Changes for version 1.1.0 of the VT132
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23
modem.tex
23
modem.tex
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@ -183,6 +183,17 @@ The following table shows the responses to the \textbf{Query WiFi status} comman
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\newpage
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\section{Telnet}
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\subsection{Enabling Telnet Protocol}
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Telnet protocol is \textbf{not} enabled by default. To enable it, set the S Register S15 to 1 manually:
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\begin{itemize}[leftmargin=1em]
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\item Enable Telnet using: \texttt{ATS15=1}
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\item Disable Telnet using: \texttt{ATS15=0}
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\end{itemize}
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The Telnet protocol is applied to both \textbf{outgoing} connections 'Dialed' with ATD and \textbf{incoming} connections 'Answered' with \texttt{ATA} or Auto-answer.
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\subsection{Telnet options}
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The VT132 supports the following Telnet options:
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@ -202,6 +213,7 @@ Usually you either want an Option completely \textbf{On} (Do/Will) or \textbf{Of
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Setting the supported Options and their default values are defined via specific S Registers \vref{sregister}.
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\newpage
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In summary the defaults are:
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\begin{tabular}{p{6em} | p{5.5em} | p{0.55\textwidth}}
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@ -222,17 +234,6 @@ The \texttt{TERMINAL-TYPE} must be known by the remote system to be recognised.
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When connecting to \texttt{telnetd} on MacOS I use \texttt{vt100+} from the \texttt{terminfo} database which provides support for color over and above the standard
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\texttt{vt100} terminal type, making text applications like \texttt{htop} work as expected and in color.
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\subsection{Enabling Telnet Protocol}
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Telnet protocol is \textbf{not} enabled by default. To enable it, set the S Register S15 to 1 manually:
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\begin{itemize}[leftmargin=1em]
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\item Enable Telnet using: \texttt{ATS15=1}
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\item Disable Telnet using: \texttt{ATS15=0}
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\end{itemize}
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The Telnet protocol is applied to both \textbf{outgoing} connections 'Dialed' with ATD and \textbf{incoming} connections 'Answered' with \texttt{ATA} or Auto-answer.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\newpage
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26
ota.tex
26
ota.tex
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@ -34,16 +34,30 @@ that may conflict with normal operation and these can only be closed and release
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\textbf{Security notes:}
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\begin{itemize}[leftmargin=1em]
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\begin{itemize}[leftmargin=1em,noitemsep]
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\item OTA Updates from GitHub are performed using the HTTPS protocol.
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\item Security certificates (Root CA) for GitHub and Amazon S3 (where GitHub stores release binary files) are embedded in the firmware.
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\item HTTPS requests to servers that use any other Root CA certificate will fail to authenticate.
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\item The VT132 makes this request as an https client and does not implement an http or https server.
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\end{itemize}
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% TODO: need official documentation on this part
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%\section{Updates from local server}
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%
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%To use a local web server to store firmware updates, you can use \texttt{AT+U=}\textit{url} to specify
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%another URL which the VT132 will query for new firmware releases.
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\section{Updates from local server}
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To use a local web server for updating the firmware, place the firmware file (eg. \texttt{VT132.bin}) on a webserver and
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user \texttt{AT+U=}\textit{url} to specify the URL.
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For example, the firmware file is accessible at\\
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\texttt{http://server/VT132.bin}\\
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use these commands:
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\begin{itemize}[leftmargin=1em,noitemsep]
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\item \texttt{AT+U=http://server/VT312.bin} to change the OTA URL
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\item \texttt{AT+U?} to query the version of the local firmware file
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\item \texttt{AT+U\textasciicircum} or \texttt{AT+U!} to update to this file
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\end{itemize}
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The changed URL will be reset to the default (GitHub) URL on the next reboot of the VT132.
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\textbf{Please note:}
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Since the VT132 does only include certificates for GitHub and Amazon S3, it cannot check certificates of HTTPS websites issued by other CAs.
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@ -165,7 +165,7 @@ ESC > & Keypad Numeric Mode \\
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\hline
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\end{tabular}
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\par\noindent\rule{2in}{0.4pt}\\
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\vspace*{\fill}\noindent\rule{2in}{0.4pt}\\
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{\footnotesize
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$\ddagger$ Controls an option on Set-Up A, see section \vref{setupA} \\
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$\dagger$ Controls an option on Set-Up B, see section \vref{setupB}
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27
terminal.tex
27
terminal.tex
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@ -14,9 +14,27 @@ Alternative personalities like ADM-3A or VT-52 are also available.
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\LKeyAlt + \LKeyEsc & Open Quick Settings Menu (left \LKeyAlt only)\\
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\LKeyCtrlX{J} & Send \texttt{LINEFEED} key \\
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\biolinum{ScrollLock} & \texttt{NO} \texttt{SCROLL} function, like \LKeyCtrlX{S} / \LKeyCtrlX{Q} \\
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\LKeyAlt$^\dagger$ + \LKeyPageUp & Open Scroll History (see below) \\
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\hline
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\multicolumn{2}{ l }{In Scroll History:} \\
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\hline
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\LKeyPageUp / \LKeyPageDown & Scroll back/forward one screen \\
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\LKeyUp / \LKeyDown & Scroll back/forward one line \\
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\LKeyEsc & Quit Scroll History and return to current screen \\
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\LKeyShiftX{C} & Clear Scroll History and quit to current screen \\
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\hline
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\end{tabular}
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When scrolling past the bottom of the Scroll History, the current screen will be shown again.
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Any change of screen parameters (80/132 columns, 24/25/30 lines per screen, DEC/CP437 font) will clear the Scroll History.
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\vspace*{\fill}
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\noindent\rule{2in}{0.4pt}\\
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{\footnotesize
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$^\dagger$: left \LKeyAlt key
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}
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\section{The Quick Settings Menu}
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\label{quicksettings}
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@ -54,6 +72,13 @@ The following \textbf{menu options} are available:
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\item Reboot: Reboots the microcontroller of the VT132
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\item Clean NVR: \textit{factory reset} the VT132 by deleting all terminal and modem settings
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\end{itemize}
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\item Display:
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\begin{itemize}[noitemsep]
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\item Lines of history: Enables the Scroll History of 100, 1000 or 5000 (= default) lines.
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\item CRT saver: Enables a screensaver after 10 seconds or 1, 5, 10, 20 or 30 minutes of inactivity.
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\item Clear history: clear the Scroll History.
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\end{itemize}
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\newpage
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\item Terminal Type:
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\begin{itemize}[noitemsep]
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\item Emulation Mode: change personality
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@ -73,5 +98,7 @@ The following \textbf{menu options} are available:
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\item Instead, when switching from ONLINE to LOCAL mode, you can talk directly to the modem (bypassing the connected computer)
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\end{itemize}
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\item On-Line: switch between ONLINE and LOCAL mode (for using the modem, see above)
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\item Save Settings: Write settings to NVRAM (same function as in the Set-Up Screens)
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\item Restore Settings: Load settings from NVRAM
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\end{itemize}
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