Supporting multiple boards

templates/basic/monitor.sh

@@ -8,6 +8,7 @@
 #   ./monitor.sh                    Auto-detect port
 #   ./monitor.sh -p /dev/ttyUSB0    Specify port
 #   ./monitor.sh -b 9600            Override baud rate
+#   ./monitor.sh --board mega       Use baud from a named board
 #   ./monitor.sh --watch            Reconnect after reset/replug
 #
 # Prerequisites: arduino-cli in PATH
@@ -25,6 +26,7 @@ else
     RED=''; GRN=''; YLW=''; CYN=''; BLD=''; RST=''
 fi
 
+ok()   { echo "${GRN}ok${RST}   $*"; }
 warn() { echo "${YLW}warn${RST} $*"; }
 die()  { echo "${RED}FAIL${RST} $*" >&2; exit 1; }
 
@@ -35,6 +37,18 @@ toml_get() {
     (grep "^$1 " "$CONFIG" 2>/dev/null || true) | head -1 | sed 's/.*= *"\{0,1\}\([^"]*\)"\{0,1\}/\1/' | tr -d ' '
 }
 
+toml_section_get() {
+    local section="$1" key="$2"
+    awk -v section="[$section]" -v key="$key" '
+        $0 == section { found=1; next }
+        /^\[/ { found=0 }
+        found && $1 == key && /=/ {
+            sub(/^[^=]*= *"?/, ""); sub(/"? *$/, ""); print; exit
+        }
+    ' "$CONFIG"
+}
+
+DEFAULT_BOARD="$(toml_get 'default')"
 BAUD="$(toml_get 'baud')"
 BAUD="${BAUD:-115200}"
 LOCAL_CONFIG="$SCRIPT_DIR/.anvil.local"
@@ -48,28 +62,41 @@ fi
 # -- Parse arguments -------------------------------------------------------
 PORT=""
 DO_WATCH=0
+BOARD_NAME=""
 
 while [[ $# -gt 0 ]]; do
     case "$1" in
         -p|--port)  PORT="$2"; shift 2 ;;
         -b|--baud)  BAUD="$2"; shift 2 ;;
+        --board)    BOARD_NAME="$2"; shift 2 ;;
         --watch)    DO_WATCH=1; shift ;;
         -h|--help)
-            echo "Usage: ./monitor.sh [-p PORT] [-b BAUD] [--watch]"
+            echo "Usage: ./monitor.sh [-p PORT] [-b BAUD] [--board NAME] [--watch]"
             echo "  Opens serial monitor. Baud rate from .anvil.toml."
+            echo "  --board NAME selects a board from [boards.NAME]."
             exit 0
             ;;
         *) die "Unknown option: $1" ;;
     esac
 done
 
+# -- Resolve board ---------------------------------------------------------
+ACTIVE_BOARD="${BOARD_NAME:-$DEFAULT_BOARD}"
+BOARD_BAUD="$(toml_section_get "boards.$ACTIVE_BOARD" "baud")"
+if [[ -n "$BOARD_BAUD" ]]; then
+    BAUD="$BOARD_BAUD"
+fi
+
+if [[ -n "$BOARD_NAME" ]]; then
+    ok "Using board: $BOARD_NAME (baud: $BAUD)"
+fi
+
 # -- Preflight -------------------------------------------------------------
 command -v arduino-cli &>/dev/null \
     || die "arduino-cli not found in PATH."
 
 # -- Auto-detect port ------------------------------------------------------
 auto_detect() {
-    # Prefer ttyUSB/ttyACM (real USB devices) over ttyS (hardware UART)
     local port
     port=$(arduino-cli board list 2>/dev/null \
         | grep -i "serial" \
@@ -77,7 +104,6 @@ auto_detect() {
         | grep -E 'ttyUSB|ttyACM|COM' \
         | head -1)
 
-    # Fallback: any serial port
     if [[ -z "$port" ]]; then
         port=$(arduino-cli board list 2>/dev/null \
             | grep -i "serial" \
@@ -88,7 +114,6 @@ auto_detect() {
     echo "$port"
 }
 
-# resolve_vid_pid VID:PID -- search arduino-cli JSON for matching device
 resolve_vid_pid() {
     local target_vid target_pid json
     target_vid="$(echo "$1" | cut -d: -f1 | tr '[:upper:]' '[:lower:]')"
@@ -113,7 +138,6 @@ except: pass
 }
 
 if [[ -z "$PORT" ]]; then
-    # Try VID:PID resolution first
     if [[ -n "$LOCAL_VID_PID" ]]; then
         PORT="$(resolve_vid_pid "$LOCAL_VID_PID")"
         if [[ -n "$PORT" ]]; then
@@ -125,13 +149,11 @@ if [[ -z "$PORT" ]]; then
         fi
     fi
 
-    # Fall back to saved port
     if [[ -z "$PORT" ]] && [[ -n "$LOCAL_PORT" ]]; then
         PORT="$LOCAL_PORT"
         warn "Using port $PORT (from .anvil.local)"
     fi
 
-    # Fall back to auto-detect
     if [[ -z "$PORT" ]]; then
         PORT="$(auto_detect)"