【免费】C8051F330340内部flash读写功能代码在项目中已经过验证亲测可用

共3个文件

c：2个

h：1个

51单片机

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C8051F330 340 已经过验证可用，描述里是调用函数，使用的时候应当注意地址位，f330和f340的flash地址，以及地址写保护方面留意一下。确保存储的地址是正确的即可使用。可以根据实际使用需求更换形参，即可轻松拓展。

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例程代码及头文件.zip （3个子文件）

例程代码及头文件

C8051_F340_FlashPrimitives.h 2KB

main.c 2KB

C8051_F340_FlashPrimitives.c 6KB

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//----------------------------------------------------------------------------- // C8051_F340_FlashPrimitives.c //----------------------------------------------------------------------------- // Copyright 2006 Silicon Laboratories, Inc. // http://www.silabs.com // // Program Description: // // This program contains several useful utilities for writing and updating // FLASH memory. // // FID: 34X000024 // Target: C8051F34x // Tool chain: Keil C51 8.00 / Keil EVAL C51 // Command Line: None // // Release 1.0 // -Initial Revision (GP) // -30 JAN 2006 // //----------------------------------------------------------------------------- // Includes //----------------------------------------------------------------------------- #include "C8051_F340_FlashPrimitives.h" #include <c8051F340.h> //----------------------------------------------------------------------------- // Structures, Unions, Enumerations, and Type Definitions //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // Global Constants //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // Function Prototypes //----------------------------------------------------------------------------- // FLASH read/write/erase routines void FLASH_ByteWrite (FLADDR addr, char byte); unsigned char FLASH_ByteRead (FLADDR addr); void FLASH_PageErase (FLADDR addr); //----------------------------------------------------------------------------- // Global Variables //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // FLASH Routines //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // FLASH_ByteWrite //----------------------------------------------------------------------------- // // Return Value : None // Parameters : // 1) FLADDR addr - target address to write to // range is 0 to (FLASH_TEMP-1) // 2) char byte - byte to write // // This routine writes <byte> to the linear FLASH address <addr>. // //----------------------------------------------------------------------------- void FLASH_ByteWrite (FLADDR addr, char byte) { bit EA_SAVE = EA; // Preserve EA char xdata * data pwrite; // FLASH write pointer EA = 0; // Disable interrupts // change clock speed to slow, then restore later VDM0CN = 0x80; // Enable VDD monitor RSTSRC = 0x02; // Enable VDD monitor as a reset source pwrite = (char xdata *) addr; FLKEY = 0xA5; // Key Sequence 1 FLKEY = 0xF1; // Key Sequence 2 PSCTL |= 0x01; // PSWE = 1 VDM0CN = 0x80; // Enable VDD monitor RSTSRC = 0x02; // Enable VDD monitor as a reset source *pwrite = byte; // Write the byte PSCTL &= ~0x01; // PSWE = 0 EA = EA_SAVE; // Restore interrupts } //----------------------------------------------------------------------------- // FLASH_ByteRead //----------------------------------------------------------------------------- // // Return Value : // 1) unsigned char - byte that was read from Flash // Parameters : // 1) FLADDR addr - target address to write to // range is 0 to (FLASH_TEMP-1) // // This routine reads a <byte> from the linear FLASH address <addr>. // //----------------------------------------------------------------------------- unsigned char FLASH_ByteRead (FLADDR addr) { bit EA_SAVE = EA; // Preserve EA char code * data pread; // FLASH read pointer unsigned char byte; EA = 0; // Disable interrupts pread = (char code *) addr; byte = *pread; // Read the byte EA = EA_SAVE; // Restore interrupts return byte; } //----------------------------------------------------------------------------- // FLASH_PageErase //----------------------------------------------------------------------------- // // Return Value : None // Parameters : // 1) FLADDR addr - target address to write to // range is 0 to (FLASH_TEMP-1) // // This routine erases the FLASH page containing the linear FLASH address // <addr>. // //----------------------------------------------------------------------------- void FLASH_PageErase (FLADDR addr) { bit EA_SAVE = EA; // Preserve EA char xdata * data pwrite; // FLASH write pointer EA = 0; // Disable interrupts // change clock speed to slow, then restore later VDM0CN = 0x80; // Enable VDD monitor RSTSRC = 0x02; // enable VDD monitor as a reset source pwrite = (char xdata *) addr; FLKEY = 0xA5; // Key Sequence 1 FLKEY = 0xF1; // Key Sequence 2 PSCTL |= 0x03; // PSWE = 1; PSEE = 1 VDM0CN = 0x80; // Enable VDD monitor RSTSRC = 0x02; // Enable VDD monitor as a reset source *pwrite = 0; // Initiate page erase PSCTL &= ~0x03; // PSWE = 0; PSEE = 0 EA = EA_SAVE; // Restore interrupts } //----------------------------------------------------------------------------- // End Of File //-----------------------------------------------------------------------------