bool Interrupt_disableMaster(void)
{
//
// Disable processor interrupts.
//
return (CPU_cpsid());
}
/*
* ======== PowerMSP432_policyFxn ========
*/
void PowerMSP432_policyFxn()
{
UInt constraints;
Bool slept = false;
UInt taskKey;
UInt swiKey;
/* disable interrupts */
CPU_cpsid();
/* disable Swi and Task scheduling */
swiKey = Swi_disable();
taskKey = Task_disable();
/* query the declared constraints */
constraints = Power_getConstraintMask();
/*
* Check if can go to a sleep state, starting with the deepest level.
* Do not go to a sleep state if a lesser sleep state is disallowed.
*/
/* check if can go to DEEPSLEEP_1 */
if ((constraints & ((1 << PowerMSP432_DISALLOW_SLEEP) |
(1 << PowerMSP432_DISALLOW_DEEPSLEEP_0) |
(1 << PowerMSP432_DISALLOW_DEEPSLEEP_1))) == 0) {
/* go to DEEPSLEEP_1 */
Power_sleep(PowerMSP432_DEEPSLEEP_1);
/* set 'slept' to true*/
slept = true;
}
/* if didn't sleep yet, now check if can go to DEEPSLEEP_0 */
if (!slept && ((constraints & ((1 << PowerMSP432_DISALLOW_SLEEP) |
(1 << PowerMSP432_DISALLOW_DEEPSLEEP_0))) == 0)) {
/* go to DEEPSLEEP_0 */
Power_sleep(PowerMSP432_DEEPSLEEP_0);
/* set 'slept' to true*/
slept = true;
}
/* if didn't sleep yet, now check if can go to SLEEP */
if (!slept && ((constraints & (1 << PowerMSP432_DISALLOW_SLEEP)) == 0)) {
/* go to SLEEP */
Power_sleep(PowerMSP432_SLEEP);
/* set 'slept' to true*/
slept = true;
}
/* re-enable interrupts */
CPU_cpsie();
/* restore Swi scheduling */
Swi_restore(swiKey);
/* restore Task scheduling */
Task_restore(taskKey);
/* if didn't sleep yet, just do WFI */
if (!slept) {
__asm(" wfi");
}
}