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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@stephaneAG
Back ! :)
@allObjects I meant we could ease the use of the GPIOs the way we write the lib ;)
Also related to the MAX3421e:
https://www.circuitsathome.com/chome_downloads/UHS_mini_10.pdf
https://www.sparkfun.com/datasheets/DevTools/Arduino/USBHostShield-v13.pdf
As the guy(s) behind https://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-for-arduino-pro-mini have surely a good idea of caveats / hints on implementing it, I just sent them a mail, asking politely for stuff & forwarded the topic :)
@Gordon the following shield uses a different chip but is provided flashed to support different stuff http://www.hobbytronics.co.uk/usb-host-mini
I also wonder if the shim should still provide access to some of the Pico pins not used ( in other words, have wider, 2 row pinouts on edges of the Pico, providing access to the GPIOs of the MAX' ) ?
Anyway, I plan to add the schematics found in the datasheet / the Sparkfun's one / the CircuitsAtHome's one to a repo on 123D Circuits to easily share & update stuff on this ( .. )
Lastly ( not that related - only to Espruino ;p ): I had a little fun messing with a simple RGB LED ( common cathode ) with Espruino yesterday, and as I couldn't see any tutorial on these on the Espruino website ( yet there are at least 5 tuts on adressable LEDs ^^ ), the infos ( while really basic ) & the code may be helpful to others ( and may be also hugely improved I guess) :D
--> https://github.com/stephaneAG/Espruino_tests/blob/master/dummyRgbLEDsTests/fadeRgbLEDs_Espruino.js
Nb: the code is loosely adapted from the Adafruit's one ( thx guys ;p ) https://learn.adafruit.com/rgb-led-strips/example-code, and this one is also of interest https://learn.adafruit.com/adafruit-arduino-lesson-3-rgb-leds/arduino-sketch
:)