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Open source editor for bitmap images
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pkolt/bitmap_editor
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✨ Open source editor forbitmap images.
👍 Will help you create pictures for librariesU8g2 andAdafruit SSD1306.
If you are using libraryAdafruit SSD1306:
#include<Wire.h>#include<Adafruit_GFX.h>#include<Adafruit_SSD1306.h>#defineSCREEN_WIDTH128// OLED display width, in pixels#defineSCREEN_HEIGHT64// OLED display height, in pixels#defineOLED_RESET -1// Reset pin # (or -1 if sharing Arduino reset pin)#defineSCREEN_ADDRESS0x3C///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32Adafruit_SSD1306display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);#defineBITMAP_WIDTH16#defineBITMAP_HEIGHT16staticconstunsignedchar PROGMEM bitmap[] = {0b00000001,0b00000000,0b00000011,0b10000000,0b00101001,0b00101000,0b00010001,0b00010000,0b00101001,0b00101000,0b00000101,0b01000000,0b01000011,0b10000100,0b11111111,0b11111110,0b01000011,0b10000100,0b00000101,0b01000000,0b00101001,0b00101000,0b00010001,0b00010000,0b00101001,0b00101000,0b00000011,0b10000000,0b00000001,0b00000000,0b00000000,0b00000000 };voidsetup() { Serial.begin(9600);// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internallyif (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) { Serial.println(F("SSD1306 allocation failed"));for (;;) ;// Don't proceed, loop forever } display.clearDisplay(); display.drawBitmap(0,0, bitmap, BITMAP_WIDTH, BITMAP_HEIGHT, SSD1306_WHITE); display.display();}voidloop() {}
If you are using libraryU8g2:
#include<Arduino.h>#include<U8g2lib.h>#include<Wire.h>U8G2_SSD1306_128X64_NONAME_F_HW_I2Cu8g2(U8G2_R0,/* reset=*/U8X8_PIN_NONE);#defineBITMAP_WIDTH16#defineBITMAP_HEIGHT16staticconstunsignedchar PROGMEM bitmap[] = {0b10000000,0b00000000,0b11000000,0b00000001,0b10010100,0b00010100,0b10001000,0b00001000,0b10010100,0b00010100,0b10100000,0b00000010,0b11000010,0b00100001,0b11111111,0b01111111,0b11000010,0b00100001,0b10100000,0b00000010,0b10010100,0b00010100,0b10001000,0b00001000,0b10010100,0b00010100,0b11000000,0b00000001,0b10000000,0b00000000,0b00000000,0b00000000 };voidsetup(void) {pinMode(9, OUTPUT);digitalWrite(9,0);// default output in I2C mode for the SSD1306 test shield: set the i2c adr to 0if (!u8g2.begin()) { Serial.println(F("SSD1306 allocation failed"));for (;;) ;// Don't proceed, loop forever }; u8g2.clearDisplay(); u8g2.drawXBMP(0,0, BITMAP_WIDTH, BITMAP_HEIGHT, bitmap); u8g2.sendBuffer();}voidloop(void) {}
npm cinpm start
For some LCD displays such as the SSD1306, the image width must be a multiple of 8. If this requirement is not met, you will see a wrong image when displayed.
Just use an image width that is a multiple of 8.
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Open source editor for bitmap images