lcd_test.c

来自「NIOS II IDE 编程」· C语言 代码 · 共 16 行

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include "system.h"
#define ESC 27
#define ESC_TOP_LEFT "[1;0H" 
#define ESC_BOTTOM_LEFT "[2;0H" 
int main( void )
{
  FILE *lcd;
  lcd = fopen("/dev/lcd_16207", "w");
  fprintf(lcd, "%c%syou'll well done\nLook at me",ESC,ESC_TOP_LEFT); 
  printf("If you can see messages scrolling on the LCD Display, then it is functional!\n");
  usleep(2000000);
  fclose( lcd );
}