AM62x MCU+ SDK  10.01.00
DSS Colorbar Test

Introduction

This example tests the inbuilt colorbar generation of overlay manager of DSS. DSS has two overlay managers OVR1 and OVR2. Each overlay manager supports a simple internal color bar insertion in each display output path to enable testing of display output interface without using the frame buffer data from the memory.

The colors are: White, Yellow, Cyan, Green, Magenta, Red, Blue, Black. When internal colorbar is enabled, the overlay output data is replaced by the predefined ARGB48 color bar data .The example configures Video Port and Overlay managers using DSS driver IOCTLS. Since the colorbar is internal to DSS, there is no Video pipeline configuration required. The example configures Overlay Manager OVR1 to enable internal colorbar enable feature.

The example configures OLDI LVDS panel for Video Port 1. Please refer SK-LCD1 for panel details. The Video port timinng parameters are configured with respect to SK-LCD1. Timing parameters can be configured using sysconfig option.

The example integrates bootloading funtionality with SBL on OSPI bootmedia. It also integrates Device manager functionality. The SBL stage 2 thread boots all the cores along with HLOS like Linux. Refer SBL Booting Linux From OSPI for boot flow sequence.

Supported Combinations

Parameter Value
CPU + OS a53ss0-0 freertos
Toolchain arm.gnu.aarch64-none
Board am62x-sk, am62x-sk-lp, am62x-sip-sk
Example folder examples/drivers/dss/dss_colorbar_test

Steps to Run the Example

Attention
As the wake-up R5 is the device manager, it needs to be started by the SBL. So it can not be loaded through CCS. It should be flashed and booted through SBL.

See Also

DSS

Sample Output

DispApp_init() - DONE !!!
DSS colorbar application started...
Display create complete!!
Starting display ... !!!
Display in progress ... DO NOT HALT !!!
Display delete complete!!
DispApp_deInit() - DONE !!!
DSS colorbar test Passed!!

Display Output