Go Down

Topic: SSD1306 display.clearDisplay() (Read 1 time) previous topic - next topic

MarkT

There is a sticky topic at the top of this sub-forum describing how to get help on this forum - please read it.

Particularly see the list in the section "6. Getting help on the forum"...
[ I won't respond to messages, use the forum please ]

TronSR

Save the bumf, just a polite yes or no chaps, that's all I wanted  ;)

guix

Can, you "clear" x by x pixels, not the entire display?


It is probably possible, see in the library you are using (since you don't want to tell us what you are using...) there is probably a function setPixelColor or something like that, use it in combination with setCursor and for loops and you have your own function ClearRectangle( x1, y1, x2, y2 ) ;)

TronSR

#8
Dec 13, 2012, 05:51 pm Last Edit: Dec 13, 2012, 05:54 pm by TronSR Reason: 1
This is the display I'm using..   ^_^ with a Mega2560
http://www.adafruit.com/blog/2012/11/16/controlling-an-adafruit-ssd1306-spi-oled-with-a-raspberry-pi-piday-raspberrypi-raspberry_pi/

And,

the code.

Code: [Select]
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_DC 48
#define OLED_CS 52
#define OLED_CLK 46
#define OLED_MOSI 44
#define OLED_RESET 50
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
#if (SSD1306_LCDHEIGHT != 32)
#endif
enum PinAssignments {
  encoderPinA = 20,
  encoderPinB = 21,
  zeroButton = 42
};
int encoderPos = 0;
int lastReportedPos = 0;
boolean A_set = false;
boolean B_set = false;
void setup() {
  pinMode(encoderPinA, INPUT);
  pinMode(encoderPinB, INPUT);
  pinMode(zeroButton, INPUT);
  digitalWrite(encoderPinA, HIGH);
  digitalWrite(encoderPinB, HIGH);
  digitalWrite(zeroButton, HIGH);
  attachInterrupt(2, doEncoderA, CHANGE);
  attachInterrupt(3, doEncoderB, CHANGE);
  display.begin(SSD1306_SWITCHCAPVCC);
  display.display();
  delay(1000);
}
void loop(){
  if (lastReportedPos != encoderPos) {
    lastReportedPos = encoderPos;
  }
  if (digitalRead(zeroButton) == LOW)  {
    encoderPos = 0;
  }
  display.display();
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.print("Linear");
  display.setCursor(0,16);
  display.print("Position");
  display.setCursor(0,40);
  display.setTextSize(3);
  display.print(encoderPos, DEC);
  display.setTextSize(2);
  display.setCursor(0,24);
  display.print("__________");
  display.setTextSize(2);
  display.setCursor(96,47);
  display.print("mm");
  display.setTextSize(2);
  display.setCursor(0,50);
  display.print("__________");
}
void doEncoderA(){
  A_set = digitalRead(encoderPinA) == HIGH;
  encoderPos += (A_set != B_set) ? +1 : -1;
}
void doEncoderB(){
  B_set = digitalRead(encoderPinB) == HIGH;
  encoderPos += (A_set == B_set) ? +1 : -1;
}


I would like
Code: [Select]
  display.display();
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.print("Linear");
  display.setCursor(0,16);
  display.print("Position");             
//
  display.setTextSize(2);
  display.setCursor(0,24);
  display.print("__________");
  display.setTextSize(2);
  display.setCursor(96,47);
  display.print("mm");
  display.setTextSize(2);
  display.setCursor(0,50);
  display.print("__________");


in the void setup()

and this part in void loop()
Code: [Select]
  display.setCursor(0,40);               
  display.setTextSize(3);           
  display.print("0");


The resin is the refresh on the OLED is a bit slow and I want it nice and fast, much like ruing the code like this
Code: [Select]
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_DC 48
#define OLED_CS 52
#define OLED_CLK 46
#define OLED_MOSI 44
#define OLED_RESET 50
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
#if (SSD1306_LCDHEIGHT != 32)
#endif

void setup() {
    display.begin(SSD1306_SWITCHCAPVCC);
  display.display();
}
void loop(){
  display.display();
  display.clearDisplay();
           
  display.setCursor(0,40);               
  display.setTextSize(3);           
  display.print("0");                     //encoderPos, DEC);


Thanks,

TronSR

This is the example code for the ssd1306.spi
Code: [Select]

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_DC 11
#define OLED_CS 12
#define OLED_CLK 10
#define OLED_MOSI 9
#define OLED_RESET 13
Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16
#define LOGO16_GLCD_WIDTH  16
static unsigned char PROGMEM logo16_glcd_bmp[] =
{ B00000000, B11000000,
 B00000001, B11000000,
 B00000001, B11000000,
 B00000011, B11100000,
 B11110011, B11100000,
 B11111110, B11111000,
 B01111110, B11111111,
 B00110011, B10011111,
 B00011111, B11111100,
 B00001101, B01110000,
 B00011011, B10100000,
 B00111111, B11100000,
 B00111111, B11110000,
 B01111100, B11110000,
 B01110000, B01110000,
 B00000000, B00110000 };

#if (SSD1306_LCDHEIGHT != 32)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif

void setup()   {                
 Serial.begin(9600);
 
 // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
 display.begin(SSD1306_SWITCHCAPVCC);
 // init done
 
 display.display(); // show splashscreen
 delay(2000);
 display.clearDisplay();   // clears the screen and buffer

 // draw a single pixel
 display.drawPixel(10, 10, WHITE);
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw many lines
 testdrawline();
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw rectangles
 testdrawrect();
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw multiple rectangles
 testfillrect();
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw mulitple circles
 testdrawcircle();
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw a white circle, 10 pixel radius
 display.fillCircle(display.width()/2, display.height()/2, 10, WHITE);
 display.display();
 delay(2000);
 display.clearDisplay();

 testdrawroundrect();
 delay(2000);
 display.clearDisplay();

 testfillroundrect();
 delay(2000);
 display.clearDisplay();

 testdrawtriangle();
 delay(2000);
 display.clearDisplay();
 
 testfilltriangle();
 delay(2000);
 display.clearDisplay();

 // draw the first ~12 characters in the font
 testdrawchar();
 display.display();
 delay(2000);
 display.clearDisplay();

 // draw scrolling text
 testscrolltext();
 delay(2000);
 display.clearDisplay();

 // text display tests
 display.setTextSize(1);
 display.setTextColor(WHITE);
 display.setCursor(0,0);
 display.println("Hello, world!");
 display.setTextColor(BLACK, WHITE); // 'inverted' text
 display.println(3.141592);
 display.setTextSize(2);
 display.setTextColor(WHITE);
 display.print("0x"); display.println(0xDEADBEEF, HEX);
 display.display();
 delay(2000);

 // miniature bitmap display
 display.clearDisplay();
 display.drawBitmap(30, 16,  logo16_glcd_bmp, 16, 16, 1);
 display.display();

 // invert the display
 display.invertDisplay(true);
 delay(1000);
 display.invertDisplay(false);
 delay(1000);

 // draw a bitmap icon and 'animate' movement
 testdrawbitmap(logo16_glcd_bmp, LOGO16_GLCD_HEIGHT, LOGO16_GLCD_WIDTH);
}


void loop() {
 
}


void testdrawbitmap(const uint8_t *bitmap, uint8_t w, uint8_t h) {
 uint8_t icons[NUMFLAKES][3];
 srandom(666);     // whatever seed

 // initialize
 for (uint8_t f=0; f< NUMFLAKES; f++) {
   icons[f][XPOS] = random() % display.width();
   icons[f][YPOS] = 0;
   icons[f][DELTAY] = random() % 5 + 1;
   
   Serial.print("x: ");
   Serial.print(icons[f][XPOS], DEC);
   Serial.print(" y: ");
   Serial.print(icons[f][YPOS], DEC);
   Serial.print(" dy: ");
   Serial.println(icons[f][DELTAY], DEC);
 }

 while (1) {
   // draw each icon
   for (uint8_t f=0; f< NUMFLAKES; f++) {
     display.drawBitmap(icons[f][XPOS], icons[f][YPOS], logo16_glcd_bmp, w, h, WHITE);
   }
   display.display();
   delay(200);
   
   // then erase it + move it
   for (uint8_t f=0; f< NUMFLAKES; f++) {
     display.drawBitmap(icons[f][XPOS], icons[f][YPOS],  logo16_glcd_bmp, w, h, BLACK);
     // move it
     icons[f][YPOS] += icons[f][DELTAY];
     // if its gone, reinit
     if (icons[f][YPOS] > display.height()) {
icons[f][XPOS] = random() % display.width();
icons[f][YPOS] = 0;
icons[f][DELTAY] = random() % 5 + 1;
     }
   }
  }
}


void testdrawchar(void) {
 display.setTextSize(1);
 display.setTextColor(WHITE);
 display.setCursor(0,0);

 for (uint8_t i=0; i < 168; i++) {
   if (i == '\n') continue;
   display.write(i);
   if ((i > 0) && (i % 21 == 0))
     display.println();
 }    
 display.display();
}

void testdrawcircle(void) {
 for (int16_t i=0; i<display.height(); i+=2) {
   display.drawCircle(display.width()/2, display.height()/2, i, WHITE);
   display.display();
 }
}

void testfillrect(void) {
 uint8_t color = 1;
 for (int16_t i=0; i<display.height()/2; i+=3) {
   // alternate colors
   display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2);
   display.display();
   color++;
 }
}

void testdrawtriangle(void) {
 for (int16_t i=0; i<min(display.width(),display.height())/2; i+=5) {
   display.drawTriangle(display.width()/2, display.height()/2-i,
                    display.width()/2-i, display.height()/2+i,
                    display.width()/2+i, display.height()/2+i, WHITE);
   display.display();
 }
}

void testfilltriangle(void) {
 uint8_t color = WHITE;
 for (int16_t i=min(display.width(),display.height())/2; i>0; i-=5) {
   display.fillTriangle(display.width()/2, display.height()/2-i,
                    display.width()/2-i, display.height()/2+i,
                    display.width()/2+i, display.height()/2+i, WHITE);
   if (color == WHITE) color = BLACK;
   else color = WHITE;
   display.display();
 }
}

void testdrawroundrect(void) {
 for (int16_t i=0; i<display.height()/2-2; i+=2) {
   display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, WHITE);
   display.display();
 }
}

void testfillroundrect(void) {
 uint8_t color = WHITE;
 for (int16_t i=0; i<display.height()/2-2; i+=2) {
   display.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, color);
   if (color == WHITE) color = BLACK;
   else color = WHITE;
   display.display();
 }
}
 
void testdrawrect(void) {
 for (int16_t i=0; i<display.height()/2; i+=2) {
   display.drawRect(i, i, display.width()-2*i, display.height()-2*i, WHITE);
   display.display();
 }
}

void testdrawline() {  
 for (int16_t i=0; i<display.width(); i+=4) {
   display.drawLine(0, 0, i, display.height()-1, WHITE);
   display.display();
 }
 for (int16_t i=0; i<display.height(); i+=4) {
   display.drawLine(0, 0, display.width()-1, i, WHITE);
   display.display();
 }
 delay(250);
 
 display.clearDisplay();
 for (int16_t i=0; i<display.width(); i+=4) {
   display.drawLine(0, display.height()-1, i, 0, WHITE);
   display.display();
 }
 for (int16_t i=display.height()-1; i>=0; i-=4) {
   display.drawLine(0, display.height()-1, display.width()-1, i, WHITE);
   display.display();
 }
 delay(250);
 
 display.clearDisplay();
 for (int16_t i=display.width()-1; i>=0; i-=4) {
   display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);
   display.display();
 }
 for (int16_t i=display.height()-1; i>=0; i-=4) {
   display.drawLine(display.width()-1, display.height()-1, 0, i, WHITE);
   display.display();
 }
 delay(250);

 display.clearDisplay();
 for (int16_t i=0; i<display.height(); i+=4) {
   display.drawLine(display.width()-1, 0, 0, i, WHITE);
   display.display();
 }
 for (int16_t i=0; i<display.width(); i+=4) {
   display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE);
   display.display();
 }
 delay(250);
}

void testscrolltext(void) {
 display.setTextSize(2);
 display.setTextColor(WHITE);
 display.setCursor(10,0);
 display.clearDisplay();
 display.println("scroll");
 display.display();

 display.startscrollright(0x00, 0x0F);
 delay(2000);
 display.stopscroll();
 delay(1000);
 display.startscrollleft(0x00, 0x0F);
 delay(2000);
 display.stopscroll();
 delay(1000);    
 display.startscrolldiagright(0x00, 0x07);
 delay(2000);
 display.startscrolldiagleft(0x00, 0x07);
 delay(2000);
 display.stopscroll();
}

Go Up