ode. The processor mode is controlled with the <b>#define OS_RUNPRIV</b>.</p>
<p>In unprivileged processor mode, the software:</p>
<ul>
<li>has limited access to the MSR and MRS instructions, and cannot use the CPS instruction.</li>
<li>cannot access the system timer, NVIC, or system control block.</li>
<li>might have restricted access to memory or peripherals.</li>
</ul>
<p>In privileged processor mode the software can use all the instructions and has access to all resources.</p>
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