Sending large amount of data with USB

[MAndr.233]

I'm currently facing a big problem. I've an MCU (STM32L4) connected to an SD card (SDIO) which stores tons of data (5Gb) from a microphone (ST MEMS). I need to send this data as fast as possible from SD card to my PC. With a serial port this is to slow, since the max baud rate of my MCU is 115kb/s.

How can I solve this? I'm thinking about using an FTDI module but for what I'm reading the speed is always limited by MCU baud rate. Best Regards

[waclawek.jan]

You did not tell us exactly which STM32 you use, but generally, on 'L4, there's only Full Speed USB.

JW

[TDK]

There are example programs in the CubeMX repository. Here are a few of them:

https://github.com/STMicroelectronics/STM32CubeL4/tree/master/Projects/32L496GDISCOVERY/Applications/USB_Device

JW makes a good points below about USB speed limitations.