Accepting Data through UART

Divya Shree

Hi all,

I am using TDA2X for Face Recognition.

My plugin for FR is on DSP.

During training I have to accept the user name which I am thinking is to accept through UART since I have not directly connected any input device to board.

I am trying to use uartRead() function on DSP but facing issues, is there any other way or could you please guide me how can I use it.

over 6 years ago

0 Yordan Kamenov over 6 years ago

TI__Mastermind 42515 points

Hi Divya,

I have forwarded your question to a VisionSDK expert.

Regards,
Yordan

0 Stanislav Stilyanov over 6 years ago

TI__Genius 15120 points

Hi Divya,
I'm not a software expert, but can you please tell us more about your configuration?
For example:
Which UART do you use?
How is the pin mux configured?
How do you setup the UART? Code snippet would be helpful: open_uart() function, etc.
Baud rate/data bits/stop bits/etc.

0 Divya Shree over 6 years ago in reply to Stanislav Stilyanov

Prodigy 90 points

Hi Stanislav,

I am using teraterm its the same way as we do when we have to select the usecase.
I went through the code of chain_main_bios of visionSDK and found out that it uses this function uartRead() and tried to use same function.
the baud rate is 115200.
I dint write any function or code as in such until now just created a plugin and used this function but it gives error as undefined symbol during compilation.

Int8 ch[5];
uartRead(ch);
Vps_printf("ch=[%d]",ch);

this is the only code I have written.

0 Shiju Sivasankaran over 6 years ago in reply to Divya Shree

TI__Genius 13395 points

Hi Divya,

In VSDK bios we have configured UART with IPU1_0 (M4) core. So DSP will not get these UART inputs directly. I guess you have your UC on M4 and only

plugin for FR is on DSP. What you need to do this get the input from UART on M4 (allication context) and pass to DSP by using System_linkControl().

Also, please note that for Vision SDK oftware UART on DSP is not valiadted

regards, Shiju

0 Divya Shree over 6 years ago in reply to Shiju Sivasankaran

Prodigy 90 points

Hi Shiju,
As you have mentioned that it works on only IPU1_0 I created a plugin on IPU1_0 and had the same code but its still giving issues as undefined.
Do I need to include some other file ?

0 Divya Shree over 6 years ago in reply to Divya Shree

Prodigy 90 points

Hi Shiju,
I included Utils_Uart file and its working thanks for the info.

0 Yordan Kamenov over 6 years ago in reply to Divya Shree

TI__Mastermind 42515 points

Hi Divya,

thanks for sharing the solution. I will close the thread, but if you face any further issues you can write here and reopen it.

Regards,
Yordan

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Accepting Data through UART