Read an input switch on an Arduino pin and determine the press status
- Initialize the switch ```c++ Button pb1(pin, button_state, read_type) ``` Type|Parameter|Description ---|---|--- int|pin| Pin number the switch is connected to. int|button_state| Set the initial state of the pin (HIGH or LOW). Default HIGH. boolean|read_type | If true, switch will read long presses.- Read switch status
#include <Button.h>
#define SW1 5
Button pb1 (SW1, HIGH, false);
setup(){
}
loop() {
//Read switch here. Create function to read multiple switches if necessary
pb1.read_switch();
if (pb1.get_long()) {
Serial.println("long press");
} else if (pb1.get_short()) {
Serial.println("short press");
}
//Reset switch here to clear values
pb1.reset();
}This reads any switch state changes. Call get_long() to get the boolean value if the switch is held down (500ms default) and get_short() to get the boolean value if the switch has been pressed down.
If read_type == true, short presses will only be read on-release instead of on-press.
- Read multiple switch press
To read multiple switches, see example:
#include <Button.h>
#define SW1 5
#define SW2 6
Button pb1 (SW1, HIGH, false);
Button pb2 (SW2, HIGH, false);
Button arr_pb[] = {pb1, pb2); //Add switches into an array
setup(){
Serial.begin(9600);
}
loop() {
//Read switch here. Create function to read multiple switches if necessary
read_switches();
if (arr_pb[0].get_short() && arr_pb[1].get_short()){
Serial.println("SW1 & SW2 pressed");
} else if (arr_pb[0].get_short()){
Serial.println("SW1 pressed");
} else if (arr_pb[1].get_short()){
Serial.println("SW2 pressed");
}
}
// To read the status of multiple switches/
void read_switches(){
//Reset all switch values before reading
reset_switches();
for (int j = 0; j < 1000; j++) {
for (int i = 0; i < 5; i++){
arr_pb[i].read_switch();
delayMicroseconds(8);
}
for (int i = 4; i >= 0; i--){
arr_pb[i].read_switch();
delayMicroseconds(8);
}
}
}
// Reset all switch values
void reset_switches(){
for (int i = 0; i < 5; i++){
arr_pb[i].reset();
}
}