Serial Software for Arduino

[last updated: 2025-05-13]
GPS module
hiking tracker
GPS calculation code
SPI home page
i2c home page
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• The Arduino uses libraries of functions and commands to communicate with the serial interface.
  SoftWareSerial: is the default (built in to Arduino release) and most-commonly used, however it has drawbacks for the GPS application:
  namely high CPU usage, and something to do with the way it uses interrupts that I don't understand but that supposedly can result in lost data.

• Alternatives In forum-consensus-recommended order:
  • AltSoftSerial ((link to:) pjrc)
  • NeoSWSerial ((link to:) github)

• Refs:
  • https://forum.arduino.cc/t/serial-input-basics-updated/382007
  • more links here:
    https://forum.arduino.cc/t/useful-links-check-here-for-reference-posts-t...

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