Modification of mbed-src library only for STM32F030F4, very cheap microcontroller in 20-Pin TSSOP package, with 16Kbytes of Flash and 4Kbytes of Ram. **Target for online compilator must be Nucleo 32F030R8.**

Dependents:   STM32F031_blink_LED_2

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xPSR_Type Union Reference

xPSR_Type Union Reference
[Status and Control Registers]

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

#include <core_cm0.h>

Data Fields

struct {
   uint32_t   ISR:9
   uint32_t   _reserved0:15
   uint32_t   GE:4
   uint32_t   _reserved1:4
   uint32_t   T:1
   uint32_t   IT:2
   uint32_t   Q:1
   uint32_t   V:1
   uint32_t   C:1
   uint32_t   Z:1
   uint32_t   N:1
b
uint32_t w

Detailed Description

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

Definition at line 231 of file core_cm0.h.


Field Documentation

uint32_t _reserved0

bit: 9..23 Reserved

bit: 9..15 Reserved

Definition at line 237 of file core_cm0.h.

uint32_t _reserved1

bit: 20..23 Reserved

Definition at line 241 of file core_cm0.h.

struct { ... } b

Structure used for bit access

uint32_t C

bit: 29 Carry condition code flag

Definition at line 247 of file core_cm0.h.

uint32_t GE

bit: 16..19 Greater than or Equal flags

Definition at line 240 of file core_cm0.h.

uint32_t ISR

bit: 0.. 8 Exception number

Definition at line 235 of file core_cm0.h.

uint32_t IT

bit: 25..26 saved IT state (read 0)

Definition at line 244 of file core_cm0.h.

uint32_t N

bit: 31 Negative condition code flag

Definition at line 249 of file core_cm0.h.

uint32_t Q

bit: 27 Saturation condition flag

Definition at line 245 of file core_cm0.h.

uint32_t T

bit: 24 Thumb bit (read 0)

Definition at line 243 of file core_cm0.h.

uint32_t V

bit: 28 Overflow condition code flag

Definition at line 246 of file core_cm0.h.

uint32_t w

Type used for word access

Definition at line 251 of file core_cm0.h.

uint32_t Z

bit: 30 Zero condition code flag

Definition at line 248 of file core_cm0.h.