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<p style="color: #777777;">
<a href="https://gitlab.rtems.org/ppisa">Pavel Pisa</a>
started a new
discussion on <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1220#note_149160">bsps/arm/tms570/console/tms570-sci.c</a>:
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<td class="old_line diff-line-num" data-linenumber="313" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
313
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<td class="new_line diff-line-num" data-linenumber="326" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
326
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<td class="line_content" style="padding: inherit;"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;"> <span class="line" data-lang="c"> <span class="n" style="color: #333333;">bauddiv</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span> <span class="n" style="color: #333333;">TMS570_VCLK_HZ</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333333;">baudrate</span> <span class="o" style="font-weight: 600;">/</span> <span class="mi" style="color: #009999;">2</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">/</span> <span class="n" style="color: #333333;">baudrate</span><span class="p">;</span></span>
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<td class="old_line diff-line-num" data-linenumber="314" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
314
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<td class="new_line diff-line-num" data-linenumber="327" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
327
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<td class="line_content" style="padding: inherit;"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;"> <span class="line" data-lang="c"> <span class="n" style="color: #333333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">regs</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">BRS</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333333;">bauddiv</span> <span class="o" style="font-weight: 600;">?</span> <span class="n" style="color: #333333;">bauddiv</span> <span class="o" style="font-weight: 600;">-</span> <span class="mi" style="color: #009999;">1</span> <span class="o" style="font-weight: 600;">:</span> <span class="mi" style="color: #009999;">0</span><span class="p">;</span></span>
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<td class="old_line diff-line-num" data-linenumber="315" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
315
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<td class="new_line diff-line-num" data-linenumber="328" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #ececef; border-right-style: solid; padding: inherit;" align="right" bgcolor="#fbfafd">
328
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<td class="line_content" style="padding: inherit;"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;"> <span class="line" data-lang="c"></span>
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<td class="old_line diff-line-num old" data-linenumber="316" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
316
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<td class="new_line diff-line-num old" data-linenumber="329" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding: inherit;" bgcolor="#fbe9eb"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">-<span class="line" data-lang="c"> <span class="n" style="color: #333333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">regs</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">GCR1</span> <span class="o" style="font-weight: 600;">|=</span> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_SWnRST</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_TXENA</span> <span class="o" style="font-weight: 600;">|</span></span>
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<td class="old_line diff-line-num old" data-linenumber="317" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
317
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<td class="new_line diff-line-num old" data-linenumber="329" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: inherit;" align="right" bgcolor="#f9d7dc">
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<td class="line_content old" style="padding: inherit;" bgcolor="#fbe9eb"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">-<span class="line" data-lang="c"> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_RXENA</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="318" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="329" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
329
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="c1" style="color: #999988; font-style: italic;">// Bring the SCI out of reset and always enable TX</span></span>
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<td class="old_line diff-line-num new" data-linenumber="318" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="330" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
330
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="n" style="color: #333333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">regs</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">GCR1</span> <span class="o" style="font-weight: 600;">|=</span> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_SWnRST</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_TXENA</span><span class="p">;</span></span>
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<td class="old_line diff-line-num new" data-linenumber="318" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="331" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
331
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"></span>
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<td class="old_line diff-line-num new" data-linenumber="318" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="332" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
332
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="c1" style="color: #999988; font-style: italic;">// Check CREAD to see if we should also enable RX</span></span>
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<td class="old_line diff-line-num new" data-linenumber="318" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
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<td class="new_line diff-line-num new" data-linenumber="333" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
333
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span> <span class="p">(</span> <span class="n" style="color: #333333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">c_cflag</span> <span class="o" style="font-weight: 600;">&</span> <span class="n" style="color: #333333;">CREAD</span> <span class="p">)</span> <span class="o" style="font-weight: 600;">!=</span> <span class="mi" style="color: #009999;">0</span> <span class="p">)</span> <span class="p">{</span></span>
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<td class="new_line diff-line-num new" data-linenumber="334" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
334
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="n" style="color: #333333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">regs</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333333;">GCR1</span> <span class="o" style="font-weight: 600;">|=</span> <span class="n" style="color: #333333;">TMS570_SCI_GCR1_RXENA</span><span class="p">;</span></span>
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<td class="new_line diff-line-num new" data-linenumber="335" style="width: 35px; color: rgba(5,5,6,.24); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: inherit;" align="right" bgcolor="#ddfbe6">
335
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<td class="line_content new" style="padding: inherit;" bgcolor="#ecfdf0"><pre style="display: block; font-size: 14px; color: #3a383f; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: inherit; border-radius: 2px; margin: 0; padding: 0; border: inherit solid #dcdcde;">+<span class="line" data-lang="c"> <span class="p">}</span></span>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Rx enable only when <code style="font-size: 90%; color: #18171d; word-wrap: break-word; background-color: #ececef; border-radius: .25rem; margin-top: 0; font-weight: inherit; overflow-wrap: break-word; white-space: break-spaces; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;">CREAD == 1</code> is correct according to to the authoritative spec</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial"><a href="https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/termios.h.html" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/termios.h.html</a></p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">But it should be checked that it is correctly set in BSP and RTEMS termios by default and not cleaned by mistake in some of the termios set callers in RTEMS source tree. It can be problem for some user if the keeping it one or clear by mistake occurs.</p>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">So I am for change, but check rest of the RTEMS sources the first.</p>
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