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<div><span></span>before i use the rtems , i just write the bare-metal code. </div><div><br></div><div>now i want to use the rtems. but i do not know how to add the original bare-metal interrupt routine into the rtems program.</div><div><br></div><div style="text-align: justify;">is it has conflict betweent the bare-metal code and the rtems code<font color="#666666" face="Tahoma, Arial"><span style="line-height: 24px;">? </span></font></div><div style="text-align: justify;"><font color="#666666" face="Tahoma, Arial"><span style="line-height: 24px;"><br></span></font></div><div style="text-align: justify;"><font color="#666666" face="Tahoma, Arial"><span style="line-height: 24px;"><b>I has no idea about how to use my old code into the rtems code . in my old code ,i has some interrupt routine which need nested. and has a background routine to process comunication .</b></span></font></div>
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<div><span><div style="MARGIN: 10px; FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div>bin.wang@qkmtech.com</div></div></span></div>
<blockquote style="margin-top: 0px; margin-bottom: 0px; margin-left: 0.5em;"><div> </div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style="PADDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From:</b> <a href="mailto:chrisj@rtems.org">Chris Johns</a></div><div><b>Date:</b> 2017-12-29 14:21</div><div><b>To:</b> <a href="mailto:bin.wang@qkmtech.com">bin.wang@qkmtech.com</a>; <a href="mailto:users@rtems.org">Users</a></div><div><b>Subject:</b> Re: smp support</div></div></div><div><div>On 29/12/17 12:16 pm, bin.wang@qkmtech.com wrote:</div>
<div>> thanks a lot . </div>
<div>> </div>
<div>> i have another question , if i use the smp, can i use the interrupt of rtems?</div>
<div>> which i want to interrupt period of hard real time of 125us. </div>
<div>> </div>
<div> </div>
<div>Yes you can.</div>
<div> </div>
<div>> i do not know the difference of the bare-metal interrupt and the rtems interrupt</div>
<div>> . is the rtems interrupt have performance loss of the hard real-time?</div>
<div> </div>
<div>The interrupt overhead will have the same overhead each time and its</div>
<div>deterministic behaviour will depend on the other interrupts in your system and</div>
<div>their priority. The performance will depend on what you need to do in the interrupt.</div>
<div> </div>
<div>> </div>
<div>> what the schedule method of smp use? is it can affect the interrupt performance?</div>
<div>> </div>
<div> </div>
<div>That depends on your application.</div>
<div> </div>
<div>Chris</div>
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