#include "Arduino.h" extern "C" void app() { printf("hello Flipper!\n"); GpioPin red_led = {LED_RED_GPIO_Port, LED_RED_Pin}; app_gpio_init(red_led, GpioModeOutput); while(1) { delay(100); app_gpio_write(red_led, true); delay(100); app_gpio_write(red_led, false); } }