jhd_1602a.c

jhd1602的显示程序

#include "main.h"

/*显示屏初始化函数*/
void JHD_1602A_init(void)
{
 //I/O口方向设置
 DATA_BUS_JHD_1602A_DDR;
 SET_RS_JHD_1602A_DDR;
 SET_RW_JHD_1602A_DDR;
 SET_EN_JHD_1602A_DDR; 
 
 /*显示模式设置*/
 write_JHD_1602A_command(0x38);				
 	delay_ms(5);
 write_JHD_1602A_command(0x38);
	delay_ms(5);
 write_JHD_1602A_command(0x38);
	delay_ms(5);
 write_JHD_1602A_command(0x38);
	
 write_JHD_1602A_command(0x08);				/*显示关闭*/
 write_JHD_1602A_command(0x01);				/*显示清屏*/
 write_JHD_1602A_command(0x06);				/*显示光标移动设置*/
	delay_ms(5);
 write_JHD_1602A_command(0x0C);				/*显示开及光标设置*/
}

/*显示屏指令写入函数*/
void write_JHD_1602A_command(unsigned char command) 
{
	CLR_RS_JHD_1602A;
	CLR_RW_JHD_1602A; 
	SET_EN_JHD_1602A;
	DATA_BUS_JHD_1602A = command;
	delay_us(10);
	CLR_EN_JHD_1602A;
}

/*显示屏数据写入函数*/
void write_JHD_1602A_data(unsigned char data) 
{
	SET_RS_JHD_1602A;
   	CLR_RW_JHD_1602A; 
    	SET_EN_JHD_1602A;
	DATA_BUS_JHD_1602A = data;
	delay_us(10);
    	CLR_EN_JHD_1602A;
}

/*显示屏清空显示*/
void clear_JHD_1602A(void)
{
	write_JHD_1602A_command(0x01);
	delay_ms(5);
}

/*显示屏字符串写入函数*/
void write_JHD_1602A_str(unsigned char x,unsigned char y,unsigned char *s) 
{
	
    if (y == 0) { write_JHD_1602A_command(0x80 + x);}
    else        { write_JHD_1602A_command(0xC0 + x);}
    delay_us(10);
    while (*s)  { write_JHD_1602A_data( *s);   s ++;}
}

/*显示屏单字符写入函数*/
void write_JHD_1602A_char(unsigned char x,unsigned char y,unsigned char data) 
{
	
    if (y == 0) { write_JHD_1602A_command(0x80 + x);}
    else        { write_JHD_1602A_command(0xC0 + x);}
    delay_us(10);
    write_JHD_1602A_data(data);  
}