Changeset - e1ff9c2d3789
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Ethan Zonca - 10 years ago 2014-09-25 21:17:44
ez@ethanzonca.com
Initial attempt of minimal eeprom lib, doesn't seem to save properly.
1 file changed with 107 insertions and 35 deletions:
main.c
107
35
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main.c
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@@ -328,70 +328,142 @@ uint16_t k_d = 1;*/
 
 
#define EEPROM_BASE_ADDR    0x08080000    
 
#define EEPROM_BYTE_SIZE    0x0FFF  
 
/*
 
uint32_t EEPROM_ReadWord(uint16_t Addr)  
 
{  
 
    uint32 *wAddr;  
 
    wAddr=(uint32 *)(EEPROM_BASE_ADDR+Addr);  
 
 
void Minimal_EEPROM_Unlock(void)
 
{
 
  if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
 
  {
 
    /* Unlocking the Data memory and FLASH_PECR register access*/
 
    FLASH->PEKEYR = FLASH_PEKEY1;
 
    FLASH->PEKEYR = FLASH_PEKEY2;
 
  }
 
}
 
 
void Minimal_EEPROM_Lock(void)
 
{
 
  /* Set the PELOCK Bit to lock the data memory and FLASH_PECR register access */
 
  FLASH->PECR |= FLASH_PECR_PELOCK;
 
}
 
 
FLASH_Status Minimal_FLASH_GetStatus(void)
 
{
 
  FLASH_Status FLASHstatus = FLASH_COMPLETE;
 
 
    uint32 res;
 
    res = *wAddr++;
 
  if((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY)
 
  {
 
    FLASHstatus = FLASH_BUSY;
 
  }
 
  else
 
  {
 
    if((FLASH->SR & (uint32_t)FLASH_FLAG_WRPERR)!= (uint32_t)0x00)
 
    {
 
      FLASHstatus = FLASH_ERROR_WRP;
 
    }
 
    else
 
    {
 
      if((FLASH->SR & (uint32_t)0x1E00) != (uint32_t)0x00)
 
      {
 
        FLASHstatus = FLASH_ERROR_PROGRAM;
 
      }
 
      else
 
      {
 
        FLASHstatus = FLASH_COMPLETE;
 
      }
 
    }
 
  }
 
  /* Return the FLASH Status */
 
  return FLASHstatus;
 
}
 
 
FLASH_Status Minimal_FLASH_WaitForLastOperation(uint32_t Timeout)
 
{
 
  __IO FLASH_Status status = FLASH_COMPLETE;
 
 
  /* Check for the FLASH Status */
 
  status = Minimal_FLASH_GetStatus();
 
 
    while(Length--){  
 
        *Buffer++=*wAddr++;  
 
    }     
 
} 
 
*/
 
  /* Wait for a FLASH operation to complete or a TIMEOUT to occur */
 
  while((status == FLASH_BUSY) && (Timeout != 0x00))
 
  {
 
    status = Minimal_FLASH_GetStatus();
 
    Timeout--;
 
  }
 
 
  if(Timeout == 0x00 )
 
  {
 
    status = FLASH_TIMEOUT;
 
  }
 
  /* Return the operation status */
 
  return status;
 
}
 
 
 
void Minimal_EEPROM_ProgramWord(uint32_t Address, uint32_t Data)
 
{
 
  // Wait for last operation to be completed 
 
  FLASH_Status status = FLASH_COMPLETE;
 
  status = Minimal_FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
 
 
  if(status == FLASH_COMPLETE)
 
  {
 
    *(__IO uint32_t *)Address = Data;
 
 
    // Wait for last operation to be completed 
 
    status = Minimal_FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
 
  }
 
  // Return the Write Status 
 
  return status;
 
}
 
 
void save_settings()
 
{
 
    DATA_EEPROM_Unlock();
 
   Minimal_EEPROM_Unlock();
 
    // Try programming a word at an address divisible by 4
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BOOTTOBREW, boottobrew);
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_WINDUP_GUARD, windup_guard);
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_P, k_p);
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_I, k_i);
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_D, k_d);
 
    DATA_EEPROM_Lock();
 
    
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BOOTTOBREW, boottobrew);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_WINDUP_GUARD, windup_guard);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_P, k_p);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_I, k_i);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_K_D, k_d);
 
    Minimal_EEPROM_Lock();
 
}
 
 
void save_setpoints()
 
{
 
    DATA_EEPROM_Unlock();
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP, setpoint_brew);
 
    DATA_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP, setpoint_steam); 
 
    DATA_EEPROM_Lock();
 
 
    Minimal_EEPROM_Unlock();
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP, setpoint_brew);
 
    Minimal_EEPROM_ProgramWord(EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP, setpoint_steam); 
 
    Minimal_EEPROM_Lock();
 
 
}
 
 
 
// TODO: Save/restore temperature setpoint settings
 
void restore_settings()
 
{
 
 
    DATA_EEPROM_Unlock();
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    Minimal_EEPROM_Unlock();
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    boottobrew = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_BOOTTOBREW);
 
    
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    windup_guard = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_WINDUP_GUARD);
 
    
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_p = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_K_P);
 
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_i = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_K_I);
 
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    k_d = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_K_D);
 
    
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    setpoint_brew = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_BREWTEMP);
 
 
    while(FLASH_GetStatus()==FLASH_BUSY);
 
    while(Minimal_FLASH_GetStatus()==FLASH_BUSY);
 
    setpoint_steam = (*(__IO uint32_t*)EEPROM_BASE_ADDR + EEPROM_ADDR_STEAMTEMP);    
 
    
 
    DATA_EEPROM_Lock();
 
 
    Minimal_EEPROM_Lock();
 
}
 
 
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