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.
Parameter | Value |
---|---|
CPU + OS | wkup-r5fss0-0 freertos |
Toolchain | ti-arm-clang |
Board | am62px-sk |
Example folder | examples/drivers/dss/dss_colorbar_test |
${SDK_INSTALL_PATH}/tools/boot/sbl_prebuilt/am62px-sk/default_sbl_ospi_linux_hs_fs.cfg
# 2nd stage bootloader with DM is flashed at 0x80000 or to whatever offset your bootloader is configured for --file=../../examples/drivers/dss/dss_colorbar_test/am62px-sk/wkup-r5fss0-0_freertos/ti-arm-clang/dss_colorbar_test.release.appimage.hs_fs --operation=flash --flash-offset=0x80000
default_sbl_ospi_linux_hs_fs.cfg
shown above.C:/ti/mcu_plus_sdk
and this example and IPC application is built using makefiles, and Linux Appimage is already created, in Windows, cd C:/ti/mcu_plus_sdk/tools/boot python uart_uniflash.py -p COM13 --cfg=C:/ti/mcu_plus_sdk/tools/boot/sbl_prebuilt/am62px-sk/default_sbl_ospi_linux_hs_fs.cfg
~/ti/mcu_plus_sdk
cd ~/ti/mcu_plus_sdk python uart_uniflash.py -p /dev/ttyUSB0 --cfg=~/ti/mcu_plus_sdk/tools/boot/sbl_prebuilt/am62px-sk/default_sbl_ospi_linux_hs_fs.cfg
Display Output