Results for “serial line”
Small, practical examples. Search by task or narrow things down below.
Trim surrounding whitespace from an Arduino String
Arduino / C: String.trim modifies the object in place.
Arduino / C✓ Tested
Turn on the built-in LED
Configure the Uno’s LED pin as an output and drive it high.
LED_BUILTIN✓ Tested
Understand setup() and loop()
Arduino / C: See initialization run once and the main loop run repeatedly.
Arduino / C✓ Tested
Update a JSON document with mutable nodes
C#: JsonNode permits targeted changes before serializing a document again.
C#✓ Tested
Use a wider type for a large count
Arduino / C: Use a wider type for a large count on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Use named states for a controller
Arduino / C: An enum makes state transitions easier to read than unexplained numbers.
Arduino / C✓ Tested
Validate a small stored payload with a checksum
Arduino / C: Store a checksum with the payload and reject a changed byte.
Arduino / C✓ Tested
Validate a whole ASCII identifier
JavaScript: Use an anchored expression without the multiline flag and reject a trailing line break explicitly.
JavaScript✓ Tested
Validate a whole ASCII identifier
TypeScript: Use an anchored expression without the multiline flag and reject a trailing line break explicitly.
TypeScript✓ Tested
Validate the number of positional arguments
Bash Scripts: Use the argument count to enforce a simple command-line contract.
Bash Scripts✓ Tested
Visit every reading in a fixed array
Arduino / C: Visit every reading in a fixed array on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Write and read a setting in EEPROM
Persist one byte using the update operation.
EEPROM✓ Tested