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[mw_shl_code=c,true]/*******lcd1602.c**********/
#include "lcd1602.h"
#include "delay.h"
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD,ENABLE);//????PB,PD?????±??
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //???ì????
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO????????50MHz
GPIO_Init(GPIOD, &GPIO_InitStructure); //??????GPIOD0~7
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15|GPIO_Pin_14|GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //???ì????
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO????????50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); //??????GPIB15,14,13
}
/* ???????§×?±??? */
void LCD1602_Wait_Ready(void)
{
u8 sta;
DATAOUT(0xff);
LCD_RS_Clr();
LCD_RW_Set();
do
{
LCD_EN_Set();
delay_ms(5); //???±5ms??·???????
sta = GPIO_ReadInputDataBit(GPIOD, GPIO_Pin_7);//????×???×?
LCD_EN_Clr();
}while(sta & 0x80);//bit7????1±í?????§???????????ì???±????????0????
}
/* ?òLCD1602???§??????×????ü????cmd-???????ü???? */
void LCD1602_Write_Cmd(u8 cmd)
{
LCD1602_Wait_Ready();
LCD_RS_Clr();
LCD_RW_Clr();
DATAOUT(cmd);
LCD_EN_Set();
LCD_EN_Clr();
}
/* ?òLCD1602???§??????×?????????dat-???????????? */
void LCD1602_Write_Dat(u8 dat)
{
LCD1602_Wait_Ready();
LCD_RS_Set();
LCD_RW_Clr();
DATAOUT(dat);
LCD_EN_Set();
LCD_EN_Clr();
}
/* ???? */
void LCD1602_ClearScreen(void)
{
LCD1602_Write_Cmd(0x01);
}
/* ?è??????RAM???????·???à????±ê??????(x,y)-????????????×?·?×?±ê */
void LCD1602_Set_Cursor(u8 x, u8 y)
{
u8 addr;
if (y == 0)
addr = 0x00 + x;
else
addr = 0x40 + x;
LCD1602_Write_Cmd(addr | 0x80);
}
/* ?????§??????×?·??®??(x,y)-????????????????×?±ê??str-×?·??®???? */
void LCD1602_Show_Str(u8 x, u8 y, u8 *str)
{
LCD1602_Set_Cursor(x, y);
while(*str != '\0')
{
LCD1602_Write_Dat(*str++);
}
}
/* ??????1602???§ */
void LCD1602_Init(void)
{
LCD1602_Write_Cmd(0x38); //16*2??????5*7???ó??8????????
LCD1602_Write_Cmd(0x0c); //??????????±ê??±?
LCD1602_Write_Cmd(0x06); //??×??????????·×???+1
LCD1602_Write_Cmd(0x01); //????
}
[/mw_shl_code]
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发表于 2015-2-6 09:35:42
楼主
发表于 2015-2-6 22:49:20
