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Chapter 14 Relay & Motor
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}
//if changing-state of the button last beyond the time we set,we considered that
//the current button state is an effective change rather than a buffeting
if
(
millis
()
-
lastChangeTime
>
captureTime
){
//if button state is changed ,update the data.
if
(
reading
!=
buttonState
){
buttonState
=
reading
;
//if the state is low ,the action is pressing
if
(
buttonState
==
LOW
){
printf
(
"Button is pressed!\n"
);
relayState
=
!
relayState
;
if
(
relayState
){
printf
(
"turn on relay ...\n"
);
}
else
{
printf
(
"turn off relay ...\n"
);
}
}
//if the state is high ,the action is releasing
else
{
printf
(
"Button is released!\n"
);
}
}
}
digitalWrite
(
relayPin
,
relayState
);
lastbuttonState
=
reading
;
}
return
0
;
}
The code is in the same logic as TableLamp code above.
Summary of Contents for Ultimate Starter Kit
Page 1: ...Free your innovation Freenove is an open source electronics platform www freenove com ...
Page 117: ...117 Chapter 9 Potentiometer RGBLED www freenove com support freenove com Hardware connection ...
Page 155: ...155 Chapter 14 Relay Motor www freenove com support freenove com Hardware connection OFF 3 3V ...
Page 173: ...173 Chapter 16 Stepping Motor www freenove com support freenove com Hardware connection ...
Page 239: ...239 Chapter 22 Matrix Keypad www freenove com support freenove com Circuit Schematic diagram ...
Page 240: ...Chapter 22 Matrix Keypad 240 www freenove com support freenove com Hardware connection ...
