2個(gè)io口驅(qū)動(dòng)1602 電路圖和程序

ID:97007 · 發(fā)表于 2016-5-14 12:06

這是基于avr的，希望有大神能移植成51的。

// Drive a LCD1602 with 2 wire
//===================================================
//ICC-AVR application builder : 2010-10-3 19:30:02
// Target : M16
// Crystal: 4.0000Mhz
#include <iom16v.h>
#include <macros.h>
#define Set_E PORTB|=2
#define Clr_E PORTB&=~2
#define Set_D PORTB|=1
#define Clr_D PORTB&=~1
#define Set_xy(y,x) Send(0,(y<<6)|(x&15)|0x80)
//===================================================
void init_devices(void)
{ CLI(); //disable all interrupts
DDRB = 0x03;
MCUCR = 0x00;
GICR = 0x00;
SEI(); //re-enable interrupts
}
//===================================================
void Delay(unsigned int i)
{
while(i--);
}
//===================================================
void Send(unsigned char RS, unsigned char dat)
{
unsigned char i;
for (i = 2; i > 0; i--)
{
if (dat & 0x80) Set_D; else Clr_D;
Delay(10608);//14520us
if (RS) Set_E;
if (dat & 0x40) Set_D; else Clr_D;
Delay(462); //660us
if (dat & 0x20) Set_D; else Clr_D;
Delay(18); //30us
Set_E;
if (dat & 0x10) Set_D; else Clr_D;
_NOP(); //0.5us < t < 1.36us
Clr_E;
dat <<= 4;
}
}
//===================================================
void init_1602(void)
{
unsigned char i = 3;
Clr_D;
Clr_E;
Delay(10608);
do{
Clr_D;
Delay(462);
Set_D;
Set_E;
Delay(18);
if (i == 0) Clr_D;
_NOP();_NOP();_NOP();
Clr_E;
}while(i--);
Send(0,0x28);
Send(0,0x01);
Send(0,0x0f);
}
//===================================================
void Send_S(unsigned char *p)
{
while(*p) Send(1,*p++);
}
//===================================================
void main(void)
{
unsigned char i;
init_devices();
init_1602();
Set_xy(0,2);
Send_S("Hello world!");
Set_xy(1,3);
Send_S("I'm COWBOY.");
for (i=0;i<255;i++) Delay(10000);
Send(0,0x01);
Set_xy(0,3);
Send_S("Welcome to");
Set_xy(1,1);
Send_S("www*ourdev*cn");
while(1);
}

復(fù)制代碼

仿真文件和全部代碼下載：

1602-2.zip (7.64 KB, 下載次數(shù): 24)

ID:103696 · 發(fā)表于 2018-3-11 01:01

貨不對(duì)版，代碼明明是AVR的，仿真畫(huà)面卻是AT89C51

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2個(gè)io口驅(qū)動(dòng)1602 電路圖和程序

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