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My installation is:
STLinkDriver 1.04.00
STM32 ST-Link Utility 3.1
Windows Driver Package - STMicroelectronics USBDevice(12/05/2012 13.54.20.543)
All of this is installed using "start as admin"

My main problem was the USB cable which was wired for power only.

Everything was installed on Windows 8, and is still running after updating to 8.1

works fine on my stm32f4Discovery with nightly build from 13th of Jan

I'm sorry, but the answer is no

I checked with 1v44 and it works fine.
There must have been a change between 16th of dec and 18th of dec.
Nightly build from 16th works fine, from 18th it doesn't.
Hope this helps
Juergen

• I used reset() and this command does not reset the hardware. So B14 was set by testing with SPI2 some time before.
  
• shorted A6 and A7 sent Hello and got back ="\x00\x00\x00\x00\x00"
  
• same with C2 and C3 and SPI2
  

• placing the board in an angle does not change anything.
  
• Adding a line
  SPI1.setup({sck:A5, miso:A6, mosi:A7});
  did not change anything.
  
• On any call to read register I get back [0,0];
  for(var i = 0;i < 63; i++){console.log(i,SPI1.send([i+128,0], E3));}
  
• Adding a wait between each call did not change anything
  
  

BTW, testing same with SPI2 gives same result. Is there any way to recognize connected SPI devices ?

2ndBTW, dump returns this(and a lot of other lines)
SPI1.setup({sck:A5, miso:A6, mosi:A7});
pinMode(A6,input_pullup);
pinMode(B14,input_pullup);
digitalWrite(E3,1);
Where is B14 comin from ?

Is there a way to read acceleromter on STM32F4Discovery ?
I tried the example on http://www.espruino.com/LIS302DL,
but it always returns 0 for accx and accy on my board.
Checked it with Espruino version 1.45

I'm also interested in this. Just seen an 25€ offer in ebay (Germany).
As soon as I get my Ultimate Kit, this board could be something like a host for all Espruinos, ...
http://www.ebay.de/itm/STM32F4-DISCOVERY­-STM32F429-TFT-LCD-STM32-ARM-Cortex-M4-D­evelopment-Board-/161177600716

Regards from Krefeld(sunny, 3 degrees)
Juergen

Hello Andrey,
for me it works this way. Type of sensor can be recognized in device info of sensor
regards
Juergen

function OneWireTemp(pin){
  var me = this;
  me.ow = new OneWire(pin);
  me.device = me.ow.search()[0];
  me.deviceType = me.device - ((me.device >> 8) << 8);
  me.readRegister = function(callback,n){
    if(!n)n = 8;
    var reg = [];
    me.ow.reset();me.ow.select(me.device);me­.ow.write(0x44,true);
    me.ow.reset();me.ow.select(me.device);me­.ow.write(0xBE);
    for(var i = 0; i < n; i++){reg.push(me.ow.read());}
    return reg;
  };
  me.getTemp = function(callback){
    var t,reg = me.readRegister(2);
    t = reg[0] + (reg[1] << 8); if(t > 32767) t -= 65536;
    switch(me.deviceType){
      case 40: t = t / 16; break;//ds18B20
      case 16: t = t / 2; break;//ds18S20
    }
    return t;
  };
}

Just checked on my STM32F4Discovery and it works fine with this:
var t = require("DS18B20").connect(D8);
console.log(t.getTemp());
BTW, V1.41 is an old version, did you test actual version(V1.44) form nightly build ?
https://espruino-nightly.noda.se/

regards Jürgen

Prototyping works fine in Espruino like this:

function a(v){ this.a = v; this.inc = function() {this.a++;}; }
function b(v,x){ a.call(this,v); this.b = x; }
b.prototype = a;
b.prototype.constructor = b;
var t = new b(1,5); console.log(t.a,t.b);
t.inc(); console.log(t.a,t.b);

I now would like to create something like OneWireDS18_20 using prototype and cannot get it working.

function myOneWire(pin){ OneWire.call(this,pin); }
myOneWire.prototype = OneWire;
myOneWire.prototype.constructor = myOneWire;
var myOW = new myOneWire(D8);
console.log(myOW.search());

Thanks for the explanation.
After adding var me = this, and using me instead of this, it works fine now (at least for my need).
I agree to you, priority of this is not high.
BTW, maybe something like "use strict" is an option (?)

I've had the problem in a big function and reduced to show the problem.
Simple example for the need could be to

• have a blinker running
  
• need the status of the blinker somewhere else in your code
  Right now I help my self using a get-function, instead of b.a
  Any handling of a (line 5 and 6) should cause an error in my understanding.
  In jsfiddle it does.
  Before running this short example my board(32STMF4Discovery) was disconnected and "reset();" was sent in terminal window, before transfering the source above.
  

trying this, I would expect an errormessage for incrementing a.
In Espruino, a is incremented twice, and in log there is 1 3 5 ....21 23
But by typing console.log(b.a) thje answer is 0, always.
I'm confused, so is the problem on my side or is it Espruino ?

function test(){
  var interval;
  this.a = 0;
  interval = setInterval(function(){
      a++;
      this.a++;console.log(a,this.a);
    },2000);
}
var b = new test();

There is an error message in log:

Generating platform configs
CC src/jslex.o
CC src/jsvar.o
In file included from src/jsinteractive.h:18:0,
                 from src/jsvar.c:18:
src/jshardware.h:25:23: 
fatal error: jspininfo.h: 
No such file or directory
compilation terminated.
make: *** [src/jsvar.o] Error 1

I tried to interprete Boards and Pins files in javascript.
Its a new button in WEB IDE, which

1. opens a selectbox for boards
   
2. reads board-info
   
3. reads pins-info according to that
   
4. creates groups of devices
   
5. adds a selectbox for groups of devices
   
6. selecting an item opens a tooltip
   
   

There are more options than on Espruino homepage.
I checked STM32F4Discovery and found CAN and SD ports.
On some pins I found more devices (e.g. PC10,PC11 are uart and usart)
Any idea what I forgot to check ?

Hello Gordon,
thanks for the detailled feedback. I did not check the changes you mentioned yet, but I followed your suggestion to add functions to your WEB IDE.
There is a download for testing available at http://www.jumware.com/espruino/webapp/E­spruinoWebIDE.zip
Changes, you can find them by searching for comment with "juergen" in.

1. added buttons for scripts, snippets and tutorials in main.html. All open a short form with a selectbox and a checkbox to switch between replace and append.
   
2. added initialization of new buttons in terminal.js
   
3. added a lot of plugins for codemirror in main.html
   
4. added initialization for extensions in terminal.js
   
5. added additional javascript to handle new buttons
   
6. added a minify button in main.html. Opens a short form with selectbox for type of minify, a checkbox for sending directly to device, and a button to start minify
   I would like any feedback. If this is helpful, feel free to do whatever you want withit.
   Now lets go through other items:
   
7. I would not automate connecting/disconnecting to COM. I like to send infos to console during debugging, which would not appear anymore. I would prefer to switch this manually.
   
8. the "problems" found by lint are not important, missing semicolon or spaces at the end. Don't waste any time on that.
   
9. binary format is not only a problem of lint, its also a problem for minify. As soon as more browser will support this, the problem will disappear sooner or later. Please take it as a hint only.
   
10. extensions for code completing and for lint to match functions and syntax fo Espruino is a good direction. Right now my lack of knowledge is the main hurdle doing this.
    
11. I am not familiar with python, therefore I would like to wait for you wasting some time for creating JSON files ;-)
    regards from Krefeld(Germany about 12 degrees celsius and rainy)
    Juergen
    

Waiting for espruinos, I decoded to start first test on STM32F4Discovery.
I had to spend some time get it running, as usualthe problem was in front of the keyboard.
Anyway, these times are gone.
First start was done with Chrome based IDE. A simple blinking started soon, perfect.
Problem I found was the CPU load.
Connecting to the COM-Port eats CPU like crazy.
Usually Chrome takes 40%, on my AMD quad core with windows 64 and 8GB.
Therefore a search started to compare against a simple terminal:
Putty and others refused to connect to COM port, at the end I got Tera Term running.
BTW, it does not take any remarkable power, so chrome does something strange.

Next step was to write some short snippets.
At that time I missed the IDE, so why not write my own ?
Codemirror is a beautiful starting point, and together with some additional lines, a very, very, very first editor was born. http://www.jumware.com/espruino/espruino­.html. Testing ran on FireFox only.
Added are options to

• load code from espruino Github
  
• load examples from Github
  
• load some first snippets
  
• minify the code using Google closure compiler
  During testing I found that:
  
• console.log takes logs one parameter only
  
• arguments keyword is not supported
  
• lint finds a lot of minor problems like missing ";"
  
• binary format is often unknown in the big world of javascript
  
• minify seems to work fine with WHITESPACE ONLY
  
• minify my snippet for stepper with SIMPLE_OPTGIMIZATION does not work on Espruino. Syntax looks very strange to me, but all browsers took it.
  
• example for stepper does not work with Microstepping, I had to use a different port. Espruino gave helpful error message. Somewhere in the background Espruino seems to have helpful information about ports.
  
  

There are some COM-Plugins in the big wide world for Firefox, but I did not get any of them running. Copy & Paste was my solution to this problem. Hopefully the WebSerial API group, mentioned by Florian Bender will be succesful soon.
Anyway, I would like to add some more functions to the editor. One is to give some help to select a board and get informations to choose available pins.
There is a lot of information available in Espruino GitHub. My problem is 1st to understand and 2nd to download, since this would be a cross-Domain call. Easy solution (at least for me) would be a JSON file.
As soon as I get more devices running more snippets will be added.

Hello Gordon,
good news first, it works.
@ Gordon LD7 lighted up all the time.
Thanks to your and tickTock's help most possible problems could be checked.
So at the end there was only one thing left, I took a new USB-cable out of my box and thats it. Should have done this before, its always the unexpected.
Espruino Web IDE found the port and first test with LED blinking is working.
Thanks for your help and sorry for wasting the time.
Jürgen

Thanks tickTock and Gordon,
@tickTock, drivers are installed now, but result is the same, there is no Ports (COM & LPT) folder on my Windows 8(64 bit) PC in device manager. Chrome application does not show any port.
I tried the same on my 2nd computer (Windows 7, 32 bit). There the Ports-folder is available, showing 2 bluetoth ports (com4/com5) only. Chrome application shows com3/com4/com5, none of them works.
@Gordon, the Led (ld4?) flashes very shortly. I could install the sample application without problems, so ST-Link and flashing works. Waiting for up to 30 minutes didn't change anything.
BTW, cn1 is connected to power, cn5 is connected to PC, power LED is on, Com LED flashes red and cn5 LED is on.
If only cn1 is connected to PC, power is on, Com is on. After connecting ST-Link, com LED flashes red/green.
For testing I take 1v39, some tests with other version from nightly build gave same problems.
Regards from Krefeld(Germany, about 18 degrees Celsius and sunshine)
Jürgen

Waiting for my espruinos I decided to start with STM32F4Discovery.
Everything worked fine up to the point, where I tried to connect to Espruino itself.
Installation of ST-Link and flashing of the software worked fine.
See images of steps:

1. http://www.jumware.com/STM32/Startpoint_­nothing_installed.jpg
   
2. http://www.jumware.com/STM32/STM_Connect­ed.jpg
   
3. http://www.jumware.com/STM32/Link_Utilit­y_InstalledAsAdmin.jpg
   
4. http://www.jumware.com/STM32/StLink_Inst­alled.jpg
   
5. http://www.jumware.com/STM32/STM_Connect­edAgain.jpg
   
6. http://www.jumware.com/STM32/STLink_Star­ted_connected.jpg
   
7. http://www.jumware.com/STM32/ConnectedVi­a_CNN5.jpg
   
   

Now I reached the point to enter first command but I don't get a connection.
Last step was to connect the board via cn1 to power and via cn5 to my computer.
I tried a lot of other options, but result always was the same, nothing.
Internet is full of instructions but right now I am more confused than ever before.

Hopefully there is somebody helping me.