multiple, it was working with this other code that I was using before that only allowed me to bind then to function keys
#define BUTTON_KEY1 KEY_F13
#define BUTTON_KEY2 KEY_F14
#define BUTTON_KEY3 KEY_F15
#define BUTTON_KEY4 KEY_F16
#define BUTTON_KEY5 KEY_F17
#define BUTTON_KEY6 KEY_F18
#define BUTTON_KEY7 KEY_F19
#define BUTTON_KEY8 KEY_F20
#define BUTTON_KEY9 KEY_F24
#define BUTTON_KEY10 KEY_F23
#define BUTTON_KEY11 KEY_F22
#define BUTTON_KEY12 KEY_F21
#define BUTTON_PIN1 2
#define BUTTON_PIN2 3
#define BUTTON_PIN3 4
#define BUTTON_PIN4 5
#define BUTTON_PIN5 6
#define BUTTON_PIN6 7
#define BUTTON_PIN7 8
#define BUTTON_PIN8 9
#define BUTTON_PIN9 10
#define BUTTON_PIN10 16
#define BUTTON_PIN11 14
#define BUTTON_PIN12 15
// ---------------------------------
#include "Keyboard.h"
class button {
public:
const char key;
const uint8_t pin;
button(uint8_t k, uint8_t p) : key(k), pin(p){}
void press(boolean state){
if(state == pressed || (millis() - lastPressed <= debounceTime)){
return; // Nothing to see here, folks
}
lastPressed = millis();
state ? Keyboard.press(key) : Keyboard.release(key);
pressed = state;
}
void update(){
press(!digitalRead(pin));
}
private:
const unsigned long debounceTime = 30;
unsigned long lastPressed = 0;
boolean pressed = 0;
} ;
button buttons[] = {
{BUTTON_KEY1, BUTTON_PIN1},
{BUTTON_KEY2, BUTTON_PIN2},
{BUTTON_KEY3, BUTTON_PIN3},
{BUTTON_KEY4, BUTTON_PIN4},
{BUTTON_KEY5, BUTTON_PIN5},
{BUTTON_KEY6, BUTTON_PIN6},
{BUTTON_KEY7, BUTTON_PIN7},
{BUTTON_KEY8, BUTTON_PIN8},
{BUTTON_KEY9, BUTTON_PIN9},
{BUTTON_KEY10, BUTTON_PIN10},
{BUTTON_KEY11, BUTTON_PIN11},
{BUTTON_KEY12, BUTTON_PIN12},
};
const uint8_t NumButtons = sizeof(buttons) / sizeof(button);
const uint8_t ledPin = 17;
void setup() {
pinMode(1, INPUT_PULLUP);
if(!digitalRead(1)){
failsafe();
}
// Set LEDs Off. Active low.
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, HIGH);
TXLED0;
for(int i = 0; i < NumButtons; i++){
pinMode(buttons[i].pin, INPUT_PULLUP);
}
}
void loop() {
for(int i = 0; i < NumButtons; i++){
buttons[i].update();
}
}
void failsafe(){
for(;;){}
}