New version

New version of library, compatible with esp-idf (after cleanup) can be find here:

https://github.com/chegewara/esp32-usb-v2

Description

Library allows to build USB class devices and to make it usable with minimal effort:

CDC, communication device class,
MSC, mass storage class,
HID, human interface device class: keyboard, mouse, gamepad, generic IN/OUT,
MIDI, musical instrument digital interface class,
DFU, device firmware update class,
WebUSB, its using vendor class to show webusb usage.

Hardware

To use native USB we need to connect pins 19 and 20 to usb cable or with similar connectors:

How to

Library allows to set all values in standard USB device like:

manufacturer
product name
serial number
revision
VID and PID

ANYusb device;  // any USB class like HID, MSC, CDC
device.manufacturer(char*);
device.product(char*); // product name
device.serial(char*);  // serial number SN
device.revision(uint16_t); // product revison
device.deviceID(uint16_t VID, uint16_t PID);
device.deviceID(uint16_t* VID, uint16_t* PID);

Default EP numbers

In case of using more than 1 USB class in 1 device please make sure there is no conflict between EP numbers and eventuallu use setBaseEP:

CDC - EP1 and EP2,
HID - keyboard - EP2, mouse - EP3,
MSC - EP4,
WebUSB - EP4,
MIDI - EP5
DFU - not required

Contributions

Issues and PRs are welcome.

USB host (WIP)

I have some basic implementation of USB host which i decided to add. This is still experimental version as i dont know what tpe of design to implement (events or callbacks).

Here is log from MSC host reading files from pendrive:

[   960][I][test.ino:86] client_event_callback(): device speed: USB_SPEED_FULL, device address: 1, max ep_ctrl size: 64, config: 1
EP num: 1/2, len: 32, address: 0x81, EP max size: 64, dir: IN
EP num: 2/2, len: 32, address: 0x02, EP max size: 64, dir: OUT
capacity_cb: block_size: 512, block_count: 60948479
inquiry_cb
[  1038][I][test.ino:221] write_test(): File written
[  1049][I][test.ino:149] read_test(): /msc/README.txt
[  1051][I][test.ino:159] read_test(): Hello World!
[  1055][I][test.ino:205] read_test(): Found file : /msc/fanet_module.pdf (735686 bytes)
[  1056][I][test.ino:205] read_test(): Found file : /msc/06639_datasheet.pdf (205240 bytes)
[  1063][I][test.ino:205] read_test(): Found file : /msc/Bluetooth_5-FINAL.pdf (2100903 bytes)
[  1072][I][test.ino:205] read_test(): Found file : /msc/USB-Basics-USB-2.0-.pdf (113669 bytes)
[  1080][I][test.ino:205] read_test(): Found file : /msc/DS_SX1280-1_V2.2.book.pdf (197260 bytes)
[  1096][I][test.ino:205] read_test(): Found file : /msc/USB-Basics-USB-2.0- (1).pdf (113669 bytes)
[  1102][I][test.ino:205] read_test(): Found file : /msc/USB---Enumeration-States.pdf (29098 bytes)
[  1110][I][test.ino:205] read_test(): Found file : /msc/USB---Protocol---bits4device.pdf (1022853 bytes)
[  1125][I][test.ino:205] read_test(): Found file : /msc/esp32-s2_technical_reference_manual_en.pdf (6769251 bytes)
[  1132][I][test.ino:205] read_test(): Found file : /msc/cd00167594-stm32-microcontroller-system-memory-boot-mode-stmicroelectronics.pdf (4613315 bytes)
[  1146][I][test.ino:205] read_test(): Found file : /msc/USB Complete The Developer's Guide 4th Ed.pdf (6936935 bytes)
[  1161][I][test.ino:205] read_test(): Found file : /msc/USB Mass Storage Designing and Programming Devices and Embedded Hosts.pdf (3360734 bytes)
[  1173][I][test.ino:205] read_test(): Found file : /msc/README.txt (13 bytes)
[  1181][I][test.ino:233] write_test(): Renaming file
[  1212][I][test.ino:240] write_test(): Reading file
[  1225][I][test.ino:254] write_test(): Read from file /msc/README1.txt: 'Hello World!'
[  1233][E][test.ino:145] read_test(): Failed to open file
[  1237][I][test.ino:205] read_test(): Found file : /msc/fanet_module.pdf (735686 bytes)
[  1238][I][test.ino:205] read_test(): Found file : /msc/06639_datasheet.pdf (205240 bytes)
[  1245][I][test.ino:205] read_test(): Found file : /msc/Bluetooth_5-FINAL.pdf (2100903 bytes)
[  1253][I][test.ino:205] read_test(): Found file : /msc/USB-Basics-USB-2.0-.pdf (113669 bytes)
[  1262][I][test.ino:205] read_test(): Found file : /msc/DS_SX1280-1_V2.2.book.pdf (197260 bytes)
[  1278][I][test.ino:205] read_test(): Found file : /msc/USB-Basics-USB-2.0- (1).pdf (113669 bytes)
[  1284][I][test.ino:205] read_test(): Found file : /msc/USB---Enumeration-States.pdf (29098 bytes)
[  1292][I][test.ino:205] read_test(): Found file : /msc/USB---Protocol---bits4device.pdf (1022853 bytes)
[  1307][I][test.ino:205] read_test(): Found file : /msc/esp32-s2_technical_reference_manual_en.pdf (6769251 bytes)
[  1314][I][test.ino:205] read_test(): Found file : /msc/cd00167594-stm32-microcontroller-system-memory-boot-mode-stmicroelectronics.pdf (4613315 bytes)
[  1327][I][test.ino:205] read_test(): Found file : /msc/USB Complete The Developer's Guide 4th Ed.pdf (6936935 bytes)
[  1342][I][test.ino:205] read_test(): Found file : /msc/USB Mass Storage Designing and Programming Devices and Embedded Hosts.pdf (3360734 bytes)
[  1352][I][test.ino:205] read_test(): Found file : /msc/README1.txt (13 bytes)
[  1352][I][test.ino:289] setup(): storage used: 26329088/31189319680