Some interesting USB console behavior, I can't understand.

[espruino-discuss3]

Posted at 2014-08-27 by Andrey

hi, All! look:

function lampOnOff(out,q){ 
  if (q==1)out.set();
  else if (q==2){ // flashes for 3 sec's
    out.reset();
    setTimeout(function(){out.set()  ;},500);
    setTimeout(function(){out.reset();},1000);
    setTimeout(function(){out.set();  },1500);
    setTimeout(function(){out.reset();},2000);
    setTimeout(function(){out.set();}  ,2500);
    setTimeout(function(){out.reset();},3000);
  }
  else out.reset();
}
function onInit(){
	setInterval(function(){lampOnOff(B5,2);},4000);
	setInterval(function(){lampOnOff(B6,2);},4000);
	Serial3.setConsole();
}

if I plug USB cable, both B5 and B6 flash simultaneously.
if USB cable unplugged, periods of outputs shift relative to each other.
and start working synchronously again if I put USB back.
I can explain it.. console moved from USB. And I have even no webIDE launched.
How i can make flashing
outputs synchronously without USB?
thanks!
ps: board F4Discovery; Espruino ver 1.67

[espruino-discuss3]

Posted at 2014-08-27 by @gfwilliams

Hi Andey,

It'll be this bug: espruino/Espruino#415

I noticed this a week or so ago, but I'm not sure if it's recent or not. If you're compiling your own you could just disable what happens in jshSleep

---

Posted at 2014-09-01 by user7265

I helped Andrey change project to fix this.

1. In \Espruino\targets\linux\jshardware.c we cut function

bool jshSleep(JsSysTime timeUntilWake)  {
...
...
...
}

to

bool jshSleep(JsSysTime timeUntilWake) {
  return false;
}

2. In \Espruino\targets\mbed\jshardware.cpp

bool jshSleep(JsSysTime timeUntilWake) {
   __WFI(); // Wait for Interrupt
   return true;
}

to

bool jshSleep(JsSysTime timeUntilWake) {
   return true;
}

3. In \Espruino\targets\stm32\jshardware.c

bool jshSleep(JsSysTime timeUntilWake) {
...
...
...
}

to

bool jshSleep(JsSysTime timeUntilWake) {
   return true;
}

We have a working result. Thank you!

---

Posted at 2014-09-02 by @gfwilliams

Great! Just so you know, as you are compiling for stm32, the only file that you need to change is the last one - stm32/jshardware.c