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esp-idf/examples/peripherals/usb/host/msc
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Darian Leung b6dfadb168 usb: Update USB Host Library 
This commit updates the USB Host Library as follows:

- usb_helpers.h
    - Removed dependency on USB Host Library API
    - Added function to print string descriptors
- usbh
    - Fixed bug where an interface/endpoint could be claimed/allocated multiple times
    - Removed redundant device ref_count change
- Added unit test for USB Host Library API usage
2022-01-06 15:14:10 +08:00
..
components/msc usb: Update USB Host Library 2022-01-06 15:14:10 +08:00
main usb: USB Host stack uses USB PHY driver 2022-01-06 15:09:39 +08:00
CMakeLists.txt USB: added MSC Host Driver with VFS support 2021-12-20 12:39:45 +01:00
README.md USB: added MSC Host Driver with VFS support 2021-12-20 12:39:45 +01:00

README.md

Supported Targets ESP32-S2 ESP32-S3

USB Mass Storage Class example

Overview

This example demonstrates usage of Mass Storage Class to get access to storage on USB memory stick. Example caries out read and write file operations, as USB storage is mounted to Virtual filesystem.

Hardware Required

  • Development board with USB capable ESP SoC (ESP32-S2/ESP32-S3)
  • A USB cable for Power supply and programming
  • A USB memory stick

Common Pin Assignments

If your board doesn't have a USB A connector connected to the dedicated GPIOs, you may have to DIY a cable and connect D+ and D- to the pins listed below.

ESP BOARD    USB CONNECTOR (type A)
                   --
                  | || VCC
[GPIO19]  ------> | || D-
[GPIO20]  ------> | || D+
                  | || GND
                   --

Build and Flash

Build the project and flash it to the board, then run monitor tool to view serial output:

idf.py -p PORT flash monitor

(To exit the serial monitor, type Ctrl-].)

See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.

Example Output

...
I (274) cpu_start: Starting scheduler on PRO CPU.
I (339) APP: Waiting for USB stick to be connected
Device info:
         PID: 0x5678 
         VID: 0xFFFF 
         iProduct: Disk 2.0 
         iManufacturer: USB 
         iSerialNumber: 92072836B2589224378 
I (719) APP: Writing file
I (749) APP: Reading file
I (749) APP: Read from file: 'Hello World!'
I (759) APP: Done