1、在stm32f103xe.h 文件中，在FLASH_TypeDef 结构体中，增加MODEKEYR 成员定义。
修改后如下图所示：
2、目前CH32F103 的FLASH 最大为64K，在chflash.c文件中，修改ValidAddrEnd。
修改后如下图所示：
注：大容量芯片可以相应修改ValidAddrEnd的“0x10000”数据即可
3、上述步骤完成后，即可执行单次128字节的编程，编写Flash_Test_Fast()函数，测试单次128字节编程。
备注：
chflash.c文件
#include "chflash.h"
#include "delay.h"
#include "usart.h"
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_PAGE_PG ((uint32_t)0x00010000)
define CR_PAGE_ER ((uint32_t)0x00020000)
define CR_BUF_LOAD ((uint32_t)0x00040000)
define CR_BUF_RST ((uint32_t)0x00080000)
/* FLASH Status Register bits */
define SR_BSY ((uint32_t)0x00000001)
define SR_PGERR ((uint32_t)0x00000004)
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)0x00002000)
/* Flash Program Vaild Address */
define ValidAddrStart (FLASH_BASE)
define ValidAddrEnd (FLASH_BASE + 0x10000)
/*********************************************************************
-
@fn FLASH_Unlock_Fast
-
@brief Unlocks the Fast Program Erase Mode.
-
@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;
}
/*********************************************************************
- @fn FLASH_Lock_Fast
- @brief Locks the Fast Program Erase Mode.
- @return none
*/
void FLASH_Lock_Fast( void )
{
FLASH->CR |= CR_LOCK_Set;
}
/*********************************************************************
- @fn FLASH_Unlock_Fast
- @brief Unlocks the Fast Program Erase Mode.
- @return none
*/
void FLASH_BufReset( void )
{
FLASH->CR |= CR_PAGE_PG;
FLASH->CR |= CR_BUF_RST;
while( FLASH->SR & SR_BSY );
FLASH->CR &= ~CR_PAGE_PG;
}
/*********************************************************************
-
@fn FLASH_BufLoad
-
@brief Flash Buffer load(128 bit).
-
@param Address - specifies the address to be programmed.
-
Data0 - specifies the data0 to be programmed.
-
Data1 - specifies the data1 to be programmed.
-
Data2 - specifies the data2 to be programmed.
-
Data3 - specifies the data3 to be programmed.
-
@return none
*/
void FLASH_BufLoad( uint32_t Address, uint32_t Data0, uint32_t Data1, uint32_t Data2, uint32_t Data3 )
{
if( ( Address >= ValidAddrStart ) && ( Address < ValidAddrEnd ) )
{
FLASH->CR |= CR_PAGE_PG;
*( __IO uint32_t * )( Address + 0x00 ) = Data0;
*( __IO uint32_t * )( Address + 0x04 ) = Data1;
*( __IO uint32_t * )( Address + 0x08 ) = Data2;
*( __IO uint32_t * )( Address + 0x0C ) = Data3;
FLASH->CR |= CR_BUF_LOAD;
while( FLASH->SR & SR_BSY );
FLASH->CR &= ~CR_PAGE_PG;
*( __IO uint32_t * )0x40022034 = *( __IO uint32_t * )( Address ^ 0x00000100 );
}
}
/*********************************************************************
-
@fn FLASH_ErasePage_Fast
-
@brief Erases a specified FLASH page (1page = 256Byte).
-
@param Page_Address - The page address to be erased.
-
@return none
*/
void FLASH_ErasePage_Fast( uint32_t Page_Address )
{
if( ( Page_Address >= ValidAddrStart ) && ( Page_Address < ValidAddrEnd ) )
{
FLASH->CR |= CR_PAGE_ER;
FLASH->AR = Page_Address;
FLASH->CR |= CR_STRT_Set;
while( FLASH->SR & SR_BSY );
FLASH->CR &= ~CR_PAGE_ER;
*( __IO uint32_t * )0x40022034 = *( __IO uint32_t * )( Page_Address ^ 0x00000100 );
}
}
/*********************************************************************
-
@fn FLASH_ProgramPage_Fast
-
@brief Program a specified FLASH page (1page = 256Byte).
-
@param Page_Address - The page address to be programed.
@return none
*/
void FLASH_ProgramPage_Fast( uint32_t Page_Address )
{
if( ( Page_Address >= ValidAddrStart ) && ( Page_Address < ValidAddrEnd ) )
{
FLASH->CR |= CR_PAGE_PG;
FLASH->AR = Page_Address;
FLASH->CR |= CR_STRT_Set;
while( FLASH->SR & SR_BSY );
FLASH->CR &= ~CR_PAGE_PG;*( __IO uint32_t * )0x40022034 = *( __IO uint32_t * )( Page_Address ^ 0x00000100 );}
}
chflash.h文件
#ifndef __CHFLASH_H__ #define __CHFLASH_H__ #include "sys.h"define FLASH_SAVE_ADDR 0x0800FC00 //ÉèÖÃFLASH ±£´æµØÖ·(±ØÐëΪżÊý£¬ÇÒÆäÖµÒª´óÓÚ±¾´úÂëËùÕ¼ÓÃFLASHµÄ´óС+0X08000000)
void Flash_Test_Fast( void );
endif