Status and Control Registers

Core Register type definitions. More...

Topics
	Nested Vectored Interrupt Controller (NVIC)
	Type definitions for the NVIC Registers.

Data Structures
union	APSR_Type
	Union type to access the Application Program Status Register (APSR). More...
union	IPSR_Type
	Union type to access the Interrupt Program Status Register (IPSR). More...
union	xPSR_Type
	Union type to access the Special-Purpose Program Status Registers (xPSR). More...
union	CONTROL_Type
	Union type to access the Control Registers (CONTROL). More...
struct	APSR_Type.b
struct	IPSR_Type.b
struct	xPSR_Type.b
struct	CONTROL_Type.b

Detailed Description

Core Register type definitions.

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Data Structure Documentation

APSR_Type

union APSR_Type

Union type to access the Application Program Status Register (APSR).

Data Fields
struct APSR_Type	b	Structure used for bit access
uint32_t	w	Type used for word access
struct APSR_Type.b	b	Structure used for bit access

IPSR_Type

union IPSR_Type

Union type to access the Interrupt Program Status Register (IPSR).

Data Fields
struct IPSR_Type	b	Structure used for bit access
uint32_t	w	Type used for word access
struct IPSR_Type.b	b	Structure used for bit access

xPSR_Type

union xPSR_Type

Union type to access the Special-Purpose Program Status Registers (xPSR).

Data Fields
struct xPSR_Type	b	Structure used for bit access
uint32_t	w	Type used for word access
struct xPSR_Type.b	b	Structure used for bit access

CONTROL_Type

union CONTROL_Type

Union type to access the Control Registers (CONTROL).

Data Fields
struct CONTROL_Type	b	Structure used for bit access
uint32_t	w	Type used for word access
struct CONTROL_Type.b	b	Structure used for bit access

APSR_Type.b

struct APSR_Type.b

Data Fields
uint32_t	_reserved0:27	bit: 0..26 Reserved
uint32_t	Q:1	bit: 27 Saturation condition flag
uint32_t	V:1	bit: 28 Overflow condition code flag
uint32_t	C:1	bit: 29 Carry condition code flag
uint32_t	Z:1	bit: 30 Zero condition code flag
uint32_t	N:1	bit: 31 Negative condition code flag
uint32_t	_reserved0:27	bit: 0..26 Reserved
uint32_t	Q:1	bit: 27 Saturation condition flag
uint32_t	V:1	bit: 28 Overflow condition code flag
uint32_t	C:1	bit: 29 Carry condition code flag
uint32_t	Z:1	bit: 30 Zero condition code flag
uint32_t	N:1	bit: 31 Negative condition code flag

IPSR_Type.b

struct IPSR_Type.b

Data Fields
uint32_t	ISR:9	bit: 0.. 8 Exception number
uint32_t	_reserved0:23	bit: 9..31 Reserved
uint32_t	ISR:9	bit: 0.. 8 Exception number
uint32_t	_reserved0:23	bit: 9..31 Reserved

xPSR_Type.b

struct xPSR_Type.b

Data Fields
uint32_t	ISR:9	bit: 0.. 8 Exception number
uint32_t	_reserved0:15	bit: 9..23 Reserved
uint32_t	T:1	bit: 24 Thumb bit (read 0)
uint32_t	IT:2	bit: 25..26 saved IT state (read 0)
uint32_t	Q:1	bit: 27 Saturation condition flag
uint32_t	V:1	bit: 28 Overflow condition code flag
uint32_t	C:1	bit: 29 Carry condition code flag
uint32_t	Z:1	bit: 30 Zero condition code flag
uint32_t	N:1	bit: 31 Negative condition code flag
uint32_t	ISR:9	bit: 0.. 8 Exception number
uint32_t	_reserved0:15	bit: 9..23 Reserved
uint32_t	T:1	bit: 24 Thumb bit (read 0)
uint32_t	IT:2	bit: 25..26 saved IT state (read 0)
uint32_t	Q:1	bit: 27 Saturation condition flag
uint32_t	V:1	bit: 28 Overflow condition code flag
uint32_t	C:1	bit: 29 Carry condition code flag
uint32_t	Z:1	bit: 30 Zero condition code flag
uint32_t	N:1	bit: 31 Negative condition code flag

CONTROL_Type.b

struct CONTROL_Type.b

Data Fields
uint32_t	nPRIV:1	bit: 0 Execution privilege in Thread mode
uint32_t	SPSEL:1	bit: 1 Stack to be used
uint32_t	FPCA:1	bit: 2 FP extension active flag
uint32_t	_reserved0:29	bit: 3..31 Reserved
uint32_t	nPRIV:1	bit: 0 Execution privilege in Thread mode
uint32_t	SPSEL:1	bit: 1 Stack to be used
uint32_t	FPCA:1	bit: 2 FP extension active flag
uint32_t	_reserved0:29	bit: 3..31 Reserved