This is the documentation for the latest (main) development branch of HPM SDK. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

6.21. PDMA

6.21.1. Overview

The example shows PDMA scaling, rotation and Porter-Duff Alpha Blending function.

6.21.2. Board Setting

Connect LCD to LCD interface on board.

6.21.3. Build type

  • flash_sdram_xip

  • flash_sdram_xip_release

6.21.4. Running the example

When the example runs successfully, image changes can be observed on the LCD. The following message is displayed in the terminal:

> pdma example
> 2 rectangles will be drawn on the screen with alpha blending enabled