   {
     	   	      ioctl(fd,LCD_X,&x);
        	      ioctl(fd,LCD_Y,&y);
        	      tmp = key_buf[i] + '0';
                      ioctl(fd,LCD_D,&tmp);
     	   	   }
     	   	
     	   	  sleep(1);
     	   	      x =0;y=0;
      	   	      ioctl(fd,LCD_X,&x);
        	      ioctl(fd,LCD_Y,&y);
        	      tmp =' ';
                      ioctl(fd,LCD_D,&tmp);  
     	   	    	x++;
      	   	      ioctl(fd,LCD_X,&x);
        	      ioctl(fd,LCD_Y,&y);
                      ioctl(fd,LCD_D,&tmp);       	   	  	
     	   	 }
     	   	 
     	   }
     	
     	}  
   // sleep(2);
   printf("spinfo=%d\n",*spinfo);
  close(fd);
  return 0;
}