Results for “Serial.available”
Small, practical examples. Search by task or narrow things down below.
Compare a command case-sensitively
Arduino / C: strcmp returns zero when both null-terminated strings match.
Arduino / C✓ Tested
Compare elapsed time across timer rollover
Use unsigned subtraction when a millisecond counter wraps.
rollover✓ Tested
Configure bounded retries after a failure
Docker / Compose: on-failure with a count limits automatic restart attempts.
Docker / Compose✓ Tested
Confirm the root filesystem rejects writes
Docker / Compose: A read-only root prevents creating files outside writable mounts.
Docker / Compose✓ Tested
Control an LED from a button
Translate an active-low button input into an LED output.
button✓ Tested
Convert a supplied ADC count to volts
Arduino / C: Scale a ten-bit ADC count using an explicit reference voltage.
Arduino / C✓ Tested
Convert Celsius to Fahrenheit
Arduino / C: Use floating-point constants to avoid integer division.
Arduino / C✓ Tested
Copy a directory’s contents into an image
Docker / Compose: A directory COPY includes its children at the destination.
Docker / Compose✓ Tested
Copy a file into a created container
Docker / Compose: docker cp can copy into a container before its process starts.
Docker / Compose✓ Tested
Copy a file into an image
Include a small application file during the build.
Dockerfile✓ Tested
Copy a flash string into a bounded RAM buffer
Arduino / C: strncpy_P reads from program memory into ordinary RAM.
Arduino / C✓ Tested
Copy a multibyte interrupt-owned counter atomically
Arduino / C: ATOMIC_RESTORESTATE restores the interrupt state after reading a shared value.
Arduino / C✓ Tested