Adafruit_TinyUSB_Arduino VS arduino-pico

https://gitlab.com/baiyibai/pico-w-usb-host-mqtt-numpad

https://github.com/adafruit/Adafruit_TinyUSB_Arduino

My implementation plugs in much higher into the stack and doesn't read the full USB bit mask output, which indicates how many keys are pressed/released.

From my limited understand ing, it should be possible to pass these USB messages from HID client to HID host and vice-versa. Then it's only a matter of sending this information over a TCP/UDP interface. However, from my research, it seems the TinyUSB library doesn't provide the full bitmask resolution necessary for all devices. The YouTuber Wendell from LevelOneTechs has also talked about the troubles of getting some devices working with his KVM products, so it may not be as simple as I'm suggesting here.

Overall though, a $15/endpoint is very attractive.

I'm curious about this restriction to ESP32-S series as shown here: https://docs.tinyusb.org/en/latest/reference/supported.html . This article https://www.pschatzmann.ch/home/2021/02/19/tinyusb-a-simple-tutorial/ claims that "Most Microcontrollers have a built in Serial USB functionality that can not be changed (e.g. ESP32, ESP8266". OTOH, https://github.com/adafruit/Adafruit_TinyUSB_Arduino indicates that all ESP32 chips are supported.

Well theorically any Arduino with a native USB connection (Atmega32u4, SAMD21, STM32, ESP32, Raspberry Pico...) would be able to do that, the difficult part is mostly finding a good library that can do that if you're not an ultra expert programmer. Here is an example, this one can support SAMD, ESP32 and Pico for instance (be careful you need specific cores to make it run). Here is an example how to use it

I have the Adafruit ESP32-S2 TFT board, and I am trying to read in a USB peripheral on my ESP board. I thought this was going to be an easy task and I am quite overwhelmed. I was hoping I could stay in the circuitpython ecosystem, but it seems like making the ESP32 a USBhost is not supported yet. My next level of comfort would be in the arduino ecosystem using https://github.com/adafruit/Adafruit_TinyUSB_Arduino. I believe this will do what I want, but I am having difficulty porting it into the Arduino core. Has anybody here done this successfully? I'm specifically stuck on #2:

Alternatively, go up a level and use Arduino and the Arduino TinyUSB wrapper library. This is also in active development with many recent MIDI fixes.

This is what you want https://github.com/adafruit/Adafruit_TinyUSB_Arduino There are examples for various USB device types.

I managed to get the Arduino IDE to work great with my Pi Pico's using earlephilhower/arduino-pico and TinyUSB in the USB stack. I can code for MIDi and do all kinds of neat stuff... But...

I am trying to build a data logger. Currently my hardware is a Raspberry Pi Pico W, a SHT41 (https://www.adafruit.com/product/5776), and a small breadboard. Software is Arduino IDE, arduino-pico (https://github.com/earlephilhower/arduino-pico), and Adafruit_SHT4X library (https://github.com/adafruit/Adafruit_SHT4X).

The standard Pico w SDK has examples for Bluetooth classic, serial connection, mouse control, keyboard control etc... Everything you need can be found HERE

If you want more guidance, you could use the Arduino framework https://github.com/earlephilhower/arduino-pico

If you are using the earlephilhower implementation of the Arduino Core for Pico, wifi is documented here: wifi docs

rp2040 is really powerful its not a conventional "desktop" raspberry pi, its a microcontroller similar to stm32 or the avr boards that the arduino uses. https://github.com/earlephilhower/arduino-pico for arduino support.

Do you want to do serial communications along with USB HID (keyboard)? Sure, you can do that with TinyUSB. I've done it with the arduino-pico core: https://github.com/earlephilhower/arduino-pico