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18f8722 and T6963c

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assaad

Joined: 09 Dec 2009
Posts: 37

18f8722 and T6963c

Posted: Mon May 24, 2010 11:52 am

Hi all,
I am using GLCD 240x 128.
I am using the driver from this thread:
http://www.ccsinfo.com/forum/viewtopic.php?t=31255

When I connect the control signals of the LCD to PortC 4-7, and using the driver without changing it works great.
But in my real hardware I am using PortJ 4-7 for control signals. I modified the driver to PortJ, but still I could not see anything on the LCD.
I have been trying for 2 days. I wish you can help to solve the problem.

Here the source code for test :

Code:

#include <18F8722.h>
//#device *=16
//#device adc=10
#use delay(clock=4000000)//,RESTART_WDT)
#use rs232(baud=9600, xmit=PIN_A2,rcv=PIN_A3)
#fuses NOWDT,HS, NOPUT, PROTECT, BROWNOUT, NOLVP, NOCPD, NOWRT, NODEBUG,MCU

#include <T6963C2.c>

void main() {
int n;
int8 bt_logo[11] = { //8x11 picture
0b00010000, // XX
0b00011000, // XXXX
0b00010100, // XX XX
0b01010010, // XX XX XX
0b00110100, // XXXX XX
0b00011000, // XXXX
0b00110100, // XXXX XX
0b01010010, // XX XX XX
0b00010100, // XX XX
0b00011000, // XXXX
0b00010000 // XX
};

glcd_init(240,128);
glcd_WriteByte(1, (LCDModeSet|LCDMode_XOR));
glcd_WriteByte(1, (LCDDispMode|LCDDisp_TXT|LCDDisp_GRH));
glcd_gotoxy(3,0,1); // 1 = text area of memory; note that there are only
// 8 rows of text possible
glcd_putc("HELLO ");

glcd_gotoxy(4,1,1); // 1 = text area of memory; note that there are only
// 8 rows of text possible
glcd_putc("WELCOME");

glcd_line(1,100,200,100,1);
glcd_image8(&bt_logo[0],212,40,8,11);

glcd_line(1,50,1,100,1);

glcd_square(2,32,130,113,1);
// glcd_box(25,25,50,40,1);
// glcd_box(60,30,100,60,0);

glcd_line(3,6,20,50,1);
glcd_line(100,40,210,20,1);
glcd_box(14,14,100,60,1);
glcd_box(60,30,100,60,0);
glcd_square(20,12,180,50,1);
glcd_image8(&bt_logo[0],212,40,8,11);
glcd_image8(&bt_logo[0],216,40,8,11);

glcd_line(30,6,200,100,1);

glcd_square(2,32,130,113,1);

glcd_image8(&bt_logo[0],26,110,8,11);
}

here is the driver

Code:

/////////////////////////////////////////////////////////////////////////
//// T6963C2.c - T6963C driver ////
//// Not for comercial Use ////
//// Driver by treitmey Graphic functions and Resolution Select ////
//// by endSly ([email protected]) ////
//// ////
//// This file contains drivers for using a Tosiba T6963C controller ////
//// in parallel/8080(intel) mode. The T6963C is 240 pixels across ////
//// and 64 pixels down. The driver treats the upper left pixel 0,0 ////
//// ////
//// Connections are as follows: ////
//// /WR - - j4 ////
//// /RD - - j5 ////
//// C//D- - j6 ////
//// /RST- - j7 ////
//// DATA0-7 PORTD0-7 ////
//// LCD's FS is tied low (FS = 0 is 8x8 font) ////
//// ////
/////////////////////////////////////////////////////////////////////////

// 240 x 64 in the 8x8 font mode means that 30 characters across by
// 8 rows of characters may be displayed

#define set_tris_lcd(x) set_tris_d(x)
#define LCDColorBlack 0b1
#define LCDColorWhite 0b0

//TRIS DataBus=x, note:control bus (PORTC) always outputs
unsigned int16 TextHome = 0x0F00;//0x0780;
const int8 TextArea = 0x001E; // how many bytes before a new line
const int16 GraphicsHome = 0x0000;
const int8 GraphicsArea = 0x001E; // how many bytes before a new line

const int8 AutoModeWrite = 0xB0;
const int8 AutoModeRead = 0xB1;
const int8 AutoModeReset = 0xB2;

const int8 LCDModeSet = 0x80; // send this OR'd with the following
const int8 LCDMode_OR = 0b0000;
const int8 LCDMode_XOR = 0b0001;
const int8 LCDMode_AND = 0b0010;
const int8 LCDMode_TA = 0b0100; // TEXT ATTRIBUTE mode.
const int8 LCDMode_RAM = 0b1000; // 1=CG RAM, 0=internal CG ROM

const int8 LCDSetCursorPtr = 0x21; // cursor address
const int8 LCDSetCursorSize = 0xA0; // 1 line cursor

const int8 LCDDispMode = 0x90; // send this OR'd with the following
const int8 LCDDisp_BLK = 0b0001;
const int8 LCDDisp_CUR = 0b0010;
const int8 LCDDisp_TXT = 0b0100;
const int8 LCDDisp_GRH = 0b1000;

const int8 LCDBitSet = 0xF8;
const int8 LCDBitReset = 0xF0;
const int8 LCDBit0 = 0b000;
const int8 LCDBit1 = 0b001;
const int8 LCDBit2 = 0b010;
const int8 LCDBit3 = 0b011;
const int8 LCDBit4 = 0b100;
const int8 LCDBit5 = 0b101;
const int8 LCDBit6 = 0b110;
const int8 LCDBit7 = 0b111;

const int8 LCDSetPtr = 0xE0;

struct lcd_pin_def
{
BOOLEAN unused1; // j0
BOOLEAN unused2; // j1
BOOLEAN unused3; // j2
BOOLEAN unused4; // j3

BOOLEAN w_bar; // j4 Write bar active low
BOOLEAN r_bar; // j5 Read bar active low
BOOLEAN cd; // j6 Command/Data BAR 1=command 0=data
BOOLEAN reset_bar; // j7 Reset active low

int data : 8; // PortD=Data bus
};
struct lcd_pin_def LCD;

#byte LCD = 0xf88 // portj address on 18F8722

int glcd_ReadByte(void);
void glcd_WriteByte(int1 cd, int data);
void glcd_WriteByteAuto(int data);
void glcd_WriteCmd2(int16 data, int cmd);
void glcd_WriteCmd1(int data, int cmd);
void glcd_gotoxy(int x, int y, int1 text);

#inline
void glcd_init(unsigned int16 res_x, unsigned int16 res_y) {

int16 counter;

TextHome = (res_x/8)*res_y; //0x0F00;//0x0780;

set_tris_J(0x00); // graphic lcd control lines all output
set_tris_lcd(0xff); //TRIS DATA bus,note:control bus always outputs

LCD.w_bar = 1; // INITIAL STATES OF CONTROL PINS
LCD.r_bar = 1; //
LCD.cd = 1; // command

LCD.reset_bar = 0; // perform a reset
delay_us(10); // delay for a reset
LCD.reset_bar = 1; // run

// Set up the graphics and text areas
glcd_WriteCmd2(TextHome, 0x40);
glcd_WriteCmd2(TextArea, 0x41);
glcd_WriteCmd2(GraphicsHome, 0x42);
glcd_WriteCmd2(GraphicsArea, 0x43);

// set address to 0
glcd_WriteCmd2(0x0000, 0x24);
glcd_WriteCmd2(0x0000, 0x24);

// Clear all RAM of LCD (8k)
glcd_WriteByte(1, AutoModeWrite);
for (counter = 0; counter < 0x1fff; counter++)
{
glcd_WriteByteAuto(0); // fill everything with zeros
}
glcd_WriteByte(1, AutoModeReset);
}

void glcd_WriteByte(int1 cd, int data)
{
int status = 0, temp = 0;
set_tris_lcd(0xff);
LCD.w_bar = 1;
LCD.r_bar= 1;
LCD.cd = 1;//defaults

while (status != 0x03) { // is LCD busy?
LCD.r_bar= 0;
temp = LCD.data;
LCD.r_bar = 1;
status = temp & 0x03;
}

set_tris_lcd(0x00); // All outputs
LCD.cd = cd; // Command/Data bar
LCD.data = data;
LCD.r_bar = 1; // not read
LCD.w_bar = 0; // write
LCD.w_bar = 1; // release
}

void glcd_WriteByteAuto(int data)
{
int status = 0, temp = 0; // status bits ARE DIFFERENT BITS THAN NORMAL
set_tris_lcd(0xff);
LCD.w_bar = 1;
LCD.r_bar = 1;
LCD.cd = 1; // defaults

while (status != 0x08) { // is LCD busy?
LCD.r_bar = 0;
temp = LCD.data;
LCD.r_bar = 1;
status = temp & 0x08;
}

set_tris_lcd(0x00); // All outputs
LCD.cd = 0; // This is always data, cd=0
LCD.data = data; // Put data on data bus
LCD.w_bar = 0; // write
LCD.w_bar = 1; // release
}

void glcd_WriteCmd1(int data, int cmd)
{
glcd_WriteByte(0, data);
glcd_WriteByte(1, cmd);
}

void glcd_WriteCmd2(int16 data, int cmd)
{
glcd_WriteByte(0, data & 0xff);
glcd_WriteByte(0, data>>8);
glcd_WriteByte(1, cmd);
}

int glcd_ReadByte(void)
{
int data = 0, status = 0, temp = 0;
set_tris_lcd(0xff);
LCD.w_bar = 1;
LCD.r_bar = 1;
LCD.cd = 1; // defaults

#asm nop #endasm

while (status != 0x03) { // is LCD busy?
LCD.r_bar = 0;
temp = LCD.data;
LCD.r_bar = 1;
status = temp & 0x03;
}

LCD.cd = 0; // Command/Data bar
LCD.r_bar = 0; // read
/////////////////////////////////////////////////////////
#asm nop #endasm // THIS PAUSE IS VERY NESSESARY !!!//
/////////////////////////////////////////////////////////
data = LCD.data;
LCD.r_bar = 1;
LCD.cd = 1;
return data; // Return the read data
}

void glcd_putc(char c) {
glcd_WriteCmd1(c - 0x20, 0xc0);
}

void glcd_gotoxy(int x, int y, int1 text) { // sets memory location to screen location x, y
// location 1,1 is upper left corner; text = 1 (text area), text = 0 (graphics area)
int16 location, home;
int line;

if (!text) {
home = GraphicsHome;
line = GraphicsArea;
} else {
home = TextHome;
line = TextArea;
}

location = home + (((int16)y) * line) + x;
glcd_WriteCmd2(location, 0x24);
}

// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
// Purpose: Clears LCD RAM
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - //
void glcd_clr(int16 location,int16 size)
{
////fprintf(DEBUG,"loc=%lu size=%lu\n\r",location,size);
// look very simular to the init,... doesn't it. : )
glcd_WriteCmd2(location,LCDSetPtr);
glcd_WriteCmd1(1,AutoModeWrite);
for (;size;size--)
{
glcd_WriteByteAuto(0x00);//clear ram
}
glcd_WriteCmd1(1,AutoModeReset);
}

/////////////////////////////////////////
// Graphics Controller by endSly (c)2007
// [email protected]
// Not for comercial use
/////////////////////////////////////////

unsigned int8 i; //General Purpouse variable

// glcd_pixel(x,y,c) sets pixel x,y with c color
void glcd_pixel(unsigned int8 x, unsigned int8 y, int1 c){
unsigned int8 x_H;
unsigned int8 x_L=0;
x_H = (x / 8);
x_L = 7 - (x - 8*x_H);
glcd_gotoxy(x_H,y,0); //Bug fixed, thanks to etiedon
if(c){
glcd_WriteCmd1(1,(LCDBitSet|x_L));
} else {
glcd_WriteCmd1(1,(LCDBitReset|x_L));
}
}

// glcd_pixel8(x,y,px8) sets 8 pixels in line.
void glcd_pixel8(unsigned int8 x, unsigned int8 y, int8 pixel8){
unsigned int8 x_H;
x_H = (x / 8);
glcd_gotoxy(x_H+1,y,0);
glcd_WriteCmd1(pixel8,0xc0);
}

// glcd_line(x0,y0, x1,y1, c) puts line from (x0, y0) to (x1, y1) with c color
#separate
void glcd_line(signed int16 x0, signed int16 y0,
signed int16 x1, signed int16 y1 , int1 c){
int16 x;
int16 y;
unsigned int16 n;
int1 m_case;

x=abs(x1-x0);
y=abs(y1-y0);

if (y > x){
n=(y1-y0);
m_case=1;
} else {
n=(x1-x0);
m_case=0;
}
for(i=0 ; i<=n ; i++){
if (m_case){
y=i + y0;
x=(y*(x1-x0))/(y1-y0) + x0;
} else {
x=i + x0;
y=(x*(y1-y0))/(x1-x0) + y0;
}
glcd_pixel(x, y,c);
}

}

// glcd_square(x0,y0,x1,y1, c) sets square
void glcd_square( unsigned int8 x0, unsigned int8 y0,
unsigned int8 x1, unsigned int8 y1 , int1 c){
glcd_line(x0,y0, x1,y0, c);
glcd_line(x1,y0, x1,y1, c);
glcd_line(x0,y1, x1,y1, c);
glcd_line(x0,y0, x0,y1, c);
}

// glcd_box(x0,y0,x1,y1, c)
void glcd_box( unsigned int8 x0, unsigned int8 y0,
unsigned int8 x1, unsigned int8 y1 , int1 c){
unsigned int8 x;
unsigned int8 y;
for(y=y0; y<=y1;y++){
for(x=x0; x<=x1;x++){
if((!(x%8)) && ((x1-x)>8)){
glcd_pixel8(x,y,0xFF*c); //Same time to write 8 pixel
x +=7 ;
} else {
glcd_pixel(x,y,c);
}
}
}
}

//glcd_image8 (*Pic, x, y, size_x, size_y)
void glcd_image8(int8 *pic_px, unsigned int8 x, unsigned int8 y,
unsigned int8 size_x, unsigned int8 size_y){

unsigned int8 px_y;
unsigned int8 px_x;
unsigned int8 px=0;

for(px_y=y; px_y<(y+size_y); px_y++){
for(px_x=x; px_x<(x+size_x); px_x+=8){
glcd_pixel8(px_x, px_y, *(pic_px+px));
px+=1;
}
}
}
#use fast_io(D)

The data port is still PortD.

Thank you

PCM programmer

Joined: 06 Sep 2003
Posts: 21708


Posted: Mon May 24, 2010 12:03 pm

See this thread about how to enable PortJ for normal i/o: http://www.ccsinfo.com/forum/viewtopic.php?t=23622

assaad

Joined: 09 Dec 2009
Posts: 37

Posted: Tue May 25, 2010 1:53 am

thank you PCM for fast reply

I did what you said ,
infact the main problem was in the header structure of LCD

the old one was :

Code:

struct lcd_pin_def
{
BOOLEAN unused1; // j0
BOOLEAN unused2; // j1
BOOLEAN unused3; // j2
BOOLEAN unused4; // j3

BOOLEAN w_bar; // j4 Write bar active low
BOOLEAN r_bar; // j5 Read bar active low
BOOLEAN cd; // j6 Command/Data BAR 1=command 0=data
BOOLEAN reset_bar; // j7 Reset active low

int data : 8; // PortD=Data bus
};
struct lcd_pin_def LCD;

#byte LCD = 0xf88 // portj address on 18F8722

lcd.data was mapped to LATA
so I have to change it to

Code:

struct lcd_pin_def
{

int data : 8; // PortD=Data bus

int unused_data1 : 8; // Porte
int unused_data2 : 8; // Portf
int unused_data3 : 8; // Portg
int unused_data4 : 8; // Porth

BOOLEAN unused1; // j0
BOOLEAN unused2; // j1
BOOLEAN unused3; // j2
BOOLEAN unused4; // j3

BOOLEAN w_bar; // j4 Write bar active low
BOOLEAN r_bar; // j5 Read bar active low
BOOLEAN cd; // j6 Command/Data BAR 1=command 0=data
BOOLEAN reset_bar; // j7 Reset active low

};
struct lcd_pin_def LCD;

#byte LCD = 0xf83 // portd address on 18F8722

now it works , but is there any other simpler way to define lcd.data as portd in the old structure ?

Thank you

kurusaray19

Joined: 22 Dec 2011
Posts: 1


Posted: Thu Dec 22, 2011 3:52 am

Hello. I have a question you would have friends. I need the code according to the chart below. glcd winstar WG24064A. PIC 18F8722 for. WR=E3 RD=E4 CE=E5 CD=E6 RST=E7 DATA PINS = PORTD

CeMiL_mktrnk

Joined: 21 Mar 2012
Posts: 4

Posted: Wed Mar 21, 2012 8:13 am

noyz wrote:

Code:

//// Connections are as follows: ////
//// /WR - - C4 ////
//// /RD - - C5 ////
//// C//D- - C6 ////
//// /RST- - C7 ////
//// DATA0-7 PORTD0-7 ////
//// LCD's FS is tied low (FS = 0 is 8x8 font) ////

How can I change this?
I have a board already connected and need to redefine those.
For example the data pins from glcd are H0-H7 instead d0-d7 on pic.
Pic used is 18f8527.

data pins from glcd are B0-B7 instead d0-d7 on pic.
Pic used is 18f4620.
But control pins arent all any port. For example I use d3, d2, d1 and d7 pins for data write, data read, C/D and reset, I use d0, d4, d5 for SPI. Also I will connect MS2 to e1 and FS1 to e2.

Can you send me upgrated driver or explain where I have to change?
Please help me urgently

CeMiL_mktrnk

Joined: 21 Mar 2012
Posts: 4


Posted: Mon Mar 26, 2012 2:19 am

Is there anybody who can help me? It is urgent.

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