Keyboard and mouse firmware from hackers for hackers with <3

Schematics DevKit M1

Technical Reference DevKit M1

If you accidentally programmed the UART pins use the following key combination to enter the flash mode via USB:

• Hold down the BOOT button
• Press and release the RST button
• Release the BOOT button

Then flash.

Human interface devices (HID) are one of the most common USB devices, it is implemented in various devices such as keyboards, mice, game controllers, sensors and alphanumeric display devices. In this example, we implement USB keyboard and mouse. Upon connection to USB host (PC), the example application will sent 'key a/A pressed & released' events and move mouse in a square trajectory. To send these HID reports again, press the BOOT button, that is present on most ESP development boards (GPIO0).

As a USB stack, a TinyUSB component is used.

Any ESP board that have USB-OTG supported.

Note: In case your board doesn't have micro-USB connector connected to USB-OTG peripheral, you may have to DIY a cable and connect D+ and D- to the pins listed below.

See common pin assignments for USB Device examples from upper level.

Boot signal (GPIO0) is used to send HID reports to USB host.

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

idf.py -p PORT flash monitor

(Replace PORT with the name of the serial port to use.)

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

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

After the flashing you should see the output at idf monitor:

I (290) cpu_start: Starting scheduler on PRO CPU.
I (0) cpu_start: Starting scheduler on APP CPU.
I (310) example: USB initialization
I (310) tusb_desc:
┌─────────────────────────────────┐
│  USB Device Descriptor Summary  │
├───────────────────┬─────────────┤
│bDeviceClass       │ 0           │
├───────────────────┼─────────────┤
│bDeviceSubClass    │ 0           │
├───────────────────┼─────────────┤
│bDeviceProtocol    │ 0           │
├───────────────────┼─────────────┤
│bMaxPacketSize0    │ 64          │
├───────────────────┼─────────────┤
│idVendor           │ 0x303a      │
├───────────────────┼─────────────┤
│idProduct          │ 0x4004      │
├───────────────────┼─────────────┤
│bcdDevice          │ 0x100       │
├───────────────────┼─────────────┤
│iManufacturer      │ 0x1         │
├───────────────────┼─────────────┤
│iProduct           │ 0x2         │
├───────────────────┼─────────────┤
│iSerialNumber      │ 0x3         │
├───────────────────┼─────────────┤
│bNumConfigurations │ 0x1         │
└───────────────────┴─────────────┘
I (480) TinyUSB: TinyUSB Driver installed
I (480) example: USB initialization DONE
I (2490) example: Sending Keyboard report
I (3040) example: Sending Mouse report