Wii Nunchuck

I have now tested my Wii Nunchuck on my Pico and esp8266, and now I have it running on both.
I had to set the freq to 80 on esp8266 and put in a few delay's.

// nunchuk_03 -     pico - esp8266-01

//White:	Gnd  -  Gnd
//Red:		3V3  -  Vdd
//Yellow:	SCL  -  B6  -  D0
//Green:	SDA  -  B7  -  D2


function Wait(ms) {
  var a = Date().getTime() + ms;
  while(Date().getTime() < a) {}
}

var d;
var a;

(function() {
  var tg = 0x2F; // 0x2F ^ 0x73 = 0x5C
  var esp8266 = true;

  if(esp8266) {
    // esp8266
    var ESP8266 = require('ESP8266');
    ESP8266.setCPUFreq(80);
    pinMode(D0, 'opendrain'); // scl
    pinMode(D2, 'opendrain'); // sda
    I2C1.setup({scl:D0,sda:D2});
  }
  else {
    // pico
    I2C1.setup({scl:B6,sda:B7});
  }

  // pico and esp8266-01
  var i2c = I2C1;
  i2c.writeTo(0x52, [0xF0, 0x55]);
  Wait(11);
  i2c.writeTo(0x52, [0xFB, 0x00]);
  Wait(11);

  setInterval(function() {

    i2c.writeTo(0x52, [0x00]);
    Wait(1);
    d = i2c.readFrom(0x52, 6);
    tg ^= 0x73;
    console.log(d, ' ', String.fromCharCode(tg));
    console.log({
      joy : {x:d[0],y:d[1]},
      acc : {x:(d[2]<<2)+((d[5]>>2)&3),
             y:(d[3]<<2)+((d[5]>>4)&3),
             z:(d[4]<<2)+((d[5]>>6)&3)},
      btn : {z:!(d[5]&1),c:!(d[5]&2) }
    });

  },500);

})();

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Another pic.

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...I see your cycle consuming wait(n /*ms*/) function invocations... did ou think of an alternatives?... because this is kind of blocking the JS thread completely when the 500ms interval'd code runs.

I know, it is not easy to inverse a function... and make it with multiple entry/resume points... but it should be possible... May be for this case it is not worth the effort.

No, my first goal, was to prove to get it working on esp8266-01.

by default PICO does 100KHz and ESP8266 does about 100KHz (80MHz) and 250kHz (160MHZ)

@Frida please try again on PICO and use setup option bitrate:50000 and without Wait()

Do not use bitrate option on ESP, I will reboot ......

@allObjects

The code above has the wait for the setup part - there are no waits in the 500 interval?

Yes there are 1ms

The timings are OK, but you can't communicate with the device that is attached via I2C, right? Then you should check the circuit. Did you connect 4.7K pull-up resistors to both I2C lines?

Got a Wii Nunchuck

Could not not find a adapter to hook up that thing

How do you connect that little nice I2C device ?

I cut the wire, but there is:
https://www.adafruit.com/products/345

http://www.ebay.com/sch/i.html?_nkw=wiichuck

thanks @Frida and @luwar

I cut the wire :-)