SAMD board 1.8.10 update to 1.8.11 causes flush to hang

Projects Programming
1

Environment:
Arduino IDE 1.8.13
JJRobots Devia board (recognized as Arduino Zero (Native USB port)
Windows 10
SAMD 1.8.10

With the above configuration the following minimal sketch operates as expected and outputs 2 rows of asterisks to the serial monitor.

Updating the SAMD board to 1.8.11 cause the flush at line 8 to hang and only 1 row of asterisks is sent to the serial monitor.

What is causing this?

void setup()
{
  SerialUSB.begin(115200); // Serial output to console
  while (!SerialUSB);
  Serial1.begin(115200);
  SerialUSB.println("Init...");
  SerialUSB.println("\n***************************************");
  Serial1.flush();
  SerialUSB.println("\n***************************************");
  Serial1.print("+++");  // To ensure we exit the transparent transmision mode
}

// MAIN LOOP
void loop()
{
}
2

Just realized there is a dedicated Arduino Zero section of this forum and that is probably a more appropriate area for this post..

Would one of the moderators please move this post to that section.

Thanks

3

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