Creating a #PinePhone Terminal App with #LVGL and Apache #NuttX RTOS ... All shall be explained in this article

Article: https://lupyuen.github.io/articles/terminal?1

Inside our #PinePhone Terminal for #LVGL and Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/terminal?2#lvgl-terminal-for-nuttx

Let's start the #NuttX NSH Shell ... And send it a command via a NuttX Pipe

Article: https://lupyuen.github.io/articles/terminal?3#pipe-a-command-to-nsh-shell

Here's how we create a POSIX Pipe in Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/terminal?4#create-the-pipes

Standard I/O Streams will be inherited ... When we create a #NuttX Task

Article: https://lupyuen.github.io/articles/terminal?5#connect-the-pipes

Here's how we create a Task in Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/terminal?6#create-the-task

Checking our #NuttX plumbing by Piping a Command to NSH Shell

Article: https://lupyuen.github.io/articles/terminal?7#test-the-pipes

Reading stdout from #NuttX NSH Shell will block ... If there's nothing to read! That's why we poll() for stdout

Article: https://lupyuen.github.io/articles/terminal?7#test-the-pipes

How we poll an I/O Stream in Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/terminal?8#poll-for-nsh-output

Our #NuttX Terminal App needs to poll periodically for NSH Output ... Let's do this with an #LVGL Timer

Article: https://lupyuen.github.io/articles/terminal?9#timer-for-lvgl-terminal

#LVGL Widgets are Not Thread Safe ... So it's probably easier to do polling in our #NuttX Terminal App

Article: https://lupyuen.github.io/articles/terminal?9#timer-for-lvgl-terminal

Here's how we render the #LVGL Widgets in our #NuttX Terminal App for #PinePhone

Article: https://lupyuen.github.io/articles/terminal?10#render-terminal-with-lvgl-widgets

In our #LVGL Terminal App for #PinePhone, we render 3 LVGL Widgets: Keyboard Widget and 2 Text Area Widgets

Article: https://lupyuen.github.io/articles/terminal?10#render-terminal-with-lvgl-widgets

The #LVGL Widgets in our #PinePhone Terminal App are a little messy ... We'll clean them up with LVGL Flex Layout

Article: https://lupyuen.github.io/articles/terminal?10#render-terminal-with-lvgl-widgets

Our #PinePhone Terminal App for #NuttX looks neater ... After cleaning up with #LVGL Flex Layout

Article: https://lupyuen.github.io/articles/terminal?10#render-terminal-with-lvgl-widgets

#NuttX Terminal App for #PinePhone looks better with a Monospaced Font ... But #LVGL Keyboard needs a Proportional Font

Article: https://lupyuen.github.io/articles/terminal?11#set-terminal-font-to-monospace

Here's how we handle input from #LVGL Touchscreen Keyboard ... In our #PinePhone Terminal App for Apache #NuttX RTOS

Article: https://lupyuen.github.io/articles/terminal?12#handle-input-from-lvgl-keyboard