USB host on STM32L475 board with FATFS

[ZZY]

Hi! Hope everyone are doing well! I currently encounter a problem and can't solve it. I want to write some pieces of data into a file in a usb-disk and now the Appli_state is constantly idle even I connect the USB-Disk already.

This is a test demo code from main.c and set up for USB related port. Thanks so much for  your support!

 

[AScha.3]

Hi, just : what IS working here ?  

i just suggest: dont write, at first try to read (existing file) and proof, its working. 

write or format mkfs just could destroy the device... so dont do this. if mount - open- read - working fine, then you can do some write.

[ZZY]

Hi,

Question is that the state is always idle and can’t do the open, write things 

[AScha.3]

Question: can you read ? or read things ?