Add auto-dismiss-load-dialog service patch

oc-patches/services/auto-dismiss-load-dialog/README.md

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+# auto-dismiss-load-dialog
+
+Auto-dismisses the "Load filament complete" modal that appears on the
+Centauri Carbon's touchscreen at the end of a filament-load cycle. The
+print queue is blocked while the dialog is up, so without this you have
+to walk to the printer, tap OK, and walk back to your computer to start
+the next print.
+
+The unload-complete dialog **does not** appear (no auto-dismiss needed
+there); only loads produce a blocking confirmation.
+
+## How it works
+
+Three pieces, all installed under `/opt`:
+
+| File | Role |
+|---|---|
+| `/opt/sbin/synth-tap` | bash + `xxd` script that synthesises one touchscreen tap by writing `input_event` structs to `/dev/input/event1` |
+| `/opt/sbin/auto-dismiss-daemon` | `tail -F`s `/board-resource/log1`, watches for the load-complete signal, then calls `synth-tap` |
+| `/opt/etc/init.d/S99auto-dismiss` | entware service script (start/stop/restart/status), auto-started on boot via `rc.unslung` |
+
+Detection signal — three log-line states from `/board-resource/log1`:
+
+```
+[app][...]:feed state change : 0 -> 1     ← load OR unload starts; reset
+[gcode][...]:single_command<M729>         ← cycle is a load (load-only gcode)
+[gcode][...]:single_command<M82>          ← gcode complete; dialog appears.
+                                            If is_load, tap.
+```
+
+`M729` was identified as the cleanest load-only discriminator by
+diffing the load and unload gcode sequences. Unloads run
+`G1 E-60 F240` + `SET_MIN_EXTRUDE_TEMP S0/RESET`; loads run
+`G1 E120 F240` + `M729`. `M82` (set absolute extrude) fires at the
+end of *both* cycles, but only loads precede it with `M729`, so the
+is_load gate keeps the unload cycle untapped.
+
+Trigger choice came from a live capture: `feed state change : 1 -> 0`
+fires *after* the dialog is dismissed (it's downstream of the tap),
+so it's useless as a trigger — would create chicken-and-egg. `M82`
+fires at the moment the dialog appears.
+
+Tap synthesis matches the gt9xxnew_ts driver's recorded sequence
+(captured from a real user tap on V0.3.0-o):
+
+```
+EV_KEY  BTN_TOUCH=1
+EV_ABS  ABS_MT_POSITION_X = 289      ← OK button on the load-complete dialog
+EV_ABS  ABS_MT_POSITION_Y = 182
+EV_ABS  ABS_MT_TOUCH_MAJOR = 20
+EV_ABS  ABS_MT_WIDTH_MAJOR = 20
+EV_ABS  ABS_MT_TRACKING_ID = 0
+EV_SYN  SYN_MT_REPORT
+EV_SYN  SYN_REPORT
+sleep 150 ms
+EV_KEY  BTN_TOUCH=0
+EV_SYN  SYN_REPORT
+```
+
+## Configuration
+
+The daemon reads three env vars (with defaults):
+
+| Var | Default | Notes |
+|---|---|---|
+| `LOG` | `/board-resource/log1` | path to `app`'s log file |
+| `TAP_X` | `289` | OK-button X (gt9xxnew coordinate space) |
+| `TAP_Y` | `182` | OK-button Y |
+| `SETTLE_S` | `0.7` | settle delay between detection and tap |
+
+Override by editing `/opt/etc/init.d/S99auto-dismiss` to set them
+before starting the daemon.
+
+## Footprint
+
+- ~6 KB on disk
+- Runs one bash process tailing one log file; idle CPU is rounding
+  error
+- Only writes to `/dev/input/event1` when `M729` + `feed state
+  change : 1 -> 0` are observed in sequence
+
+## Tested on
+
+Firmware V0.3.0-o (OpenCentauri based on stock 1.1.40), Centauri
+Carbon (CC1).

oc-patches/services/auto-dismiss-load-dialog/S99auto-dismiss

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+#!/bin/sh
+# /opt/etc/init.d/S99auto-dismiss — entware service for auto-dismiss-daemon.
+# Same convention as the bundled S40sshd.
+
+prefix="/opt"
+PATH=${prefix}/bin:${prefix}/sbin:/sbin:/bin:/usr/sbin:/usr/bin
+
+DAEMON=${prefix}/sbin/auto-dismiss-daemon
+PIDFILE=${prefix}/var/run/auto-dismiss.pid
+LOGFILE=${prefix}/var/log/auto-dismiss.log
+
+start() {
+    if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
+        echo "auto-dismiss already running (pid $(cat "$PIDFILE"))"
+        return 0
+    fi
+    mkdir -p "$(dirname "$PIDFILE")" "$(dirname "$LOGFILE")"
+    # Truncate log on (re)start so each run is self-contained
+    : >"$LOGFILE"
+    echo "starting auto-dismiss..."
+    # No nohup/setsid in busybox — detach via subshell + daemon's own
+    # `trap '' HUP`. Closes stdin/out/err to log file; subshell exits
+    # immediately so the daemon gets reparented to init.
+    ( "$DAEMON" >>"$LOGFILE" 2>&1 </dev/null & echo $! >"$PIDFILE" )
+}
+
+stop() {
+    # The PIDFILE-only path was naive: if the file got out of sync
+    # with reality (stale PID after a failed start, kill-not-taking
+    # because the daemon was in a tail-F'ing disk wait, an out-of-band
+    # spawn from a previous boot's S-script, etc.) leftover daemons
+    # would survive `restart` and pile up.
+    #
+    # Belt-and-braces: name-based lookup with `pidof` plus a SIGKILL
+    # fallback for anything that didn't honour SIGTERM within a second.
+    # No `pkill` in this busybox, but pidof + kill works everywhere.
+    if [ -f "$PIDFILE" ]; then
+        kill "$(cat "$PIDFILE")" 2>/dev/null || true
+        rm -f "$PIDFILE"
+    fi
+    PIDS=$(pidof auto-dismiss-daemon 2>/dev/null || true)
+    if [ -n "$PIDS" ]; then
+        kill $PIDS 2>/dev/null || true
+        sleep 1
+        STRAG=$(pidof auto-dismiss-daemon 2>/dev/null || true)
+        [ -n "$STRAG" ] && kill -9 $STRAG 2>/dev/null
+    fi
+    echo "auto-dismiss stopped"
+}
+
+restart() { stop; sleep 1; start; }
+
+status() {
+    if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE")" 2>/dev/null; then
+        echo "auto-dismiss running (pid $(cat "$PIDFILE"))"
+        return 0
+    fi
+    echo "auto-dismiss not running"
+    return 3
+}
+
+case "$1" in
+    start)   start ;;
+    stop)    stop ;;
+    restart) restart ;;
+    status)  status ;;
+    *)       echo "Usage: $0 {start|stop|restart|status}"; exit 1 ;;
+esac

oc-patches/services/auto-dismiss-load-dialog/auto-dismiss-daemon

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+#!/opt/bin/bash
+# auto-dismiss-daemon — auto-dismiss the "Load complete" dialog on the
+# Centauri Carbon's touchscreen by watching the printer's log for the
+# load-completion signal and synthesising a tap on /dev/input/event1.
+#
+# Designed for OpenCentauri (no Klipper/Moonraker process; the proprietary
+# `app` daemon writes to /board-resource/log1 with Klipper-derived module
+# names).
+#
+# Detection logic (V0.3.0-o, verified by live capture):
+#   "feed state change : 0 -> 1"   → cycle started; reset is_load
+#   "single_command<M729>"         → cycle is a load (M729 fires only in
+#                                    the load gcode, not unload)
+#   "single_command<M82>"          → load gcode finished; dialog appears
+#                                    NOW. If is_load, settle then tap.
+#
+# We deliberately do NOT trigger on "feed state change : 1 -> 0":
+# that line fires AFTER a tap dismisses the dialog (it's downstream of
+# the action we're trying to take), making it useless as a trigger.
+# Both load and unload cycles emit M82, but only loads precede it
+# with M729, so the is_load gate keeps unload cycles untapped.
+#
+# Tap coordinates default to (289, 182), captured on firmware V0.3.0-o.
+
+set -u
+
+# Ignore SIGHUP so we survive the parent SSH session closing on install.
+# init.d will use SIGTERM to stop us, so HUP isn't needed for that.
+trap '' HUP
+
+LOG=${LOG:-/board-resource/log1}
+TAP_X=${TAP_X:-289}
+TAP_Y=${TAP_Y:-182}
+SETTLE_S=${SETTLE_S:-0.7}            # let the dialog finish drawing
+SYNTH_TAP=${SYNTH_TAP:-/opt/sbin/synth-tap}
+
+log() { logger -t auto-dismiss -- "$*"; }
+
+if [ ! -r "$LOG" ]; then
+    log "ERROR: cannot read $LOG; exiting"
+    exit 1
+fi
+if [ ! -x "$SYNTH_TAP" ]; then
+    log "ERROR: $SYNTH_TAP not executable; exiting"
+    exit 1
+fi
+
+log "starting (tap=$TAP_X,$TAP_Y log=$LOG)"
+
+is_load=0
+
+while read -r line; do
+    case "$line" in
+        *"feed state change : 0 -> 1"*)
+            # New cycle starting (load or unload). Reset the flag.
+            is_load=0
+            ;;
+        *"single_command<M729>"*)
+            # Load-specific gcode. Only loads emit M729.
+            is_load=1
+            ;;
+        *"single_command<M82>"*)
+            # M82 fires immediately after the extrude completes — the
+            # exact moment the load-complete dialog appears. Both load
+            # and unload cycles emit M82, so the is_load gate is what
+            # makes this load-only.
+            if [ "$is_load" = "1" ]; then
+                log "load M82 (gcode complete); tapping ($TAP_X,$TAP_Y) after ${SETTLE_S}s"
+                sleep "$SETTLE_S"
+                "$SYNTH_TAP" "$TAP_X" "$TAP_Y" || log "WARN: synth-tap exited $?"
+                is_load=0
+            fi
+            ;;
+    esac
+done < <(tail -n 0 -F "$LOG" 2>/dev/null)
+
+log "tail exited; daemon shutting down"

oc-patches/services/auto-dismiss-load-dialog/patch.sh

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+#!/bin/bash
+#
+# Auto-dismiss the load-filament-complete dialog.
+#
+# Installs:
+#   /opt/sbin/synth-tap                — touchscreen tap synthesiser
+#   /opt/sbin/auto-dismiss-daemon      — log-tailing daemon
+#   /opt/etc/init.d/S99auto-dismiss    — entware service script
+#
+# All three live under /opt (the entware bind mount), so this patch
+# stages them under ${SQUASHFS_ROOT}/app/auto-dismiss-load-dialog/ and
+# extends bootstrap.sh / rc.local at boot to copy them into /opt.
+# (We can't write directly under ./opt at firmware-build time because
+# /opt is bind-mounted from /user-resource at boot.)
+
+if [ $UID -ne 0 ]; then
+  echo "Error: Please run as root."
+  exit 1
+fi
+
+project_root="$REPOSITORY_ROOT"
+source "$project_root/TOOLS/helpers/utils.sh" "$project_root"
+
+check_tools "cat install"
+
+set -x
+set -e
+
+cd "$SQUASHFS_ROOT"
+
+STAGE_DIR=./app/auto-dismiss-load-dialog
+mkdir -p "$STAGE_DIR"
+
+cat "$CURRENT_PATCH_PATH/synth-tap"           > "$STAGE_DIR/synth-tap"
+cat "$CURRENT_PATCH_PATH/auto-dismiss-daemon" > "$STAGE_DIR/auto-dismiss-daemon"
+cat "$CURRENT_PATCH_PATH/S99auto-dismiss"     > "$STAGE_DIR/S99auto-dismiss"
+chmod 755 "$STAGE_DIR/synth-tap" "$STAGE_DIR/auto-dismiss-daemon" "$STAGE_DIR/S99auto-dismiss"
+
+# Hook into rc.local: after the bootstrap_oc block, copy our files into
+# /opt and start the service. Idempotent — only adds the hook once.
+RC_LOCAL=./etc/rc.local
+HOOK_BEGIN='# BEGIN: auto-dismiss-load-dialog'
+HOOK_END='# END: auto-dismiss-load-dialog'
+
+if ! grep -q "$HOOK_BEGIN" "$RC_LOCAL"; then
+  # Insert before the final 'exit 0', if present; otherwise append.
+  TMP=$(mktemp)
+  awk -v begin="$HOOK_BEGIN" -v end="$HOOK_END" '
+    /^exit 0/ && !inserted {
+      print begin
+      print "if [ -d /opt/sbin ] && [ -d /opt/etc/init.d ] && [ -f /app/auto-dismiss-load-dialog/auto-dismiss-daemon ]; then"
+      print "  cp -f /app/auto-dismiss-load-dialog/synth-tap            /opt/sbin/synth-tap"
+      print "  cp -f /app/auto-dismiss-load-dialog/auto-dismiss-daemon  /opt/sbin/auto-dismiss-daemon"
+      print "  cp -f /app/auto-dismiss-load-dialog/S99auto-dismiss      /opt/etc/init.d/S99auto-dismiss"
+      print "  chmod 755 /opt/sbin/synth-tap /opt/sbin/auto-dismiss-daemon /opt/etc/init.d/S99auto-dismiss"
+      print "  /opt/etc/init.d/S99auto-dismiss start &"
+      print "fi"
+      print end
+      print ""
+      inserted = 1
+    }
+    { print }
+    END {
+      if (!inserted) {
+        print begin
+        print "[ -f /app/auto-dismiss-load-dialog/auto-dismiss-daemon ] && /opt/etc/init.d/S99auto-dismiss start &"
+        print end
+      }
+    }
+  ' "$RC_LOCAL" > "$TMP"
+  cat "$TMP" > "$RC_LOCAL"
+  rm -f "$TMP"
+fi
+
+echo "Installed auto-dismiss-load-dialog patch."

oc-patches/services/auto-dismiss-load-dialog/patch.toml

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+id = "auto_dismiss_load_dialog"
+name = "Auto-dismiss the load-filament-complete dialog"
+execution_policy = "Always"
+compatible_versions = ["*"]
+after = ["bootstrap_oc"]

oc-patches/services/auto-dismiss-load-dialog/synth-tap

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+#!/opt/bin/bash
+# synth-tap — synthesize a single touchscreen tap on /dev/input/event1.
+#
+# Centauri Carbon's Goodix gt9xxnew_ts driver speaks Linux multitouch
+# protocol type A.  A tap is just two bursts of events written to the
+# input device: a "down" packet describing where the finger landed,
+# followed ~150 ms later by an "up" packet.
+#
+# Usage: synth-tap [X] [Y]
+#        defaults: 289 182  (the "OK" button on the load-complete dialog)
+
+set -eu
+
+X=${1:-289}
+Y=${2:-182}
+DEV=/dev/input/event1
+
+# Codes from <linux/input-event-codes.h> on this kernel
+readonly EV_SYN=0
+readonly EV_KEY=1
+readonly EV_ABS=3
+readonly SYN_REPORT=0
+readonly SYN_MT_REPORT=2
+readonly BTN_TOUCH=$((0x14a))
+readonly ABS_MT_TOUCH_MAJOR=$((0x30))
+readonly ABS_MT_WIDTH_MAJOR=$((0x32))
+readonly ABS_MT_POSITION_X=$((0x35))
+readonly ABS_MT_POSITION_Y=$((0x36))
+readonly ABS_MT_TRACKING_ID=$((0x39))
+
+# Encode one input_event as 32 hex chars (16 bytes, little-endian):
+# struct input_event {
+#     __u32 tv_sec;     # 4 bytes
+#     __u32 tv_usec;    # 4 bytes  (kernel rewrites these on input, zeros are fine)
+#     __u16 type;       # 2 bytes
+#     __u16 code;       # 2 bytes
+#     __s32 value;      # 4 bytes
+# }; total 16 bytes
+ev_hex() {
+    local typ=$1 code=$2 val=$3
+    local uval=$(( val & 0xFFFFFFFF ))   # mask to unsigned 32 (handles negatives too)
+    printf '0000000000000000%02x%02x%02x%02x%02x%02x%02x%02x' \
+        $(( typ        & 0xff )) $(( (typ  >> 8) & 0xff )) \
+        $(( code       & 0xff )) $(( (code >> 8) & 0xff )) \
+        $(( uval       & 0xff )) $(( (uval >> 8) & 0xff )) \
+        $(( (uval >> 16) & 0xff )) $(( (uval >> 24) & 0xff ))
+}
+
+# DOWN burst — one open/write cycle
+{
+    ev_hex $EV_KEY $BTN_TOUCH         1
+    ev_hex $EV_ABS $ABS_MT_POSITION_X "$X"
+    ev_hex $EV_ABS $ABS_MT_POSITION_Y "$Y"
+    ev_hex $EV_ABS $ABS_MT_TOUCH_MAJOR 20
+    ev_hex $EV_ABS $ABS_MT_WIDTH_MAJOR 20
+    ev_hex $EV_ABS $ABS_MT_TRACKING_ID 0
+    ev_hex $EV_SYN $SYN_MT_REPORT     0
+    ev_hex $EV_SYN $SYN_REPORT        0
+} | xxd -r -p > "$DEV"
+
+sleep 0.15
+
+# UP burst — recorded sequence shows just BTN_TOUCH=0 + SYN_REPORT
+{
+    ev_hex $EV_KEY $BTN_TOUCH 0
+    ev_hex $EV_SYN $SYN_REPORT 0
+} | xxd -r -p > "$DEV"