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Ttelmah
Joined: 11 Mar 2010
Posts: 19569
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 Posted: Wed Feb 14, 2018 10:08 am |
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As an update, I've just been running this with the SSD1309 (gives larger displays like 2.4"), and it runs fine. Only thing that gave problems was I found these needed a reset signal to stay low for a little while after power was applied to work reliably (ended up using a capacitor on the RES line), for reliable operation. Because this takes time, I had to pause for longer at boot. With this done works well.  |
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-Terppa-
Joined: 08 Jan 2018
Posts: 60
Location: Finland
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| Posted: Wed Mar 28, 2018 5:02 am |
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Thank you very much for this driver Mr Ttelmah!
I have SSD1309 module which is modified on I2C- mode and it works great. |
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benoitstjean
Joined: 30 Oct 2007
Posts: 566
Location: Ottawa, Ontario, Canada
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| Posted: Tue Apr 03, 2018 7:15 pm |
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Compiler: 5.026
Device: PIC18F14K50
Hi TTelmah,
I've successfully used your SSD1306 driver on an 128x64 display but I changed my display to a miniature one (0.49") 64x32.
The display initializes fine and I have just started to look through the pages but perhaps you may have some insight that will be faster than me trying to re-invent the wheel.
I appears that the address mapping is off because if I write the following:
| Code: |
size = NORMAL;
OLED_gotoxy( 0, 0 );
OLED_text( "ABCDEFGHIJKLMNOP", 26 );
OLED_gotoxy( 0, 1 );
OLED_text( "zyxwvutsrqponmlk", 26 );
OLED_gotoxy( 0, 2 );
OLED_text( "abcdefghijklmnop", 26 );
OLED_gotoxy( 0, 3 );
OLED_text( "ZYXWVUTSRQPONMLK", 26 );
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All 4 lines contain text. But the problem is that the first character of each line is cut in half and starts at the 6th character.
So:
First line starts at half of letter 'F' and ends at letter 'P'.
Second starts at half of letter 'u' and ends at letter 'k'.
Third line starts at half of letter 'f'' and ends at letter 'p'.
Fourth line starts at half of letter 'U' and ends at letter 'K'.
When I say "starts at half", each character is 5 pixels wide but letter 'F', I don't see the first two columns.
I'll continue to read through your code and the datasheets but if you know off the top of your head, please let me know.
Thanks!
Benoit |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19569
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| Posted: Wed Apr 04, 2018 6:58 am |
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The 64 column displays have the starting value offset.
If you look at the github library here:
<https://github.com/WaiakeaRobotics/Adafruit_SSD1306/blob/master/Adafruit_SSD1306.cpp>
They offset by 0x20, and by 3 on the page address values. You'll need to do the same. |
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benoitstjean
Joined: 30 Oct 2007
Posts: 566
Location: Ottawa, Ontario, Canada
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| Posted: Wed Apr 04, 2018 7:26 am |
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That's what I thought it was by looking closer at the specs this morning. Ok, I'll give it a try tonight.
Thanks a million! You rock!
Benoit |
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benoitstjean
Joined: 30 Oct 2007
Posts: 566
Location: Ottawa, Ontario, Canada
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| Posted: Wed Apr 04, 2018 9:00 pm |
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So I tried the offset and still no success.
I looked at the code you suggested and I don't see in that code where the "void Adafruit_SSD1306::display(void)" function is used and that's where the S_COLUMNADDR and S_PAGEADDR are used. I compared my initialization sequence below with the one you referred to and they are the same except for S_COLUMNADDR and S_PAGEADDR which I added after S_MEMORYMODE and still that doesn't have any effect.
I took your ROM BYTE init_sequence[] structure and added / modified the missing commands (S_COLUMNADDR and S_PAGEADDR):
| Code: |
ROM BYTE init_sequence[] = S_DISPLAYOFF, // 0xAE - Turn off oled panel
S_SETDISPLAYCLOCKDIV, // 0xD5 - Set display clock divide ratio/oscillator frequency
0x80, // - Set divide ratio
S_SETMULTIPLEX, // 0xA8 - Set multiplex ratio(1 to 64)
0x1F, // - 1/32 duty
S_SETDISPLAYOFFSET, // 0xD3 - Set display VERTICAL offset
0x00, // - Not offset
S_SETSTARTLINE, // 0x40 - Set start line address
S_CHARGEPUMP, // 0x8D - Set Charge Pump enable/disable
0x14,
S_MEMORYMODE, // 0x20 - Set memory adressing mode
0x00,
S_COLUMNADDR, // 0x21 - Set column address
0x20,0x5F, <-- Here, based on the calculations, it should be 0x20 + (64-1) = 0x5F since my OLED is a 64x32
S_PAGEADDR, // 0x22 - Set page address
0x00,0x03,
S_SEGREMAP | 0x01, // 0xA1 - Set segment re-map
S_COMSCANDEC, // 0xC8 - Set COM Output Scan Direction 64 to 0
S_SETCOMPINS, // 0xDA - Set com pins hardware configuration
0x12,
S_SETCONTRAST, // 0x81 - Set contrast control register
0xCF, // (0x4F is lower contrast)
S_SETPRECHARGE, // 0xD9 - Set pre-charge period
0xF1,
S_SETVCOMDETECT, // 0xDB - Set vcomh
0x40, // - Start line
S_DISPLAYALLON_RESUME, // 0xA4 - Resume Entire Display On
S_NORMALDISPLAY, // 0xA6 - Set normal display
S_DISPLAYON; // 0xAF - Turn on oled panel
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As it stands now, I am trying to print the following:
| Code: |
OLED_gotoxy( 0, 0 );
OLED_text( "ABCDE98765", 10 );
OLED_gotoxy( 0, 2 );
OLED_text( "abcde01234", 10 );
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The screen seems to be split in half with the right half being just random pixels on and off. The left half contains two lines. Each line is cut in half at #9 on the first line and #0 on the second line.
For the life of me, this should be quite simple. It's just a bunch of commands.
Any ideas are welcome.
Thanks again,
Ben |
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benoitstjean
Joined: 30 Oct 2007
Posts: 566
Location: Ottawa, Ontario, Canada
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| Posted: Thu Apr 05, 2018 5:06 pm |
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Got it! Yes!!
So two things need to be done to the driver in order for the 64x32 OLED (0.49") displays to work:
1) Modify the initialization function to the following:
| Code: |
ROM BYTE init_sequence[] = S_DISPLAYOFF, // 0xAE - Turn off oled panel
S_SETDISPLAYCLOCKDIV, // 0xD5 - Set display clock divide ratio/oscillator frequency
0x80, // - Set divide ratio
S_SETMULTIPLEX, // 0xA8 - Set multiplex ratio(1 to 64)
0x1F, // - 1/32 duty
S_SETDISPLAYOFFSET, // 0xD3 - Set display VERTICAL offset
0x00, // - Not offset
S_SETSTARTLINE, // 0x40 - Set start line address
S_CHARGEPUMP, // 0x8D - Set Charge Pump enable/disable
0x14,
S_MEMORYMODE, // 0x20 - Set memory adressing mode
0x00,
S_SEGREMAP | 0x01, // 0xA1 - Set segment re-map
S_COMSCANDEC, // 0xC8 - Set COM Output Scan Direction 64 to 0
S_SETCOMPINS, // 0xDA - Set com pins hardware configuration
0x12,
S_SETCONTRAST, // 0x81 - Set contrast control register
0xCF, // (0x4F is lower contrast)
S_SETPRECHARGE, // 0xD9 - Set pre-charge period
0xF1,
S_SETVCOMDETECT, // 0xDB - Set vcomh
0x40, // - Start line
S_DISPLAYALLON_RESUME, // 0xA4 - Resume Entire Display On
S_NORMALDISPLAY, // 0xA6 - Set normal display
S_DISPLAYON; // 0xAF - Turn on oled panel
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2) In this function, add the 4-line snippet indicated below:
| Code: |
void OLED_address(unsigned int8 x, unsigned int8 y)
{
//routine to move the memory pointers to x,y.
//x is 0 to 127 (column), y (row) is 0 to 7 (page only)
#ifdef SH1106
x+=2;
#endif
i2c_start();
i2c_write (SSDADDR); //select the display
i2c_write(COMMAND_ONLY); //we are sending command(s)
//-------------- ADD FROM HERE --------------
#define OLED_64x32
#ifdef OLED_64x32
x+= 0x20; // Add 0x20 offset
#endif
//------------------- TO HERE ------------------
i2c_write(S_ROWADDRESS | y); // 0xB0 - select the display row
i2c_write(S_SETLOWCOLUMN | ( x & 0x0F )); // 0x00 - low col address
i2c_write(S_SETHIGHCOLUMN | (( x >> 4 ) & 0x0F)); // 0x10 - high col address
i2c_stop();
} //also made more efficient
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So this works on the 0.49" OLED displays found on Ebay like this one:
<https://www.ebay.ca/itm/Blue-0-49-inch-OLED-Display-Module-128-32-0-49-I2C-IIC-for-Arduino-Best-glf/152750867470?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649>
Note that when I say "works", I mean that displaying the following code lines works fine:
| Code: |
OLED_commands( init_sequence, sizeof( init_sequence )); // Initialise OLED display
set = TRUE; // Set background to black
size = NORMAL;
OLED_CLS();
OLED_gotoxy( 0, 0 );
OLED_text( "ABCDE98765", 10 );
OLED_gotoxy( 0, 1 );
OLED_text( "abcde01234", 10 );
OLED_gotoxy( 0, 2 );
OLED_text( "abcdefghiJ", 10 );
OLED_gotoxy( 0, 3 );
OLED_text( "ZYXWVUTSRQ", 10 );
while( 1 );
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Prior to that, the lines would start to get displayed at the half of the 5th character then garbage was on the screen. Now everything is properly aligned.
Thanks!
Ben |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19569
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| Posted: Sat Apr 14, 2018 11:14 pm |
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Well done,
Sorry I wasn't able to help much. I've been away. |
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adrianleal
Joined: 16 May 2018
Posts: 1
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| AdrianLeal |
| Posted: Wed May 16, 2018 3:37 pm |
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| Ttelmah wrote: | I do a large logo on one of my units.
I just have it declared in ROM as:
| Code: |
ROM BYTE const Plogo[] =
{
//With 512 bytes of data here.
};
//Then send it with:
//Move a line from the ROM array into RAM
void get_line(ROM BYTE *array, BYTE * target)
{
int16 ctr;
for (ctr=0;ctr<64;ctr++)
*(target++) = array[ctr*8];
}
void draw_logo(void)
{
BYTE line[64];
signed int16 y;
//routine to write the logo
//Logo is in a 512 byte array, designed to occupy the second half of the screen
//each row on the screen is every eighth byte along the array
set=TRUE;
size=NORMAL;
OLED_cls();
for (y=7;y>=0;y--)
{
OLED_address(62,7-y); //position the display
get_line(&logo[y],line); //64 bytes
OLED_data(line,64);
}
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The key is the use of OLED_address then OLED_data to send a line of data.
It's a decision you would have to make as to whether you should write a version accepting constant data or (as I do), just buffer the lines.
This occupies the right hand half of the screen.
Have fun. |
Hello
the code works perfect Thank you very much
I am occupying it with PIC18F4550 at 48Mhz. with USB connection with frimware load by Bootloader.
I wanted to incorporate characters like the Bluetooth symbol; Logo and others. But here I can not do it.
You could publish or send me a more explicit code. I'm not very good at this.
Thank you so much 
_________________
AdrianLeal |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue May 22, 2018 2:21 am |
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| adrianleal wrote: |
I wanted to incorporate characters like the Bluetooth symbol; Logo and others. |
The Bluetooth symbol is a stylized letter "B".
You could start with the definition for "B" from
Ttelmah's font table, and edit it to look more
like the Bluetooth symbol.
Here is the line from the font table for "B":
| Code: | 0xFE, 0x92, 0x92, 0x92, 0x6C, 0x00
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I have translated each byte into its binary
sequence below. An 'x' represents a '1' bit
and a '-' represents a '0' bit. So 0xFE is
1111 1110, or xxxx xxx-.
In the pattern below, you can see the letter 'B'
laying on it's side, facing down.
| Code: |
xxxxxxx- 0xFE
x--x--x- 0x92
x--x--x- 0x92
-xx-xx-- 0x6C
-------- 0x00 |
You can try to modify it into a Bluetooth symbol, but
you don't have very many dot positions to work with.
These characters use a 5x7 font cell. (5 dots wide,
and 7 dots tall). |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19569
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| Posted: Sat May 26, 2018 1:34 pm |
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| If you don't want small characters, modify one of the characters in the 'big' fonts. These are twice the size, designed to give much nicer shaped characters, and more space for changes. These are 16*12 pixels. However you only then get 10 characters per line and four lines of text. |
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Manu59114
Joined: 22 Jan 2018
Posts: 34
Location: North of France
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| Posted: Sun Jul 29, 2018 4:33 pm |
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Hi Ttelmah,
I migrated my (your) ssd1306 code from a PIC18f46K80 to a dsPIC33EP512MU810 and everything works fine with no compilation errors, but when i want to draw my logo with draw_logo nothing happens.
Same code on the PIC18, i can see my logo!
There is a special thing to know with a dsPIC33?
Wish you a great day.
Manu
_________________
CCS + ICD3 + PIC18F46K80 |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19569
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| Posted: Mon Jul 30, 2018 1:10 am |
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I'm using it on two PIC24/33's without problems.
Obvious key thing is the declaration of the logo. Needs to be:
| Code: |
ROM byte const Logo[] = {
////data here
};
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Careful not to use 'int', since on a PIC24/30/33, this is an int16.
As shown, draw_logo requires a 512byte array. There is no reason it can't be tweaked to send a different size.
Is the display working otherwise?. I had issues on the faster processors with needing a longer delay at boot. Also using the SSD1309 displays, these would not reliably initialise without a reset signal. Obvious things also apply, making sure the clock settings are right so you are not overclocking the I2C. |
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Manu59114
Joined: 22 Jan 2018
Posts: 34
Location: North of France
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| Posted: Mon Jul 30, 2018 3:04 am |
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thanks Tthelma for your quick reply.
Yes, the 0.93 oled display works fine.
What is strange is that i can do everything, write text in different size, but not draw_logo!
Same code on my PIC18 works fine!
| Code: |
#include <TEST 1 CCS.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
#ZERO_RAM
// ======== OLED DISPLAY
int8 DEGREE=0;
int8 LETTC=0;
unsigned int8 ctr=100;
//display dimensions - the physical LCD
#define S_LCDWIDTH 128
#define S_LCDHEIGHT 64
//If you want to use the SH1106, add this #define
//#define SH1106
#define TEXT_ONLY //If this is defined, gives a smaller text driver only
//Size of graphics 'window' see the graphics section for explanation
//#define WINDOW_WIDTH 64
//#define WINDOW_HEIGHT 16 //sizes of the graphic window in pixels
//height must be a multiple of 8. //these must now be defined
#define SSDADDR 0x78 //address for the chip - usually 0x7C or 0x78.
#define BIG_PLUS
#include "ssd1306.h" //The OLED driver
#include "courier.h" //The OLED driver
#include <NUM12.h> //Load the large font for numeric and controls
// END OLED DISPLAY
int1 level=0;
void main()
{
//set_pullup(true, PIN_D10);
//set_pullup(true, PIN_D9);
setup_timer1(TMR_INTERNAL | TMR_DIV_BY_1, 0);
//*****************************************************************************
//********************* TEST & INIT OLED DISPLAY ******************************
//*****************************************************************************
int8 ctr;
char text[9]; //temporary text buffer
delay_ms(500); //OLED takes time to wake
//now try to initialise OLED
OLED_commands(init_sequence,sizeof(init_sequence)); //initialise the OLED
//Now try some text
set=TRUE; // ecran mode non inversé
size=NORMAL; // Taille police normale
OLED_CLS(); // Effacer l'écran physique
draw_logo(); // DESSINE LE LOGO DEFINIT DANS LA TABLEAU DE 512 BYTES (DRIVER SSD1306)
delay_ms(2000); //pause for two seconds
OLED_CLS(); // Effacer l'écran physique
size=NORMAL;
//Example blinking LED program
while(true)
{ /*
output_low(LED);
delay_ms(DELAY);
output_high(LED);
delay_ms(DELAY);
*/
level = input_state(SW3);
output_bit( LED_RED, !level);
output_bit( LED_YELLOW, level);
output_toggle( LED_GREEN);
size=NORMAL;
OLED_CLS(); //clear the physical screen
OLED_gotoxy(0,0);
strcpy(text,"Hello");
OLED_text(text,strlen(text)); //This is the fastest way to write text
delay_ms(1000); //pause for two seconds
OLED_gotoxy(0,4);
size= LARGE;
OLED_text(text,strlen(text)); //try some large text
delay_ms(1000);
//Now the printf mode
size=LARGE;
//now testing putc
printf(OLED_putc,"\f12345\n\r67890\n\r");
//Note how the line feed moves down by the large line when in
//large mode
delay_ms(1000);
//Now printf in normal mode to the same screen
size=NORMAL;
printf(OLED_putc,"ABCDEFGHI");
delay_ms(1000); //delay again so you can see what it has done
//Now mixed size with a bar graph
size=LARGE;
printf(OLED_putc,"\fV=");
delay_ms(1000); //delay again so you can see what it has done
draw_logo(); // Draw the logo
delay_ms(1000); //delay again so you can see what it has done
level = input_state(PIN_D10);
fprintf(UART_PORT1,"PIN_D10=%d",level);
fprintf(UART_PORT1,"HELLO WORLD");
delay_ms(250);
output_toggle(PIN_D9);
output_toggle(PIN_D10);
}
} |
| Code: |
/*
Now the big limitation.....
In serial modes (SPI/I2C), this chip provides no ability to read back it's RAM.
So we have a problem. If we want to write a line across the screen, and leave
another line that is already there 'undestroyed' where they cross, how can we
'know' the other line is there?. Basically the host chip needs to have a copy
of the display memory so it can hold a copy of any graphics and know what is
going on. Problem is that this is just not possible, on a PIC with limited RAM.
So this driver works by overwriting for all text writes....
But see further down for the 'exception' to this.
*/
//It is most efficiently used by preparing the whole line of text first
//and then sending this - it then uses a 'burst' transmission, to give very
//fast updates. It does offer a 'putc' though, but this is slower.
//It does not properly handle wrapping at the end of the line.
//The putc function adds support for \n, \r, and \f.
//Functions:
// OLED_CLS(); //clears the screen
// OLED_gotoxy(x, y); //goto column/row 0-20 for the column
// //0-7 for the row
// OLED_text(*text, number);
// //This sends 'number' bytes from the array
// //pointed to by 'text', to the display
// OLED_putc(c); //sends 'c' to the display. Beware though
// //if you go beyond the end of the line
// //- you'll get partial characters....
// OLED_textbar(width); //Displays a bargraph. With width=50
// //you get a 50:50 display of bar/void.
//Two global variables affect how things are displayed.
// size=NORMAL;
// size=LARGE; //switches between showing 21*8 & 10*4
// size=DOUBLE_HEIGHT //Gives 21*4 - great for the bargraph
// set=TRUE; //default. Pixels are 'set' when written, so
// //turn on.
// set=FALSE; //all write functions now invert.
//The CLS will now set the screen white. Text characters print in black
//Then the second part of the driver is a 'window' driver. With this you can
//define a small graphic 'window', and draw things into this. This can then be
//rapidly copied to the display. So you could (for instance), plot a tiny graph,
//end then draw this on the display.
//The window must be a multiple of 8 pixels high, and can only be placed
//at a 'text' location, so you can't put it (say) 12 pixels down the screen,
//but only 8, 16, 24 etc..
//The size of the window determines how much RAM is used. So a 64*16 window
//uses 128 bytes of RAM (64*16/8).
//Neat thing is though, that you can draw an image on the window, put this on
//the screen, and then draw a second image, and put this somewhere else,
//without using any more memory. At the moment, I have only implemented two
//functions to draw to this window.
//If you don't want the graphic ability, if you #define TEXT_ONLY, then only
//the text mode driver will be loaded.
//With the graphic driver being used, the following extra functions are
//available:
// clear_window(); //clears all pixels 'black' (if set==TRUE), or white.
// set_pixel(x, y); //sets a pixel at x,y in the window.
// //x=0 to WINDOW_WIDTH-1 (left to right)
// //y=0 to WINDOW_HEIGHT-1 (top to bottom)
// line(x1, y1, x2, y2); //draws a line from x1,y1 to x2, y2
// rect(x1, y1, x2, y2); //draws a rectangle
// circle(x, y, radius, fill); //draws a circle
// //This draws a circle of radius 'radius' centred at x,y. If 'fill' is
// //true this is filled....
//
// draw_window(x, int8 y); //This draws the window onto the screen at
// //x=0 to 128, y=0 to 7.
//What you do is simply draw the shape you want into the window, and then
//this can be drawn onto the screen.
//I have not included font drawing, since this takes a lot more space....
//'set' again controls whether a pen, or eraser is used. So (for example), if you
//wanted a 'thick' circle, you could either draw several using the pen,
//without 'fill' enabled, or could draw one with fill, then change set to
//false, and draw a smaller one, to give a thick ring.
#define COMMAND_ONLY 0b00000000 //next byte is a command only
#define DATA_ONLY 0b01000000 //next byte is data
//directly from the data sheet - commands - not all used
#define S_EXTERNALVCC 0x1
#define S_SWITCHCAPVCC 0x2
#define S_SETLOWCOLUMN 0x00
#define S_SETHIGHCOLUMN 0x10
#define S_MEMORYMODE 0x20
#define S_COLUMNADDR 0x21
#define S_PAGEADDR 0x22
#define S_SETSTARTLINE 0x40
#define S_ROWADDRESS 0xB0
#define S_SETCONTRAST 0x81
#define S_CHARGEPUMP 0x8D
#define S_SEGREMAP 0xA0
#define S_DISPLAYALLON_RESUME 0xA4
#define S_DISPLAYALLON 0xA5
#define S_NORMALDISPLAY 0xA6
#define S_INVERTDISPLAY 0xA7
#define S_SETMULTIPLEX 0xA8
#define S_DISPLAYOFF 0xAE
#define S_DISPLAYON 0xAF
#define S_COMSCANINC 0xC0
#define S_COMSCANDEC 0xC8
#define S_SETDISPLAYOFFSET 0xD3
#define S_SETCOMPINS 0xDA
#define S_SETVCOMDETECT 0xDB
#define S_SETDISPLAYCLOCKDIV 0xD5
#define S_SETPRECHARGE 0xD9
#define DIV_RATIO 0x80 //recommended ratio
#define MULTIPLEX 0x3F //and multiplex
#define INT_VCC 0x14
ROM BYTE const Plogo[] =
{
0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1D, 0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x00, 0x03, 0xF8, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x7C, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0xFF, 0xFC,
0x00, 0x00, 0x00, 0x1E, 0x00, 0x0F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1E, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x1C,
0x00, 0x7F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x7F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x70, 0x00, 0x7F, 0xFF, 0xC0, 0x00, 0x00, 0x00, 0x78,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFC,
0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xFC,
0x00, 0x03, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00,
0x00, 0x3F, 0xC7, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x00, 0xFC, 0x00, 0x0E, 0x00, 0x10,
0x00, 0x7C, 0x00, 0x7C, 0x00, 0x0F, 0x00, 0x38, 0x00, 0x78, 0x00, 0x3E, 0x00, 0x0F, 0x80, 0x38,
0x00, 0x78, 0x00, 0x1E, 0x00, 0x0F, 0xC0, 0x1C, 0x00, 0xF0, 0x00, 0x1E, 0x00, 0x0F, 0xE0, 0x1C,
0x00, 0xF0, 0x00, 0x1E, 0x00, 0x0E, 0xF0, 0x1C, 0x00, 0x78, 0x00, 0x1E, 0x00, 0x0E, 0x7C, 0x1C,
0x00, 0x78, 0x00, 0x3E, 0x00, 0x0E, 0x3E, 0x7C, 0x00, 0x7C, 0x00, 0x7C, 0x00, 0x0E, 0x1F, 0xF8,
0x00, 0x7E, 0x00, 0xFC, 0x00, 0x0E, 0x0F, 0xF8, 0x00, 0x3F, 0xC7, 0xFC, 0x00, 0x0E, 0x03, 0xE0,
0x00, 0x3F, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFF, 0xF0, 0x00, 0x00, 0x00, 0x00,
0x00, 0x0F, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x07, 0xFC, 0x00, 0x0F, 0xFF, 0xFC, 0x00, 0x00, 0x3F, 0xFC, 0x00, 0x0F, 0xFF, 0xFC,
0x00, 0x00, 0xFF, 0xFC, 0x00, 0x0F, 0xFF, 0xFC, 0x00, 0x07, 0xFF, 0xE0, 0x00, 0x00, 0x0C, 0x0C,
0x00, 0x3F, 0xFF, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00, 0x7F, 0xF8, 0x00, 0x00, 0x00, 0x1C, 0x0C,
0x00, 0x7F, 0xC0, 0x00, 0x00, 0x00, 0x1E, 0x1C, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x3C,
0x00, 0x7F, 0xC0, 0x00, 0x00, 0x07, 0xFF, 0xFC, 0x00, 0x7F, 0xF8, 0x00, 0x00, 0x0F, 0xF7, 0xF8,
0x00, 0x1F, 0xFF, 0x00, 0x00, 0x0F, 0xC3, 0xF0, 0x00, 0x03, 0xFF, 0xE0, 0x00, 0x0C, 0x00, 0x00,
0x00, 0x00, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xFC, 0x00, 0x01, 0xFE, 0x00,
0x00, 0x00, 0x07, 0xFC, 0x00, 0x07, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x07, 0xFF, 0x80,
0x00, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0x3B, 0x80, 0x00, 0x00, 0x00, 0x04, 0x00, 0x0E, 0x39, 0xC0,
0x00, 0x00, 0xFE, 0x00, 0x00, 0x0E, 0x39, 0xC0, 0x00, 0x07, 0xFF, 0xC0, 0x00, 0x0E, 0x39, 0xC0,
0x00, 0x0F, 0xFF, 0xE0, 0x00, 0x0E, 0x3B, 0xC0, 0x00, 0x1F, 0xFF, 0xF0, 0x00, 0x0E, 0x3F, 0x80,
0x00, 0x3F, 0xFF, 0xF8, 0x00, 0x0E, 0x3F, 0x00, 0x00, 0x7F, 0x3C, 0xFC, 0x00, 0x04, 0x3E, 0x00,
0x00, 0x7C, 0x3C, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, 0x3C, 0x3E, 0x00, 0x00, 0x00, 0x00,
0x00, 0x78, 0x3C, 0x1E, 0x00, 0x0F, 0xFF, 0x80, 0x00, 0x78, 0x3C, 0x1E, 0x00, 0x0F, 0xFF, 0x80,
0x00, 0x70, 0x3C, 0x1E, 0x00, 0x0F, 0xFF, 0x80, 0x00, 0x70, 0x3C, 0x1E, 0x00, 0x00, 0x07, 0x80,
0x00, 0x70, 0x3C, 0x3E, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x78, 0x3C, 0x7C, 0x00, 0x00, 0x01, 0xC0,
0x00, 0x78, 0x3D, 0xFC, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x78, 0x3F, 0xF8, 0x00, 0x00, 0x0F, 0xC0,
0x00, 0x78, 0x3F, 0xF8, 0x00, 0x0F, 0xFF, 0x80, 0x00, 0x38, 0x3F, 0xE0, 0x00, 0x0F, 0xFF, 0x00,
0x00, 0x00, 0x3F, 0x80, 0x00, 0x0F, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x80,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xC0,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xC0, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x0F, 0xFF, 0xC0,
0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x0F, 0xFF, 0x80, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x0F, 0xFF, 0x00,
0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x00,
0x00, 0x00, 0x00, 0x3C, 0x00, 0x07, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0xCF, 0x80,
0x00, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0x03, 0xC0, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x0E, 0x01, 0xC0,
0x00, 0x1F, 0xFF, 0xFF, 0xE0, 0x0E, 0x01, 0xC0, 0x00, 0x3F, 0xFF, 0xFF, 0xF0, 0x0E, 0x01, 0xC0,
0x00, 0x7F, 0xFF, 0xFF, 0xF0, 0x0F, 0x03, 0xC0, 0x00, 0x7F, 0xFF, 0xFF, 0xF0, 0x07, 0xFF, 0x80,
0x00, 0x7C, 0x00, 0x3C, 0x00, 0x07, 0xFF, 0x80, 0x00, 0x78, 0x00, 0x3C, 0x00, 0x03, 0xFF, 0x00,
0x00, 0x78, 0x00, 0x3C, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x78, 0x00, 0x3C, 0x00, 0x00, 0x01, 0x80,
0x00, 0x78, 0x00, 0x3C, 0x00, 0x00, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xF0,
0x00, 0x00, 0x00, 0x04, 0x00, 0x07, 0xFF, 0xF8, 0x10, 0x00, 0x00, 0x3C, 0x00, 0x0F, 0xFF, 0xF8,
0xF0, 0x00, 0x00, 0xFC, 0x00, 0x0F, 0x01, 0x80, 0xF8, 0x00, 0x07, 0xFC, 0x00, 0x0E, 0x01, 0x80,
0xF8, 0x00, 0x1F, 0xFC, 0x00, 0x0E, 0x01, 0x80, 0xFC, 0x00, 0xFF, 0xFC, 0x00, 0x00, 0x00, 0x00,
0x7E, 0x03, 0xFF, 0xE0, 0x00, 0x01, 0xFC, 0x00, 0x3F, 0x9F, 0xFF, 0x80, 0x00, 0x03, 0xFF, 0x00,
0x1F, 0xFF, 0xFC, 0x00, 0x00, 0x07, 0xFF, 0x80, 0x0F, 0xFF, 0xE0, 0x00, 0x00, 0x0F, 0xBF, 0x80,
0x07, 0xFF, 0x00, 0x00, 0x00, 0x0F, 0x39, 0xC0, 0x01, 0xFF, 0xC0, 0x00, 0x00, 0x0E, 0x39, 0xC0,
0x00, 0x7F, 0xF8, 0x00, 0x00, 0x0E, 0x39, 0xC0, 0x00, 0x1F, 0xFF, 0x00, 0x00, 0x0E, 0x3B, 0xC0,
0x00, 0x03, 0xFF, 0xE0, 0x00, 0x0E, 0x3F, 0x80, 0x00, 0x00, 0xFF, 0xFC, 0x00, 0x0E, 0x3F, 0x80,
0x00, 0x00, 0x1F, 0xFC, 0x00, 0x06, 0x3F, 0x00, 0x00, 0x00, 0x07, 0xFC, 0x00, 0x00, 0x38, 0x00,
0x00, 0x00, 0x00, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00, 0x00
};
//Font 6*8 - slightly clearer than most fonts this size.
ROM BYTE font[] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Code for char
0x00, 0x00, 0xBE, 0x00, 0x00, 0x00, // Code for char !
0x00, 0x00, 0x03, 0x00, 0x03, 0x00, // Code for char "
0x50, 0xF8, 0x50, 0xF8, 0x50, 0x00, // Code for char #
0x48, 0x54, 0xFE, 0x54, 0x24, 0x00, // Code for char $
0x98, 0x58, 0x20, 0xD0, 0xC8, 0x00, // Code for char %
0x60, 0x9C, 0xAA, 0x44, 0x80, 0x00, // Code for char &
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, // Code for char '
0x00, 0x38, 0x44, 0x82, 0x00, 0x00, // Code for char (
0x00, 0x82, 0x44, 0x38, 0x00, 0x00, // Code for char )
0x02, 0x06, 0x03, 0x06, 0x02, 0x00, // Code for char *
0x10, 0x10, 0x7C, 0x10, 0x10, 0x00, // Code for char +
0xA0, 0x60, 0x00, 0x00, 0x00, 0x00, // Code for char ,
0x10, 0x10, 0x10, 0x10, 0x10, 0x00, // Code for char -
0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, // Code for char .
0x80, 0x40, 0x20, 0x10, 0x08, 0x00, // Code for char /
0x7C, 0xA2, 0x92, 0x8A, 0x7C, 0x00, // Code for char 0
0x00, 0x84, 0xFE, 0x80, 0x00, 0x00, // Code for char 1
0xC4, 0xA2, 0x92, 0x92, 0x8C, 0x00, // Code for char 2
0x44, 0x82, 0x92, 0x92, 0x6C, 0x00, // Code for char 3
0x18, 0x14, 0x12, 0xFE, 0x10, 0x00, // Code for char 4
0x9E, 0x92, 0x92, 0x92, 0x62, 0x00, // Code for char 5
0x7C, 0x92, 0x92, 0x92, 0x64, 0x00, // Code for char 6
0x06, 0x02, 0xE2, 0x12, 0x0E, 0x00, // Code for char 7
0x6C, 0x92, 0x92, 0x92, 0x6C, 0x00, // Code for char 8
0x4C, 0x92, 0x92, 0x92, 0x7C, 0x00, // Code for char 9
0xCC, 0xCC, 0x00, 0x00, 0x00, 0x00, // Code for char :
0xAC, 0x6C, 0x00, 0x00, 0x00, 0x00, // Code for char ;
0x00, 0x10, 0x28, 0x44, 0x82, 0x00, // Code for char <
0x48, 0x48, 0x48, 0x48, 0x48, 0x00, // Code for char =
0x00, 0x82, 0x44, 0x28, 0x10, 0x00, // Code for char >
0x04, 0x02, 0xB2, 0x12, 0x0C, 0x00, // Code for char ?
0x7C, 0x82, 0xBA, 0xAA, 0xBC, 0x00, // Code for char @
0xF8, 0x14, 0x12, 0x14, 0xF8, 0x00, // Code for char A
0xFE, 0x92, 0x92, 0x92, 0x6C, 0x00, // Code for char B
0x7C, 0x82, 0x82, 0x82, 0x44, 0x00, // Code for char C
0xFE, 0x82, 0x82, 0x44, 0x38, 0x00, // Code for char D
0xFE, 0x92, 0x92, 0x82, 0x82, 0x00, // Code for char E
0xFE, 0x12, 0x12, 0x02, 0x02, 0x00, // Code for char F
0x7C, 0x82, 0x92, 0x92, 0xF4, 0x00, // Code for char G
0xFE, 0x10, 0x10, 0x10, 0xFE, 0x00, // Code for char H
0x00, 0x82, 0xFE, 0x82, 0x00, 0x00, // Code for char I
0x60, 0x80, 0x80, 0x80, 0x7E, 0x00, // Code for char J
0xFE, 0x10, 0x18, 0x24, 0xC2, 0x00, // Code for char K
0xFE, 0x80, 0x80, 0x80, 0x80, 0x00, // Code for char L
0xFE, 0x04, 0x38, 0x04, 0xFE, 0x00, // Code for char M
0xFE, 0x04, 0x08, 0x10, 0xFE, 0x00, // Code for char N
0x7C, 0x82, 0x82, 0x82, 0x7C, 0x00, // Code for char O
0xFE, 0x12, 0x12, 0x12, 0x0C, 0x00, // Code for char P
0x7C, 0x82, 0xA2, 0xC2, 0xFC, 0x00, // Code for char Q
0xFE, 0x12, 0x12, 0x12, 0xEC, 0x00, // Code for char R
0x4C, 0x92, 0x92, 0x92, 0x64, 0x00, // Code for char S
0x02, 0x02, 0xFE, 0x02, 0x02, 0x00, // Code for char T
0x7E, 0x80, 0x80, 0x80, 0x7E, 0x00, // Code for char U
0x3E, 0x40, 0x80, 0x40, 0x3E, 0x00, // Code for char V
0xFE, 0x80, 0x70, 0x80, 0xFE, 0x00, // Code for char W
0xC6, 0x28, 0x10, 0x28, 0xC6, 0x00, // Code for char X
0x06, 0x08, 0xF0, 0x08, 0x06, 0x00, // Code for char Y
0xC2, 0xA2, 0x92, 0x8A, 0x86, 0x00, // Code for char Z
0x00, 0xFE, 0x82, 0x82, 0x00, 0x00, // Code for char [
0x08, 0x10, 0x20, 0x40, 0x80, 0x00, // Code for char BackSlash
0x00, 0x82, 0x82, 0xFE, 0x00, 0x00, // Code for char ]
0x00, 0x08, 0x04, 0x02, 0x04, 0x08, // Code for char ^
0x80, 0x80, 0x80, 0x80, 0x80, 0x00, // Code for char _
0x00, 0x00, 0x02, 0x04, 0x00, 0x00, // Code for char `
0x40, 0xA8, 0xA8, 0xA8, 0xF0, 0x00, // Code for char a
0xFE, 0x88, 0x88, 0x88, 0x70, 0x00, // Code for char b
0x70, 0x88, 0x88, 0x88, 0x10, 0x00, // Code for char c
0x70, 0x88, 0x88, 0x88, 0xFE, 0x00, // Code for char d
0x70, 0xA8, 0xA8, 0xA8, 0x30, 0x00, // Code for char e
0x10, 0xFC, 0x12, 0x12, 0x04, 0x00, // Code for char f
0x90, 0xA8, 0xA8, 0xA8, 0x70, 0x00, // Code for char g
0xFE, 0x10, 0x10, 0x10, 0xE0, 0x00, // Code for char h
0x00, 0x90, 0xF4, 0x80, 0x00, 0x00, // Code for char i
0x40, 0x80, 0x80, 0x90, 0x74, 0x00, // Code for char j
0xFE, 0x20, 0x50, 0x88, 0x00, 0x00, // Code for char k
0x7E, 0x80, 0x80, 0x00, 0x00, 0x00, // Code for char l
0xF8, 0x08, 0x70, 0x08, 0xF0, 0x00, // Code for char m
0xF8, 0x08, 0x08, 0x08, 0xF0, 0x00, // Code for char n
0x70, 0x88, 0x88, 0x88, 0x70, 0x00, // Code for char o
0xF8, 0x28, 0x28, 0x28, 0x10, 0x00, // Code for char p
0x10, 0x28, 0x28, 0xF8, 0x80, 0x00, // Code for char q
0xF8, 0x08, 0x08, 0x08, 0x10, 0x00, // Code for char r
0x90, 0xA8, 0xA8, 0xA8, 0x48, 0x00, // Code for char s
0x08, 0x08, 0xFE, 0x88, 0x88, 0x00, // Code for char t
0x78, 0x80, 0x80, 0x80, 0xF8, 0x00, // Code for char u
0x38, 0x40, 0x80, 0x40, 0x38, 0x00, // Code for char v
0xF8, 0x80, 0x70, 0x80, 0xF8, 0x00, // Code for char w
0x88, 0x50, 0x20, 0x50, 0x88, 0x00, // Code for char x
0x18, 0xA0, 0xA0, 0xA0, 0x78, 0x00, // Code for char y
0x88, 0xC8, 0xA8, 0x98, 0x88, 0x00, // Code for char z
0x00, 0x10, 0x6C, 0x82, 0x00, 0x00, // Code for char {
0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, // Code for char |
0x00, 0x82, 0x6C, 0x10, 0x00, 0x00, // Code for char }
0x00, 0x08, 0x04, 0x08, 0x10, 0x08, // Code for char ~
0x7C, 0x7C, 0x00, 0x00, 0x00, 0x00, // Code for char
//Characters 32 to 127
//The next eleven characters are above 127, and give the shapes used for
//the bar graph capability - remove if not needed
0x82, 0x82, 0x82, 0x82, 0x82, 0x82, //top and bottom bars only 128
0xFE, 0x82, 0x82, 0x82, 0x82, 0x82, //Open for bar 129
0xFE, 0xFE, 0x82, 0x82, 0x82, 0x82, //second bar
0xFE, 0xFE, 0xFE, 0x82, 0x82, 0x82,
0xFE, 0xFE, 0xFE, 0xFE, 0x82, 0x82,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0x82,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
//Full block for bar 134
0x82, 0x82, 0x82, 0x82, 0xFE, 0xFE, //final one cloing shape 135
0xFE, 0x82, 0x82, 0x82, 0xFE, 0xFE, //single left and double right
0xFE, 0xFE, 0x82, 0x82, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0x82, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE,
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE //New closing point for 0..100
//final one closing shape 140
};
//Character 140
// ACTION A REALISER POUR ENDORMIR LE SSD1306
ROM BYTE SLEEP_sequence[] =S_SETCONTRAST,
0x00,
S_DISPLAYOFF;
//ACTION POUR REVEILLER LE SSD1306
ROM BYTE WAKEUP_sequence[] =
S_DISPLAYON,
S_SETCONTRAST,
0xCF; // 0x00 to 0xFF
//ROTATE 180°
ROM BYTE ROTATE_180_sequence[] =
(S_SEGREMAP | 0x1),
S_COMSCANDEC;
//ROTATE 0°
ROM BYTE ROTATE_0_sequence[] =
S_SEGREMAP,
S_COMSCANINC; // flip Haut/bas
ROM BYTE init_sequence[] = S_DISPLAYOFF,
S_SETDISPLAYCLOCKDIV,
DIV_RATIO,
S_SETMULTIPLEX,
MULTIPLEX,
S_SETDISPLAYOFFSET,
0, // no offset
S_SETSTARTLINE,
S_CHARGEPUMP,
INT_VCC, // using internal VCC
S_MEMORYMODE, //Since byte is vertical writing column by column
0, // default horizontal addressing
(S_SEGREMAP | 0x1), // (S_SEGREMAP | 0x1), rotate screen 180
S_COMSCANDEC, // S_COMSCANDEC, S_COMSCANINC,
S_SETCOMPINS,
0x12,
S_SETCONTRAST,
0xEF, //experiment.... 0xCf for 1306
S_SETPRECHARGE,
0xF1,
S_SETVCOMDETECT,
0x40,
S_DISPLAYALLON_RESUME,
S_NORMALDISPLAY, //S_NORMALDISPLAY S_INVERTDISPLAY
S_DISPLAYON; //switch on OLED
//Initilalisation sequence
#define NORMAL 0
#define DOUBLE_HEIGHT 1
#define DOUBLE_WIDTH 2
#define LARGE DOUBLE_HEIGHT+DOUBLE_WIDTH
unsigned int8 O_current_col,O_current_row; //where text is currently 'working'
int8 size=NORMAL;
//Global flag for drawing mode
int1 set=TRUE; //allow funstions to set or reset - inverts drawing functions
#ifndef TEXT_ONLY
unsigned int8 window_buffer[WINDOW_WIDTH*WINDOW_HEIGHT/8];
//so with the example given, 128 bytes of RAM - much more practical on small chips!...
//This is the 'graphic window' buffer, so not needed for text only
#endif
void OLED_commands(rom unsigned int8 * commands, unsigned int8 number)
//send a multiple command, or commands to the display - number says how many
//from a ROM buffer
{
int8 ctr; //counter for the transmission
i2c_start ();
i2c_write (SSDADDR); //select the display
i2c_write (COMMAND_ONLY); //we are sending a command
for (ctr=0;ctr<number;ctr++)
{
I2c_write(commands[ctr]);
}
i2c_stop();
}
void OLED_data(unsigned int8 * data, unsigned int8 number)
//send 'number' bytes of data to display - from RAM
{
int8 ctr;
i2c_start ();
i2c_write (SSDADDR); //select the display
i2c_write (DATA_ONLY); //we are sending data(s)
for (ctr=0;ctr<number;ctr++)
i2c_write(data[ctr]); //send the byte(s)
i2c_stop ();
}
void OLED_address(unsigned int8 x, unsigned int8 y)
{
//routine to move the memory pointers to x,y.
//x is 0 to 127 (column), y (row) is 0 to 7 (page only)
#ifdef SH1106
x+=2;
#endif
i2c_start();
i2c_write(SSDADDR); //select the display
i2c_write(COMMAND_ONLY); //we are sending command(s)
i2c_write(S_ROWADDRESS | y); //select the display row
i2c_write(S_SETLOWCOLUMN | (x & 0x0F)); //low col address
i2c_write(S_SETHIGHCOLUMN | ((x>>4) & 0x0F)); //high col address
i2c_stop();
} //also made more efficient
void OLED_gotoxy(unsigned int8 x, unsigned int8 y)
{
//text x,y position bases on 8 lines/character and 6 columsn
//0 to 20 columns, 0 to 7 rows
if (x>(S_LCDWIDTH/6)-1) return;
if (y>(S_LCDHEIGHT/8)-1) return;
O_current_col=x; //efficient *6
O_current_row=y;
OLED_address((unsigned int16)x*4+(unsigned int16)x*2,y); //position display
}
void OLED_CLS(void)
{
unsigned int8 row, col;
//Just fill the memory with zeros
for (row=0;row<S_LCDHEIGHT/8;row++)
{
OLED_address(0,row); //take the addresses back to 0,0 0,1 etc..
i2c_start();
i2c_write(SSDADDR); //select the display
i2c_write(DATA_ONLY); //we are sending data(s)
for (col=0;col<S_LCDWIDTH;col++)
{
if (set)
i2c_write (0); //send 1024 zeros
else
i2c_write(255); //or the inverse
}
i2c_stop ();
}
OLED_gotoxy(0,0); //and text back to the top corner
}
//Macros to efficiently double bits from a nibble
#define DOUBLE_BIT(N, S, D) if (bit_test(S,N)) { bit_set(D,(N*2)); bit_set(D,(N*2)+1); }
#define DOUBLE_B_HIGH(N, S, D) if (bit_test(S,N+4)) { bit_set(D,(N*2)); bit_set(D,(N*2)+1); }
//Then send it with:
//Move a line from the ROM array into RAM
void invert(unsigned int8 * buffer, unsigned int8 number) //routine to invert
{//data when'set==FALSE'
do
{
*buffer^=0xFF;
buffer++;
} while(--number); //invert all the bits in the buffer
}
//Change here to allow multiple fonts
//This routine can be used by multiple output routines
void FONT_line(ROM unsigned int8 * font_data, int8 count)
{
//new function to transfer a line of data from the font table.
//designed to optimise the handling of double size fonts
//Sends one line of 'count' characters from the font to the display,
//with doubling of width if necessary. Maximum 12 chars.
unsigned int8 cols[24], ctr=0, width, inc_col, tchr, temp=0;
if (size & DOUBLE_WIDTH)
{
width=count*2;
inc_col=2;
}
else
{
width=count;
inc_col=1;
}
for (ctr=0;ctr<width;ctr+=inc_col) //for columns
{
cols[ctr]=0;
tchr=font_data[temp++]; //one byte of character from the font
if (size & DOUBLE_HEIGHT)
{
DOUBLE_BIT(0,tchr,cols[ctr])
DOUBLE_BIT(1,tchr,cols[ctr])
DOUBLE_BIT(2,tchr,cols[ctr])
DOUBLE_BIT(3,tchr,cols[ctr])
} //efficently double the bits from the low nibble
else
cols[ctr]=tchr;
if (size & DOUBLE_WIDTH)
cols[ctr+1]=cols[ctr]; //duplicate the byte
}
if (set==FALSE)
invert(cols,width);
OLED_data(cols,width);
//Now if doubling in height repeat usiong the other nibble
if (size & DOUBLE_HEIGHT)
{
temp=0; //back to the start of the font character
OLED_address((unsigned int16)O_current_col*4+O_current_col*2,O_current_row+1); //next row
for (ctr=0;ctr<width;ctr+=inc_col) //through the columns again
{
cols[ctr]=0;
tchr=font_data[temp++]; //one byte of character from the font
DOUBLE_B_HIGH(0,tchr,cols[ctr])
DOUBLE_B_HIGH(1,tchr,cols[ctr])
DOUBLE_B_HIGH(2,tchr,cols[ctr])
DOUBLE_B_HIGH(3,tchr,cols[ctr])
//efficently double the bits from the high nibble
if (size & DOUBLE_WIDTH)
cols[ctr+1]=cols[ctr]; //duplicate the byte if double_width
}
if (set==FALSE)
invert(cols,width);
//Now send the bytes for the second row
OLED_data(cols,width);
}
}
//Fastest text mode. No support for any control. Standard font only.
void OLED_text(unsigned int8 * text, unsigned int8 number)
{
unsigned int8 inc_col;
unsigned int16 temp;
//size allows double height & double width
//Here double height/width
//for this I have to do two transfers each of double the amount of data
//and reposition between each
if (size & DOUBLE_WIDTH)
{
inc_col=2;
}
else
{
inc_col=1;
}
do {
temp=(*text)-32;
if (temp>108)
temp=0; //block illegal characters
temp=((unsigned int16)temp*2)+((unsigned int16)temp*4); //efficient *6
FONT_line(&font[temp],6); //six characters from the font
//Now because I'll be in the wrong position (may be one line down)
//have to re-locate
O_current_col+=inc_col;
OLED_address((unsigned int16)O_current_col*4+O_current_col*2,O_current_row); //ready for next character
text++; //and select the next character
} while (--number); //and on to the next character
}
void OLED_putc(unsigned int8 chr)
{
//this is a putc wrapper for the text function - note much slower
//than sending the entire line directly
if (chr=='\f')
{
OLED_CLS(); //handle Clear screen (form feed)
return;
}
if (chr=='\r')
{
OLED_gotoxy(0,O_current_row); //carriage return
return;
}
if (chr=='\n')
{
if (size==NORMAL)
OLED_gotoxy(O_current_col,O_current_row+1);
else
OLED_gotoxy(O_current_col,O_current_row+2);
return;
}
OLED_text(&chr,1);
}
void OLED_textbar(unsigned int8 width)
{
//This draws a bar graph using text characters
int8 ctr;
unsigned int8 bar[9];
//graph is now 0 to 100.
//prints at current text location.
width/=2;
width+=2; //ensure >0 - g1ves 2 to 52
if (width>52)
width=52;
for (ctr=0;ctr<8;ctr++)
{
if (width>=6)
{
bar[ctr]=134; //full bar
width-=6;
}
else
{
bar[ctr]=128+width; //partial bars
width=0;
}
}
//now handle the right hand end of the bar
bar[8]=135+width;
OLED_text(bar,9);
}
//Now comes the 'exception' part to the driver
//Basic line & circle code writing to a small _window_ that can then
//be burst transmitted to the LED. Neat thing is that the same window
//can be used multiple times. So (for instance) you could write text on the
//left of the display, then have a 64*32 window. Draw something into this
//and display it at 64, 0 (text row) on the display, then draw something
//different (using the same window), and put this at 64, 4. The location
//the window is drawn has to be a byte boundary (so 0 to 7, for 0 to 63
//on the display.
//The sequence would be clear_window, line, circle etc.. Then draw_window(x,y)
//If you don't want to use the smace for this, then #define TEXT_ONLY at the start
//of the code
#ifndef TEXT_ONLY
void clear_window(void)
{
memset(window_buffer,(set)?0:255,WINDOW_WIDTH*WINDOW_HEIGHT/8); //clear the buffer
}
//Basic pixel routine
#inline
void set_pixel(unsigned int8 x, unsigned int8 y)
{
unsigned int16 locn; //This can be int8, if buffer is restricted to max 256 bytes
//potentially slightly faster. However 1616 is 'generic'.
if (x>=WINDOW_WIDTH) return;
if (y>=WINDOW_HEIGHT) return; //Limit check - ensures I do not try to write
//outside buffer boundaries
locn=((y/8)*WINDOW_WIDTH)+x; //location in buffer
//handle setting or resetting the pixel according to flag 'set'
if (set)
bit_set(window_buffer[locn],(y & 7)); //set the bit (to 1)
else
bit_clear(window_buffer[locn],(y & 7)); //set the bit (to 0)
}
//efficient line routine
void line(unsigned int8 x1, unsigned int8 y1, unsigned int8 x2, unsigned int8 y2)
{
unsigned int16 i;
int1 _plot;
signed int16 _dx,_dy;
unsigned int16 _ix,_iy,_inc,_plotx,_ploty,_x,_y;
//line from X1,Y1 to X2,Y2
//first the differences between the coordinate pairs
_dx=(signed int16) x2-x1;
_dy=(signed int16) y2-y1;
// ix & iy are the absolute increments required
_ix=(_dx<0)?(-_dx):_dx;
_iy=(_dy<0)?(-_dy):_dy;
// we must step the longest length (x or y)
_inc=(_ix>_iy)?_ix:_iy;
// make dx and dy the step required.
if (_dx>0) _dx=1; else if (_dx<0) _dx=-1;
if (_dy>0) _dy=1; else if (_dy<0) _dy=-1;
// actual plotting points
_plotx=x1;
_ploty=y1;
// start at 0
_x=0;
_y=0;
// set endpoint
set_pixel(_plotx,_ploty);
/* we implement Bressenhams algorithm for a line using integer steps
and only plotting the point when we get to a new co-ord pair */
for (i=0;i<=_inc;++i)
{
_x += _ix;
_y += _iy;
// do not plot yet
_plot=FALSE;
//if we are at a new pair - set the plot flag and increment
//the phsical plotting point
if (_x > _inc)
{
_plot = TRUE;
_x -= _inc;
_plotx += _dx;
}
if (_y > _inc)
{
_plot = TRUE;
_y -= _inc;
_ploty += _dy;
}
// now plot the point
if (_plot)
{
set_pixel(_plotx,_ploty); //this automatically handles set/reset
}
}
}
void rect(unsigned int8 x1, unsigned int8 y1, unsigned int8 x2, unsigned int8 y2)
{
//outline a rectangle
line(x1, y1, x2, y1); //Just draw four sides
line(x1, y2, x2, y2);
line(x1, y1, x1, y2);
line(x2, y1, x2, y2);
}
void circle(unsigned int8 x, unsigned int8 y, unsigned int8 radius, int1 fill)
{
signed int8 a, b, P;
a = 0;
b = radius;
P = 1 - radius;
do
{
if(fill)
{
line(x-a, y+b, x+a, y+b);
line(x-a, y-b, x+a, y-b);
line(x-b, y+a, x+b, y+a);
line(x-b, y-a, x+b, y-a); //inefficient but easy to code....
}
else
{
set_pixel(a+x, b+y);
set_pixel(b+x, a+y);
set_pixel(x-a, b+y);
set_pixel(x-b, a+y);
set_pixel(b+x, y-a);
set_pixel(a+x, y-b);
set_pixel(x-a, y-b);
set_pixel(x-b, y-a); //othewise draw the octant points
}
if(P < 0)
P += 3 + 2 * a++;
else
P += 5 + 2 * (a++ - b--);
} while(a <= b);
}
void draw_window(unsigned int8 x, unsigned int8 y)
{
unsigned int8 yctr;
unsigned int16 transfer=WINDOW_WIDTH;
//routine to copy the window to the display.
//x is in pixels, y in bytes (0 to 8). Uses burst transmission for each line
if ((x+transfer)>=S_LCDWIDTH)
{
//here the window would go off the edge of the screen...
transfer=(S_LCDWIDTH-1)-x;
}
for (yctr=0;yctr<(WINDOW_HEIGHT/8);yctr++)
{
if (y+yctr>7) return; //off the end of RAM
OLED_address(x,y+yctr); //position to the byte at the start of the line
//transfer the line
OLED_data(window_buffer+((unsigned int16)yctr*WINDOW_WIDTH),transfer);
//again int16 only needed here if buffer>256 bytes
}
}
#endif
//Add this to the driver if you want to use larger fonts.
//Now handling for big font modes
#define NUM_ONLY 0
#define NUM_PLUS 1
#define UC_ONLY 2
#define ALL_ALPHA 3 //defines for what character set is allowed
//This allows the same functions to be used with only partial fonts.
#define LETTC ':'
#define LETTF ';'
#define COPYWRITE '<'
#define DEGREE '='
#define SQUARED '>'
#DEFINE CUBED '?'//defines for extra symbols from the 'BIG_PLUS' font.
//New generic big font function
//New function to generate large characters from 12*16 fonts
//supporting double size/width on this
void OLED_Bigtext(unsigned int8 * text, ROM byte * font, int8 allowed)
{
unsigned int8 inc_col, inc_row;
unsigned int16 temp;
int8 row,col,firstcol;
char low, high;
//size allows double height & double width
//Here double height/width
//for this I have to do two transfers each of double the amount of data
//and reposition between each
if (size & DOUBLE_WIDTH)
inc_col=4;
else
inc_col=2;
if (size & DOUBLE_HEIGHT)
inc_row=2;
else
inc_row=1;
row=O_current_row;
firstcol=col=O_current_col; //start all text from this point
//Now low and high limits for text parsing
high = 0x7F; //default high limit
low = ' '; //default low limit
if (allowed==UC_ONLY)
high = 'Z'; //Limit to upper case
else if (allowed==NUM_PLUS)
high = '?'; //limit to six characters after numeris
else if (allowed==NUM_ONLY)
high = '9'; //just numeric
if (allowed==NUM_ONLY || allowed ==NUM_PLUS)
low='.'; //Move the lowest value up to decimal point
do //step through a 'string' buffer
{
//First check if a number
temp=(*text);
text++;
if (temp=='\0') //control characters EOS, and LF only
break; //exit
if (temp=='\n')
{
//implement crude line feed only
if (size==NORMAL)
{
row+=2;
OLED_gotoxy(firstcol,row);
col=firstcol;
}
else
{
row+=4;
OLED_gotoxy(firstcol,row);
col=firstcol;
}
continue; //and loop again
}
if (temp<' ')
continue;
if (temp>high)
continue; //upper limit
if (temp<low)
continue; //ignore below lower limit
temp-=low; //low also defines the start of the font table
//Now we need two rows from the font table
temp=((unsigned int16)temp*8)+((unsigned int16)temp*16); //efficient *24
FONT_line(&font[temp],12); //double sized font.
//Now feed to the new location for top row
//OLED_address((unsigned int16)col*4+col*2,row+inc_row);
OLED_gotoxy(col,row+inc_row);
FONT_line(&font[temp+12],12);
//Now because I'll be in the wrong position
//have to re-locate
col+=inc_col;
OLED_gotoxy(col,row);
//OLED_address((unsigned int16)col*4+col*2,row); //ready for next character
} while (TRUE); //and on to the next character
}
//============== ADDED TO DRAW A LOGO AT STARTUP FOR EXAMPLE =================
void get_line(ROM BYTE *array, BYTE * target)
{
int16 ctr;
for (ctr=0;ctr<128;ctr++)
*(target++) = array[ctr*8];
}
void draw_logo(void)
{
BYTE line[128];
signed int16 y;
//routine to write the logo
//Logo is in a 512 byte array, designed to occupy the second half of the screen
//each row on the screen is every eighth byte along the array
set=TRUE;
size=NORMAL;
OLED_cls();
for (y=7;y>=0;y--)
//for (y=0;y<=7;y++)
{
OLED_address(0,7-y); //position the display
get_line(&Plogo[y],line); //64 bytes
OLED_data(line,128);
}
}
//== END ======== ADDED TO DRAW A LOGO AT STARTUP FOR EXAMPLE =================
//New function to generate large numbers only using 'bignum' font, and
//supporting double size/width on this - macro expansion using above function
#IFNDEF BIG_PLUS //Switch to allow a few extra characters in the 'bignum' font
#define OLED_Bnum(x) OLED_bigtext(x, bignum, NUM_ONLY)
#ELSE
#define OLED_Bnum(x) OLED_bigtext(x, bignum, NUM_PLUS)
#ENDIF
//Similar expansion using 'large_font' for the whole standard char map
#define OLED_Btext(x) OLED_bigtext(x, courier, ALL_ALPHA)
|
_________________
CCS + ICD3 + PIC18F46K80 |
|
|
Manu59114
Joined: 22 Jan 2018
Posts: 34
Location: North of France
|
|
| Posted: Tue Jul 31, 2018 1:22 am |
|
|
Hello Ttelmah
Hello World!
Some news...
When i use this code with a PIC18 to draw a logo (1024 bytes array),
Everything is fine.
Same code on a dsPIC33.....
i have a black screen.
| Code: |
//============== ADDED TO DRAW A LOGO AT STARTUP FOR EXAMPLE =================
void get_line(ROM BYTE *array, BYTE * target)
{
int16 ctr;
for (ctr=0;ctr<128;ctr++)
{
*(target++) = array[ctr*8];
}
}
void draw_logo(void)
{
BYTE line[128];
signed int16 y;
//routine to write the logo
//Logo is in a 1024 byte array,
//each row on the screen is every eighth byte along the array
set=TRUE;
size=NORMAL;
OLED_cls();
//for (y=7;y>=0;y--)
for (y=0;y<=7;y++)
{
OLED_address(0,7-y); //position the display
get_line(&Plogo[y],line); //128 bytes
OLED_data(line,128);
}
}
//== END ======== ADDED TO DRAW A LOGO AT STARTUP FOR EXAMPLE =================
|
If i replace the value of this line:
| Code: | | OLED_data(line,128); |
with | Code: |
OLED_data(line,127); |
I can see my logo with the last vertical line missing!
....i have a headache..
any idea?
many thanks to all
Manu
_________________
CCS + ICD3 + PIC18F46K80 |
|
|
|
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