Leonardo on windows 7 - 64 bit - issue on Sperial - driver bug ?

Hello,

I recently acquired an Leonardo bord. I installed the IDE on windows 7, 64 bits. I had some trouble but I could solve it using your forum, by installing the Arduino version 1.03.

Now I can compile program, download, and execute.

I have somme issue when I want to Serial.Print for debug purpose.

  • Serial Read work ok, (and the Rx Led blink)
  • Serial Print Always fail (the Tx led always off)

The documentation of if(Serial) recommend the following fr the Leonardo :
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo
only
}
But the program keep looping and the Serial. The Serial always return false, even with the Serial monitor open.

In the Forum, topic Arduino Forum says the following :
I finally got it working, after reading a large number of postings. The issue is with the DTREnable and RTSEnable properties set to false, they need to be set to true, even though there is no handshake (HandShake: none), the virtual port requires this to trigger the data retrieval.

To test it, I tried to use a simple emulation terminal (putty) instead of the Serial Monitor of the IDE.
I could not open the COM9 port (the one used by Arduino at the insall). And in my case, even the Werial monitor does'nt not work.

I suspect a configuration problem on serial USB driver.
May be a hardware issue (also the communication to download works fine)

What’s your suggestions ?

Thanks.
Vincent

Hello,

That's me again.
I fact I was nt using putty properly. Now it's word OK with Putty.

So the problem does'nt come for the driver or the harware which are ok.

There is syply a bug on the Arduin IDE "erial monitor" which does'nt behave properly on the Leonardo uder windows 7, 64 bits.

Thanks and regards,

Vincent

Hi. I have same exact problem with Arduino Micro, which I understand works much like the Leonardo.

I can monitor Serial with Putty, but not with Arduino Serial Monitor.

While Putty works, it's a bit painful when I am frequently restarting a sketch.

I'm running Windows 7 Professional, 64-bit.

Did you find a resolution?'

Patrick