Functions
FLASH Interface configuration functions
STM32F4xx_StdPeriph_Driver | STM32F10x_StdPeriph_Driver | STM32F30x_StdPeriph_Driver » FLASH » FLASH_Private_Functions

FLASH Interface configuration functions. More...

Collaboration diagram for FLASH Interface configuration functions:

Functions

void FLASH_DataCacheCmd (FunctionalState NewState)
 Enables or disables the Data Cache feature. More...
 
void FLASH_DataCacheReset (void)
 Resets the Data Cache. More...
 
void FLASH_HalfCycleAccessCmd (FunctionalState NewState)
 Enables or disables the Half cycle flash access. More...
 
void FLASH_InstructionCacheCmd (FunctionalState NewState)
 Enables or disables the Instruction Cache feature. More...
 
void FLASH_InstructionCacheReset (void)
 Resets the Instruction Cache. More...
 
void FLASH_PrefetchBufferCmd (FunctionalState NewState)
 Enables or disables the Prefetch Buffer. More...
 
void FLASH_SetLatency (uint32_t FLASH_Latency)
 Sets the code latency value. More...
 

Detailed Description

FLASH Interface configuration functions. 

 ===============================================================================
              ##### FLASH Interface configuration functions #####
 ===============================================================================
    [..]
      This group includes the following functions:
      (+) void FLASH_SetLatency(uint32_t FLASH_Latency)
          To correctly read data from FLASH memory, the number of wait states (LATENCY) 
          must be correctly programmed according to the frequency of the CPU clock 
          (HCLK) and the supply voltage of the device.
 +-------------------------------------------------------------------------------------+     
 | Latency       |                HCLK clock frequency (MHz)                           |
 |               |---------------------------------------------------------------------|     
 |               | voltage range  | voltage range  | voltage range   | voltage range   |
 |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   |
 |---------------|----------------|----------------|-----------------|-----------------|              
 |0WS(1CPU cycle)|0 < HCLK <= 30  |0 < HCLK <= 24  |0 < HCLK <= 22   |0 < HCLK <= 20   |
 |---------------|----------------|----------------|-----------------|-----------------|   
 |1WS(2CPU cycle)|30 < HCLK <= 60 |24 < HCLK <= 48 |22 < HCLK <= 44  |20 < HCLK <= 40  | 
 |---------------|----------------|----------------|-----------------|-----------------|   
 |2WS(3CPU cycle)|60 < HCLK <= 90 |48 < HCLK <= 72 |44 < HCLK <= 66  |40 < HCLK <= 60  |
 |---------------|----------------|----------------|-----------------|-----------------| 
 |3WS(4CPU cycle)|90 < HCLK <= 120|72 < HCLK <= 96 |66 < HCLK <= 88  |60 < HCLK <= 80  |
 |---------------|----------------|----------------|-----------------|-----------------| 
 |4WS(5CPU cycle)|120< HCLK <= 150|96 < HCLK <= 120|88 < HCLK <= 110 |80 < HCLK <= 100 |
 |---------------|----------------|----------------|-----------------|-----------------| 
 |5WS(6CPU cycle)|120< HCLK <= 168|120< HCLK <= 144|110 < HCLK <= 132|100 < HCLK <= 120| 
 |---------------|----------------|----------------|-----------------|-----------------| 
 |6WS(7CPU cycle)|      NA        |144< HCLK <= 168|132 < HCLK <= 154|120 < HCLK <= 140| 
 |---------------|----------------|----------------|-----------------|-----------------| 
 |7WS(8CPU cycle)|      NA        |      NA        |154 < HCLK <= 168|140 < HCLK <= 160|
 +-------------------------------------------------------------------------------------+ 
 
 [..]
 +-------------------------------------------------------------------------------------------------------------------+
 |               | voltage range  | voltage range  | voltage range   | voltage range   | voltage range 2.7 V - 3.6 V |
 |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   | with External Vpp = 9V      |
 |---------------|----------------|----------------|-----------------|-----------------|-----------------------------| 
 |Max Parallelism|      x32       |               x16                |       x8        |          x64                |              
 |---------------|----------------|----------------|-----------------|-----------------|-----------------------------|   
 |PSIZE[1:0]     |      10        |               01                 |       00        |           11                |
 +-------------------------------------------------------------------------------------------------------------------+  
      -@- When VOS bit (in PWR_CR register) is reset to 0 , the maximum value of HCLK is 144 MHz.
          You can use PWR_MainRegulatorModeConfig() function to set or reset this bit.
      -@- On STM32F40xx/41xx devices: 
           (++) when VOS = '0', the maximum value of fHCLK = 144MHz. 
           (++) when VOS = '1', the maximum value of fHCLK = 168MHz. 
          [..] 
          On STM32F427x/437x devices:
           (++) when VOS[1:0] = '0x01', the maximum value of fHCLK is 120MHz.
           (++) when VOS[1:0] = '0x10', the maximum value of fHCLK is 144MHz.
           (++) when VOS[1:0] = '0x11', the maximum value of f  is 168MHz  
           You can use PWR_MainRegulatorModeConfig() function to control VOS bits.
                 
      (+) void FLASH_PrefetchBufferCmd(FunctionalState NewState)
      (+) void FLASH_InstructionCacheCmd(FunctionalState NewState)
      (+) void FLASH_DataCacheCmd(FunctionalState NewState)
      (+) void FLASH_InstructionCacheReset(void)
      (+) void FLASH_DataCacheReset(void)
      
    [..]   
      The unlock sequence is not needed for these functions.
 ===============================================================================
            ##### FLASH Interface configuration functions #####
 ===============================================================================
    [..] This group includes the following functions:
         (+) void FLASH_SetLatency(uint32_t FLASH_Latency); 
         (+) void FLASH_HalfCycleAccessCmd(uint32_t FLASH_HalfCycleAccess);     
         (+) void FLASH_PrefetchBufferCmd(FunctionalState NewState);
    [..] The unlock sequence is not needed for these functions.

Function Documentation

void FLASH_DataCacheCmd ( FunctionalState  NewState)

Enables or disables the Data Cache feature.

Parameters
NewStatenew state of the Data Cache. This parameter can be: ENABLE or DISABLE.
Return values
None

Definition at line 241 of file stm32f4xx_flash.c.

void FLASH_DataCacheReset ( void  )

Resets the Data Cache.

Note
This function must be used only when the Data Cache is disabled.
Parameters
None
Return values
None

Definition at line 273 of file stm32f4xx_flash.c.

void FLASH_HalfCycleAccessCmd ( FunctionalState  NewState)

Enables or disables the Half cycle flash access.

Parameters
FLASH_HalfCycleAccessspecifies the FLASH Half cycle Access mode. This parameter can be one of the following values:
  • FLASH_HalfCycleAccess_Enable: FLASH Half Cycle Enable
  • FLASH_HalfCycleAccess_Disable: FLASH Half Cycle Disable
Return values
None

Definition at line 156 of file stm32f30x_flash.c.

void FLASH_InstructionCacheCmd ( FunctionalState  NewState)

Enables or disables the Instruction Cache feature.

Parameters
NewStatenew state of the Instruction Cache. This parameter can be: ENABLE or DISABLE.
Return values
None

Definition at line 220 of file stm32f4xx_flash.c.

void FLASH_InstructionCacheReset ( void  )

Resets the Instruction Cache.

Note
This function must be used only when the Instruction Cache is disabled.
Parameters
None
Return values
None

Definition at line 262 of file stm32f4xx_flash.c.

void FLASH_PrefetchBufferCmd ( FunctionalState  NewState)

Enables or disables the Prefetch Buffer.

Parameters
NewStatenew state of the Prefetch Buffer. This parameter can be: ENABLE or DISABLE.
Return values
None

Definition at line 198 of file stm32f4xx_flash.c.

void FLASH_SetLatency ( uint32_t  FLASH_Latency)

Sets the code latency value.

Parameters
FLASH_Latencyspecifies the FLASH Latency value. This parameter can be one of the following values:
  • FLASH_Latency_0: FLASH Zero Latency cycle
  • FLASH_Latency_1: FLASH One Latency cycle
  • FLASH_Latency_2: FLASH Two Latency cycles
  • FLASH_Latency_3: FLASH Three Latency cycles
  • FLASH_Latency_4: FLASH Four Latency cycles
  • FLASH_Latency_5: FLASH Five Latency cycles
  • FLASH_Latency_6: FLASH Six Latency cycles
  • FLASH_Latency_7: FLASH Seven Latency cycles For STM32F40xx/41xx and STM32F427x/437x devices this parameter can be a value between FLASH_Latency_0 and FLASH_Latency_7.
Return values
None
Parameters
FLASH_Latencyspecifies the FLASH Latency value. This parameter can be one of the following values:
  • FLASH_Latency_0: FLASH Zero Latency cycle
  • FLASH_Latency_1: FLASH One Latency cycle
  • FLASH_Latency_2: FLASH Two Latency cycles
Return values
None

Definition at line 183 of file stm32f4xx_flash.c.


rosflight_firmware
Author(s): Daniel Koch , James Jackson
autogenerated on Thu Apr 15 2021 05:07:55