void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, STM32!");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}
#include<stdint.h>

#define RCC_Base 0x40021000
#define GPIOD_Base 0x50000C00

uint32