Schema elettrico |
main.c
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#include <pic.h>
#include "LCD1602.h"
//---------------------------------------
unsigned char str0[]={"Luca "};
unsigned char str1[]={"Innocenti "};
unsigned char str2[]={"debiaonoldcomput"};
unsigned char str3[]={"ers.blogspot.com"};
//---------------------------------------
void main(void)
{
LCD1602_GPIO_Init();
LCD1602_init();
while(1)
{
DisplayListChar(0,0,str0);
DisplayListChar(0,1,str1);
Delay1602_MS(500);
DisplayListChar(0,0,str2);
DisplayListChar(0,1,str3);
Delay1602_MS(500);
}
}
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LCD1602.H
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#ifndef __LCD1602_H
#define __LCD1602_H
#define E RA3
#define RW RA2
#define RS RA5
#define busy RD7
#define busy_init TRISD7
#define Lcd_Date PORTD
void Delay1602_US(unsigned int t);
void Delay1602_MS(unsigned int t);
void LCD1602_BusyTest(void);
void LCD1602_Write_Instruction(unsigned char combuf);
void LCD1602_Write_data_busy(unsigned char databuf);
void LCD1602_init(void);
void DisplayOneChar(unsigned char X,unsigned char Y,unsigned char DData);
void DisplayListChar(unsigned char X,unsigned char Y,unsigned char *DData);
void LCD1602_GPIO_Init(void);
#endif
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1602.c
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#include <pic.h>
#include "LCD1602.h"
__CONFIG(HS&WDTDIS&LVPDIS);
void Delay1602_US(unsigned int t)
{
unsigned int k;
for(k=0;k<t;k++);
}
void Delay1602_MS(unsigned int t)
{
while(t--)
Delay1602_US(200);
}
void LCD1602_BusyTest(void)
{
busy_init=1;
RS=0;
RW=1;
E=1;
asm("NOP");
asm("NOP");
while(busy==1);
E=0;
busy_init=0;
}
void LCD1602_Write_Instruction(unsigned char combuf)
{
LCD1602_BusyTest();
RS=0;
RW=0;
E=0;
asm("NOP");
Lcd_Date=combuf;
asm("NOP");
asm("NOP");
E=1;
asm("NOP");
E=0;
}
void LCD1602_Write_data_busy(unsigned char databuf)
{
LCD1602_BusyTest();
RS=1;
RW=0;
E=0;
asm("NOP");
Lcd_Date=databuf;
asm("NOP");
asm("NOP");
E=1;
asm("NOP");
E=0;
}
void LCD1602_init(void)
{
Delay1602_US(1500);
LCD1602_Write_Instruction(0x38);
Delay1602_US(500);
LCD1602_Write_Instruction(0x38);
Delay1602_US(500);
LCD1602_Write_Instruction(0x38);
LCD1602_Write_Instruction(0x38);
LCD1602_Write_Instruction(0x08);
LCD1602_Write_Instruction(0x01);
LCD1602_Write_Instruction(0x06);
LCD1602_Write_Instruction(0x0C);
}
void DisplayOneChar(unsigned char X,unsigned char Y,unsigned char DData)
{
Y&=1;
X&=15;
if(Y)X|=0x40;
X|=0x80;
LCD1602_Write_Instruction(X);
LCD1602_Write_data_busy(DData);
}
void DisplayListChar(unsigned char X,unsigned char Y,unsigned char *DData)
{
unsigned char ListLength=0;
Y&=0x01;
X&=0x0f;
while(X<16)
{
DisplayOneChar(X,Y,DData[ListLength]);
ListLength++;
X++;
}
}
void LCD1602_GPIO_Init(void)
{
ADCON1=0X07;
TRISA=0B11010011;
TRISD=0B00000000;
PORTA=0B00000000;
PORTD=0B00000000;
}
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