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  VS Arduino › Visual Micro › Usb/Serial/WiFi Debugging › Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
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Hot Topic (More than 8 Replies) Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem (Read 8325 times)
Ethan Lin
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Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
Sep 2nd, 2016 at 2:10pm
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Hi Visual Micro,

You did a good job I truly thanks for the great work. I am using Mediatek Linkit ONE board and try to debug with vm. The Debug build failed with the following message:

error: 'SerialUSB' was not declared in this scope
   void setup() { 
    debugger: The error shown above might be caused by invalid breakpoint syntax or the board is not yet supported for debugging (pls let us know!)
Error compiling project sources

Basically Linkit ONE is Arduino-like device and I can compile and upload sketch by VM. In Linkit ONE, it uses Serial.print() to print messages to COM port and I am wondering that's something different than Arduino board. Please advise what I can do to resolve the problem. Thanks a lot.
« Last Edit: Sep 2nd, 2016 at 9:07pm by Tim@Visual Micro »  
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Re: Debug build failed with error message implies 'SerialUSB' problem
Reply #1 - Sep 2nd, 2016 at 2:44pm
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Thanks for the note

Visual micro needs to know the class of the serial and has made an incorrect assumption that the class is SerialUSB which is obviously wrong.

I will try it over the next few days to see what class it should use.

Is the core in Board Manager or do we download from a link on the web?

Thanks

  
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Re: Debug build failed with error message implies 'SerialUSB' problem
Reply #2 - Sep 2nd, 2016 at 3:09pm
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I found the install guide and see the Serial uses UARTClass so we will make an update for the board.

On a different note I see it is based on the Arduino Due which we recently released JTAG hardware debug for via Atmel Studio. I am not clear if the board you have supports jtag. I found this post to suggest later boards would have a jtag connector if it does then you will find a better debug experience in atmel studio with visual micro

https://labs.mediatek.com/forums/posts/list/97.page

This example uses Arduino Due but there should be no difference between the Due and your board
« Last Edit: Sep 2nd, 2016 at 3:10pm by Tim@Visual Micro »  
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Re: Debug build failed with error message implies 'SerialUSB' problem
Reply #3 - Sep 2nd, 2016 at 3:38pm
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Hi VM team,

Thank you for incredibly fast response and useful information. I don't find the JTAG connector on my board. I will write mail to ask the manufacture about JTAG support. 

In the meanwhile, I will wait for the update from your next release. What is the release cycle typically?

The specific issue I am addressing is unexpected device hang and I want to check the callstack to see what happen before the board died. I believe VM can do this by reading the document. 

Thanks!
  
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Re: Debug build failed with error message implies 'SerialUSB' problem
Reply #4 - Sep 2nd, 2016 at 3:47pm
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Releases are often every few days

Notifications are here http://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES

Or the gallery
  
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Re: Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
Reply #5 - Sep 2nd, 2016 at 9:07pm
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There is a new release with debug support for Linkit ONE boards
  
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Re: Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
Reply #6 - Sep 3rd, 2016 at 2:57pm
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Super fast fix! impressive. 

I installed the update and can build & upload sketch on my Linkit ONE board. Then I setup a breakpoint and tried to start debugging the code. But I found the debugger launching never successes. The screen shot show what I got here. I've tried
(1) Reconnect the device
(2) Toggle connect button in monitor window
 
Please advise what I can do for the next. Many thanks!
  
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Re: Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
Reply #7 - Sep 3rd, 2016 at 3:20pm
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EDIT: I know you are using 19k for serial but it doesn't matter for the test

Okay

Let's check the Serial is working as expected. The 32 bit boards have more than one serial.

Please switch to release mode and close the project

Create a new project file>new>arduino project

Add the following to the .ino

Upload the sketch and open the serial monitor.

Make sure the Dtr box is ticked on the monitor, make sure the speed shows 115200

Do you see Starting and the Looping messages in the monitor?

If not please try Serial1. instead of Serial. below.

Thanks

Code
Select All
void setup()
{
 Serial.begin(115200);
 Serial.println("Starting");
{

void loop()
{
 Serial.println("Looping");
 delay(1000);
}


« Last Edit: Sep 3rd, 2016 at 7:07pm by Tim@Visual Micro »  
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Re: Linkit ONE Board - Debug build failed with error message implies 'SerialUSB' problem
Reply #8 - Sep 4th, 2016 at 1:07am
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In Release mode, the messages were printed through Serial.println() successfully. "Serial1" on this borad is used to connect to external devices. 

But I had no luck in Debug mode. The debugger wasn't launching as expected.
  
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