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164 lines
4.1 KiB
164 lines
4.1 KiB
<div class="Box fold">
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<h2>Commands: System Functions</h2>
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<div class="Row v">
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<p>
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It's possible to dynamically change the screen title text and action button labels.
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Setting an empty label to a button makes it look disabled. The buttons send ASCII 1-5 when clicked.
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Those changes are not retained after restart.
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</p>
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<table class="ansiref w100">
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<thead><tr><th>Code</th><th>Meaning</th></tr></thead>
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<tbody>
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<tr>
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<td>`\ec`</td>
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<td>
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Clear screen, reset attributes and cursor.
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The screen size, title and button labels remain unchanged.
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</td>
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</tr>
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<tr>
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<td>`\e[8;<i>r</i>;<i>c</i>t`</td>
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<td>Set screen size to _r_ rows and _c_ columns (this is a command borrowed from Xterm)</td>
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</tr>
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<tr>
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<td>`\e[5n`</td>
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<td>
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Query device status, ESPTerm replies with `\e[0n` "device is OK".
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Can be used to check if the terminal has booted up and is ready to receive commands.
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</td>
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</tr>
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<tr>
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<td>_CAN_ (24)</td>
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<td>
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This ASCII code is not a command, but is sent by ESPTerm when it becomes ready to receive commands.
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When this code is received on the UART, it means ESPTerm has restarted and is ready. Use this to detect
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spontaneous restarts which require a full screen repaint.
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</td>
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</tr>
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<tr>
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<td>`\e[<i>n</i> q`</td>
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<td>
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Set cursor style: eg. `\e[3 q` (the space is part of the command!).
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0~-~block~(blink), 1~-~default, 2~-~block~(steady), 3~-~underline~(blink),
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4~-~underline~(steady), 5~-~I-bar~(blink), 6~-~I-bar~(steady). The default style (number 1)
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can be configured in Terminal Settings
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</td>
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</tr>
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<tr>
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<td>`\e]0;<i>t</i>\a`</td>
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<td>Set screen title to _t_ (this is a standard OSC command)</td>
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</tr>
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<tr>
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<td>
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<code>
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\e]<i>8x</i>;<i>t</i>\a
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</code>
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</td>
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<td>
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Set label for button 1-5 (code 81-85) to _t_ - e.g.`\e]81;Yes\a`
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sets the first button text to "Yes".
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e]<i>9x</i>;<i>m</i>\a
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</code>
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</td>
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<td>
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Set message for button 1-5 (code 91-95) to _m_ - e.g.`\e]94;*\a`
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sets the 3rd button to send "*" when pressed. The message can be up to
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10 bytes long.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e]9;<i>t</i>\a
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</code>
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</td>
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<td>
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Show a notification with text _t_. This will be either a desktop notification
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or a pop-up balloon.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[?<i>n</i>s \\
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\e[?<i>n</i>r
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</code>
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</td>
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<td>
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Save (`s`) and restore (`r`) any option set using `CSI ? <i>n</i> h`.
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This is used by some applications to back up the original state before
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making changes.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[?800h \\
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\e[?800l
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</code>
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</td>
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<td>
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Show (`h`) or hide (`l`) the action buttons (the blue buttons under the screen).
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[?801h \\
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\e[?801l
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</code>
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</td>
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<td>
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Show (`h`) or hide (`l`) menu/help links under the screen.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[?2004h \\
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\e[?2004l
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</code>
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</td>
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<td>
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Enable (`h`) or disable (`l`) Bracketed Paste mode.
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This mode makes any text sent using the Upload Tool be preceded by `\e[200\~`
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and terminated by `\e[201\~`. This is useful for distinguishing keyboard input
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from uploads.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[?1049h \\
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\e[?1049l
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</code>
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</td>
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<td>
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Switch to (`h`) or from (`l`) an alternate screen.
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ESPTerm can't implement this fully, so the original screen content is not saved,
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but it will remember the cursor, screen size, terminal title, button labels and messages.
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</td>
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</tr>
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<tr>
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<td>
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<code>
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\e[12h \\
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\e[12l
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</code>
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</td>
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<td>
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Enable (`h`) or disable (`l`) Send-Receive Mode (SRM).
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SRM is the opposite of Local Echo, meaning `\e[12h` disables and `\e[12l` enables Local Echo.
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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