text: #ifndef __shared_H
  #define __shared_H
  
  #include "stm32f0xx_hal.h"
  #include "main.h"
  
  #define HIGH GPIO_PIN_SET
  #define LOW GPIO_PIN_RESET
  
  extern DAC_HandleTypeDef hdac;
  #define stm32_dac_ptr (&hdac)
  
  extern IWDG_HandleTypeDef hiwdg;
  #define stm32_iwdg_ptr (&hiwdg)
  
  extern I2C_HandleTypeDef hi2c2;
  #define stm32_i2c_ptr (&hi2c2)
  
  extern int32_t next_iwdg_kick;
  extern int32_t board_type;
  
  #endif
  