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Heltec ble display #1295

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NorthernMan54
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Description:

Added to Heltec board display code logic to reduce corruption of messages on the display

Two piece of defensive code were added

  • Only display messages to the display when operating on Core 1 ( Default Arduino ESP32 CONFIG_ARDUINO_RUNNING_CORE )

  • Only display one character/string at a time

In the event of failure, default to Serial output.

PS SSD1306 driver similar issues

ThingPulse/esp8266-oled-ssd1306#326
ThingPulse/esp8266-oled-ssd1306#352

Checklist:

  • The pull request is done against the latest development branch
  • Only one feature/fix was added per PR and the code change compiles without warnings
  • I accept the DCO.

Two piece of defensive code were added

- Only display messages to the display when operating on Core 1 ( Default Arduino ESP32 CONFIG_ARDUINO_RUNNING_CORE )

- Only display one character/string at a time
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