Mixing sdcard and spi2.send fails

Try spi.send([c>>8,c]); :)

If a second argument is given to SPI.send, it's assumed to be a chip select pin. 0xf800 & 255 = 0 = A0 so it'll be turning A0 on and off when you're sending via SPI :)

Note that you could use it to your advantage:

    for(var i = 0; i < img.height; i++){
      bmp = E.toArrayBuffer(file.read(img.width + img.width));
      for(var j = 0; j < 32; j++){spi.send([c>>8,c],ce);}
    }