diff options
Diffstat (limited to 'demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c')
| -rw-r--r-- | demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c | 874 |
1 files changed, 0 insertions, 874 deletions
diff --git a/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c b/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c deleted file mode 100644 index 22ee18000..000000000 --- a/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c +++ /dev/null @@ -1,874 +0,0 @@ -/**
- ******************************************************************************
- * @file stm32f10x_flash.c
- * @author MCD Application Team
- * @version V3.1.0
- * @date 06/19/2009
- * @brief This file provides all the FLASH firmware functions.
- ******************************************************************************
- * @copy
- *
- * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
- * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
- * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
- * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
- * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
- * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
- *
- * <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x_flash.h"
-
-/** @addtogroup STM32F10x_StdPeriph_Driver
- * @{
- */
-
-/** @defgroup FLASH
- * @brief FLASH driver modules
- * @{
- */
-
-/** @defgroup FLASH_Private_TypesDefinitions
- * @{
- */
-
-/**
- * @}
- */
-
-/** @defgroup FLASH_Private_Defines
- * @{
- */
-
-/* Flash Access Control Register bits */
-#define ACR_LATENCY_Mask ((uint32_t)0x00000038)
-#define ACR_HLFCYA_Mask ((uint32_t)0xFFFFFFF7)
-#define ACR_PRFTBE_Mask ((uint32_t)0xFFFFFFEF)
-
-/* Flash Access Control Register bits */
-#define ACR_PRFTBS_Mask ((uint32_t)0x00000020)
-
-/* Flash Control Register bits */
-#define CR_PG_Set ((uint32_t)0x00000001)
-#define CR_PG_Reset ((uint32_t)0x00001FFE)
-#define CR_PER_Set ((uint32_t)0x00000002)
-#define CR_PER_Reset ((uint32_t)0x00001FFD)
-#define CR_MER_Set ((uint32_t)0x00000004)
-#define CR_MER_Reset ((uint32_t)0x00001FFB)
-#define CR_OPTPG_Set ((uint32_t)0x00000010)
-#define CR_OPTPG_Reset ((uint32_t)0x00001FEF)
-#define CR_OPTER_Set ((uint32_t)0x00000020)
-#define CR_OPTER_Reset ((uint32_t)0x00001FDF)
-#define CR_STRT_Set ((uint32_t)0x00000040)
-#define CR_LOCK_Set ((uint32_t)0x00000080)
-
-/* FLASH Mask */
-#define RDPRT_Mask ((uint32_t)0x00000002)
-#define WRP0_Mask ((uint32_t)0x000000FF)
-#define WRP1_Mask ((uint32_t)0x0000FF00)
-#define WRP2_Mask ((uint32_t)0x00FF0000)
-#define WRP3_Mask ((uint32_t)0xFF000000)
-
-/* FLASH Keys */
-#define RDP_Key ((uint16_t)0x00A5)
-#define FLASH_KEY1 ((uint32_t)0x45670123)
-#define FLASH_KEY2 ((uint32_t)0xCDEF89AB)
-
-/* Delay definition */
-#define EraseTimeout ((uint32_t)0x00000FFF)
-#define ProgramTimeout ((uint32_t)0x0000000F)
-
-/**
- * @}
- */
-
-/** @defgroup FLASH_Private_Macros
- * @{
- */
-
-/**
- * @}
- */
-
-/** @defgroup FLASH_Private_Variables
- * @{
- */
-
-/**
- * @}
- */
-
-/** @defgroup FLASH_Private_FunctionPrototypes
- * @{
- */
-
-static void delay(void);
-/**
- * @}
- */
-
-/** @defgroup FLASH_Private_Functions
- * @{
- */
-
-/**
- * @brief Sets the code latency value.
- * @param FLASH_Latency: specifies the FLASH Latency value.
- * This parameter can be one of the following values:
- * @arg FLASH_Latency_0: FLASH Zero Latency cycle
- * @arg FLASH_Latency_1: FLASH One Latency cycle
- * @arg FLASH_Latency_2: FLASH Two Latency cycles
- * @retval None
- */
-void FLASH_SetLatency(uint32_t FLASH_Latency)
-{
- uint32_t tmpreg = 0;
-
- /* Check the parameters */
- assert_param(IS_FLASH_LATENCY(FLASH_Latency));
-
- /* Read the ACR register */
- tmpreg = FLASH->ACR;
-
- /* Sets the Latency value */
- tmpreg &= ACR_LATENCY_Mask;
- tmpreg |= FLASH_Latency;
-
- /* Write the ACR register */
- FLASH->ACR = tmpreg;
-}
-
-/**
- * @brief Enables or disables the Half cycle flash access.
- * @param FLASH_HalfCycleAccess: specifies the FLASH Half cycle Access mode.
- * This parameter can be one of the following values:
- * @arg FLASH_HalfCycleAccess_Enable: FLASH Half Cycle Enable
- * @arg FLASH_HalfCycleAccess_Disable: FLASH Half Cycle Disable
- * @retval None
- */
-void FLASH_HalfCycleAccessCmd(uint32_t FLASH_HalfCycleAccess)
-{
- /* Check the parameters */
- assert_param(IS_FLASH_HALFCYCLEACCESS_STATE(FLASH_HalfCycleAccess));
-
- /* Enable or disable the Half cycle access */
- FLASH->ACR &= ACR_HLFCYA_Mask;
- FLASH->ACR |= FLASH_HalfCycleAccess;
-}
-
-/**
- * @brief Enables or disables the Prefetch Buffer.
- * @param FLASH_PrefetchBuffer: specifies the Prefetch buffer status.
- * This parameter can be one of the following values:
- * @arg FLASH_PrefetchBuffer_Enable: FLASH Prefetch Buffer Enable
- * @arg FLASH_PrefetchBuffer_Disable: FLASH Prefetch Buffer Disable
- * @retval None
- */
-void FLASH_PrefetchBufferCmd(uint32_t FLASH_PrefetchBuffer)
-{
- /* Check the parameters */
- assert_param(IS_FLASH_PREFETCHBUFFER_STATE(FLASH_PrefetchBuffer));
-
- /* Enable or disable the Prefetch Buffer */
- FLASH->ACR &= ACR_PRFTBE_Mask;
- FLASH->ACR |= FLASH_PrefetchBuffer;
-}
-
-/**
- * @brief Unlocks the FLASH Program Erase Controller.
- * @param None
- * @retval None
- */
-void FLASH_Unlock(void)
-{
- /* Authorize the FPEC Access */
- FLASH->KEYR = FLASH_KEY1;
- FLASH->KEYR = FLASH_KEY2;
-}
-
-/**
- * @brief Locks the FLASH Program Erase Controller.
- * @param None
- * @retval None
- */
-void FLASH_Lock(void)
-{
- /* Set the Lock Bit to lock the FPEC and the FCR */
- FLASH->CR |= CR_LOCK_Set;
-}
-
-/**
- * @brief Erases a specified FLASH page.
- * @param Page_Address: The page address to be erased.
- * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_ErasePage(uint32_t Page_Address)
-{
- FLASH_Status status = FLASH_COMPLETE;
- /* Check the parameters */
- assert_param(IS_FLASH_ADDRESS(Page_Address));
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the previous operation is completed, proceed to erase the page */
- FLASH->CR|= CR_PER_Set;
- FLASH->AR = Page_Address;
- FLASH->CR|= CR_STRT_Set;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
- if(status != FLASH_TIMEOUT)
- {
- /* if the erase operation is completed, disable the PER Bit */
- FLASH->CR &= CR_PER_Reset;
- }
- }
- /* Return the Erase Status */
- return status;
-}
-
-/**
- * @brief Erases all FLASH pages.
- * @param None
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_EraseAllPages(void)
-{
- FLASH_Status status = FLASH_COMPLETE;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the previous operation is completed, proceed to erase all pages */
- FLASH->CR |= CR_MER_Set;
- FLASH->CR |= CR_STRT_Set;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
- if(status != FLASH_TIMEOUT)
- {
- /* if the erase operation is completed, disable the MER Bit */
- FLASH->CR &= CR_MER_Reset;
- }
- }
- /* Return the Erase Status */
- return status;
-}
-
-/**
- * @brief Erases the FLASH option bytes.
- * @param None
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_EraseOptionBytes(void)
-{
- FLASH_Status status = FLASH_COMPLETE;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
- if(status == FLASH_COMPLETE)
- {
- /* Authorize the small information block programming */
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
-
- /* if the previous operation is completed, proceed to erase the option bytes */
- FLASH->CR |= CR_OPTER_Set;
- FLASH->CR |= CR_STRT_Set;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the erase operation is completed, disable the OPTER Bit */
- FLASH->CR &= CR_OPTER_Reset;
-
- /* Enable the Option Bytes Programming operation */
- FLASH->CR |= CR_OPTPG_Set;
- /* Enable the readout access */
- OB->RDP= RDP_Key;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- else
- {
- if (status != FLASH_TIMEOUT)
- {
- /* Disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- }
- /* Return the erase status */
- return status;
-}
-
-/**
- * @brief Programs a word at a specified address.
- * @param Address: specifies the address to be programmed.
- * @param Data: specifies the data to be programmed.
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
-{
- FLASH_Status status = FLASH_COMPLETE;
- __IO uint32_t tmp = 0;
-
- /* Check the parameters */
- assert_param(IS_FLASH_ADDRESS(Address));
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the previous operation is completed, proceed to program the new first
- half word */
- FLASH->CR |= CR_PG_Set;
-
- *(__IO uint16_t*)Address = (uint16_t)Data;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the previous operation is completed, proceed to program the new second
- half word */
- tmp = Address + 2;
-
- *(__IO uint16_t*) tmp = Data >> 16;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status != FLASH_TIMEOUT)
- {
- /* Disable the PG Bit */
- FLASH->CR &= CR_PG_Reset;
- }
- }
- else
- {
- if (status != FLASH_TIMEOUT)
- {
- /* Disable the PG Bit */
- FLASH->CR &= CR_PG_Reset;
- }
- }
- }
- /* Return the Program Status */
- return status;
-}
-
-/**
- * @brief Programs a half word at a specified address.
- * @param Address: specifies the address to be programmed.
- * @param Data: specifies the data to be programmed.
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
-{
- FLASH_Status status = FLASH_COMPLETE;
- /* Check the parameters */
- assert_param(IS_FLASH_ADDRESS(Address));
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* if the previous operation is completed, proceed to program the new data */
- FLASH->CR |= CR_PG_Set;
-
- *(__IO uint16_t*)Address = Data;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the PG Bit */
- FLASH->CR &= CR_PG_Reset;
- }
- }
- /* Return the Program Status */
- return status;
-}
-
-/**
- * @brief Programs a half word at a specified Option Byte Data address.
- * @param Address: specifies the address to be programmed.
- * This parameter can be 0x1FFFF804 or 0x1FFFF806.
- * @param Data: specifies the data to be programmed.
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_ProgramOptionByteData(uint32_t Address, uint8_t Data)
-{
- FLASH_Status status = FLASH_COMPLETE;
- /* Check the parameters */
- assert_param(IS_OB_DATA_ADDRESS(Address));
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- if(status == FLASH_COMPLETE)
- {
- /* Authorize the small information block programming */
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
- /* Enables the Option Bytes Programming operation */
- FLASH->CR |= CR_OPTPG_Set;
- *(__IO uint16_t*)Address = Data;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- /* Return the Option Byte Data Program Status */
- return status;
-}
-
-/**
- * @brief Write protects the desired pages
- * @param FLASH_Pages: specifies the address of the pages to be write protected.
- * This parameter can be:
- * @arg For @b STM32_Low-density_devices: value between FLASH_WRProt_Pages0to3 and FLASH_WRProt_Pages28to31
- * @arg For @b STM32_Medium-density_devices: value between FLASH_WRProt_Pages0to3
- * and FLASH_WRProt_Pages124to127
- * @arg For @b STM32_High-density_devices: value between FLASH_WRProt_Pages0to1 and
- * FLASH_WRProt_Pages60to61 or FLASH_WRProt_Pages62to255
- * @arg For @b STM32_Connectivity_line_devices: value between FLASH_WRProt_Pages0to1 and
- * FLASH_WRProt_Pages60to61 or FLASH_WRProt_Pages62to127
- * @arg FLASH_WRProt_AllPages
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_EnableWriteProtection(uint32_t FLASH_Pages)
-{
- uint16_t WRP0_Data = 0xFFFF, WRP1_Data = 0xFFFF, WRP2_Data = 0xFFFF, WRP3_Data = 0xFFFF;
-
- FLASH_Status status = FLASH_COMPLETE;
-
- /* Check the parameters */
- assert_param(IS_FLASH_WRPROT_PAGE(FLASH_Pages));
-
- FLASH_Pages = (uint32_t)(~FLASH_Pages);
- WRP0_Data = (uint16_t)(FLASH_Pages & WRP0_Mask);
- WRP1_Data = (uint16_t)((FLASH_Pages & WRP1_Mask) >> 8);
- WRP2_Data = (uint16_t)((FLASH_Pages & WRP2_Mask) >> 16);
- WRP3_Data = (uint16_t)((FLASH_Pages & WRP3_Mask) >> 24);
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* Authorizes the small information block programming */
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
- FLASH->CR |= CR_OPTPG_Set;
- if(WRP0_Data != 0xFF)
- {
- OB->WRP0 = WRP0_Data;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- }
- if((status == FLASH_COMPLETE) && (WRP1_Data != 0xFF))
- {
- OB->WRP1 = WRP1_Data;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- }
- if((status == FLASH_COMPLETE) && (WRP2_Data != 0xFF))
- {
- OB->WRP2 = WRP2_Data;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- }
-
- if((status == FLASH_COMPLETE)&& (WRP3_Data != 0xFF))
- {
- OB->WRP3 = WRP3_Data;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- }
-
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- /* Return the write protection operation Status */
- return status;
-}
-
-/**
- * @brief Enables or disables the read out protection.
- * @note If the user has already programmed the other option bytes before calling
- * this function, he must re-program them since this function erases all option bytes.
- * @param Newstate: new state of the ReadOut Protection.
- * This parameter can be: ENABLE or DISABLE.
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_ReadOutProtection(FunctionalState NewState)
-{
- FLASH_Status status = FLASH_COMPLETE;
- /* Check the parameters */
- assert_param(IS_FUNCTIONAL_STATE(NewState));
- status = FLASH_WaitForLastOperation(EraseTimeout);
- if(status == FLASH_COMPLETE)
- {
- /* Authorizes the small information block programming */
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
- FLASH->CR |= CR_OPTER_Set;
- FLASH->CR |= CR_STRT_Set;
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
- if(status == FLASH_COMPLETE)
- {
- /* if the erase operation is completed, disable the OPTER Bit */
- FLASH->CR &= CR_OPTER_Reset;
- /* Enable the Option Bytes Programming operation */
- FLASH->CR |= CR_OPTPG_Set;
- if(NewState != DISABLE)
- {
- OB->RDP = 0x00;
- }
- else
- {
- OB->RDP = RDP_Key;
- }
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(EraseTimeout);
-
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- else
- {
- if(status != FLASH_TIMEOUT)
- {
- /* Disable the OPTER Bit */
- FLASH->CR &= CR_OPTER_Reset;
- }
- }
- }
- /* Return the protection operation Status */
- return status;
-}
-
-/**
- * @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
- * @param OB_IWDG: Selects the IWDG mode
- * This parameter can be one of the following values:
- * @arg OB_IWDG_SW: Software IWDG selected
- * @arg OB_IWDG_HW: Hardware IWDG selected
- * @param OB_STOP: Reset event when entering STOP mode.
- * This parameter can be one of the following values:
- * @arg OB_STOP_NoRST: No reset generated when entering in STOP
- * @arg OB_STOP_RST: Reset generated when entering in STOP
- * @param OB_STDBY: Reset event when entering Standby mode.
- * This parameter can be one of the following values:
- * @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY
- * @arg OB_STDBY_RST: Reset generated when entering in STANDBY
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_UserOptionByteConfig(uint16_t OB_IWDG, uint16_t OB_STOP, uint16_t OB_STDBY)
-{
- FLASH_Status status = FLASH_COMPLETE;
-
- /* Check the parameters */
- assert_param(IS_OB_IWDG_SOURCE(OB_IWDG));
- assert_param(IS_OB_STOP_SOURCE(OB_STOP));
- assert_param(IS_OB_STDBY_SOURCE(OB_STDBY));
-
- /* Authorize the small information block programming */
- FLASH->OPTKEYR = FLASH_KEY1;
- FLASH->OPTKEYR = FLASH_KEY2;
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
-
- if(status == FLASH_COMPLETE)
- {
- /* Enable the Option Bytes Programming operation */
- FLASH->CR |= CR_OPTPG_Set;
-
- OB->USER = OB_IWDG | (uint16_t)(OB_STOP | (uint16_t)(OB_STDBY | ((uint16_t)0xF8)));
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation(ProgramTimeout);
- if(status != FLASH_TIMEOUT)
- {
- /* if the program operation is completed, disable the OPTPG Bit */
- FLASH->CR &= CR_OPTPG_Reset;
- }
- }
- /* Return the Option Byte program Status */
- return status;
-}
-
-/**
- * @brief Returns the FLASH User Option Bytes values.
- * @param None
- * @retval The FLASH User Option Bytes values:IWDG_SW(Bit0), RST_STOP(Bit1)
- * and RST_STDBY(Bit2).
- */
-uint32_t FLASH_GetUserOptionByte(void)
-{
- /* Return the User Option Byte */
- return (uint32_t)(FLASH->OBR >> 2);
-}
-
-/**
- * @brief Returns the FLASH Write Protection Option Bytes Register value.
- * @param None
- * @retval The FLASH Write Protection Option Bytes Register value
- */
-uint32_t FLASH_GetWriteProtectionOptionByte(void)
-{
- /* Return the Falsh write protection Register value */
- return (uint32_t)(FLASH->WRPR);
-}
-
-/**
- * @brief Checks whether the FLASH Read Out Protection Status is set or not.
- * @param None
- * @retval FLASH ReadOut Protection Status(SET or RESET)
- */
-FlagStatus FLASH_GetReadOutProtectionStatus(void)
-{
- FlagStatus readoutstatus = RESET;
- if ((FLASH->OBR & RDPRT_Mask) != (uint32_t)RESET)
- {
- readoutstatus = SET;
- }
- else
- {
- readoutstatus = RESET;
- }
- return readoutstatus;
-}
-
-/**
- * @brief Checks whether the FLASH Prefetch Buffer status is set or not.
- * @param None
- * @retval FLASH Prefetch Buffer Status (SET or RESET).
- */
-FlagStatus FLASH_GetPrefetchBufferStatus(void)
-{
- FlagStatus bitstatus = RESET;
-
- if ((FLASH->ACR & ACR_PRFTBS_Mask) != (uint32_t)RESET)
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
- /* Return the new state of FLASH Prefetch Buffer Status (SET or RESET) */
- return bitstatus;
-}
-
-/**
- * @brief Enables or disables the specified FLASH interrupts.
- * @param FLASH_IT: specifies the FLASH interrupt sources to be enabled or disabled.
- * This parameter can be any combination of the following values:
- * @arg FLASH_IT_ERROR: FLASH Error Interrupt
- * @arg FLASH_IT_EOP: FLASH end of operation Interrupt
- * @param NewState: new state of the specified Flash interrupts.
- * This parameter can be: ENABLE or DISABLE.
- * @retval None
- */
-void FLASH_ITConfig(uint16_t FLASH_IT, FunctionalState NewState)
-{
- /* Check the parameters */
- assert_param(IS_FLASH_IT(FLASH_IT));
- assert_param(IS_FUNCTIONAL_STATE(NewState));
- if(NewState != DISABLE)
- {
- /* Enable the interrupt sources */
- FLASH->CR |= FLASH_IT;
- }
- else
- {
- /* Disable the interrupt sources */
- FLASH->CR &= ~(uint32_t)FLASH_IT;
- }
-}
-
-/**
- * @brief Checks whether the specified FLASH flag is set or not.
- * @param FLASH_FLAG: specifies the FLASH flag to check.
- * This parameter can be one of the following values:
- * @arg FLASH_FLAG_BSY: FLASH Busy flag
- * @arg FLASH_FLAG_PGERR: FLASH Program error flag
- * @arg FLASH_FLAG_WRPRTERR: FLASH Write protected error flag
- * @arg FLASH_FLAG_EOP: FLASH End of Operation flag
- * @arg FLASH_FLAG_OPTERR: FLASH Option Byte error flag
- * @retval The new state of FLASH_FLAG (SET or RESET).
- */
-FlagStatus FLASH_GetFlagStatus(uint16_t FLASH_FLAG)
-{
- FlagStatus bitstatus = RESET;
- /* Check the parameters */
- assert_param(IS_FLASH_GET_FLAG(FLASH_FLAG)) ;
- if(FLASH_FLAG == FLASH_FLAG_OPTERR)
- {
- if((FLASH->OBR & FLASH_FLAG_OPTERR) != (uint32_t)RESET)
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
- }
- else
- {
- if((FLASH->SR & FLASH_FLAG) != (uint32_t)RESET)
- {
- bitstatus = SET;
- }
- else
- {
- bitstatus = RESET;
- }
- }
- /* Return the new state of FLASH_FLAG (SET or RESET) */
- return bitstatus;
-}
-
-/**
- * @brief Clears the FLASH’s pending flags.
- * @param FLASH_FLAG: specifies the FLASH flags to clear.
- * This parameter can be any combination of the following values:
- * @arg FLASH_FLAG_PGERR: FLASH Program error flag
- * @arg FLASH_FLAG_WRPRTERR: FLASH Write protected error flag
- * @arg FLASH_FLAG_EOP: FLASH End of Operation flag
- * @retval None
- */
-void FLASH_ClearFlag(uint16_t FLASH_FLAG)
-{
- /* Check the parameters */
- assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG)) ;
-
- /* Clear the flags */
- FLASH->SR = FLASH_FLAG;
-}
-
-/**
- * @brief Returns the FLASH Status.
- * @param None
- * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
- * FLASH_ERROR_WRP or FLASH_COMPLETE
- */
-FLASH_Status FLASH_GetStatus(void)
-{
- FLASH_Status flashstatus = FLASH_COMPLETE;
-
- if((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY)
- {
- flashstatus = FLASH_BUSY;
- }
- else
- {
- if((FLASH->SR & FLASH_FLAG_PGERR) != 0)
- {
- flashstatus = FLASH_ERROR_PG;
- }
- else
- {
- if((FLASH->SR & FLASH_FLAG_WRPRTERR) != 0 )
- {
- flashstatus = FLASH_ERROR_WRP;
- }
- else
- {
- flashstatus = FLASH_COMPLETE;
- }
- }
- }
- /* Return the Flash Status */
- return flashstatus;
-}
-
-/**
- * @brief Waits for a Flash operation to complete or a TIMEOUT to occur.
- * @param Timeout: FLASH progamming Timeout
- * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
- * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
- */
-FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout)
-{
- FLASH_Status status = FLASH_COMPLETE;
-
- /* Check for the Flash Status */
- status = FLASH_GetStatus();
- /* Wait for a Flash operation to complete or a TIMEOUT to occur */
- while((status == FLASH_BUSY) && (Timeout != 0x00))
- {
- delay();
- status = FLASH_GetStatus();
- Timeout--;
- }
- if(Timeout == 0x00 )
- {
- status = FLASH_TIMEOUT;
- }
- /* Return the operation status */
- return status;
-}
-
-/**
- * @brief Inserts a time delay.
- * @param None
- * @retval None
- */
-static void delay(void)
-{
- __IO uint32_t i = 0;
- for(i = 0xFF; i != 0; i--)
- {
- }
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
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