TDA4VM: how to configure to output video from HDMI?

Hi,

Are you using infotainment daughter board? HDMI is supported via infotainment daughter board only.

Regards,

Brijesh

I am using the SK-TDA4 board.and without infotainment daughter board.when I flash the edge_ai_sd_card.img ,it can output on the HDMI interface,but when I build rtos SDK(ti-processor-sdk-rtos-j721e-evm-08_00_01_10) ,It only output on the DP interface. I think that it may need to don some configuring or modification in *.h files. hope your intruduction.

Hello,

HDMI is one of the few things that are different between EVM and SK board. Instead of the interface being on the MCU for the EVM, the SK board controls HDMI from the HLOS on A72.

When building RTOS SDK, did you build using following option:

BUILD_EDGEAI=yes make sdk -j8

This build flag is documented in the EdgeAI SDK documentation but not in the PSDK RTOS documentation: http://software-dl.ti.com/jacinto7/esd/processor-sdk-linux-sk-tda4vm/08_00_01_10/exports/docs/development_flow.html#building-the-sdk-from-source

Regards,

Takuma

I built it usingBUILD_EDGEAI=no make sdk -j8, beacause I  modified the draw box kernel and will modify the driver of the camera later.

is there some methods to display on the hdmi interface? if I just run an simple app which show a image on the A72, HDMI interface will output? 

Hello,

HDMI should automatically work if it is set up correctly. When the board is powered on, there should be an image of the SK board that shows up on the screen like the one below. Note that the SK board is connected to DP in the image, but the same image should come up on HDMI also.

Could you try to build with the build flag BUILD_EDGEAI=yes?

Regards,

Takuma