meaning of SCB_SHPR2 register

hotashu — Mon, 26 Oct 2015 06:42:37 GMT

hi,

I don't know the meaning of SCB_SHPR2 register.

I search out SHPR2 in ARM manual-

but still not clear. for example what meaning if set SCB_SHPR2=0x80? what difference if i set it as SCB_SHPR2
=0x40?

Re: meaning of SCB_SHPR2 register

jeremyzhou — Thu, 29 Oct 2015 05:45:58 GMT

Hi Hotas,

The group of SCB_SHPRn registers is used to set the pripority level registers for system exceptions. On the Cortex-M0 processor, only the three OS-related system exceptions have programmable priority levels. Three inculde SVC, PendSV, and SysTick (Fig 1).

About your question, 0x40 and 0x80 is same, as apart from the [32-24] bits area are unimplemented in the SCB_SHPR2 register.

Fig 1

Have a great day,
Ping

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topic Re: meaning of SCB_SHPR2 register in Kinetis Microcontrollers

meaning of SCB_SHPR2 register

Re: meaning of SCB_SHPR2 register