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Winstar wh1602a-ngg-cp to ATmega8 PortC ? 
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Alex_Sor

Joined: Wed Mar 10, 2010 4:09 pm
Posts: 2
Post Winstar wh1602a-ngg-cp to ATmega8 PortC ?
Please help me...
:|

I'm use Winstar WH1602a-NGG-CP LCD display.

electrical diagramm here:
http://www.pocketmagic.net/wp-content/u ... t-full.gif
Image

connect to ATmega8 to PORTC.

I'm dont undestand :( LCD dosn't work...

My prog here:
-------------------------------

/*****************************************************
CodeWizardAVR V1.25.9

Project : lcd-2
Version : 1
Date : 10.02.2010
Author : alex
Company : SVR
Comments:

Chip type : ATmega8
Program type : Application
Clock frequency : 16,000000 MHz
Memory model : Small
External SRAM size : 0
Data Stack size : 256
*****************************************************/

#include <mega8.h>

// Standard Input/Output functions
#include <stdio.h>
#include <delay.h>

// ==============================================
// Declare your global variables here

char i;
unsigned char pc;

void init_mylcd(void)
{
PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x03; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû

PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1); // delay = 1 milisecond
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x03; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

delay_ms(100);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x03; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x02; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x02; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x0C; // init N+F
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x00; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x08; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x00; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x01; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x00; // init !
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);

PORTC.4=0; // ïîäíèìàåì RS â 0
pc=0x07; // init ID+S
// pc|=0b00100000; // ïîäíèìàåì Å â 1
pc&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=pc; // âûâîäèì äàííûå èç ðñ
PORTC.5=1; // Å â 1
delay_ms(1);
PORTC.5=0; // ãàñèì Å â 0 - ò.å. äàåì ñòðîá.
delay_ms(5);
PORTC.4=1; // ïîäíèìàåì RS â 1
delay_ms(220);
}

void WriteIns(unsigned char instruction)
{
unsigned char tmp;

PORTC.4=0; // ïîäíèìàåì RS â 0
tmp=instruction>>4;
// tmp|=0b00100000; // ïîäíèìàåì Å â 1
tmp&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC=tmp; // âûâîäèì äàííûå
PORTC.5=1; // ïîäíèìàåì Å â 1
delay_ms(1);
PORTC.5=0; // ïîäíèìàåì Å â 0

// instruction|=0b00100000; // ïîäíèìàåì Å â 1
instruction&=0b00001111; // ãàñèì ñòàðø.áèòû
PORTC.4=0; // ïîäíèìàåì RS â 0
PORTC=instruction; // âûâîäèì äàííûå
PORTC.5=1; // ïîäíèìàåì Å â 1
delay_ms(1);
PORTC.5=0; // ïîäíèìàåì Å â 0
delay_ms(100);
}

void WriteData(unsigned char data1)
{
unsigned char tmp1;

PORTC.4=1; // ïîäíèìàåì RS â 1

tmp1=data1>>4;
// tmp1|=0b00110000; // ïîäíèìàåì Å è RS â 1
tmp1&=0b00011111; // ãàñèì ñòàðø.áèòû
PORTC=tmp1; // âûâîäèì äàííûå
PORTC.5=1; // ïîäíèìàåì Å â 1
delay_ms(1);
PORTC.5=0; // ïîäíèìàåì Å â 0

// data1|=0b00110000; // ïîäíèìàåì Å è RS â 1
data1&=0b00011111; // ãàñèì ñòàðø.áèòû
PORTC.4=1; // ïîäíèìàåì RS â 1
PORTC=data1; // âûâîäèì äàííûå
PORTC.5=1; // ïîäíèìàåì Å â 1
delay_ms(1);
PORTC.5=0; // ïîäíèìàåì Å â 0
delay_ms(100);
}


void main(void)
{
PORTB=0x00;
DDRB=0x00;

PORTC=0x00;
DDRC=0x7F;

PORTD=0x00;
DDRD=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
MCUCR=0x00;

// Global enable interrupts
#asm("sei")

while (1)
{
delay_ms(500);
init_mylcd();
// ---------------------

i=0;
pc=0;

for (i=0; i<20; i++)
{
WriteIns(0x00); // Óñòàíîâèëè êóð â 1 ïîç ïåð ñòðîê
WriteData(0x44); // âûâåëè "D"
WriteIns(0x01); // âòîð ïîçèöèÿ ïåð ñòîðîêè
WriteData(0x49); // âûâåëè "I"
WriteIns(0x02); // òðåòüÿ ïîçèöèÿ ïåð ñòîðîêè
WriteData(0x47); // âûâåëè "G"
WriteIns(0x03); // ÷åòâåðòàÿ ïîçèöèÿ ïåð ñòîðîêè
WriteData(0x49); // âûâåëè "I"
WriteIns(0x04); // ïÿòàÿ ïîçèöèÿ ïåð ñòîðîêè
WriteData(0x54); // âûâåëè "T"

delay_ms(500);

}
delay_ms(1000);
};
}

-------------------------------

LCD do not show me any data :(
please help...
Wed Mar 10, 2010 4:23 pm
Profile
allenyeh

Joined: Wed Dec 16, 2009 2:44 pm
Posts: 32
Post Re: Winstar wh1602a-ngg-cp to ATmega8 PortC ?
Dear Sir:
The circuit is fine.
If you just need to write into the module.
R/W pin connected to GND is ok.

Please check the voltage between VDD (pin2) & VEE (pin3) should be 3.8~4.5V.
The display will be seen.

And please check our reference code for this module in attach file.
Fri Mar 12, 2010 3:57 pm
Profile
allenyeh

Joined: Wed Dec 16, 2009 2:44 pm
Posts: 32
Post Re: Winstar wh1602a-ngg-cp to ATmega8 PortC ?
Attahc file.


Attachments:
KS0066_4BIT.zip [1.52 KiB]
Downloaded 58 times
Fri Mar 12, 2010 3:58 pm
Profile
Alex_Sor

Joined: Wed Mar 10, 2010 4:09 pm
Posts: 2
Post Re: Winstar wh1602a-ngg-cp to ATmega8 PortC ?
I'm solve this problem.
See my working code:

Code:
    void LcdWriteNibble (unsigned char a)
    {
    E=0;
    delay_us(2);
    LcdPort&=0xf0;       // ñáðàñûâàåì â "0" ìëàäøèå 4 áèòà ïîðòà
    LcdPort|=(a&0x0f);   // ìëàäøèå 4 áèòà ïåðåìåííîé "à" ïèøåì â ìëàäøèå áèòû ïîðòà
    delay_us(2);
    E=1;
    delay_us(2);
    E=0;
    delay_us(2);
    }                         
    //**************************************************
    void WaitBusy (void)
    {
    delay_us(150);
    }                   
    //**************************************************
    void LcdWriteCommand (unsigned char a)
    {
    E=0;
    RS=0;         
    LcdWriteNibble(a>>4);
    LcdWriteNibble(a);
    WaitBusy();
    }
    //**************************************************
    // Êîìåíòû çàòåðëèñü, íå ïîìíþ ÷òî òàêîå "à" (ëåíü ÷èòàòü ÄØ)
    // Íî äëÿ ñâîåãî 16õ2 "à"=16

    void lcd_init (void)
    {
   E=0;
   RS=0;
    delay_ms(20);
    LcdWriteNibble(0x30);
    delay_ms(7);
    LcdWriteNibble(0x30);
    delay_us(100);
    LcdWriteNibble(0x30); 
    WaitBusy();
    LcdWriteNibble(0x20);
    WaitBusy();                 
    LcdWriteCommand(0x28);
    LcdWriteCommand(0x08);
    LcdWriteCommand(0x01);
    delay_ms(20);
    LcdWriteCommand(0x06);
    LcdWriteCommand(0x0c);
    delay_ms(20);
    }

    //**************************************************
    void LcdWriteData (unsigned char a)
    {
    E=0;
    RS=1;
    LcdWriteNibble(a>>4);
    LcdWriteNibble(a);
    WaitBusy();
    }                   

    void lcd_putchar (unsigned char a)
    {
    E=0;
    RS=1;
    LcdWriteNibble(a>>4);
    LcdWriteNibble(a);
    WaitBusy();
    }                       
    //**************************************************

    void LcdSetPosition(unsigned char adr)
    {
    LcdWriteCommand(adr|0x80);
    }

    void lcd_gotoxy (char x,char y)
    {
    if(y == 0) LcdSetPosition(x);
    else LcdSetPosition(x + 0x40);
    }
    //**************************************************

    void LcdClrScr()
    {
    LcdWriteCommand(0x01);
    delay_ms(20);
    }

    void lcd_clear(void)
    {
    LcdWriteCommand(0x01);
    delay_ms(20);
    }   
    //**************************************************
    void LcdSetCGAdress(unsigned char adr)
    {
    LcdWriteCommand((adr&0x7f)|0x40);
    }   
    //**************************************************
    void lcd_write_byte(unsigned char addr, unsigned char data)
    {
    LcdWriteCommand(addr);
    LcdWriteData(data);
    }
     

    void lcd_puts(char *str)
    {
    char k;
    while ((k=*str++) != 0) lcd_putchar(k);
    }


//    void lcd_putsf(char flash *str)
    void lcd_putsf(char *str)
    {
    char k;
    while ((k=*str++) != 0) lcd_putchar(k);
    }
Fri Mar 12, 2010 4:01 pm
Profile
allenyeh

Joined: Wed Dec 16, 2009 2:44 pm
Posts: 32
Post Re: Winstar wh1602a-ngg-cp to ATmega8 PortC ?
That's good.
Tue Mar 16, 2010 8:23 am
Profile
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