uint32_t program( uint32_t *address, uint32_t *buffer ) // size is 256 bytes
{
uint32_t FlashSectorNum ;
uint32_t flash_cmd = 0 ;
uint32_t i ;
if ( (uint32_t) address >= 0x00408000 )
{
return 1 ;
}
// Always initialise this here, setting a default doesn't seem to work
IAP_Function = (uint32_t (*)(uint32_t, uint32_t)) *(( uint32_t *)0x00800008) ;
FlashSectorNum = (uint32_t) address ;
FlashSectorNum >>= 8 ; // page size is 256 bytes
FlashSectorNum &= 2047 ; // max page number
/* Send data to the sector here */
for ( i = 0 ; i < 64 ; i += 1 )
{
*address++ = *buffer++ ;
}
/* build the command to send to EEFC */
flash_cmd = (0x5A << 24) | (FlashSectorNum << 8) | 0x03 ; //AT91C_MC_FCMD_EWP ;
__disable_irq() ;
/* Call the IAP function with appropriate command */
i = IAP_Function( 0, flash_cmd ) ;
__enable_irq() ;
return i ;
}
/**************************************************************************//**
\brief Unlocks page in Flash
\param[in] page - page number to unlock
******************************************************************************/
void flashUnlockPage(uint16_t page)
{
uint32_t cmd;
cmd = FLASH_WRITE_ENABLE_MAGIC | FLASH_CMD_CLB | ((uint32_t)page << 8);
IAP_Function = (uint32_t (*)(uint32_t, uint32_t)) *((uint32_t *)IAP_ADDRESS);
IAP_Function(0, cmd);
}
uint32_t readLockBits()
{
// Always initialise this here, setting a default doesn't seem to work
IAP_Function = (uint32_t (*)(uint32_t, uint32_t)) *(( uint32_t *)0x00800008);
uint32_t flash_cmd = (0x5A << 24) | 0x0A;//AT91C_MC_FCMD_GLB ;
__disable_irq();
(void) IAP_Function( 0, flash_cmd );
__enable_irq();
return EFC->EEFC_FRR;
}
/**************************************************************************//**
\brief Writes page to flash optionally locking Flash after write
\param[in] page - page number to write to
\param[in] lock - true if locking is required after write
******************************************************************************/
void flashWritePage(uint16_t page, bool lock)
{
uint32_t cmd;
if (lock)
cmd = FLASH_WRITE_ENABLE_MAGIC | FLASH_CMD_EWPL | ((uint32_t)page << 8);
else
cmd = FLASH_WRITE_ENABLE_MAGIC | FLASH_CMD_EWP | ((uint32_t)page << 8);
IAP_Function = (uint32_t (*)(uint32_t, uint32_t)) *((uint32_t *)IAP_ADDRESS);
IAP_Function(0, cmd);
}
void clearLockBits()
{
uint32_t i;
uint32_t flash_cmd = 0;
// Always initialise this here, setting a default doesn't seem to work
IAP_Function = (uint32_t (*)(uint32_t, uint32_t)) *(( uint32_t *)0x00800008);
for ( i = 0; i < 16; i += 1 )
{
flash_cmd = (0x5A << 24) | ((128*i) << 8) | 0x09; //AT91C_MC_FCMD_CLB ;
__disable_irq();
/* Call the IAP function with appropriate command */
(void) IAP_Function( 0, flash_cmd );
__enable_irq();
}
}
