TDA2EVM5777: how to read some data file from SD card for VISION_SDK?

Lingcon

Expert 1450 points

Part Number: TDA2EVM5777

Dear,

Because some data is big,I want to read the data when algorithm needs these data,

How to read data from SD？

for example： file = fopen(path,mode)

how to write the path parameters of fopen?

BRS,

Meng

over 8 years ago

0 Yordan Kamenov over 8 years ago

TI__Mastermind 42515 points

Hi Meng,

if you use Linux version of the VisionSDK there is "NullSrc -> Decode -> Display" example usecase
that uses "NullSrc" link to read file (NullSrc can be used to read from file or network).

Regards,
Yordan

0 Lingcon over 8 years ago in reply to Yordan Kamenov

Expert 1450 points

Hi Yordan,

Thank you for your reply.

if the vision SDK uses sysbios system, the file can be read in the same way as linux OS?

BRS,
Meng

0 Yordan Kamenov over 8 years ago in reply to Lingcon

TI__Mastermind 42515 points

Hi Meng,

I think it is possible, but I will ping an VisionSDK expert for details.

Regards,
Yordan

0 Prasad Jondhale over 8 years ago in reply to Lingcon

TI__Mastermind 27743 points

Hello Meng,

Yes, same use-case is available on the VSDK sysbios. (examples/tda2xx/src/usecases/network_rx_tx)

Note that current sysbios Null Src + decode + display use case uses Network (Ethernet) for receiving data, you would need to change it to receive from SD.

You can refer to chains_nullSrcDisplay_SetNullSrcPrms function in VSDK linux use-case for SD related config params and modify in sysbios use-case.

0 Lingcon over 8 years ago in reply to Prasad Jondhale

Expert 1450 points

Hi Prasad,

Thank you very much.

I shall try it according to what you mentioned.

BRS,
Meng

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TDA2EVM5777: how to read some data file from SD card for VISION_SDK?