<![CDATA[M5StickC: Cannot write BMP/JPG/RAW to the lcd from memory]]>Hi. I'm using the last version of firmware (1.6.0), and there is so many differences between it and micropython code samples from 2018-2019. I wanna print the image, loaded from my local server. I wanna write raw bmp array right to the screen like here: https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/blob/fede6f610c9952c7242fc309c2bb4efc9afb0919/MicroPython_BUILD/components/micropython/esp32/modules/ssd1306.py

There are any solutions for writing, except for pixel-by-pixel?)

]]>https://community.m5stack.com/topic/2145/m5stickc-cannot-write-bmp-jpg-raw-to-the-lcd-from-memoryRSS for NodeTue, 28 Apr 2026 23:55:47 GMTWed, 22 Jul 2020 00:28:25 GMT60<![CDATA[Reply to M5StickC: Cannot write BMP/JPG/RAW to the lcd from memory on Wed, 22 Jul 2020 08:14:31 GMT]]>@reganel You could save the image to a file and load it back to the display, but with frequent writing to the flash memory, you will damage it very quickly. I tried to load a bitmap into a variable and draw from it pixel by pixel on the screen, but esp does not have enough ram memory (for a 24 bit 80x160 bitmap some 38kB). From what I've seen, the C libraries for arduino allow you to write an image from a buffer. The only thing I was able to get is reading a jpg image through mqtt (size about 10kB), saving to a file and from a file to the screen. But as mentioned before, flash memory has a limited number of write cycles.

]]>https://community.m5stack.com/post/9399https://community.m5stack.com/post/9399Wed, 22 Jul 2020 08:14:31 GMT<![CDATA[Reply to M5StickC: Cannot write BMP/JPG/RAW to the lcd from memory on Wed, 22 Jul 2020 04:29:22 GMT]]>@reganel Images have to be formatted and saved in a very specific way to be used. this is a limitation of Micropython.
The exact specifications required are written down in several post o this forum. please use the search function to find those requirements.

]]>https://community.m5stack.com/post/9398https://community.m5stack.com/post/9398Wed, 22 Jul 2020 04:29:22 GMT