SAM-G53N_14 Datasheet, PDF (193/949 Pages) ATMEL Corporation – Atmel | SMART ARM-based Flash MCU

11.6.12.2CPS
Change Processor State.
Syntax
CPSeffect iflags
where:
effect
is one of:
IE
Clears the special purpose register.
ID
Sets the special purpose register.
iflags
is a sequence of one or more flags:
i
Set or clear PRIMASK.
f
Set or clear FAULTMASK.
Operation
CPS changes the PRIMASK and FAULTMASK special register values. See “Exception Mask Registers” for more
information about these registers.
Restrictions
The restrictions are:
 Use CPS only from privileged software, it has no effect if used in unprivileged software
 CPS cannot be conditional and so must not be used inside an IT block.
Condition Flags
This instruction does not change the condition flags.
Examples
CPSID i ; Disable interrupts and configurable fault handlers (set PRIMASK)
CPSID f ; Disable interrupts and all fault handlers (set FAULTMASK)
CPSIE i ; Enable interrupts and configurable fault handlers (clear PRIMASK)
CPSIE f ; Enable interrupts and fault handlers (clear FAULTMASK)
SAM G53G / SAM G53N [DATASHEET]
Atmel-11240E-ATARM-SAM-G53G-SAM-G53N-Datasheet_17-Oct-14
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