How to store a text file in STM32F4 using USB Mass Storage Class and FATFS?

[ADevg.1]

I'm not able to create txt file, what issue , can you provide source code? please help me.

[KDJEM.1]

Hello @ADevg.1​ and welcome to the Community :),

I recommend you to get started with the example provided here STM32CubeF4/Projects/STM32469I-Discovery/Applications/USB_Host/MSC_Standalone.

This example can help you to use the USB host application based on the Mass Storage Class (MSC) on the STM32F4xx devices and to write a small text file (less to 1 KB) on the USB flash disk.

Also, I advise you to take a look at this wiki.

I hope this help you!

Kaouthar

[ADevg.1]

Using Flash memory to create text file , is it possible ? without use any external USB or SD card. .

[Tesla DeLorean]

Yes, it's just a collection of bytes​.

The larger 128KB Flash blocks are a bit awkward to manage.​

[ADevg.1]

I'm allocate 128KB Flash block size, but file not created and unable to complete the format. https://github.com/ankitdevganiya13/STM32_USB_MSC_FATFS/tree/master

[ADevg.1]

Any reply ?

[Haithem Rahmani]

Hi @ADevg.1​ 

IIRC, you are configuring the STM32 as an USB storage device and want to write data using the windows machine on the internal flash of the STM32?

is this correct?

[KDJEM.1]

Hello @ADevg.1​ ,

Could you please check these posts:

• How to store a file in pendrive as pdf in STM32 using Mass Storage Class and FATFS?
• problem mapping NAND flash to PC through USB_MSC (st.com)

I hope this helps!

Kaouthar