CMSIS-CORE: xPSR_Type Union Reference

| CMSIS-CORE Version 4.30 CMSIS-CORE support for Cortex-M processor-based devices

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xPSR_Type Union Reference

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

## Data Fields

struct {
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
} | b
| Structure used for bit access.
uint32_t | w
| Type used for word access.

## Field Documentation

uint32_t xPSR_Type::_reserved0

struct { ... } xPSR_Type::b

uint32_t xPSR_Type::C

uint32_t xPSR_Type::ISR

uint32_t xPSR_Type::IT

uint32_t xPSR_Type::N

uint32_t xPSR_Type::Q

uint32_t xPSR_Type::T

uint32_t xPSR_Type::V

uint32_t xPSR_Type::w

uint32_t xPSR_Type::Z