Harry_T

Most recent activity

• Classes

  in JavaScript • 9 years, 9 months

  

  Yes - I think I will get one of the Espruino boards for the real experimenting. Just trying to find a use for these other ones I have first!
  Thanks for your help.

• Classes

  @Harry_T started

  • 5 comments
  • 2,450 views

  @Harry_T replied
• Classes

  in JavaScript • 9 years, 9 months

  

  That would explain it - thanks! I also have a 2.8" LCD version of the same board which runs v1.67 fine but seems to give the same error, just trying to run the first line.

  I presume that "Waveform" isn't in the 2.8" version as it's a small board.

• Classes

  in JavaScript • 9 years, 9 months

  

  Hello,
  I've come back to experimenting with this excellent tool and I've noticed there's a Waveform class.
  I've been trying to use it on a VET6 running v1.48 (I can't get newer versions to work - just get a white screen when I flash it).

  var w = new Waveform(256);
  for (var i=0;i<1024;i++) w.buffer[i] = 128+Math.sin(i*Math.PI/128)*127;
  analogWrite(A4, 0.5); 
  w.startOutput(A4, 4000);
  

  After the first line I get the error "ERROR: Constructor should be a function..."

  I am not sure how to use Classes, or if it is automatic. Is this Class not included in v1.48 - or the VET6?

  Many thanks,

  Harry

• LCD White

  @Harry_T started

  • 11 comments
  • 4,492 views

  @Gordon replied
• LCD White

  in General • 10 years, 2 months

  

  Hi Gordon,
  Sorry, I'm not too familiar with the nightly build concept - I downloaded on the 30th Jan if that helps.

  An example of the delays I built in were as follows:

  function toggle3() {
  	LCD.clear();
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
  	LCD.setColor(0, 0, 0);
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
  	LCD.fillRect(1, 1, 320, 240);
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
  	LCD.setColor(0, 1, 0);
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
  	PotPos = analogRead(C0);
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
      LCD.drawString(PotPos, 230, 210);
      digitalPulse(A2,1,50);
  	digitalPulse(A2,0,50);
  
  	setInterval(function() {
        LCD.clear();
        digitalPulse(A2,1,20);
        digitalPulse(A2,0,20);
        PotPos = analogRead(C0);
        digitalPulse(A2,1,20);
        digitalPulse(A2,0,20);
        LCD.drawString(PotPos, 200, 210);
  	}, 200);
  
  	digitalWrite(LED2,p=!p);
  }
  
  var l = false;
  var p = false;
  var PotPos = 0.1;
  
  setInterval("digitalWrite(LED1,l=!l);",8­00);
  
  setWatch(toggle3, E5, {repeat: true, edge:'falling'});
  

  Whether or not this program worked was dependent on the digitalPulse duration, and was often not repeatable. I found mathematical operations were less fussy than instructions involving the LCD.

  Introducing a SetInterval made things more complicated, and sometimes seemed to want a couple of digitalPulses at the end of the loop, and sometimes didn't. I'd have to evaluate one step at a time and see if it crashed.

• LCD White

  in General • 10 years, 2 months

  

  I downloaded the latest version on the website a week ago - that was the version I was using.
  I found if I put delays (digital pulse) in between all my instructions, I could get the LCD to operate on save(); - however it was temperamental and results were not always repeatable. I programmed in a constantly flashing light so I could tell if it had hung or not, which would happen quite often. However, sometimes the light would flash but the LCD would just be white. Adding a delay or changing the delay time sometimes fixed this.

• LCD White

  in General • 10 years, 2 months

  

  Serge's version at espruino-nightly.noda.se/2013-11-22/hyst­m32_24/ works perfectly and removes all the problems I'd been experiencing - I am now able to make the most of Espruino's power! A great tool. Thanks for making it Gordon.

• What is the latest espruino version that works with hy 2.4 boards?

  in General • 10 years, 2 months

  

  Serge - many many thanks - that is about 300 times better!

  Best regards,

  Harry

• LCD White

  in General • 10 years, 2 months

  

  Aha! I have it.

  1) Plug in the board with button 1 held down
  2) Re-connect in IDE
  3) Save(); in terminal
  4) Reset(); in terminal
  5) Copy and paste code in to terminal
  6) Save(); as normal