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Earle F. Philhower, III 8c37601614 Fix Ticker callback casting. (#6282)
Fixes errors seen in #6281 and adds a slight test case to the examples
to ensure no compiler errors.
2019-07-10 23:15:10 -04:00

42 lines
877 B
C++

/*
Passing paramters to Ticker callbacks
Apart from void(void) functions, the Ticker library supports
functions taking one argument. This argument's size has to be less or
equal to 4 bytes (so char, short, int, float, void*, char* types will do).
This sample runs two tickers that both call one callback function,
but with different arguments.
The built-in LED will be pulsing.
*/
#include <Ticker.h>
Ticker tickerSetHigh;
Ticker tickerSetAnalog;
Ticker tickerSetLow;
void setPin(int state) {
digitalWrite(LED_BUILTIN, state);
}
void setPinChar(char state) {
digitalWrite(LED_BUILTIN, state);
}
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(1, LOW);
// every 25 ms, call setPin(0)
tickerSetLow.attach_ms(25, setPin, 0);
// every 26 ms, call setPinChar(1)
tickerSetHigh.attach_ms(26, setPinChar, (char)1);
}
void loop() {
}