C++ lambdas in TI chip

lambda.ino

#define LED1  PN_1 
#define LED2  PN_0 
#define LED3  PF_4 
#define LED4  PF_0
#define SW1   PJ_0 
#define SW2   PJ_1

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(SW1, INPUT_PULLUP);
}

auto toggle = [](int pin) {
  auto state = digitalRead(pin);
  digitalWrite(pin, !state);
};

void loop() {

  toggle(LED1);
  delay(1000);
  
}