#include<Wire.h>

#include<OneBitDisplay.h>

#include<AnimatedGIF.h>

// Compile the GIF file animation into FLASH with the code

#include"spiral_72x40.h"

ONE_BIT_DISPLAY obd;

AnimatedGIF gif;

staticuint8_t*pBuffer;// holds current frame for OLED

#defineDISPLAY_WIDTH72

#defineDISPLAY_HEIGHT40

#ifdefARDUINO_ARCH_MBED

#defineSDA_PIN22

#defineSCL_PIN23

externMbedI2C *pWire;

#else

externTwoWire *pWire;

#defineSDA_PIN5

#defineSCL_PIN6

#endif

voidDrawPixel(intx,inty,uint8_tucColor)

{

uint8_tucMask;

intindex;

if(x >= DISPLAY_WIDTH || y >= DISPLAY_HEIGHT)

return;

ucMask =1<<(y &7);

index = x +((y >>3)* DISPLAY_WIDTH);

if(ucColor)

pBuffer[index] |= ucMask;// set the pixel (white)

else

pBuffer[index] &= ~ucMask;// clear the pixel (black)

}

//

// Called once per scanline as the GIF is decoded

//

voidGIFDraw(GIFDRAW*pDraw)

{

uint8_t*s;

intx, y, iWidth;

staticuint8_tucPalette[256];// thresholded palette

if(pDraw->y==0)// first line, convert palette to 0/1

{

for(x =0; x <256; x++)

{

uint16_tusColor =pDraw->pPalette[x];

intgray =(usColor & 0xf800)>>8;// red

gray +=((usColor & 0x7e0)>>2);// plus green*2

gray +=((usColor & 0x1f)<<3);// plus blue

ucPalette[x] =(gray >>9);// 0->511 = 0, 512->1023 = 1

}

}

y =pDraw->iY+pDraw->y;// current line

iWidth =pDraw->iWidth;

if(iWidth > DISPLAY_WIDTH)

iWidth = DISPLAY_WIDTH;

s =pDraw->pPixels;

if(pDraw->ucDisposalMethod==2)// restore to background color

{

for(x=0; x<iWidth; x++)

{

if(s[x] ==pDraw->ucTransparent)

s[x] =pDraw->ucBackground;

}

pDraw->ucHasTransparency=0;

}

// Apply the new pixels to the main image

if(pDraw->ucHasTransparency)// if transparency used

{

uint8_tc, ucTransparent =pDraw->ucTransparent;

intx;

for(x=0; x < iWidth; x++)

{

c = *s++;

if(c != ucTransparent)

DrawPixel(pDraw->iX+ x, y,ucPalette[c]);

}

}

else

{

s =pDraw->pPixels;

// Translate the 8-bit pixels through the RGB565 palette (already byte reversed)

for(x=0; x<pDraw->iWidth; x++)

DrawPixel(pDraw->iX+ x, y,ucPalette[*s++]);

}

if(pDraw->y==pDraw->iHeight-1)// last line, render it to the display

obd.display();

}/* GIFDraw() */

voidsetup(){

obd.setI2CPins(SDA_PIN, SCL_PIN);

obd.I2Cbegin(OLED_72x40);

obd.allocBuffer();

pBuffer =(uint8_t*)obd.getBuffer();

obd.fillScreen(0);

obd.setFont(FONT_8x8);

//obd.setContrast(40);

obd.print("GIF Demo");

obd.display();

delay(2000);

gif.begin(LITTLE_ENDIAN_PIXELS);

}/* setup() */

voidloop(){

// Loop continuously over the animated sequence

if(gif.open((uint8_t*)spiral_72x40, sizeof(spiral_72x40), GIFDraw))// play the GIF from FLASH storage

{

//    Serial.printf("Successfully opened GIF; Canvas size = %d x %d\n", gif.getCanvasWidth(), gif.getCanvasHeight());

while(gif.playFrame(false,NULL))

{

}

gif.close();

}

}/* loop() */