CC2530内部flash数据丢失问题求教

您可以在IAR内追踪该函数，osal_nv_init 主要是调用了(void)initNV(); 

/*********************************************************************
* @fn osal_nv_init
*
* @brief Initialize NV service.
*
* @param p - Not used.
*
* @return none
*/
void osal_nv_init( void *p )
{
(void)p; // Suppress Lint warning.
(void)initNV(); // Always returns TRUE after pages have been erased.
}

而(void)initNV(); 的定义可以在OSAL_Nv.c查找到

/*********************************************************************
* @fn initNV
*
* @brief Initialize the NV flash pages.
*
* @param none
*
* @return TRUE
*/
static uint8 initNV( void )
{
osalNvPgHdr_t pgHdr;
uint8 oldPg = OSAL_NV_PAGE_NULL;
uint8 findDups = FALSE;
uint8 pg;

pgRes = OSAL_NV_PAGE_NULL;

for ( pg = OSAL_NV_PAGE_BEG; pg <= OSAL_NV_PAGE_END; pg++ )
{
HalFlashRead(pg, OSAL_NV_PAGE_HDR_OFFSET, (uint8 *)(&pgHdr), OSAL_NV_HDR_SIZE);

if ( pgHdr.active == OSAL_NV_ERASED_ID )
{
if ( pgRes == OSAL_NV_PAGE_NULL )
{
pgRes = pg;
}
else
{
setPageUse( pg, TRUE );
}
}
// An Xfer from this page was in progress.
else if ( pgHdr.xfer != OSAL_NV_ERASED_ID )
{
oldPg = pg;
}
}

// If a page compaction was interrupted before the old page was erased.
if ( oldPg != OSAL_NV_PAGE_NULL )
{
/* Interrupted compaction before the target of compaction was put in use;
* so erase the target of compaction and start again.
*/
if ( pgRes != OSAL_NV_PAGE_NULL )
{
erasePage( pgRes );
(void)compactPage( oldPg, OSAL_NV_ITEM_NULL );
}
/* Interrupted compaction after the target of compaction was put in use,
* but before the old page was erased; so erase it now and create a new reserve page.
*/
else
{
erasePage( oldPg );
pgRes = oldPg;
}
}
else if ( pgRes != OSAL_NV_PAGE_NULL )
{
erasePage( pgRes ); // The last page erase could have been interrupted by a power-cycle.
}
/* else if there is no reserve page, COMPACT_PAGE_CLEANUP() must have succeeded to put the old
* reserve page (i.e. the target of the compacted items) into use but got interrupted by a reset
* while trying to erase the page to be compacted. Such a page should only contain duplicate items
* (i.e. all items will be marked 'Xfer') and thus should have the lost count equal to the page
* size less the page header.
*/

for ( pg = OSAL_NV_PAGE_BEG; pg <= OSAL_NV_PAGE_END; pg++ )
{
// Calculate page offset and lost bytes - any "old" item triggers an N^2 re-scan from start.
if ( initPage( pg, OSAL_NV_ITEM_NULL, findDups ) != OSAL_NV_ITEM_NULL )
{
findDups = TRUE;
pg = (OSAL_NV_PAGE_BEG - 1); // Pre-decrement so that loop increment will start over at zero.
continue;
}
}

if (findDups)
{
// Final pass to calculate page lost after invalidating duplicate items.
for ( pg = OSAL_NV_PAGE_BEG; pg <= OSAL_NV_PAGE_END; pg++ )
{
(void)initPage( pg, OSAL_NV_ITEM_NULL, FALSE );
}
}

if ( pgRes == OSAL_NV_PAGE_NULL )
{
uint8 idx, mostLost = 0;

for ( idx = 0; idx < OSAL_NV_PAGES_USED; idx++ )
{
// Is this the page that was compacted?
if (pgLost[idx] == (OSAL_NV_PAGE_SIZE - OSAL_NV_PAGE_HDR_SIZE))
{
mostLost = idx;
break;
}
/* This check is not expected to be necessary because the above test should always succeed
* with an early loop exit.
*/
else if (pgLost[idx] > pgLost[mostLost])
{
mostLost = idx;
}
}

pgRes = mostLost + OSAL_NV_PAGE_BEG;
erasePage( pgRes ); // The last page erase had been interrupted by a power-cycle.
}

return TRUE;
}