STM32F103 / As a ‘USB Host’, I would like to save a ‘txt’ file on USB.

[myksj1105]

[Current Status]
1. MCU: STM32F103CB
2. CORE1: https://github.com/rogerclarkmelbourne/Arduino_STM32
3. CORE2: https://github.com/stm32duino/Arduino_Core_STM32

[What I want to do]
1. As a ‘USB Host’, I would like to save a ‘txt’ file on USB.
- I want to read and write.
2. I want to do it through ‘STM32F103CB’.
3. I want to perform it through 'core1' or 'core2'.
4. I am curious about how to structure the circuit diagram.