Hi Tim, I think there is not a framebuffer text in place for NuttX, but you can use the code to handle text fonts from nx graphics to render the text directly in the framebuffer.
For Linux some years ago I used fbtext https://sourceforge.net/projects/fbtext/ to print a message from initrd to let user know a secret key the decript the disk. Alternatively if you want to print images in the screen you can use something like fbprint ( https://github.com/Weinsen/fbprint ). BR, Alan On Saturday, February 15, 2025, Tim Hardisty <timhardist...@gmail.com> wrote: > What is efficient solution to just do text though? > > > On 15 Feb 2025, at 13:42, Alan C. Assis <acas...@gmail.com> wrote: > > > > Hi Tim, > > > > You can create a NuttX application with LVGL and display your message or > > image. > > > > Actually you don't need to use a graphic library if you just want to > write > > in the framebuffer, you can convert image to display directly in the > > /dev/fb0 > > > > BR, > > > > Alan > > > >> On Sat, Feb 15, 2025 at 7:45 AM Tim Hardisty <timhardist...@gmail.com> > >> wrote: > >> > >> Hello NuttX Colleagues! > >> > >> During MCUboot I want to display text messages on the framebuffer LCD > >> driver (/dev/fb). This could either be via a FB console (useful for > >> other reasons) or a FB terminal, or something else. > >> > >> I also quite like the idea of my main graphics app - LVGL based - having > >> a console option (for syslog messages, perhaps), so perhaps LVGL is an > >> option, but I'm wanting to keep the size down of course. > >> > >> Which of the NuttX armoury of features might be a good choice for this? > >> > >> Thanks! > >> > >> TimJTi > >> > >> >
