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TencentOS-tiny/board/TencentOS_Tiny_CH32V307_EVB/Peripheral/src/ch32v30x_flash.c

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/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v30x_flash.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file provides all the FLASH firmware functions.
***************************************************************************************/
#include "ch32v30x_flash.h"
/* 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)
#define CR_FAST_LOCK_Set ((uint32_t)0x00008000)
#define CR_PAGE_PG ((uint32_t)0x00010000)
#define CR_PAGE_ER ((uint32_t)0x00020000)
#define CR_BER32 ((uint32_t)0x00040000)
#define CR_BER64 ((uint32_t)0x00080000)
#define CR_PG_STRT ((uint32_t)0x00200000)
/* FLASH Status Register bits */
#define SR_BSY ((uint32_t)0x00000001)
#define SR_WR_BSY ((uint32_t)0x00000002)
#define SR_WRPRTERR ((uint32_t)0x00000010)
#define SR_EOP ((uint32_t)0x00000020)
/* 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)
#define OB_USER_BFB2 ((uint16_t)0x0008)
/* FLASH Keys */
#define RDP_Key ((uint16_t)0x00A5)
#define FLASH_KEY1 ((uint32_t)0x45670123)
#define FLASH_KEY2 ((uint32_t)0xCDEF89AB)
/* FLASH BANK address */
#define FLASH_BANK1_END_ADDRESS ((uint32_t)0x807FFFF)
/* Delay definition */
#define EraseTimeout ((uint32_t)0x000B0000)
#define ProgramTimeout ((uint32_t)0x00005000)
/********************************************************************************
* Function Name : FLASH_SetLatency
* Description : Sets the code latency value.
* Input : FLASH_Latency: specifies the FLASH Latency value.
* FLASH_Latency_0: FLASH Zero Latency cycle
* FLASH_Latency_1: FLASH One Latency cycle
* FLASH_Latency_2: FLASH Two Latency cycles
* Return : None
*********************************************************************************/
void FLASH_SetLatency(uint32_t FLASH_Latency)
{
uint32_t tmpreg = 0;
tmpreg = FLASH->ACTLR;
tmpreg &= ACR_LATENCY_Mask;
tmpreg |= FLASH_Latency;
FLASH->ACTLR = tmpreg;
}
/********************************************************************************
* Function Name : FLASH_HalfCycleAccessCmd
* Description : Enables or disables the Half cycle flash access.
* Input : FLASH_HalfCycleAccess: specifies the FLASH Half cycle Access mode.
* FLASH_HalfCycleAccess_Enable: FLASH Half Cycle Enable
* FLASH_HalfCycleAccess_Disable: FLASH Half Cycle Disable
* Return : None
*********************************************************************************/
void FLASH_HalfCycleAccessCmd(uint32_t FLASH_HalfCycleAccess)
{
FLASH->ACTLR &= ACR_HLFCYA_Mask;
FLASH->ACTLR |= FLASH_HalfCycleAccess;
}
/********************************************************************************
* Function Name : FLASH_PrefetchBufferCmd
* Description : Enables or disables the Prefetch Buffer.
* Input : FLASH_PrefetchBuffer: specifies the Prefetch buffer status.
* FLASH_PrefetchBuffer_Enable: FLASH Prefetch Buffer Enable
* FLASH_PrefetchBuffer_Disable: FLASH Prefetch Buffer Disable
* Return : None
*********************************************************************************/
void FLASH_PrefetchBufferCmd(uint32_t FLASH_PrefetchBuffer)
{
FLASH->ACTLR &= ACR_PRFTBE_Mask;
FLASH->ACTLR |= FLASH_PrefetchBuffer;
}
/********************************************************************************
* Function Name : FLASH_Unlock
* Description : Unlocks the FLASH Program Erase Controller.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_Unlock(void)
{
/* Authorize the FPEC of Bank1 Access */
FLASH->KEYR = FLASH_KEY1;
FLASH->KEYR = FLASH_KEY2;
}
/********************************************************************************
* Function Name : FLASH_UnlockBank1
* Description : Unlocks the FLASH Bank1 Program Erase Controller.
* equivalent to FLASH_Unlock function.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_UnlockBank1(void)
{
FLASH->KEYR = FLASH_KEY1;
FLASH->KEYR = FLASH_KEY2;
}
/********************************************************************************
* Function Name : FLASH_Lock
* Description : Locks the FLASH Program Erase Controller.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_Lock(void)
{
FLASH->CTLR |= CR_LOCK_Set;
}
/********************************************************************************
* Function Name : FLASH_LockBank1
* Description : Locks the FLASH Bank1 Program Erase Controller.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_LockBank1(void)
{
FLASH->CTLR |= CR_LOCK_Set;
}
/********************************************************************************
* Function Name : FLASH_ErasePage
* Description : Erases a specified FLASH page(page size 4KB).
* Input : Page_Address: The page address to be erased.
* Return : 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;
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR|= CR_PER_Set;
FLASH->ADDR = Page_Address;
FLASH->CTLR|= CR_STRT_Set;
status = FLASH_WaitForLastOperation(EraseTimeout);
FLASH->CTLR &= CR_PER_Reset;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_EraseAllPages
* Description : Erases all FLASH pages.
* Input : None
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
*********************************************************************************/
FLASH_Status FLASH_EraseAllPages(void)
{
FLASH_Status status = FLASH_COMPLETE;
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR |= CR_MER_Set;
FLASH->CTLR |= CR_STRT_Set;
status = FLASH_WaitForLastOperation(EraseTimeout);
FLASH->CTLR &= CR_MER_Reset;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_EraseAllBank1Pages
* Description : Erases all Bank1 FLASH pages.
* Input : None
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
*********************************************************************************/
FLASH_Status FLASH_EraseAllBank1Pages(void)
{
FLASH_Status status = FLASH_COMPLETE;
status = FLASH_WaitForLastBank1Operation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR |= CR_MER_Set;
FLASH->CTLR |= CR_STRT_Set;
status = FLASH_WaitForLastBank1Operation(EraseTimeout);
FLASH->CTLR &= CR_MER_Reset;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_EraseOptionBytes
* Description : Erases the FLASH option bytes.
* Input : None
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
*********************************************************************************/
FLASH_Status FLASH_EraseOptionBytes(void)
{
uint16_t rdptmp = RDP_Key;
FLASH_Status status = FLASH_COMPLETE;
if(FLASH_GetReadOutProtectionStatus() != RESET)
{
rdptmp = 0x00;
}
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->OBKEYR = FLASH_KEY1;
FLASH->OBKEYR = FLASH_KEY2;
FLASH->CTLR |= CR_OPTER_Set;
FLASH->CTLR |= CR_STRT_Set;
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR &= CR_OPTER_Reset;
FLASH->CTLR |= CR_OPTPG_Set;
OB->RDPR = (uint16_t)rdptmp;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
else
{
if (status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_ProgramWord
* Description : Programs a word at a specified address.
* Input : Address: specifies the address to be programmed.
* Data: specifies the data to be programmed.
* Return : FLASH Status: The returned value can be: FLASH_BUSY, 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;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR |= CR_PG_Set;
*(__IO uint16_t*)Address = (uint16_t)Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
tmp = Address + 2;
*(__IO uint16_t*) tmp = Data >> 16;
status = FLASH_WaitForLastOperation(ProgramTimeout);
FLASH->CTLR &= CR_PG_Reset;
}
else
{
FLASH->CTLR &= CR_PG_Reset;
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_ProgramHalfWord
* Description : Programs a half word at a specified address.
* Input : Address: specifies the address to be programmed.
* Data: specifies the data to be programmed.
* Return : FLASH Status: The returned value can be: FLASH_BUSY, 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;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR |= CR_PG_Set;
*(__IO uint16_t*)Address = Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
FLASH->CTLR &= CR_PG_Reset;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_ProgramOptionByteData
* Description : Programs a half word at a specified Option Byte Data address.
* Input : Address: specifies the address to be programmed.
* Data: specifies the data to be programmed.
* Return : FLASH Status: The returned value can be: FLASH_BUSY, 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;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->OBKEYR = FLASH_KEY1;
FLASH->OBKEYR = FLASH_KEY2;
FLASH->CTLR |= CR_OPTPG_Set;
*(__IO uint16_t*)Address = Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_EnableWriteProtection
* Description : Write protects the desired pages
* Input : FLASH_Pages: specifies the address of the pages to be write protected.
* Return : FLASH Status: The returned value can be: FLASH_BUSY, 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;
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);
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->OBKEYR = FLASH_KEY1;
FLASH->OBKEYR = FLASH_KEY2;
FLASH->CTLR |= CR_OPTPG_Set;
if(WRP0_Data != 0xFF)
{
OB->WRPR0 = WRP0_Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
}
if((status == FLASH_COMPLETE) && (WRP1_Data != 0xFF))
{
OB->WRPR1 = WRP1_Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
}
if((status == FLASH_COMPLETE) && (WRP2_Data != 0xFF))
{
OB->WRPR2 = WRP2_Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
}
if((status == FLASH_COMPLETE)&& (WRP3_Data != 0xFF))
{
OB->WRPR3 = WRP3_Data;
status = FLASH_WaitForLastOperation(ProgramTimeout);
}
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_ReadOutProtection
* Description : Enables or disables the read out protection.
* Input : Newstate: new state of the ReadOut Protection(ENABLE or DISABLE).
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
*********************************************************************************/
FLASH_Status FLASH_ReadOutProtection(FunctionalState NewState)
{
FLASH_Status status = FLASH_COMPLETE;
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->OBKEYR = FLASH_KEY1;
FLASH->OBKEYR = FLASH_KEY2;
FLASH->CTLR |= CR_OPTER_Set;
FLASH->CTLR |= CR_STRT_Set;
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR &= CR_OPTER_Reset;
FLASH->CTLR |= CR_OPTPG_Set;
if(NewState != DISABLE)
{
OB->RDPR = 0x00;
}
else
{
OB->RDPR = RDP_Key;
}
status = FLASH_WaitForLastOperation(EraseTimeout);
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
else
{
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTER_Reset;
}
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_UserOptionByteConfig
* Description : Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.
* Input : OB_IWDG: Selects the IWDG mode
* OB_IWDG_SW: Software IWDG selected
* OB_IWDG_HW: Hardware IWDG selected
* OB_STOP: Reset event when entering STOP mode.
* OB_STOP_NoRST: No reset generated when entering in STOP
* OB_STOP_RST: Reset generated when entering in STOP
* OB_STDBY: Reset event when entering Standby mode.
* OB_STDBY_NoRST: No reset generated when entering in STANDBY
* OB_STDBY_RST: Reset generated when entering in STANDBY
* Return : FLASH Status: The returned value can be: FLASH_BUSY, 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;
FLASH->OBKEYR = FLASH_KEY1;
FLASH->OBKEYR = FLASH_KEY2;
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status == FLASH_COMPLETE)
{
FLASH->CTLR |= CR_OPTPG_Set;
OB->USER = OB_IWDG | (uint16_t)(OB_STOP | (uint16_t)(OB_STDBY | ((uint16_t)0xF8)));
status = FLASH_WaitForLastOperation(ProgramTimeout);
if(status != FLASH_TIMEOUT)
{
FLASH->CTLR &= CR_OPTPG_Reset;
}
}
return status;
}
/********************************************************************************
* Function Name : FLASH_GetUserOptionByte
* Description : Returns the FLASH User Option Bytes values.
* Input : None
* Return : The FLASH User Option Bytes values:IWDG_SW(Bit0), RST_STOP(Bit1)
* and RST_STDBY(Bit2).
*********************************************************************************/
uint32_t FLASH_GetUserOptionByte(void)
{
return (uint32_t)(FLASH->OBR >> 2);
}
/********************************************************************************
* Function Name : FLASH_GetWriteProtectionOptionByte
* Description : Returns the FLASH Write Protection Option Bytes Register value.
* Input : None
* Return : The FLASH Write Protection Option Bytes Register value
*********************************************************************************/
uint32_t FLASH_GetWriteProtectionOptionByte(void)
{
return (uint32_t)(FLASH->WPR);
}
/********************************************************************************
* Function Name : FLASH_GetReadOutProtectionStatus
* Description : Checks whether the FLASH Read Out Protection Status is set or not.
* Input : None
* Return : 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;
}
/********************************************************************************
* Function Name : FLASH_GetPrefetchBufferStatus
* Description : Checks whether the FLASH Prefetch Buffer status is set or not.
* Input : None
* Return : FLASH Prefetch Buffer Status (SET or RESET).
*********************************************************************************/
FlagStatus FLASH_GetPrefetchBufferStatus(void)
{
FlagStatus bitstatus = RESET;
if ((FLASH->ACTLR & ACR_PRFTBS_Mask) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/********************************************************************************
* Function Name : FLASH_ITConfig
* Description : Enables or disables the specified FLASH interrupts.
* Input : FLASH_IT: specifies the FLASH interrupt sources to be enabled or disabled.
* FLASH_IT_ERROR: FLASH Error Interrupt
* FLASH_IT_EOP: FLASH end of operation Interrupt
* NewState: new state of the specified Flash interrupts(ENABLE or DISABLE).
* Return : FLASH Prefetch Buffer Status (SET or RESET).
*********************************************************************************/
void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState)
{
if(NewState != DISABLE)
{
FLASH->CTLR |= FLASH_IT;
}
else
{
FLASH->CTLR &= ~(uint32_t)FLASH_IT;
}
}
/********************************************************************************
* Function Name : FLASH_GetFlagStatus
* Description : Checks whether the specified FLASH flag is set or not.
* Input : FLASH_FLAG: specifies the FLASH flag to check.
* FLASH_FLAG_BSY: FLASH Busy flag
* FLASH_FLAG_PGERR: FLASH Program error flag
* FLASH_FLAG_WRPRTERR: FLASH Write protected error flag
* FLASH_FLAG_EOP: FLASH End of Operation flag
* FLASH_FLAG_OPTERR: FLASH Option Byte error flag
* Return : The new state of FLASH_FLAG (SET or RESET).
*********************************************************************************/
FlagStatus FLASH_GetFlagStatus(uint32_t FLASH_FLAG)
{
FlagStatus bitstatus = RESET;
if(FLASH_FLAG == FLASH_FLAG_OPTERR)
{
if((FLASH->OBR & FLASH_FLAG_OPTERR) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
}
else
{
if((FLASH->STATR & FLASH_FLAG) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
}
return bitstatus;
}
/********************************************************************************
* Function Name : FLASH_ClearFlag
* Description : Clears the FLASH's pending flags.
* Input : FLASH_FLAG: specifies the FLASH flags to clear.
* FLASH_FLAG_PGERR: FLASH Program error flag
* FLASH_FLAG_WRPRTERR: FLASH Write protected error flag
* FLASH_FLAG_EOP: FLASH End of Operation flag
* Return : None
*********************************************************************************/
void FLASH_ClearFlag(uint32_t FLASH_FLAG)
{
FLASH->STATR = FLASH_FLAG;
}
/********************************************************************************
* Function Name : FLASH_GetStatus
* Description : Returns the FLASH Status.
* Input : None
* Return : 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->STATR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY)
{
flashstatus = FLASH_BUSY;
}
else
{
if((FLASH->STATR & FLASH_FLAG_PGERR) != 0)
{
flashstatus = FLASH_ERROR_PG;
}
else
{
if((FLASH->STATR & FLASH_FLAG_WRPRTERR) != 0 )
{
flashstatus = FLASH_ERROR_WRP;
}
else
{
flashstatus = FLASH_COMPLETE;
}
}
}
return flashstatus;
}
/********************************************************************************
* Function Name : FLASH_GetBank1Status
* Description : Returns the FLASH Bank1 Status.
* Input : None
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP or FLASH_COMPLETE.
*********************************************************************************/
FLASH_Status FLASH_GetBank1Status(void)
{
FLASH_Status flashstatus = FLASH_COMPLETE;
if((FLASH->STATR & FLASH_FLAG_BANK1_BSY) == FLASH_FLAG_BSY)
{
flashstatus = FLASH_BUSY;
}
else
{
if((FLASH->STATR & FLASH_FLAG_BANK1_PGERR) != 0)
{
flashstatus = FLASH_ERROR_PG;
}
else
{
if((FLASH->STATR & FLASH_FLAG_BANK1_WRPRTERR) != 0 )
{
flashstatus = FLASH_ERROR_WRP;
}
else
{
flashstatus = FLASH_COMPLETE;
}
}
}
return flashstatus;
}
/********************************************************************************
* Function Name : FLASH_WaitForLastOperation
* Description : Waits for a Flash operation to complete or a TIMEOUT to occur.
* Input : Timeout: FLASH programming Timeout
* Return : FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
* FLASH_ERROR_WRP or FLASH_COMPLETE.
*********************************************************************************/
FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout)
{
FLASH_Status status = FLASH_COMPLETE;
status = FLASH_GetBank1Status();
while((status == FLASH_BUSY) && (Timeout != 0x00))
{
status = FLASH_GetBank1Status();
Timeout--;
}
if(Timeout == 0x00 )
{
status = FLASH_TIMEOUT;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_WaitForLastBank1Operation
* Description : Waits for a Flash operation on Bank1 to complete or a TIMEOUT to occur.
* Input : Timeout: FLASH programming Timeout
* Return : FLASH Status: The returned value can be: FLASH_ERROR_PG,
* FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
*********************************************************************************/
FLASH_Status FLASH_WaitForLastBank1Operation(uint32_t Timeout)
{
FLASH_Status status = FLASH_COMPLETE;
status = FLASH_GetBank1Status();
while((status == FLASH_FLAG_BANK1_BSY) && (Timeout != 0x00))
{
status = FLASH_GetBank1Status();
Timeout--;
}
if(Timeout == 0x00 )
{
status = FLASH_TIMEOUT;
}
return status;
}
/********************************************************************************
* Function Name : FLASH_Unlock_Fast
* Description : Unlocks the Fast Program Erase Mode.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_Unlock_Fast(void)
{
/* Authorize the FPEC of Bank1 Access */
FLASH->KEYR = FLASH_KEY1;
FLASH->KEYR = FLASH_KEY2;
/* Fast program mode unlock */
FLASH->MODEKEYR = FLASH_KEY1;
FLASH->MODEKEYR = FLASH_KEY2;
}
/********************************************************************************
* Function Name : FLASH_Lock_Fast
* Description : Locks the Fast Program Erase Mode.
* Input : None
* Return : None
*********************************************************************************/
void FLASH_Lock_Fast(void)
{
FLASH->CTLR |= CR_LOCK_Set;
}
/********************************************************************************
* Function Name : FLASH_ErasePage_Fast
* Description : Erases a specified FLASH page (1page = 256Byte).
* Input : Page_Address: The page address to be erased.
* Return : None
*********************************************************************************/
void FLASH_ErasePage_Fast(uint32_t Page_Address)
{
Page_Address &= 0xFFFFFF00;
FLASH->CTLR |= CR_PAGE_ER;
FLASH->ADDR = Page_Address;
FLASH->CTLR |= CR_STRT_Set;
while(FLASH->STATR & SR_BSY);
FLASH->CTLR &= ~CR_PAGE_ER;
}
/********************************************************************************
* Function Name : FLASH_EraseBlock_32K_Fast
* Description : Erases a specified FLASH Block (1Block = 32KByte).
* Input : Block_Address: The block address to be erased.
* Return : None
*********************************************************************************/
void FLASH_EraseBlock_32K_Fast(uint32_t Block_Address)
{
Block_Address &= 0xFFFF8000;
FLASH->CTLR |= CR_BER32;
FLASH->ADDR = Block_Address;
FLASH->CTLR |= CR_STRT_Set;
while(FLASH->STATR & SR_BSY);
FLASH->CTLR &= ~CR_BER32;
}
/********************************************************************************
* Function Name : FLASH_EraseBlock_64K_Fast
* Description : Erases a specified FLASH Block (1Block = 64KByte).
* Input : Block_Address: The block address to be erased.
* Return : None
*********************************************************************************/
void FLASH_EraseBlock_64K_Fast(uint32_t Block_Address)
{
Block_Address &= 0xFFFF0000;
FLASH->CTLR |= CR_BER64;
FLASH->ADDR = Block_Address;
FLASH->CTLR |= CR_STRT_Set;
while(FLASH->STATR & SR_BSY);
FLASH->CTLR &= ~CR_BER64;
}
/********************************************************************************
* Function Name : FLASH_ProgramPage_Fast
* Description : Program a specified FLASH page (1page = 256Byte).
* Input : Page_Address: The page address to be programed.
* Return : None
*********************************************************************************/
void FLASH_ProgramPage_Fast(uint32_t Page_Address, uint32_t*pbuf)
{
uint8_t size=64;
Page_Address &= 0xFFFFFF00;
FLASH->CTLR |= CR_PAGE_PG;
while(FLASH->STATR & SR_BSY);
while(FLASH->STATR & SR_WR_BSY);
while(size)
{
*(uint32_t*)Page_Address = *(uint32_t*)pbuf;
Page_Address += 4;
pbuf += 1;
size -= 1;
while (FLASH->STATR & SR_WR_BSY);
}
FLASH->CTLR |= CR_PG_STRT;
while(FLASH->STATR & SR_BSY);
FLASH->CTLR &= ~CR_PAGE_PG;
}
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