Hi!
We are trying to write to info-mem. But our program
hangs while erasing sector. Can anyone help?
Best Regards,
Rajat.
Source code:
#include<msp430x14x.h>
#include<math.h>
#include<signal.h>
unsigned char *ucptrSeg1_Address;
unsigned char *ucptrSeg2_Address;
unsigned char ucFIndex;
void vfnWriteData2Flash(unsigned char
*ucptrFlashAddress,
unsigned char *ucptrData,
unsigned char ucNoOfBytes);
volatile unsigned int __attribute__ ((section
(".infomem")))
Iarray[20];
volatile unsigned char __attribute__ ((section
(".infomem")))
Carray[20];
int main(void)
{
int num=1;
vfnWriteData2Flash((unsigned char*)Iarray,(unsigned
char *)&num, (char)sizeof(num));
while(1);
return(0);
}
void vfnWriteData2Flash(unsigned char
*ucptrFlashAddress,
unsigned char *ucptrData,
unsigned char ucNoOfBytes)
{
dint();
FCTL2 = FWKEY + FSSEL_1 + FN2 + FN4; // MCLK IS
SELECTED
if(FCTL3 & LOCK)
FCTL3 = FWKEY + (FCTL3 & 0x00ef); // make
Lock = 0,if it is set
while(FCTL3 & BUSY); // wait till BUSY
= 0
// erase SegB
FCTL1 = FWKEY + ERASE; // SET Erase bit
*(unsigned char*)0x1000 = 0x00;
while(FCTL3 & BUSY); // wait till BUSY
= 0
// Move all the data in Data segA to Backup segB
FCTL1 = FWKEY + WRT; // SET BLKWRT bit
ucptrSeg1_Address = (unsigned char *)0x1080;
ucptrSeg2_Address = (unsigned char *)0x1000;
for(ucFIndex=0;ucFIndex < 128;ucFIndex++)
*(ucptrSeg2_Address++) =
*(ucptrSeg1_Address++);
FCTL1 = FWKEY;
while(FCTL3 & BUSY); // wait till Write
operation is going on
// erase SegA
FCTL1 = FWKEY + ERASE; // SET Erase bit
*(unsigned char*)0x1080 = 0x00;
while(FCTL3 & BUSY); // wait till BUSY
= 0
// move back all the data from SegB from SegA
and change the data
FCTL1 = FWKEY + WRT; // SET BLKWRT bit
ucptrSeg1_Address = (unsigned char *)0x1080;
ucptrSeg2_Address = (unsigned char *)0x1000;
for(ucFIndex=0;ucFIndex < 128;ucFIndex++)
{
if(ucptrSeg1_Address == ucptrFlashAddress)
{
ucNoOfBytes += ucFIndex;
while(ucFIndex < ucNoOfBytes)
{
*(ucptrSeg1_Address++) = *(ucptrData++);
ucFIndex++;
ucptrSeg2_Address++;
}
ucFIndex--;
}
else
*(ucptrSeg1_Address++) =
*(ucptrSeg2_Address++);
}
FCTL1 = FWKEY;
while(FCTL3 & BUSY); // wait till Write
operation is going on
FCTL3 = FWKEY + LOCK; // make Lock = 1,
avoiding erase or write
eint();
}
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