[ISSUE 104] - Solves issues with SD card images #105
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… make debugging easier, and rectify some issues with opening images. (Also added jpeg to the image filter for usability)
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Using the default presto setup that came with the device, I cleared out the local gallery folder to put my own images in.
I then just decided to put them on an SD card. I encountered errors where the images wouldn't display (initially due to .jpeg file extension) and then other issues opening the files.
This seemed to be due to the SPI bus getting into a bad state and j.open_file not liking the SD card. The fix was to read the image into memory first and use j.open_RAM instead.