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📄 [技术问答 单片机] 不耗ram的flash读写程序（for msp430）==www_ic37_com.mht

📁 介绍430的flash读写的代码,是几篇网页文件资料
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                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY;// Clear =
WRT bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY + =
LOCK;// Set LOCK=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//------------------------------------------------------------------=
----------------------------</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
Flash_ReadByte=20
                  (unsigned char Address)</P>
                  <P style=3D"TEXT-INDENT: 2em">{ unsigned char =
Data;</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P style=3D"TEXT-INDENT: =
2em">Data=3D*(Flash_ptrA+Address);</P>
                  <P style=3D"TEXT-INDENT: 2em">return(Data);</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</P>
                  <P style=3D"TEXT-INDENT: =
2em">#if(SAVEWORD=3D=3DON)</P>
                  <P style=3D"TEXT-INDENT: 2em">void Flash_WriteWord =
(unsigned=20
                  char Address,unsigned int Data)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrB;//=20
                  Segment B pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned int i;</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">Flash_CopyA2B();//Flash=C4=DA=B5=C4=CA=FD=BE=DD=CF=C8=B1=A3=B4=E6=C6=
=F0=C0=B4</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrB =3D (unsigned =
char *)=20
                  FLASH_COPYADDR;// Initialize Flash segment B =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + =
ERASE;// Set Erase=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY;// Clear =
Lock=20
bit</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA =3D 0;// =
Dummy write to=20
                  erase Flash segment A</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + WRT;// =
Set WRT bit=20
                  for write operation</P>
                  <P style=3D"TEXT-INDENT: 2em">for (i=3D0; i&lt;MAXNUM; =
i++)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">if(i=3D=3DAddress)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DData/256;// Save=20
                  Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DData%256;// Save=20
                  Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">else</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =3D =
*Flash_ptrB++;//=20
                  =
=BB=D6=B8=B4Flash=C4=DA=B5=C4=C6=E4=CB=FB=CA=FD=BE=DD</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY;// Clear =
WRT bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY + =
LOCK;// Set LOCK=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">} </P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//------------------------------------------------------------------=
----------------------------</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned int =
Flash_ReadWord=20
                  (unsigned char Address)</P>
                  <P style=3D"TEXT-INDENT: 2em">{ unsigned int Data;</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">Data=3D*(Flash_ptrA+Address)*256+*(Flash_ptrA+Address+1);</P>
                  <P style=3D"TEXT-INDENT: 2em">return(Data);</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">#endif</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</P>
                  <P style=3D"TEXT-INDENT: =
2em">#if(SAVELONG=3D=3DON)</P>
                  <P style=3D"TEXT-INDENT: 2em">void Flash_WriteLong =
(unsigned=20
                  char Address,unsigned long int Data)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">union LongChar =
LData;</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrB;//=20
                  Segment B pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned int i;</P>
                  <P style=3D"TEXT-INDENT: 2em">LData.Long=3DData;</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">Flash_CopyA2B();//Flash=C4=DA=B5=C4=CA=FD=BE=DD=CF=C8=B1=A3=B4=E6=C6=
=F0=C0=B4</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrB =3D (unsigned =
char *)=20
                  FLASH_COPYADDR;// Initialize Flash segment B =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + =
ERASE;// Set Erase=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY;// Clear =
Lock=20
bit</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA =3D 0;// =
Dummy write to=20
                  erase Flash segment A</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + WRT;// =
Set WRT bit=20
                  for write operation</P>
                  <P style=3D"TEXT-INDENT: 2em">for (i=3D0; i&lt;MAXNUM; =
i++)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">if(i=3D=3DAddress)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DLData.Bytes.BHH;//=20
                  Save Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DLData.Bytes.BHL;//=20
                  Save Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DLData.Bytes.BLH;//=20
                  Save Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =
=3DLData.Bytes.BLL;//=20
                  Save Data</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">else</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA++ =3D =
*Flash_ptrB++;//=20
                  =
=BB=D6=B8=B4Flash=C4=DA=B5=C4=C6=E4=CB=FB=CA=FD=BE=DD</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY;// Clear =
WRT bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY + =
LOCK;// Set LOCK=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">} </P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//------------------------------------------------------------------=
----------------------------</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned long int =
Flash_ReadLong=20
                  (unsigned char Address)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">union LongChar Data;</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P style=3D"TEXT-INDENT: =
2em">Flash_ptrA+=3DAddress;</P>
                  <P style=3D"TEXT-INDENT: =
2em">Data.Bytes.BHH=3D*Flash_ptrA++;</P>
                  <P style=3D"TEXT-INDENT: =
2em">Data.Bytes.BHL=3D*Flash_ptrA++;</P>
                  <P style=3D"TEXT-INDENT: =
2em">Data.Bytes.BLH=3D*Flash_ptrA++;</P>
                  <P style=3D"TEXT-INDENT: =
2em">Data.Bytes.BLL=3D*Flash_ptrA++;</P>
                  <P style=3D"TEXT-INDENT: 2em">return(Data.Long);</P>
                  <P style=3D"TEXT-INDENT: 2em">}</P>
                  <P style=3D"TEXT-INDENT: 2em">#endif</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">//=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</P>
                  <P style=3D"TEXT-INDENT: =
2em">#if(SAVEFLOAT=3D=3DON)</P>
                  <P style=3D"TEXT-INDENT: 2em">void Flash_WriteFloat =
(unsigned=20
                  char Address,float Data)</P>
                  <P style=3D"TEXT-INDENT: 2em">{</P>
                  <P style=3D"TEXT-INDENT: 2em">union FloatChar =
FData;</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrA;//=20
                  Segment A pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned char =
*Flash_ptrB;//=20
                  Segment B pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">unsigned int i;</P>
                  <P style=3D"TEXT-INDENT: 2em">FData.Float=3DData;</P>
                  <P=20
                  style=3D"TEXT-INDENT: =
2em">Flash_CopyA2B();//Flash=C4=DA=B5=C4=CA=FD=BE=DD=CF=C8=B1=A3=B4=E6=C6=
=F0=C0=B4</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrA =3D (unsigned =
char *)=20
                  FLASH_SAVEADDR;// Initialize Flash segment A =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_ptrB =3D (unsigned =
char *)=20
                  FLASH_COPYADDR;// Initialize Flash segment B =
pointer</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + =
ERASE;// Set Erase=20
                  bit</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL3 =3D FWKEY;// Clear =
Lock=20
bit</P>
                  <P style=3D"TEXT-INDENT: 2em">*Flash_ptrA =3D 0;// =
Dummy write to=20
                  erase Flash segment A</P>
                  <P style=3D"TEXT-INDENT: 2em">Flash_Busy();//Busy</P>
                  <P style=3D"TEXT-INDENT: 2em">FCTL1 =3D FWKEY + WRT;// =
Set WRT bit=20
                  for write operation</P>
                  <P style=3D"TEXT-INDENT: 2em">for (i=3D0; i&lt;MAXNUM; =
i++)</P>
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