flash.c

msp430x44x系列单片机写程序FLASH

#include  <msp430x44x.h>

#include "../main/parameter.h"

#include "msp430x44x_hard.h"
#include "flash.h"


/****************************************************************************************************************
 Function: unsigned char FlashBusy()
 Description: 测试flash是否忙 1：忙   0：不忙
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****************************************************************************************************************/
unsigned char FlashBusy()
{
   if((FCTL3 & BUSY) == BUSY)
      return 1;
   else
      return 0;
}


/****************************************************************************************************************
 Function: void FlashInit(void)
 Description: 设置adc12通道，及通道参考电压，触发中断等
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****************************************************************************************************************/
void FlashInit(void)
{
   //DCOCTL = DCO0 + DCO0;
   //BCSCTL1 = DCO_470KHZ + ACLK_DIV_1 + XT2OFF;
   //BCSCTL2 = DCO_ON + SMCLK_DIV_1 + SMCLK_DCOCLK + MCLK_DIV_1 + MCLK_DCOCLK;
    
   FCTL2 = FWKEY + FSSEL_1 + (FREQ/400000 - 1);        // FN3 + FN4;       //mclk  
   FCTL3 = FWKEY;
   while(FlashBusy() == 1);                            // 等待FLASH存储器完成操作
}  


/****************************************************************************************************************
 Function: void FlashErase(unsigned int flashAdr)
 Description: 设置adc12通道，及通道参考电压，触发中断等
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****************************************************************************************************************/
void FlashErase(unsigned int flashAdr)
{
   unsigned char *pointer;
   
   if (flashAdr > 0xfdff) return;
   if (flashAdr < CALI_DATA_ADDR)return;   
   clear_WDT();
        
   FCTL3 = FWKEY;
   FCTL1 = FWKEY + ERASE;
   pointer = (unsigned char *)flashAdr;
   *pointer = 0;			               // 向段内地址任意写，启动擦除操作
   FCTL1 = FWKEY;
   FCTL3 = FWKEY+LOCK;
   while(FlashBusy() == 1);                            // 等待FLASH存储器完成操作
}


/****************************************************************************************************************
 Function: void FlashWW(unsigned int Adr,unsigned int DataW)
 Description: 字编程
 Calls:
 Calls By:
 Table Accessed:
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 Input:   Adr：要编程的地址，注意：不是指针类型，应当是偶地址
          DataW：要编程的字   
 Output:
 Return:
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****************************************************************************************************************/
void FlashWW(unsigned int Adr, unsigned int DataW)
{
   FCTL1=FWKEY+WRT;
   FCTL3 = FWKEY;
   *((unsigned int *)Adr) = DataW;
   FCTL1 = FWKEY;
   FCTL3 = FWKEY+LOCK;
   while(FlashBusy() == 1);	                       // 等待FLASH存储器完成操作
}


/****************************************************************************************************************
 Function: void FlashWB(unsigned int Adr,unsigned char DataB)
 Description: 字节编程
 Calls:
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 Table Accessed:
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 Input:   Adr：指向要编程的地址，注意：不是指针类型
          DataB：要编程的字节
 Output:
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****************************************************************************************************************/
void FlashWB(unsigned int Adr,unsigned char DataB)
{
   FCTL1 = FWKEY+WRT;
   FCTL3 = FWKEY;
   *((unsigned char *)Adr) = DataB;
   FCTL1 = FWKEY;
   FCTL3 = FWKEY+LOCK;
   while(FlashBusy() == 1);	                       // 等待FLASH存储器完成操作
}


/****************************************************************************************************************
 Function: void FlashWSegment(unsigned int SegmentAdr, unsigned char *p, unsigned char SegmentSize)
 Description: 字节编程
 Calls:
 Calls By:
 Table Accessed:
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 Input:   SegmentAdr：指向要编程的地址，注意：不是指针类型
          *p        : 指向带写入数据的数组，指针类型
          SegmentSize：要编程的段的大小
 Output:
 Return:
 Others:    
****************************************************************************************************************/
void FlashWSegment(unsigned int SegmentAdr, unsigned char *p, unsigned char SegmentSize)
{
   unsigned int i;
  
   FCTL1 = FWKEY+WRT;
   FCTL3 = FWKEY;
   
   for (i = 0; i < SegmentSize; i++)
   {
      *((unsigned char *)SegmentAdr) = *p;
      SegmentAdr++;
      p++;
   }
   
   FCTL1 = FWKEY;
   FCTL3 = FWKEY+LOCK;
   while(FlashBusy() == 1);	                       // 等待FLASH存储器完成操作
}