TDA2P-ACD: Issue when Integrating LCD display

Dipti Natu

Intellectual 700 points

Part Number: TDA2P-ACD

Hello,

We want to integrate two LCD display connected to Vout1 and Vout2 ports respectively.

Initially we were able to see output on LCD1 connect to Vout1 using following setting in chains_common.c :

pVInfo->vencId = SYSTEM_DCTRL_DSS_VENC_LCD1;

pVInfo->outputPort = SYSTEM_DCTRL_DSS_DPI1_OUTPUT;

Note : Other settings for overlay parameters and venc were also done.

But when I tried to replicate similar settings for LCD2 which is connected to Vout2 :

pVInfo->vencId = SYSTEM_DCTRL_DSS_VENC_LCD2;

pVInfo->outputPort = SYSTEM_DCTRL_DSS_DPI2_OUTPUT;

Note : Other settings for overlay parameters and venc were also done.

It does not work. No output can be seen on display.

Let me know the steps to be done to enable Vout2.

After some investigation I found that Pinmux for Vout2 pins is set to Vin2a as default value as per information in datasheet. Do I need to change this Pinmux ?

Let me know if I am missing something.

Thanks,

Dipti

over 5 years ago

0 Brijesh Jadav over 5 years ago

TI__Guru**** 502025 points

Yes, definitely, you have to set the pinmux for vout2 datalines, control signals and clock. Without it, you would not see output from vout2.

Regards,

Brijesh

0 Dipti Natu over 5 years ago in reply to Brijesh Jadav

Intellectual 700 points

Hello Brijesh,

Thank you for the prompt response.

In order to change the pinmux setting, can I change it directly in the following file

ti_components\drivers\pdk_01_10_04_05\packages\ti\drv\vps\src\boards\src\bsp_boardTda2xx.c

Or the better way is to overwrite it in our application ?

Thanks,

Dipti

+1 Brijesh Jadav over 5 years ago in reply to Dipti Natu

TI__Guru**** 502025 points

Dipti,

Both are ok. you could modify board file or override pinmux in the application, assuming you are not using vin2a input.

Regards,

Brijesh

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TDA2P-ACD: Issue when Integrating LCD display