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PM0223 Datasheet(PDF) 70 Page - STMicroelectronics

Part # PM0223
Description  This programming manual provides information for application and system-level software developers
PDF  110 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0223 Datasheet(HTML) 70 Page - STMicroelectronics

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The STM32L0 Cortex-M0+ Instruction Set
PM0223
70/110
DocID025763 Rev 1
3.7.2
CPS
Change Processor State.
Syntax
CPSID i
CPSIE i
Operation
CPS
changes the PRIMASK special register values. CPSID causes interrupts to be disabled
by setting PRIMASK. CPSIE cause interrupts to be enabled by clearing PRIMASK. See
Exception mask register on page 17 for more information about these registers.
Restrictions
If the current mode of execution is not privileged, then this instruction behaves as a NOP and
does not change the current state of PRIMASK.
Condition flags
This instruction does not change the condition flags.
Examples
CPSID i ; Disable all interrupts except NMI (set PRIMASK.PM)
CPSIE i ; Enable interrupts (clear PRIMASK.PM)



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