Thareeq Anwar k
Created January 31, 2021 © CC BY-NC

Christmas Tree with Ada and microbit

A decorative christmas tree made with ada and microbit.

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Christmas Tree with Ada and microbit

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ADA
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--  This simple example shows a scrolling text on the micro:bit LED matrix.
--
--  It is intended as first project to get familiar with Ada and GNAT
--  Programing Studio on the micro:bit.
--
--  For more advanced micro:bit features please have a look at the
--  Ada_Drivers_Library project: https://github.com/AdaCore/Ada_Drivers_Library
--
--  The micro:bit has a 5 x 5 multiplexed LED matrix, this means only one LED
--  can be lit at a time. To overcome this limitation, the LEDs are lit one
--  after the other very quickly. This process, called scanning, happens so fast
--  that the human eyes sees all the LED lit together (persistence of vision).
--  In this example, the scan is done with a periodic Timing_Event. Timing_Event
--  is an Ada standard feature that allows you to have a callback executed at a
--  give point in time and can be used to create periodic timers. The periodic
--  timers are implemented in the Generic_Timer package.
--
--  The LED matrix initialization and text scrolling are implemented in the
--  Display package.
--
--  The hardware maping for the GPIOs has been generated from a SVD description
--  file using SVD2Ada: https://github.com/AdaCore/svd2ada

with Display;

procedure Main is
begin

   loop
      Display.Scroll_Text ("Happy Christmas");
   end loop;
end Main;

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Thareeq Anwar k

Thareeq Anwar k

4 projects • 2 followers

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