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Blink.ino only works when Serial Monitor is open #23

@hexagon5un

Description

@hexagon5un

Steps to reproduce:

  1. flash Blink,ino with an LED on GPIO13
  2. Hit reset.
  3. No blinky.
  4. Open serial terminal of your choice.
  5. Hit reset.
  6. Blinks.

Multiple resets fail to get blinking, and the first one after a serial terminal is connected works every time. The same effect occurs regardless of which pin is used for GPIO, and across terminals (Arduino's serial monitor, picocom, etc.).

Fun bug! That baffled me for a bit.

(Using Arduino 1.6.8 and fresh pulls from esp-idf and arduino-esp32 from today. Board is a blue WROOM dev board.)

[Edit a bit later]: This seems to be a wider issue. I get the same behavior with the esp-idf template app. I'm going to file over there instead. Feel free to close this one.

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