MicroPython Forum

The Hershey fonts are vector fonts so they are much slower to draw using the pure python driver. Bitmapped fonts are much quicker in python and even faster with the C driver. The https://github.com/russhughes/st7789_mpy repo has a firmware.bin I compiled using the MicroPython 1.12 source including t...

mondalex wrote: ↑

Tue Jan 16, 2018 6:47 pm

I want the microPython REPL prompt to show on the 128x64 glcd. How can I do that?

Check out: https://github.com/boochow/FBConsole

You can create a file system image with files and flash that to the device. https://penfold.owt.com/turtleplotbot/s ... vfat-image

I think I mostly understand your reply, and have downloaded your turtlebot-8m binary. Because I already have MicroPython on my board, I don't have to erase my flash first, right? I've reflashed my MicroPython versions this way before. From your instructions on penfold I'm also starting to get an id...

As far as I know, it's set in the micropython/ports/esp32/partitions.csv file. You can change the last value of the vfs line to 0x600000. Recompile MicroPython then erase and re-flash your device. # Name, Type, SubType, Offset, Size, Flags # Note: if you change the phy_init or app partition offset, ...

I wrote some code to use devbis' driver to write text using Hershey vector fonts. It's in my GitHub Repo. There is also a video of it running the demo using the Fast C version of devbis' driver.

I took Peter's suggestion and used his bytearray method and it's definitely faster. I haven't tried feezing the bytecode yet. Both methods are now in my GitHub repo. Here is a side by side video showing both methods.

Frozen bytecode of a raster font would be a better solution for most displays. My original use is in a slow moving robot plotter where ease of use was more important then speed. It's not really a practical solution for displays, still it's cute enough to show off and maybe it will be of use to someo...

Here is another way to go: https://github.com/russhughes/ttgo-hershey-fonts

This driver is not framebuf based so there is more work involved. One possibility is to use Peter Hinch's https://github.com/peterhinch/micropython-font-to-py program to create fonts and use his writer routine to write text to a buffer using the font. From there you could use blit_buffer to write th...