How to transfer 2M Bytes of data via USB-VCP of STM32F429 MCU?

[Er.Anil]

I need to transfer 2 M Bytes of data via USB virtual com port of STM32F429 microcontroller, withing 2-4 seconds.

I am using the USB standard libraries available on ST website. I have successfully transfered small strings, But when it comes to the large data.

[TDK]

> I have successfully transfered small strings, But when it comes to the large data.

So why can't you transfer long strings? I should be functionally the same as small string, except you'll need to buffer and wait for the previous transfer to complete before sending more.

[Er.Anil]

Thank you for replying

Can you tell me which function can be used to check whether precious transfer is complete.

I am using "STM32F USB Drivers & Liberary". So is there any library that contains such a function to check a flag for data transfer complete?

[TDK]

Please don't make duplicate posts.

Duplicate:

https://community.st.com/s/question/0D73W000000o8sf/detail?s1oid=00Db0000000YtG6&s1nid=0DB0X000000DYbd&emkind=chatterCommentNotification&s1uid=0050X000007vmts&emtm=1625028790149&fromEmail=1&s1ext=0