lcdtest.c

来自「设计一个数字电源」· C语言 代码 · 共 47 行

/*********************************************
* vim: set sw=8 ts=8 si :
* Author: Guido Socher, Copyright: GPL 
* This is a lcd test program only
* 
* See http://www.tuxgraphics.org/electronics/
* 
* Chip type           : ATMEGA8
* Clock frequency     : Internal clock 4 Mhz 
*********************************************/
#include <avr/io.h>
#include <inttypes.h>
#include <avr/interrupt.h>
#include "lcd.h"

void delay_ms(unsigned char ms)
/* delay for a minimum of <ms> */
/* with a 4Mhz clock */
{
	uint8_t inner,inner1;

    	while (ms) {
		inner = 200;
		while (inner) {
			inner--;
			inner1 = 70;
			while (inner1) {
				inner1--;
			}
		}
		ms--;
	}
}

void main(void)
{
	lcd_init(LCD_DISP_ON);
	sei();
	while (1) {
		lcd_clrscr();
		lcd_puts("OK works");

		delay_ms(250);
	}
}