msp430f169读写flash新谈（Msp430f169 read and write flash new talk）.docVIP

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2017-09-05 发布于河南
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msp430f169读写flash新谈（Msp430f169 read and write flash new talk）.doc

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msp430f169读写flash新谈（Msp430f169 read and write flash new talk）

msp430f169读写flash新谈（Msp430f169 read and write flash new talk） Used MSP430fi69 Type MCU has been more than 2 months, thought does not come into contact with the power down protection, did not think of this function, the project need to use SCM no way, can only bite the bullet to access to information. Online information available, can be said that the basic function can be found, but everyone seems to have online taboo in the final program released. This also led to the introduction of can read, but not out of debugging. Cut the crap, msp430f169 Type MCU power down protection flash 2, address: 0x1000-0x10ff and 0x1100-0x1ff. book says MSP430 microcontroller only support section to wipe out this, we must pay attention to, and this is also the reason why this kind of monolithic design for 2 Flash opportunities. Because you can erase the A while the data backup to B, then after the erase operation does not need to rewrite the address copy back. I dont what to do, or directly on the program, you think of yourself: Flash.h #ifndef __FLASH #define __FLASH Void FlashErase (unsigned int ADR); Unsigned char (FlashBusy); Void FlashWW (unsigned int Adr, unsigned int DataW); Void FlashWB (unsigned int Adr, unsigned char DataB); Unsigned char FlashRB (unsigned int Adr); Unsigned int FlashRW (unsigned int Adr); Void FlashWriteA (unsigned int addr, unsigned char data); #endif Flash.c #include MSP430x16x.h #include flash.h /************************************* Erase ADR: any address to erase period ************************************/ Void FlashErase (unsigned int ADR) { Unsigned char *p0; FCTL1=FWKEY+ERASE; FCTL2=FWKEY+FSSEL_1+FN3+FN4; //FLASH controller clock source for the MCLK, 8MHZ after 25 minutes after the frequency, frequency is 320KHZ FCTL3=FWKEY; / / unlock While (FlashBusy) (==1) / / wait for the FLASH memory to complete the operation ; P0= (unsigned * char) adr; *p0=0; / / period to address any write, erase operation start While (FlashBusy) (==1) / / wait for the FLASH