HID scrollMouse

[espruino-discuss]

Posted at 2020-03-03 by Mrbbp

Hello i'm trying to simulate a mouse with a HC-sr04.

it works well with the x,y coord for the mouse from the example

mouse.send(0,valueFromHcSR04,mouse.BUTTONS.NONE); // X movement, Y movement, buttons pressed

in the report descriptor from here, there is line for x, y and mouseScroll 0x038
description commented found on sparkfun's forum

  0x09,   0x30,
  0x09,   0x31,
  0x09,   0x38,

How to send a mousescroll ? and which value should i send?

best regards

é.

[espruino-discuss]

Posted at 2020-03-03 by Mrbbp

it works like that

E.sendUSBHID([0&7,0,0,sens]);

where sens is equal 1 or -1 for scrollup or down

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Posted at 2020-03-04 by Mrbbp

How to get mouse position (coords x,y) and not mouse mouvement?
how to use a mouse mouvement in a webpage when mouse is down to the screen?

regards

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Posted at 2020-03-04 by @gfwilliams

Thanks for posting up how to send the scrollup/down - that's great.

You're asking how to send Absolute Position? Much like a tablet/touchscreen?

I think what you need is USBTablet: http://www.espruino.com/USB#tablet

However I don't think that supports a wheel by default! To get that you'll have to make your own HID report descriptor by mashing the wheel's descriptor into the tablet bit...

https://github.com/espruino/EspruinoDocs/blob/master/modules/USBMouse.js#L38
https://github.com/espruino/EspruinoDocs/blob/master/modules/USBTablet.js#L40

But at that point my knowledge is at an end - you'll have to consult Google and use some trial and error to figure out what will work.

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Posted at 2020-03-05 by Mrbbp

Thanxs @gfwilliams for the HIDtablet...
but in my browser, i'm enable to fire an event
no touchstart
no mouse click
no mousemove

which event do i listen?

regards
é.

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Posted at 2020-03-05 by Mrbbp

i tested chrome app with Serial connection...
the example to connect an espruino in the google github doesn't work !
....
The console.log output (or print()) is huggly to parse in a browser and lot of frame (1/3) are lost even in 9600baud...
is there a better way to "print" to the serial port? (for sure there is but i'm a stupid graphic designer with too few knowledge in code) ;)

thanks for your help

regards

ps: i'm looking for a "simple way" to introduce "tangible interface" (input from real world) for graphic design's students (with html5 and js bases NO Processing.org)... i'm testing chrome-app ... it's not the best way but the "easiest". (for my pov to combine : cheap hardware +html5/css/js (webtech) + newb.
ok, i have to coming out: "i love espruino for learning only one langage to code Hardware and Web..."
i have a lot of arduino compatible board but... i do not like the langage... therefore they take dust...

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Posted at 2020-03-06 by @gfwilliams

Honestly I'm not sure about the USBTablet stuff - it may be it wasn't recognised by your PC?

Wow, first I've come across that 'connect to espruino' example. I can't get it to work either - but to be honest those hosted Chrome apps are being removed by Google soon anyway.

How about trying this: https://github.com/espruino/EspruinoWebTools#uartjs

It should be just what you want - it'll work off any HTTPS page as long as you view in an up to date Chrome web browser. Right now you have to enable it in chrome://flags (https://codelabs.developers.google.com/codelabs/web-serial/#2) but in a few months that won't be needed.

You can use the Web Serial API directly, but the uart.js wrapper should provide a nice interface around it.

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Posted at 2020-03-06 by Mrbbp

Gorgeous!
I tested uart.js. Works fine and just as i need.
Thanks very much @gfwilliams for your work.
I took some time to request a serialapi token. It works in local (i was afraid to have to work online but i does not)
I’m a happy guy. I have all i need.