I2C_oled_1306_easySetResolution.ino

// MODIFIED Small Simple OLED library demo
// betlog - 2019-07-16--23-09-43
// drawpixel DOES require #define USE_BACKBUFFER to be set at start of ../libraries/ss_oled/src/ss_oled.cpp
// https://github.com/bitbank2/ss_oled
// https://github.com/bitbank2/BitBang_I2C
// 72x40, 96x16, 64x32, 128x32, 128x64 and 132x64 (SH1106) display sizes
//
//--- user specified ---
int X=128;
int Y=32;
//------------
#include <ss_oled.h>
void setup() {
    int rc;
    if (X == 72) {
        rc = oledInit(OLED_72x40, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
    } else if (X == 96) {
        rc = oledInit(OLED_96x16, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
    } else if (X == 64) {
        rc = oledInit(OLED_64x32, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
    } else if (X == 128) {
        if (Y == 32) {
            rc = oledInit(OLED_128x32, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
        } else if (Y == 64) {
            rc = oledInit(OLED_128x64, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
        } else if (X == 132) {
            rc = oledInit(OLED_132x64, 0, 0, -1, -1,400000L); // use standard I2C bus at 400Khz
        }
    }
    if (rc != OLED_NOT_FOUND)
    {
        char *msgs[] = {"SSD1306 @ 0x3C", "SSD1306 @ 0x3D","SH1106 @ 0x3C","SH1106 @ 0x3D"};
        oledFill(0);
        oledWriteString(0,0,msgs[rc], FONT_NORMAL, 0);
        delay(2000);
    }
    Serial.begin(115200);
}

void loop() {

int i, x, y, j, rot, max;

    oledFill(0);
    rot=360;
    j;
    for (j=0;j<rot; j++){
        x=map(j,0,360,0,X);
        y=map(sin(j*DEG_TO_RAD)*10, -10, 10, Y*10, 0);
        y/=10.0;
        Serial.print("x: " );
        Serial.print(x);
        Serial.print("y: " );
        Serial.println(y);
        oledSetPixel(x, y, 1);
    }
    delay(3000);

    oledFill(0);
    rot=1800;
    for (j=0;j<rot; j++){
        x=map(j,0,1800,0,X);
        y=map(sin(j*DEG_TO_RAD)*10, -10, 10, Y*10, 0);
        y/=10.0;
        Serial.print("x: " );
        Serial.print(x);
        Serial.print("y: " );
        Serial.println(y);
        oledSetPixel(x, y, 1);
    }
    delay(3000);








  oledFill(0x0);
  oledWriteString(0,0,(char *)"normal-1234567890abcdef", FONT_NORMAL, 0);
  oledWriteString(0,1,(char *)"normal-1234567890abcdef", FONT_NORMAL, 0);
  oledWriteString(0,2,(char *)"normal-1234567890abcdef", FONT_NORMAL, 0);
  oledWriteString(0,3,(char *)"normal-1234567890abcdef", FONT_NORMAL, 0);
  delay(2000);

  oledFill(0x0);
  oledWriteString(0,0,(char *)"normal-1234567890abcdef", FONT_NORMAL, 1);
  oledWriteString(0,1,(char *)"normal-1234567890abcdef", FONT_NORMAL, 1);
  oledWriteString(0,2,(char *)"normal-1234567890abcdef", FONT_NORMAL, 1);
  oledWriteString(0,3,(char *)"normal-1234567890abcdef", FONT_NORMAL, 1);
  delay(2000);


  oledFill(0x0);
  oledWriteString(0,0,(char *)"small-1234567890abcdef", FONT_SMALL, 0);
  oledWriteString(0,1,(char *)"small-1234567890abcdef", FONT_SMALL, 0);
  oledWriteString(0,2,(char *)"small-1234567890abcdef", FONT_SMALL, 0);
  oledWriteString(0,3,(char *)"small-1234567890abcdef", FONT_SMALL, 0);
  delay(2000);

  oledFill(0x0);
  oledWriteString(0,0,(char *)"small-1234567890abcdef", FONT_SMALL, 1);
  oledWriteString(0,1,(char *)"small-1234567890abcdef", FONT_SMALL, 1);
  oledWriteString(0,2,(char *)"small-1234567890abcdef", FONT_SMALL, 1);
  oledWriteString(0,3,(char *)"small-1234567890abcdef", FONT_SMALL, 1);
  delay(2000);

//   oledFill(0x0);
//   oledWriteString(0,0,(char *)"large-1234567890abcdef", FONT_LARGE, 0);
//   oledWriteString(0,1,(char *)"large-1234567890abcdef", FONT_LARGE, 0);
//   oledWriteString(0,2,(char *)"large-1234567890abcdef", FONT_LARGE, 0);
//   oledWriteString(0,3,(char *)"large-1234567890abcdef", FONT_LARGE, 0);
//   delay(2000);
//
//   oledFill(0x0);
//   oledWriteString(0,0,(char *)"large-1234567890abcdef", FONT_LARGE, 1);
//   oledWriteString(0,1,(char *)"large-1234567890abcdef", FONT_LARGE, 1);
//   oledWriteString(0,2,(char *)"large-1234567890abcdef", FONT_LARGE, 1);
//   oledWriteString(0,3,(char *)"large-1234567890abcdef", FONT_LARGE, 1);
//   delay(2000);


  oledFill(0x0);
  oledWriteString(0,0,(char *)"fill", FONT_NORMAL, 0);
  delay(1000);
  oledFill(0);
  y=0;
  x=0;
  max=X*Y;
  for (i=0; i<max; i++) {
    x+=1;
    if (x>=X) {
        y+=1;
        x=0;
    }
    if (y>=Y) {
        y=0;
    }
    oledSetPixel(x, y, 1);
//     delay(5);
  }
  delay(3000);



  oledFill(0x0);
  oledWriteString(0,0,(char *)"fill", FONT_NORMAL, 0);
  delay(1000);
  oledFill(0);
  y=0;
  x=0;
  max=X*Y;
  for (i=0; i<max; i++) {
    y+=1;
    if (y>=Y) {
        x+=1;
        y=0;
    }
    if (x>=X) {
        x=0;
    }
    oledSetPixel(x, y, 1);
//     delay(5);
  }
  delay(3000);



  oledFill(0x0);
  oledWriteString(0,0,(char *)"random", FONT_SMALL, 0);
  delay(1000);
  oledFill(0);
  for (i=0; i<250; i++) {
    x = random(X);
    y = random(Y);
    oledSetPixel(x, y, 1);
    delay(50);
    oledSetPixel(x, y, 0);

  }

  oledFill(0x0);
  oledWriteString(0,0,(char *)"fastrandom", FONT_SMALL, 0);
  delay(1000);
  oledFill(0);
  for (i=0; i<5000; i++) {
    x = random(X);
    y = random(Y);
    oledSetPixel(x, y, 1);
    oledSetPixel(x, y, 0);
  }

//
// By default, the line drawing function is disabled on AVR since it requires a backing buffer (1K RAM)
// Which is usually a large % on most of the AVRs (Arduino UNO only has 2K RAM total)
// To enable this functionality, define USE_BACKBUFFER at the beginning of ss_oled.cpp
//
#ifndef __AVR__
  oledFill(0);
  for (x=0; x<X-1; x+=2)
  {
    oledDrawLine(x, 0, X-1-x, Y-1);
  }
  for (y=0; y<Y-1; y+=2)
  {
    oledDrawLine(X-1,y, 0,Y-1-y);
  }
  delay(2000);
#endif // !__AVR__
} /* main() */