webusb example - RGB LED about adafruit_tinyusb_arduino HOT 9 CLOSED

@PTS93 feel free to do so, I push an PR for webusb-rgb to control on-board neopixel already, you may want to check that out. My javascript and html already exceed its limit with these 2 examples :D
#23

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Kind of related, where is the arduino sketch for the existing webusb example?

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@PTS93 after these 2 PRs
adafruit/Adafruit_nRF52_Arduino#313
#22

starting with nrf first, I will update the samd core later on.

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please have an example for 3 x PWM output - so we can use https://webusb.github.io/arduino/demos/rgb/

I think it is better to use on-board neopixel which is on most of our feather board. 3 PWM work as well, but it is secondary via compiler switch.

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OK yes neopixel is good!

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@PTS93 it is merged to https://github.com/adafruit/Adafruit_TinyUSB_Arduino/tree/master/examples/WebUSB/webusb_serial

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Awesome! I wanted to make a more elaborate example with the Circuit Playground Express unless there are already plans for something like that?

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That's helpful, thank you!
My web frontend skills are a bit rusty but I should be able to make something nice.
Do I understand correctly that with webusb you just send buffers back and forth like with raw hid?
That serial.js doesn't look like its doing anything that would be specific to classical UART.

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@PTS93 webUSB specs actually doesn't say that, it is more like an optional extension. However, this Arduino library did implement the webusb as vendor class driver, and indeed as an subclass of Stream much like Serial for user convenience.

serial.js is only used to discover which interface that is 0xff and their endpoint number. As well as send the 0x22 connect/disconnect event. These aren't part of webusb neither, it is purely part of the this library specific implementation of webusb as stream. Hope that help to clear something up.

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