Results for “Serial.available”
Small, practical examples. Search by task or narrow things down below.
Supply an environment variable to an exec process
Docker / Compose: An exec environment override applies to the new process only.
Docker / Compose✓ Tested
Toggle a bit with an XOR mask
Arduino / C: XOR flips selected bits and leaves all other bits unchanged.
Arduino / C✓ Tested
Toggle an output using an explicit software state
Arduino / C: Keep the intended output state in a Boolean variable.
Arduino / C✓ Tested
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 build argument while creating an image
Docker / Compose: ARG supplies a build-time value that is not automatically a runtime environment variable.
Docker / Compose✓ 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
Verify a read-only volume rejects writes
Docker / Compose: A failed write confirms the mount’s read-only behavior.
Docker / Compose✓ Tested