/**
* \brief Update MPU regions.
*
* \return Unused (ANSI-C compatibility).
*/
void MPU_UpdateRegions( uint32_t dwRegionNum, uint32_t dwRegionBaseAddr,
uint32_t dwRegionAttr)
{
/* Raise privilege, the MPU register could be set only in privilege mode */
asm volatile(" swi 0x00 ");
while (!dwRaisePriDone);
dwRaisePriDone = 0;
/* Disable interrupt */
__disable_irq();
/* Clean up data and instruction buffer */
__DSB();
__ISB();
/* Set active region */
MPU_SetRegionNum(dwRegionNum);
/* Disable region */
MPU_DisableRegion();
/* Update region attribute */
MPU_SetRegion( dwRegionBaseAddr, dwRegionAttr);
/* Clean up data and instruction buffer to make the new region taking
effect at once */
__DSB();
__ISB();
/* Enable the interrupt */
__enable_irq();
/* Reset to thread mode */
__set_CONTROL(USER_MODE);
}
/**
* \brief Update MPU regions.
*
* \return Unused (ANSI-C compatibility).
*/
void MPU_UpdateRegions(uint32_t dwRegionNum, uint32_t dwRegionBaseAddr,
uint32_t dwRegionAttr)
{
/* Disable interrupt */
__disable_irq();
/* Clean up data and instruction buffer */
__DSB();
__ISB();
/* Set active region */
MPU_SetRegionNum(dwRegionNum);
/* Disable region */
MPU_DisableRegion();
/* Update region attribute */
MPU_SetRegion(dwRegionBaseAddr, dwRegionAttr);
/* Clean up data and instruction buffer to make the new region taking
effect at once */
__DSB();
__ISB();
/* Enable the interrupt */
__enable_irq();
}
