Forum: Mikrocontroller und Digitale Elektronik STM32F427 SDRAM


STM32F427 SDRAM
von SakulRelda (Gast)

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Hallo Leute,

ich versuche auf dem STM32F427 den SDRAM in Betrieb zu nehmen. Jedoch 
funktioniert es nicht - könnt ihr vielleicht mal über meinen 
Initialisierung schauen?

Danke euch ;)

1
int main(void)

2
{

3
    /* STM32F4xx HAL library initialization:

4
         - Configure the Flash prefetch, instruction and Data caches

5
         - Configure the Systick to generate an interrupt each 1 msec

6
         - Set NVIC Group Priority to 4

7
         - Global MSP (MCU Support Package) initialization

8
     */

9
    HAL_Init(); //OK

10
11
    //Configure the System clock to have a frequency of 180 MHz

12
    SystemClock_Config();  

13
14
    /*##-1- Configure the SDRAM device*/

15
    /* SDRAM device configuration */ 

16
    hsdram.Instance = FMC_SDRAM_DEVICE;

17
    SDRAM_Timing.LoadToActiveDelay    = 2;

18
    SDRAM_Timing.ExitSelfRefreshDelay = 7;

19
    SDRAM_Timing.SelfRefreshTime      = 4;

20
    SDRAM_Timing.RowCycleDelay        = 7;

21
    SDRAM_Timing.WriteRecoveryTime    = 2;

22
    SDRAM_Timing.RPDelay              = 2;

23
    SDRAM_Timing.RCDDelay             = 2;

24
25
    hsdram.Init.SDBank             = FMC_SDRAM_BANK2;

26
    hsdram.Init.ColumnBitsNumber   = FMC_SDRAM_COLUMN_BITS_NUM_8;

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    hsdram.Init.RowBitsNumber      = FMC_SDRAM_ROW_BITS_NUM_12;

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    hsdram.Init.MemoryDataWidth    = FMC_SDRAM_MEM_BUS_WIDTH_32;

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    hsdram.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;

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    hsdram.Init.CASLatency         = FMC_SDRAM_CAS_LATENCY_3;

31
    hsdram.Init.WriteProtection    = FMC_SDRAM_WRITE_PROTECTION_DISABLE;

32
    hsdram.Init.SDClockPeriod      = FMC_SDRAM_CLOCK_PERIOD_3;

33
    hsdram.Init.ReadBurst          = FMC_SDRAM_RBURST_DISABLE;

34
    hsdram.Init.ReadPipeDelay      = FMC_SDRAM_RPIPE_DELAY_1;

35
36
    

37
    if(HAL_SDRAM_Init(&hsdram,&SDRAM_Timing)!=HAL_OK){

38
      Error_Handler();

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    }

40
    

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    SDRAM_Initialization_Sequence(&hsdram,&cmd);

42
    

43
44
    for(i=0;i<100;i++){

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      buffi[i]=i;

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    }

47
    

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    /* Write data to the SDRAM memory */

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    for (i = 0; i < 100; i++)

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    {

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      *(__IO uint32_t*) (SDRAM_BANK_ADDR + 4*i) = buffi[i];

52
    } 

53
54
}


Letzte Möglichkeit für einen Fehler wäre hier:

1
static void SDRAM_Initialization_Sequence(SDRAM_HandleTypeDef *hsdram, FMC_SDRAM_CommandTypeDef *Command)

2
{

3
  __IO uint32_t tmpmrd =0;

4
  /* Step 3:  Configure a clock configuration enable command */

5
  Command->CommandMode        = FMC_SDRAM_CMD_CLK_ENABLE;

6
  Command->CommandTarget      = FMC_SDRAM_CMD_TARGET_BANK2;

7
  Command->AutoRefreshNumber    = 1;

8
  Command->ModeRegisterDefinition = 0;

9
10
  /* Send the command */

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  HAL_SDRAM_SendCommand(hsdram, Command, 0x1000);

12
13
  /* Step 4: Insert 100 ms delay */

14
  HAL_Delay(100);

15
    

16
  /* Step 5: Configure a PALL (precharge all) command */ 

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  Command->CommandMode        = FMC_SDRAM_CMD_PALL;

18
  Command->CommandTarget        = FMC_SDRAM_CMD_TARGET_BANK2;

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  Command->AutoRefreshNumber    = 1;

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  Command->ModeRegisterDefinition = 0;

21
22
  /* Send the command */

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  HAL_SDRAM_SendCommand(hsdram, Command, 0x1000);  

24
  

25
  /* Step 6 : Configure a Auto-Refresh command */ 

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  Command->CommandMode        = FMC_SDRAM_CMD_AUTOREFRESH_MODE;

27
  Command->CommandTarget      = FMC_SDRAM_CMD_TARGET_BANK2;

28
  Command->AutoRefreshNumber    = 4;

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  Command->ModeRegisterDefinition = 0;

30
31
  /* Send the command */

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  HAL_SDRAM_SendCommand(hsdram, Command, 0x1000);

33
  

34
  /* Step 7: Program the external memory mode register */

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  tmpmrd = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_2          |

36
                     SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL   |

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                     SDRAM_MODEREG_CAS_LATENCY_3           |

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                     SDRAM_MODEREG_OPERATING_MODE_STANDARD |

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                     SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;

40
  

41
  Command->CommandMode = FMC_SDRAM_CMD_LOAD_MODE;

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  Command->CommandTarget      = FMC_SDRAM_CMD_TARGET_BANK2;

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  Command->AutoRefreshNumber    = 1;

44
  Command->ModeRegisterDefinition = tmpmrd;

45
46
  /* Send the command */

47
  HAL_SDRAM_SendCommand(hsdram, Command, 0x1000);

48
  

49
  /* Step 8: Set the refresh rate counter */

50
  /* (15.62 us x Freq) - 20 */

51
  /* Set the device refresh counter */

52
  HAL_SDRAM_ProgramRefreshRate(hsdram, REFRESH_COUNT); 

53
}


Hier seht ihr meine Msp-Init Methode - ist hier vielleicht was falsch?
1
__weak void HAL_SDRAM_MspInit(SDRAM_HandleTypeDef *hsdram)

2
{

3
  /* NOTE: This function Should not be modified, when the callback is needed,

4
            the HAL_SDRAM_MspInit could be implemented in the user file

5
   */ 

6
  GPIO_InitTypeDef  GPIO_Init_Structure;

7
8
  /*##-1- Enable peripherals and GPIO Clocks #################################*/

9
  /* Enable GPIO clocks */

10
  __HAL_RCC_GPIOD_CLK_ENABLE();

11
  __HAL_RCC_GPIOE_CLK_ENABLE();

12
  __HAL_RCC_GPIOF_CLK_ENABLE();

13
  __HAL_RCC_GPIOG_CLK_ENABLE();

14
  __HAL_RCC_GPIOH_CLK_ENABLE();

15
  __HAL_RCC_GPIOI_CLK_ENABLE();

16
  __HAL_RCC_FMC_CLK_ENABLE();

17
  

18
  /*##-2- Configure peripheral GPIO ##########################################*/  

19
/*-- GPIOs Configuration -----------------------------------------------------*/

20
/*

21
 +-------------------+--------------------+--------------------+--------------------+

22
 +                       SDRAM pins assignment                                      +

23
 +-------------------+--------------------+--------------------+--------------------+

24
 | PD0  <-> FMC_D2  +OK | PE0  <-> FMC_NBL0 +OK | PF0  <-> FMC_A0  +ok    | PG0  <-> FMC_A10   +ok|

25
 | PD1  <-> FMC_D3  +OK | PE1  <-> FMC_NBL1 +OK | PF1  <-> FMC_A1  +ok    | PG1  <-> FMC_A11   +ok|

26
 | PD8  <-> FMC_D13 +OK | PE7  <-> FMC_D4  +ok  | PF2  <-> FMC_A2  +ok    | PG8  <-> FMC_SDCLK +ok|

27
 | PD9  <-> FMC_D14 +OK | PE8  <-> FMC_D5  +ok  | PF3  <-> FMC_A3  +ok    | PG15 <-> FMC_NCAS  +ok|

28
 | PD10 <-> FMC_D15 +OK | PE9  <-> FMC_D6  +ok  | PF4  <-> FMC_A4  +ok    | PG4 <-> FMC_BA0    +ok|

29
 | PD14 <-> FMC_D0  +OK | PE10 <-> FMC_D7  +ok  | PF5  <-> FMC_A5  +ok    | PG5 <-> FMC_BA1    +ok|

30
 | PD15 <-> FMC_D1  +OK | PE11 <-> FMC_D8  +ok  | PF11 <-> FMC_NRAS +ok   | 

31
 +----------------------| PE12 <-> FMC_D9  +ok    | PF12 <-> FMC_A6   +ok | 

32
                        | PE13 <-> FMC_D10 +ok    | PF13 <-> FMC_A7   +ok |    

33
                        | PE14 <-> FMC_D11 +ok    | PF14 <-> FMC_A8   +ok |

34
                        | PE15 <-> FMC_D12 +ok    | PF15 <-> FMC_A9   +ok |

35
 +----------------------+-------------------------+-----------------------+

36
37
 

38
 //NEW INIT STUFF

39
  +--------------------+-------------------------+

40
 | PH2  <-> FMC_SDCKE0 | PI0  <-> FMC_D24

41
 | PH3  <-> FMC_SDNE0  | PI1  <-> FMC_D25

42
 | PH5  <-> FMC_SDNWE  | PI2  <-> FMC_D26

43
 | PH8  <-> FMC_D16    | PI3  <-> FMC_D27

44
 | PH9  <-> FMC_D17    | PI4  <-> FMC_SDNDQM2

45
 | PH10 <-> FMC_D18    | PI5  <-> FMC_SDNDQM3

46
 | PH11 <-> FMC_D19    | PI6  <-> FMC_D28

47
 | PH12 <-> FMC_D20    | PI7  <-> FMC_D29

48
 | PH13 <-> FMC_D21    | PI9  <-> FMC_D30

49
 | PH14 <-> FMC_D22    | PI10 <-> FMC_D31

50
 | PH15 <-> FMC_D23    |

51
   +--------------------+-------------------------+ 

52
*/

53
  

54
  /* Common GPIO configuration */

55
  GPIO_Init_Structure.Mode  = GPIO_MODE_AF_PP;

56
  GPIO_Init_Structure.Speed = GPIO_SPEED_FAST;

57
  GPIO_Init_Structure.Pull  = GPIO_NOPULL;

58
  GPIO_Init_Structure.Alternate = GPIO_AF12_FMC;

59
60
  /* GPIOB configuration */

61
//  GPIO_Init_Structure.Pin = GPIO_PIN_5 | GPIO_PIN_6;

62
//  HAL_GPIO_Init(GPIOB, &GPIO_Init_Structure);  

63
64
  /* GPIOC configuration */

65
//  GPIO_Init_Structure.Pin = GPIO_PIN_0;      

66
//  HAL_GPIO_Init(GPIOC, &GPIO_Init_Structure);  

67
  

68
  /* GPIOD configuration */

69
  GPIO_Init_Structure.Pin = GPIO_PIN_0 | GPIO_PIN_1  | GPIO_PIN_8 |

70
                                GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 |

71
                                GPIO_PIN_15;

72
  HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);

73
74
  /* GPIOE configuration */

75
  GPIO_Init_Structure.Pin = GPIO_PIN_0  | GPIO_PIN_1  | GPIO_PIN_7 |

76
                                GPIO_PIN_8  | GPIO_PIN_9  | GPIO_PIN_10 |

77
                                GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 |

78
                                GPIO_PIN_14 | GPIO_PIN_15;

79
  HAL_GPIO_Init(GPIOE, &GPIO_Init_Structure);

80
81
  /* GPIOF configuration */

82
  GPIO_Init_Structure.Pin = GPIO_PIN_0  | GPIO_PIN_1 | GPIO_PIN_2 | 

83
                                GPIO_PIN_3  | GPIO_PIN_4 | GPIO_PIN_5 |

84
                                GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 |

85
                                GPIO_PIN_14 | GPIO_PIN_15;      

86
  HAL_GPIO_Init(GPIOF, &GPIO_Init_Structure);

87
88
  /* GPIOG configuration */

89
  GPIO_Init_Structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 |

90
                                GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15;

91
  HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);   

92
  

93
  /*GPIOH configuration */

94
  GPIO_Init_Structure.Pin = GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_9 | 

95
                              GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;

96
  HAL_GPIO_Init(GPIOH,&GPIO_Init_Structure);

97
  

98
  /*GPIOI configuration */

99
  GPIO_Init_Structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 |

100
                              GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_9 | GPIO_PIN_10;

101
  HAL_GPIO_Init(GPIOI, &GPIO_Init_Structure);

102
  

103
  

104
}


Oder ist aber meine Clock falsch gesetzt?
1
static void SystemClock_Config(void)

2
{

3
    RCC_ClkInitTypeDef RCC_ClkInitStruct; //OK

4
    RCC_OscInitTypeDef RCC_OscInitStruct; //OK

5
6
    /* Enable Power Control clock */

7
    __PWR_CLK_ENABLE(); //OK

8
  

9
    /* The voltage scaling allows optimizing the power consumption when the device is

10
     clocked below the maximum system frequency, to update the voltage scaling value 

11
     regarding system frequency refer to product datasheet.  */

12
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); //OK

13
14
    /* Enable HSE Oscillator and activate PLL with HSE as source */

15
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;  //OK

16
    RCC_OscInitStruct.HSEState = RCC_HSE_ON; //OK 

17
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; //OK

18
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;  //OK

19
    RCC_OscInitStruct.PLL.PLLM = 16; // NOT -> WHY 16? -> Demoboard is 8

20
    RCC_OscInitStruct.PLL.PLLN = 360; //OK

21
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; //OK

22
    RCC_OscInitStruct.PLL.PLLQ = 7; //OK

23
    if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) //OK

24
    {

25
        /* Initialization Error */

26
        Error_Handler();

27
    }

28
29
30
    if(HAL_PWREx_ActivateOverDrive() != HAL_OK) //OK

31
    {

32
        /* Initialization Error */

33
        Error_Handler();

34
    }

35
36
    /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2

37
     clocks dividers */

38
    RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); //OK

39
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; //OK

40
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; //OK

41
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; //OK

42
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; //OK

43
    if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK) //OK 

44
    {

45
        /* Initialization Error */

46
        Error_Handler();

47
    }

48
}



Ich hoffe ihr könnt mir weiter helfen. Ich habe als SDRAM folgenden auf 
dem Board:

IS42S32400F


-> Danke schonmal.

  


  




  

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