isConnected() does not work

[ElectricRCAircraftGuy]

isConnected() always seems to return 0, no matter what. This function seems to be broken in both the TrinketKeyboard and the TrinketHidCombo libraries.

This means also that this example sketch is broken, as it gets stuck in the while loop where isConnected() is called: https://github.com/adafruit/Adafruit-Trinket-USB/blob/master/TrinketKeyboard/examples/TrinketKeyboardPrank/TrinketKeyboardPrank.ino

[pixelrebel]

Thanks for this hint. It was driving me crazy why the prank code wasn't working!

I just commented out the line and put 12345 in my random seed. At least it works now!

[ElectricRCAircraftGuy]

So I'm wrong about isConnected()....sort of. It actually does work, though its implementation in the example sketch does not.

Replace this:

while (TrinketKeyboard.isConnected() == 0); // wait until connection

with this:

//wait until connected to USB before continuing
//-note that isConnected() will change to true at that point 
while (TrinketHidCombo.isConnected() == false)
{
  TrinketHidCombo.poll(); //The poll function must be called at least once every 10 ms, or you must command a keystroke. Otherwise, the computer may think that the device has stopped working, and give errors.
}

[ElectricRCAircraftGuy]

The poll() function keeps the USB connection active until isConnected() becomes true. Otherwise it fails.