<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<div>
<blockquote type="cite" class=""><br class="">
<div class="">
<div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">We are using several of the UARTs of the GR712RC (single core running at 25
MHz) with RTEMS. Each of the UARTs is running at 115,200 baud. When receiving incoming packetized data on the UARTs, they do not appear to interleave.</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">I have a few questions that I hope can be answered easily.</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">- How much switching overhead should I expect from the RTEMS interrupt manager
when running the processor at 25 MHz?</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">- How can I measure how much time is being consumed by the interrupt manager
at 25 MHz?</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">- Does RTEMS provide a configuration setting which enables/disables interrupt
nesting?</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">Please advise.</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">Thanks in advance!</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">Robert Klar, Scott Miller</span><br style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">
<span style="color: rgb(33, 33, 33); font-family: 'Segoe UI', 'Segoe WP', 'Segoe UI WPC', Tahoma, Arial, sans-serif; font-size: 15px; background-color: rgb(255, 255, 255);" class="">Southwest Research Institute</span><br class="">
</div>
</div>
</blockquote>
</div>
<br class="">
</body>
</html>