From 4849f800cf3ad6ba07ed785c5198d21917e63996 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Sat, 18 Jul 2009 12:55:22 +0000 Subject: Added ST firmware library files to the STM32 demo in order to make things easier to users. git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1067 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- .../stm32lib/src/stm32f10x_flash.c | 874 +++++++++++++++++++++ 1 file changed, 874 insertions(+) create mode 100644 demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c (limited to 'demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c') diff --git a/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c b/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c new file mode 100644 index 000000000..22ee18000 --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/stm32lib/src/stm32f10x_flash.c @@ -0,0 +1,874 @@ +/** + ****************************************************************************** + * @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. + * + *

© COPYRIGHT 2009 STMicroelectronics

+ */ + +/* 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****/ -- cgit v1.2.3