A blessing for anyone who writes programs in Object Pascal on and for the Raspberry Pi. The strongest argument for using a single-board computer is direct access to hardware, which is no longer easily possible with x86-based computers.

To greatly simplify this access when programming with Lazarus, there is a great hardware abstraction layer from rudiratlos on GitHub:

rpi_hal

As usual, integration is done via uses. To do this, rpi_hal.pas and optionally pfio.pas must be located in the project folder:

uses
  RPi_HAL, PFIO;

uses
  RPi_HAL, PFIO;

Among other things, I have successfully used this HAL in the Macintosh SE digital picture frame project. There is no easier way to use the GPIOs with Pascal!

Der Beitrag Lazarus with hardware access on the Raspberry Pi – rpi_hal erschien zuerst auf flohs blog.