Results for “Serial”
Small, practical examples. Search by task or narrow things down below.
Copy a multibyte interrupt-owned counter atomically
Arduino / C: ATOMIC_RESTORESTATE restores the interrupt state after reading a shared value.
Arduino / C✓ Tested
Copy a string with a guaranteed terminator
Arduino / C: Reserve one character for the terminator when copying a bounded string.
Arduino / C✓ Tested
Count a button’s falling edge in the main loop
Arduino / C: Compare each reading with the previous state to detect transitions.
Arduino / C✓ Tested
Count a falling edge with an interrupt
Increment a counter when an external input changes.
attachInterrupt✓ Tested
Count a rising edge with an interrupt
Arduino / C: RISING triggers when the input changes from low to high.
Arduino / C✓ Tested
Count down with a bounded loop
Arduino / C: Count down with a bounded loop on an Uno with the Serial Monitor set to 9600 baud.
Arduino / C✓ Tested
Count five LED flashes with a for loop
Arduino / C: Repeat an LED action a known number of times and print the current count.
Arduino / C✓ Tested
Debounce a button with a stable-time check
Accept an input change only after it stays stable for 30 ms.
debounce✓ Tested
Detect truncated formatted output
Arduino / C: snprintf returns the length it would have written, excluding the null terminator.
Arduino / C✓ Tested
Dispatch a command through function pointers
Arduino / C: A small function table can map validated command indices to actions.
Arduino / C✓ Tested
Drive the built-in LED low after turning it on
Arduino / C: digitalWrite changes the actual output level of a configured pin.
Arduino / C✓ Tested
Encode a value as little-endian bytes
Arduino / C: Store the least significant byte first when the protocol requires it.
Arduino / C✓ Tested