#include "main.h"
#include "stm32f4xx_hal.h"
#include "user_flash.h"
uint32_t Save_Config_Flash_Addr = 0x0801F800; 

uint8_t save_config(uint8_t config)
{
	uint8_t status = HAL_ERROR;
	FLASH_EraseInitTypeDef My_Flash; 
	
//	__set_PRIMASK(1);
	
	HAL_FLASH_Unlock();             
            
	My_Flash.TypeErase = FLASH_TYPEERASE_PAGES; 
	My_Flash.PageAddress = Save_Config_Flash_Addr; 
	My_Flash.NbPages = 1;                       
            
	uint32_t PageError = 0;                  
	status = HAL_FLASHEx_Erase(&My_Flash, &PageError);  
  if(status != HAL_OK)
	{
		return status;
	}
	uint16_t Write_Flash_Data = config;
	status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, Save_Config_Flash_Addr, Write_Flash_Data); 
	HAL_FLASH_Lock(); 
	
//	__set_PRIMASK(0);
	
	return status;
	
}

uint8_t read_config(void)
{
	uint8_t data = *(__IO uint8_t*)( Save_Config_Flash_Addr ); 
  return data;
}