// Sample main.cpp file. Blinks the built-in LED, sends a message out // USART2, and turns on PWM on pin 2. #include #define PWM_PIN 2 void setup() { /* Set up the LED to blink */ pinMode(BOARD_LED_PIN, OUTPUT); /* Turn on PWM on pin PWM_PIN */ pinMode(PWM_PIN, PWM); pwmWrite(PWM_PIN, 0x8000); /* Send a message out USART2 */ Serial2.begin(9600); Serial2.println("Hello world!"); /* Send a message out the usb virtual serial port */ SerialUSB.println("Hello!"); } void loop() { toggleLED(); delay(100); } // Force init to be called *first*, i.e. before static object allocation. // Otherwise, statically allocated objects that need libmaple may fail. __attribute__((constructor)) void premain() { init(); } int main(void) { setup(); while (true) { loop(); } return 0; }