Fix LaTeX manual build errors for LuaLaTeX.
Rename conflicting TikZ step style to drstep, add missing ch:firmware label, and use TeX Gyre Heros font fallback instead of Linux Biolinum O. Co-authored-by: Cursor <cursoragent@cursor.com>
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Cursor
@@ -114,17 +114,17 @@ the DSP program and writes it into RAM after each reset.
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\begin{figure}[htbp]
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\centering
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\begin{tikzpicture}[
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step/.style={draw, rounded corners, minimum width=9.5cm,
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drstep/.style={draw, rounded corners, minimum width=9.5cm,
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minimum height=0.9cm, align=center, font=\small},
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>={Latex}, node distance=3mm]
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\node[step, fill=black!6] (rst) {Assert RESET\# (10\,ms), release};
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\node[step, fill=black!6, below=of rst] (i2c)
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\node[drstep, fill=black!6] (rst) {Assert RESET\# (10\,ms), release};
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\node[drstep, fill=black!6, below=of rst] (i2c)
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{Create I\textsuperscript{2}C master @ 100\,kHz, address 0x34};
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\node[step, fill=black!8, below=of i2c] (dl)
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\node[drstep, fill=black!8, below=of i2c] (dl)
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{Replay \texttt{DspProgram} from flash or embedded export};
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\node[step, fill=black!6, below=of dl] (ready)
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\node[drstep, fill=black!6, below=of dl] (ready)
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{\texttt{Adau1701Driver::isBooted()} = true};
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\node[step, fill=black!10, below=of ready] (prof)
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\node[drstep, fill=black!10, below=of ready] (prof)
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{\texttt{AudioService::loadAndApply()} --- safeload user profile};
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\foreach \a/\b in {rst/i2c, i2c/dl, dl/ready, ready/prof} {
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\draw[->] (\a) -- (\b);
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@@ -190,8 +190,8 @@ seek failure.
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\begin{drcode}[JSON]
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{"direction":"up"}
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\end{drcode}
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Use \texttt{"down"} for downward seek. Omit the body or send \texttt{{}}
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for upward seek (backward compatible).
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Use \texttt{"down"} for downward seek. Omit the body or send an empty JSON
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object (\texttt{\{\}}) for upward seek (backward compatible).
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\end{drnote}
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\subsection{\texttt{GET /api/audio/profile}}
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@@ -90,17 +90,17 @@ Line-In path is ready before Wi-Fi starts.
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\begin{figure}[htbp]
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\centering
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\begin{tikzpicture}[
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step/.style={draw, rounded corners, minimum width=9.5cm,
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drstep/.style={draw, rounded corners, minimum width=9.5cm,
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minimum height=0.9cm, align=center, font=\small},
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>={Latex}, node distance=3mm]
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\node[step, fill=black!6] (sys) {SYS\_CTL high, RESET\# pulse};
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\node[step, fill=black!6, below=of sys] (uart)
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\node[drstep, fill=black!6] (sys) {SYS\_CTL high, RESET\# pulse};
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\node[drstep, fill=black!6, below=of sys] (uart)
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{Install UART2 @ 115200, RTS/CTS};
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\node[step, fill=black!8, below=of uart] (at)
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\node[drstep, fill=black!8, below=of uart] (at)
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{Send \texttt{AT} --- expect OK};
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\node[step, fill=black!10, below=of at] (aux)
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\node[drstep, fill=black!10, below=of at] (aux)
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{Send \texttt{AT+AUXCFG=1} --- expect OK (Line-In)};
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\node[step, fill=black!6, below=of aux] (done)
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\node[drstep, fill=black!6, below=of aux] (done)
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{\texttt{Bt1035Driver::isBooted()} = true};
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\foreach \a/\b in {sys/uart, uart/at, at/aux, aux/done} {
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\draw[->] (\a) -- (\b);
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@@ -12,6 +12,7 @@
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% ============================================================
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\chapter{Firmware Architecture}
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\label{ch:firmware}
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\label{sec:firmware-architecture}
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The DigiRadio firmware runs on the ESP32-S3 and orchestrates three
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@@ -4,7 +4,7 @@
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DigiRadio is an open-source, high-fidelity digital radio receiver. It
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receives DAB+ and FM broadcasts, processes the audio through a dedicated
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signal processor, and streams the result over Bluetooth using a
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high-resolution codec. Firmware~0.8.3 on \texttt{main} provides encrypted
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high-resolution codec. Firmware~0.8.4 on \texttt{main} provides encrypted
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storage, a tabbed configuration web UI, and the full REST API documented
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in Chapter~\ref{ch:api}. The whole project --- hardware and firmware --- is
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released as open source for the maker and audio community to study,
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@@ -114,21 +114,21 @@ the \texttt{FLASH\_LOAD} path used by boards with a pre-programmed SST25V.
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\begin{figure}[htbp]
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\centering
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\begin{tikzpicture}[
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step/.style={draw, rounded corners, minimum width=9cm,
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drstep/.style={draw, rounded corners, minimum width=9cm,
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minimum height=0.9cm, align=center, font=\small},
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>={Latex}, node distance=3mm]
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\node[step, fill=black!6] (rst) {Hardware reset (RST\#)};
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\node[step, fill=black!6, below=of rst] (pu)
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\node[drstep, fill=black!6] (rst) {Hardware reset (RST\#)};
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\node[drstep, fill=black!6, below=of rst] (pu)
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{POWER\_UP (crystal / clock args)};
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\node[step, fill=black!6, below=of pu] (li1) {LOAD\_INIT};
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\node[step, fill=black!8, below=of li1] (patch)
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\node[drstep, fill=black!6, below=of pu] (li1) {LOAD\_INIT};
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\node[drstep, fill=black!8, below=of li1] (patch)
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{HOST\_LOAD \texttt{rom\_patch\_016.bin} (124 B chunks)};
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\node[step, fill=black!6, below=of patch] (li2) {LOAD\_INIT};
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\node[step, fill=black!8, below=of li2] (img)
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\node[drstep, fill=black!6, below=of patch] (li2) {LOAD\_INIT};
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\node[drstep, fill=black!8, below=of li2] (img)
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{HOST\_LOAD \texttt{dab\_} or \texttt{fm\_firmware.bin}
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(2044 B chunks)};
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\node[step, fill=black!6, below=of img] (boot) {BOOT};
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\node[step, fill=black!10, below=of boot] (cfg)
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\node[drstep, fill=black!6, below=of img] (boot) {BOOT};
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\node[drstep, fill=black!10, below=of boot] (cfg)
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{Properties: I\textsuperscript{2}S 44.1 kHz, RDS/DAB FE, volume};
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\foreach \a/\b in {rst/pu, pu/li1, li1/patch, patch/li2, li2/img,
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img/boot, boot/cfg} {
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@@ -35,11 +35,20 @@
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\renewcommand{\familydefault}{\sfdefault} % Biolinum as body (Optima-like)
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\else
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\RequirePackage{fontspec}
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% Real Optima on macOS; change the name if yours differs.
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\defaultfontfeatures{Ligatures=TeX}
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% Real Optima on macOS; TeX Gyre Heros ships with TeX Live as fallback.
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\IfFontExistsTF{Optima}{%
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\setmainfont{Optima}%
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}{%
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\setmainfont{Linux Biolinum O}% fallback if Optima not installed
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\IfFontExistsTF{TeX Gyre Heros}{%
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\setmainfont{TeX Gyre Heros}%
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}{%
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\IfFontExistsTF{TeXGyreHeros}{%
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\setmainfont{TeXGyreHeros}%
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}{%
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\setmainfont{Latin Modern Sans}%
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}%
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}%
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}
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\fi
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