Module cortex_m::register

Processor core registers

The following registers can only be accessed in PRIVILEGED mode:

• BASEPRI
• CONTROL
• FAULTMASK
• MSP
• PRIMASK

The rest of registers (see list below) can be accessed in either, PRIVILEGED or UNPRIVILEGED, mode.

• APSR
• LR
• PC
• PSP

The following registers are NOT available on ARMv6-M devices (thumbv6m-none-eabi):

• BASEPRI
• FAULTMASK

The following registers are only available for devices with an FPU:

• FPSCR

References

• Cortex-M* Devices Generic User Guide - Section 2.1.3 Core registers

Modules

• basepri
  Base Priority Mask Register
• basepri_max
  Base Priority Mask Register (conditional write)
• control
  Control register
• faultmask
  Fault Mask Register
• msp
  Main Stack Pointer
• primask
  Priority mask register
• psp
  Process Stack Pointer