MicroPython Forum (Archive)

LVGL is a major achievement enabling lovely GUI design. Their design criteria could hardly be more different from mine. I aim to write small, portable code in pure MicroPython which runs on official firmware. The tradeoff is a limited set of simple widgets. I completely understand that, and having ...

An update from today, I spent some time looking tat c code to see if I could get some speed increases. I will start off by saying I know nothing about c and so will almost certainly have made it less efficient than possible. I strongly based it (forked and modified) from a driver for an st7789 displ...

it's designed for use with an external frame buffer: as discussed this isn't practicable with these larger displays. I see the problems that you (and @rdagger) are up against. As a quick side note, there is the option os the esp32 WROVER module or something like the tiny pico which have 4MiB extern...

Having done some more work today and looking through documentation it looks like you can only send data in rectangular sections by providing x1, x2, y1, y2. Therefore i tdont see a way of sending over data that isnt in a rectanglular format, unless the ram is read first and then over writtenfor a se...

I have been doing some work and have managed a solid rectangle to display in ~45ms which is plenty fast enough realistically. the isue is when ots of instructions must be sent, a very stark example of this is a 45 dgreeline vs a horizontal line, a 100 pixel horizontal line is being sent in one instr...

It is interesting to hear that you are looking into support for ili9341 but am beggining to understan the difficulties involved. I also understand what you mean about addiung touch support, I see a lot of displays with them, especially ili9341 ones, alhough for the project I am working on I don't ne...

Thank you for your detailed response, I had indeed seen your GUI before and it looked perfect if not for the display drivers. I have done some investigation and timed some functions, it looks like the limitation is potentially to do with how the data is being sent, not making use of the frame buffer...

Thank you for the feedback, In the code I was using the baud rate was set to 40,000,000, above what you have mentioned, I have tried both lowering to 10,000,000 and increasing to 400,000,000 with no change in performance. As an extreme I set the baud rate much lower and that did indeed slow down the...

Hello everyone, I am working on a project using an ili9341 display connected to a firebeetle esp32 board and am looking for a good ili9341 driver. I have been using the driver here (https://github.com/rdagger/micropython-ili9341) and the screen is working but incredibly slow, on the order of seconds...

Sorry for the delay, I didnt see that I had a notification, I have managed to get it working with your help so thank you very much