Resolved! Code stop running at NVIC_EnableIRQ
#define HWREG(x) (*((volatile uint32_t *)(x))) int dataFromRegister = 0; void EXTI9_5_IRQHandler(); void GPIOH_Port15_Toggle(); void GPIOH_Init(); void GPIOK_Port5_Toggle(); void GPIOK_Init(); void SystemCLCKInit(); void setup() { // put your se...