Tweet
có anh nào đã làm được giao tiếp atmega16 với LCD nokia 5510 chưa vậy.cho em xin code với.em đang làm nó mà nó không chạy.
code của em.
#include <mega16.h>
#include <delay.h>
//#define DC PORTC.1;
//#define RESET PORTC.2;
//#define CS PORTC.3;
// SPI functions
#include <spi.h>
// Declare your global variables here
void spi_gui(unsigned char data)
{
PORTC.3=1;
delay_us(10);
PORTC.3=0;
SPDR=data;
while((SPSR & 0x80)==0);
PORTC.3=1;
}
void LCDWrite(char data_or_command, unsigned char data1)
{
if(data_or_command==0) PORTC.1=0;
else PORTC.1=1;
PORTC.3=0;
spi_gui(data1); // Send the data
PORTC.3=1;
}
void gotoXY(int x, int y)
{
LCDWrite(0, 0x80 | x); // Column.
LCDWrite(0, 0x40 | y); // Row.
}
void LCDClear() //Clears the LCD by writing zeros to the entire screen
{
unsigned int i;
for (i = 0 ; i < 504 ; i++) LCDWrite(1, 0x00);
gotoXY(0, 0); //After we clear the display, return to the home position
}
void LCDInit(unsigned char contrast,unsigned char coefficent,unsigned char bias) //This sends the magical commands to the PCD8544
{
PORTC.2=1; PORTC.3=1; PORTC.1=1; //Configure control pins
PORTC.2=0; //Reset the LCD to a known state
PORTC.2=1;
LCDWrite(0, 0x21); //Tell LCD that extended commands follow
LCDWrite(0, 0x80 + contrast); //Set contrast (max 127);
LCDWrite(0, 0x04 + coefficent); //Set Temp coefficent (max 4);
LCDWrite(0, 0x10 + bias); //LCD bias mode (max 15);
LCDWrite(0, 0x20); //We must send 0x20 before modifying the display control mode
LCDWrite(0, 0x0C); //Set display control, normal mode. 0x0D for inverse
}
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0xff;
DDRA=0xff;
// Port B initialization
// Func7=Out Func6=In Func5=Out Func4=Out Func3=In Func2=In Func1=In Func0=In
// State7=0 State6=T State5=0 State4=0 State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0xB0;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0xff;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0xff;
DDRD=0xff;
// SPI initialization
// SPI Type: Master
// SPI Clock Rate: 2000.000 kHz
// SPI Clock Phase: Cycle Half
// SPI Clock Polarity: Low
// SPI Data Order: MSB First
SPCR=0x50;
SPSR=0x00;
LCDInit(1,0,0);
LCDClear();
while (1)
{
// Place your code here
gotoXY(1,2);
LCDWrite(1,0x55);
delay_ms(10000);
};
}
các anh xem hộ em xem nó sai ở đâu mà em làm mãi nó không chạy được gì cả.
code của em.
#include <mega16.h>
#include <delay.h>
//#define DC PORTC.1;
//#define RESET PORTC.2;
//#define CS PORTC.3;
// SPI functions
#include <spi.h>
// Declare your global variables here
void spi_gui(unsigned char data)
{
PORTC.3=1;
delay_us(10);
PORTC.3=0;
SPDR=data;
while((SPSR & 0x80)==0);
PORTC.3=1;
}
void LCDWrite(char data_or_command, unsigned char data1)
{
if(data_or_command==0) PORTC.1=0;
else PORTC.1=1;
PORTC.3=0;
spi_gui(data1); // Send the data
PORTC.3=1;
}
void gotoXY(int x, int y)
{
LCDWrite(0, 0x80 | x); // Column.
LCDWrite(0, 0x40 | y); // Row.
}
void LCDClear() //Clears the LCD by writing zeros to the entire screen
{
unsigned int i;
for (i = 0 ; i < 504 ; i++) LCDWrite(1, 0x00);
gotoXY(0, 0); //After we clear the display, return to the home position
}
void LCDInit(unsigned char contrast,unsigned char coefficent,unsigned char bias) //This sends the magical commands to the PCD8544
{
PORTC.2=1; PORTC.3=1; PORTC.1=1; //Configure control pins
PORTC.2=0; //Reset the LCD to a known state
PORTC.2=1;
LCDWrite(0, 0x21); //Tell LCD that extended commands follow
LCDWrite(0, 0x80 + contrast); //Set contrast (max 127);
LCDWrite(0, 0x04 + coefficent); //Set Temp coefficent (max 4);
LCDWrite(0, 0x10 + bias); //LCD bias mode (max 15);
LCDWrite(0, 0x20); //We must send 0x20 before modifying the display control mode
LCDWrite(0, 0x0C); //Set display control, normal mode. 0x0D for inverse
}
void main(void)
{
// Declare your local variables here
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0xff;
DDRA=0xff;
// Port B initialization
// Func7=Out Func6=In Func5=Out Func4=Out Func3=In Func2=In Func1=In Func0=In
// State7=0 State6=T State5=0 State4=0 State3=T State2=T State1=T State0=T
PORTB=0x00;
DDRB=0xB0;
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0xff;
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0xff;
DDRD=0xff;
// SPI initialization
// SPI Type: Master
// SPI Clock Rate: 2000.000 kHz
// SPI Clock Phase: Cycle Half
// SPI Clock Polarity: Low
// SPI Data Order: MSB First
SPCR=0x50;
SPSR=0x00;
LCDInit(1,0,0);
LCDClear();
while (1)
{
// Place your code here
gotoXY(1,2);
LCDWrite(1,0x55);
delay_ms(10000);
};
}
các anh xem hộ em xem nó sai ở đâu mà em làm mãi nó không chạy được gì cả.
Comment