oled-exp draw image format?

Reply to oled-exp draw image format? on Sat, 13 Feb 2016 02:03:44 GMT

Sebastian Utbult — Sat, 13 Feb 2016 02:03:44 GMT

I've been googling (and trying to study the code for putting an image on the OLED screen, and I can't for the life of me figure out

what the .LCD format is
how I can convert an image to that format and put it in a project for later loading

Here's what I've tried so far:

Put a jpeg and bmp file (128x64px) on the omega, and running oled-exp draw file.jpg etc
Saving the file as a C array using https://sourceforge.net/projects/lcd-image-converter and loading that

Can't find anything useful on the community, or the documentation, or in code (am I stupid or is this information not readily available?). How do i convert images to a format that oled-exp can use?

Reply to oled-exp draw image format? on Sat, 13 Feb 2016 02:12:59 GMT

Sebastian Utbult — Sat, 13 Feb 2016 02:12:59 GMT

Well, partial success: I can grab the converted files from /tmp when uploaded via the oled app. But that seems kind of like a chore.

Reply to oled-exp draw image format? on Mon, 15 Feb 2016 04:06:58 GMT

Malcolm White — Mon, 15 Feb 2016 04:06:58 GMT

If you take a look at the github source of the i2c-exp-driver, there is a subdirectory called bmp2lcd. In there is the javascript on how to create the image (looks like a simple packed binary stream).