flash MSP430单片机读写FLASH.rar_msp430 flash_msp430 flash_msp430f149

/*************************************************************/ // MSP-FET430P140 Demo - Basic Clock, LPM3 Using WDT ISR, 32kHz ACLK // // Description: This program operates MSP430 normally in LPM3, pulsing P3.4 // at 4 second intervals. WDT ISR used to wake-up system. All I/O configured // as low outputs to eliminate floating inputs. Current consumption does // increase when LED is powered on P3.4. Demo for measuring LPM3 current. // ACLK= LFXT1/4= 32768/4, MCLK= SMCLK= default DCO // /* External watch crystal on XIN XOUT is required for ACLK */ // // // MSP430G2553 // --------------- // /|\| XIN|- // | | | 32kHz // --|RST XOUT|- // | | // | P3.5|-->LED // // Dasheng // LiTian Electronic Inc. // Feb 2008 // Built with IAR Embedded Workbench Version: 3.42A /********************************************************************** **************************************************************/ #include <msp430g2553.h> #include "EEPROM.h" //****************************************************************************** //FLASH段擦除 void flash_erase(unsigned int *pc_word) { while(FCTL3 & BUSY); //如果处于忙状态，则等待 FCTL3 = FWKEY ; //清出LOCK标志，解锁 FCTL1 = FWKEY + ERASE ; //允许段擦除 *pc_word = 0; //擦除..擦除.. while(FCTL3 & BUSY); FCTL3 = FWKEY + LOCK ; //加锁 } //****************************************************************************** //向FLASH信息区读出指定数量的字节数据 //unsigned int*pc_word :信息区数据指针 //unsigned char *array :读出数据存放数据数组,8位长 //unsigned char amount :读操的数量,范围0-127 void read_array(unsigned char *pc_byte, unsigned char *array,unsigned char amount) { unsigned char i; if(amount<=127) { for(i=0;i< amount;i++) { *array = *pc_byte; //读数据，读数据时，flash地址自动加 1 array++; //接收缓冲区地址加 1 pc_byte++; } } } //****************************************************************************** //向FLASH信息区写入指定数量的字节数据 //unsigned char *pc_byte 信息区数据指针 //unsigned char *array :读出数据存放数据数组,8位长 //unsigned char amount :读操的数量,范围0-127 void write_array(unsigned char *pc_byte,unsigned char *array, unsigned char amount) { unsigned char i; while(FCTL3 & BUSY); //如果处于忙状态，则等待 FCTL3 = FWKEY ; //清出LOCK标志 FCTL1 = FWKEY + WRT ; //写操作，块编程，+ BLKWRT; if(amount<=127) { for(i=0;i < amount;i++) { *pc_byte = *array; //*pc_byte = num; // num +=1; array++; //发送缓冲区地址加 1 pc_byte++; //写flash时，地址人为加 1 while(!(FCTL3 & WAIT)); //如果处于忙状态，则等待　，若用软件仿真，去掉　　　　　　　　　　　　　　　　　／／这语句 } } FCTL1 = FWKEY; //写操作完成，清除编程允许位 WRT，BLKWRT while(FCTL3 & BUSY); FCTL3 = FWKEY + LOCK; } //******************************************************************************