lcd.c

STR71X系列ARM微控制器原理与实践配套光盘

#include <stdio.h>
#include <stdarg.h>
#include "LCD.h"

static void Delay(void)
{
	int i;
	for(i = 0; i < 0x180; i++);
}

void LCD_Init(void)
{
	static const u8 LCD_InitCmd[4]= {0x38, 0x0C, 0x06, 0x01};
	int i;

	GPIO_Config(GPIO2, 0x000F, GPIO_AF_PP);

	EMI_Config(3, EMI_ENABLE | EMI_WAITSTATE(15) | EMI_SIZE_8);

	for(i = 0; i < 4; i++)
	{
		*(vu16*)&LCD_CMD_PORT = LCD_InitCmd[i] << 8 | LCD_InitCmd[i];
		Delay();
	}
	for(i = 0; i < 40; i++)
		Delay();
}

void LCD_Goto(int line, int col)
{
	unsigned cmd = 0x80 | line << 6 | col;
	*(vu16*)&LCD_CMD_PORT = cmd << 8 | cmd;
	Delay();
}

void LCD_Putc(char c)
{
	*(vu16*)&LCD_DAT_PORT = (u8)c << 8 | (u8)c;
	Delay();
}

void LCD_Puts(const char *s)
{
	while(*s)
	{
		*(vu16*)&LCD_DAT_PORT = *s << 8 | *s;
		s++;
		Delay();
	}
}

void LCD_Printf(const char *format, ...)
{
	static char buf[256];
	va_list args;
	va_start(args, format);
	vsprintf(buf, format, args);
	va_end(args);
	LCD_Puts(buf);
}