Input could be usb keyboard, otherwise the lvgl terminal app with its lvgl 
keyboard works. Output only mode for this I think.

> On 17 Feb 2025, at 21:25, Tomek CEDRO <to...@cedro.info> wrote:
> 
> Yes that would be a nice feature also for testing the LCD and should
> be easy to implement for output only mode when no input is required
> :-) Input would require serial port like transport, keyboard, or
> on-screen keyboard that makes things a bit more complicated :-)
> Tomek
> 
>> On Mon, Feb 17, 2025 at 8:11 PM Tim Hardisty <timhardist...@gmail.com> wrote:
>> 
>> Just thinking out loud...
>> 
>> Would NuttX benefit from a FrameBuffer stdout driver (e.g. /dev/fbcon)
>> that allowed a pipe/dup to replace stdout, or the use of
>> CONFIG_NSH_ALTSTDOUT and/or CONFIG_ALTSTDERR for console output?
>> 
>> In my case, this is just for MCUboot messages in the case of bootloader
>> issues; to let the user know what's going on and, perhaps, guide the
>> user through recovery procedures. The LCD is the only display available,
>> as a serial console is not available to the user for this embedded
>> device. But could be a generally useful thing?
>> 
>>> On 16/02/2025 10:45, Alan C. Assis wrote:
>>> 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
>>>>>> 
>>>>>> 
> 
> 
> 
> --
> CeDeROM, SQ7MHZ, http://www.tomek.cedro.info

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