Libraries
Background
tollosLED.c – on-board LEDs
This is a special case of tollosBit for simplified access to on-board LEDs (if any). If any are available they should normally be numbered 1, 2, 3, 4, etc. If only one LED is defined then it is recommended that it should be available as LED 1 even if also available as other indices (e.g., 0).
| Functions | |
|---|---|
| ledQuery | query the state of a LED |
| ledSet | effect an action on a LED |
ledQuery – query the state of a LED
int ledQuery(int num);
num – number of the LED (board-defined)
returns the state of the LED (0=Off or 1=On), or −1 if num is not valid
ledSet – effect an action on a LED
int ledSet(int num, uint action);
num – number of the LED (board-defined)
action – one of LED_ON, _OFF, _INVERT, _QUERY
returns the previous value of the LED (0=Off or 1=Off), or −1 if num or action is invalid