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 105 insertions and 33 deletions:
main.c
105
33
0 comments (0 inline, 0 general)
main.c
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@@ -283,160 +283,232 @@ void process()
 
}
 
 
void draw_setpoint() {
 
    char tempstr[3];
 
    itoa_fp(temp, temp_frac, tempstr);
 
    //ssd1306_DrawString("        ", 3, 40);
 
    ssd1306_DrawString(tempstr, 3, 40);
 
    ssd1306_DrawString("-> ", 3, 80);
 
    itoa(setpoint, tempstr);
 
    ssd1306_DrawString("    ", 3, 95);
 
    ssd1306_DrawString(tempstr, 3, 95);
 
}
 
 
uint8_t goto_mode = 2;
 
 
// State machine
 
uint8_t sw_btn_last = 0;
 
uint8_t sw_up_last = 0;
 
uint8_t sw_down_last = 0;
 
uint8_t sw_left_last = 0;
 
uint8_t sw_right_last = 0;
 
 
#define SW_BTN_PRESSED (sw_btn_last == 0 && sw_btn == 1) // rising edge on buttonpress
 
#define SW_UP_PRESSED (sw_up_last == 0 && sw_up == 1)
 
#define SW_DOWN_PRESSED (sw_down_last == 0 && sw_down == 1)
 
#define SW_LEFT_PRESSED (sw_left_last == 0 && sw_left == 1)
 
#define SW_RIGHT_PRESSED (sw_right_last == 0 && sw_right == 1)
 
 
/*
 
 * uint8_t boottobrew = 0;
 
#define WINDUP_GUARD_GAIN 100
 
uint16_t windup_guard = WINDUP_GUARD_GAIN;
 
uint16_t k_p = 1;
 
uint16_t k_i = 1;
 
uint16_t k_d = 1;*/
 
 
#define EEPROM_ADDR_WINDUP_GUARD 	0x001C
 
#define EEPROM_ADDR_BOOTTOBREW		0x0020
 
#define EEPROM_ADDR_K_P			0x0024
 
#define EEPROM_ADDR_K_I			0x0028
 
#define EEPROM_ADDR_K_D			0x002C
 
 
#define EEPROM_ADDR_BREWTEMP		0x0030
 
#define EEPROM_ADDR_STEAMTEMP		0x0034
 
 
 
#define EEPROM_BASE_ADDR    0x08080000    
 
#define EEPROM_BYTE_SIZE    0x0FFF  
 
/*
 
uint32_t EEPROM_ReadWord(uint16_t Addr)  
 
 
void Minimal_EEPROM_Unlock(void)
 
{
 
  if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET)
 
{  
 
    uint32 *wAddr;  
 
    wAddr=(uint32 *)(EEPROM_BASE_ADDR+Addr);  
 
    /* 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++;
 
 
    while(Length--){  
 
        *Buffer++=*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();
 
 
  /* 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();
 
}
 
 
 
void user_input(uint16_t* to_modify)
 
{
 
    if(CHANGE_ELAPSED) {
 
 
        // TODO: Make function that takes reference to a var and increase/decreases it based on buttonpress
 
        if(!GPIO_ReadInputDataBit(SW_UP) ) {
 
            CHANGE_RESET;
 
            (*to_modify)++;
 
        }
 
        else if(!GPIO_ReadInputDataBit(SW_DOWN) && (*to_modify) > 0) {
 
            CHANGE_RESET;
 
            (*to_modify)--;
 
        }
 
 
    }
 
 
}
 
 
void machine()
 
{
 
    uint8_t last_state = state;
 
 
    uint8_t sw_btn = !GPIO_ReadInputDataBit(SW_BTN);
 
    uint8_t sw_up = !GPIO_ReadInputDataBit(SW_UP);
 
    uint8_t sw_down = !GPIO_ReadInputDataBit(SW_DOWN);
 
    uint8_t sw_left = !GPIO_ReadInputDataBit(SW_LEFT);
 
    uint8_t sw_right = !GPIO_ReadInputDataBit(SW_RIGHT);
 
 
    switch(state)
 
    {
 
        // Idle state
 
        case STATE_IDLE:
 
        {
 
            // Write text to OLED
 
            // [ therm :: idle ]
 
            ssd1306_DrawString("therm :: idle ", 0, 40);
 
            pid_enabled = 0;
 
 
            char tempstr[6];
 
            itoa_fp(temp, temp_frac, tempstr);
 
            ssd1306_DrawString("Temp: ", 3, 40);
 
            ssd1306_DrawString("    ", 3, 72);
 
            ssd1306_DrawString(tempstr, 3, 72);
 
 
            ssd1306_drawlogo();
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