Sketch uses wifi ... but linino isn't up yet ...

Official Hardware Classic Yún
6

Here is some code I implemented to start up Firmata. It waits for u-boot to complete:

void setup() 
{
  
  Serial1.begin(115200); // Set the baud.
  while (!Serial1) {}
   // Wait for U-boot to finish startup.  Consume all bytes until we are done.
  do {
     while (Serial1.available() > 0) {
        Serial1.read();
        }
    
    delay(1000);
  } while (Serial1.available()>0);
... and some other stuff.
}

I really wish they used a semaphore, but that would have made our lives easy. XD