feat: FEAT-14 dual T3U — wlan2 uplink, wlan1 AP, onboard wlan0 fallback

deploy/90-yaris-uplink

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 case "$1" in
-    wlan0|wlan1) ;;
+    wlan0|wlan1|wlan2) ;;
     *) exit 0 ;;
 esac
 

deploy/install_netwatch.sh

@@ -7,15 +7,15 @@
 # already exist (see PLAN.md Phase 6). The optional "phone-hotspot" profile is
 # created through the Settings page.
 #
-# Since 2026-08-12: the fast TP-Link T3U (wlan1) hosts the in-car AP
-# ("Hotspot-local"), while the onboard BCM43438 (wlan0) carries the internet
-# uplink (home-wifi / phone-hotspot).
+# Since 2026-08-14 (FEAT-14): dual T3U — wlan1 (T3U #1) hosts the in-car AP
+# ("Hotspot-local"), and a second T3U (wlan2) carries the internet uplink
+# (home-wifi / phone-hotspot); the onboard BCM43438 (wlan0) is the fallback.
 set -euo pipefail
 
 REPO_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
-WLAN=wlan0   # onboard — internet uplink
-WLAN_FB=wlan1  # T3U — uplink fallback
-AP_IFACE=wlan1 # T3U — hosts the in-car AP
+WLAN=wlan2    # T3U #2 — internet uplink
+WLAN_FB=wlan0 # onboard BCM43438 — uplink fallback
+AP_IFACE=wlan1 # T3U #1 — hosts the in-car AP
 
 sudo systemctl stop yaris-uplink-wait.service 2>/dev/null || true
 sudo systemctl stop yaris-netwatch.timer yaris-netwatch.service 2>/dev/null || true
@@ -28,9 +28,9 @@ sudo install -m 644 "$REPO_DIR/deploy/yaris-hotspot-dns.conf" \
 sudo install -m 755 "$REPO_DIR/deploy/90-yaris-uplink" \
     /etc/NetworkManager/dispatcher.d/90-yaris-uplink
 
-# Bind the internet uplink to the onboard radio (wlan0)
+# Bind the internet uplink to the second T3U (wlan2)
 sudo nmcli connection modify home-wifi connection.interface-name "$WLAN"
-# The in-car AP lives on the fast T3U (wlan1), forced to 5GHz
+# The in-car AP lives on T3U #1 (wlan1), forced to 5GHz
 sudo nmcli connection modify Hotspot-local \
     connection.interface-name "$AP_IFACE" \
     802-11-wireless.band a \
@@ -44,8 +44,8 @@ if nmcli connection show phone-hotspot >/dev/null 2>&1; then
         802-11-wireless.mtu 1400
 fi
 
-# Create wlan1 fallback profile (lower autoconnect-priority so wlan0 wins)
-# home-wifi-fb: same SSID as home-wifi but on wlan1 (T3U)
+# Create wlan0 fallback profile (lower autoconnect-priority so wlan2 wins)
+# home-wifi-fb: same SSID as home-wifi but on wlan0 (onboard)
 HOME_SSID=$(nmcli -g 802-11-wireless.ssid connection show home-wifi 2>/dev/null || true)
 HOME_PSK=$(sudo nmcli -g 802-11-wireless-security.psk connection show --show-secrets home-wifi 2>/dev/null || true)
 if [ -n "$HOME_SSID" ] && [ -n "$HOME_PSK" ]; then
@@ -62,7 +62,7 @@ if [ -n "$HOME_SSID" ] && [ -n "$HOME_PSK" ]; then
     echo "Created home-wifi-fb fallback on $WLAN_FB"
 fi
 
-# Re-enable wlan0 as a managed (but low-priority) fallback
+# Re-enable wlan0 (onboard) as a managed low-priority fallback
 sudo nmcli device set "$WLAN_FB" managed yes 2>/dev/null || true
 
 sudo cp "$REPO_DIR/deploy/yaris-netwatch.service" /etc/systemd/system/yaris-netwatch.service

deploy/readme.md

@@ -20,7 +20,7 @@ cd /home/yaris/app/yaris-obd
 
 # REQUIRED before netwatch install:
 # Create/update NetworkManager profiles named exactly:
-#   - home-wifi      (client WiFi → wlan0, the internet uplink)
+#   - home-wifi      (client WiFi → wlan2, the internet uplink)
 #   - Hotspot-local  (local AP, shared at 10.42.0.1/24, on wlan1)
 # See section 4 below for exact nmcli commands.
 
@@ -42,10 +42,10 @@ curl -I http://127.0.0.1/
 
 ## TP-Link Archer T3U (RTL8812BU) driver
 
-This project expects the T3U USB adapter as `wlan1` for the in-car AP (5GHz)
-and the onboard radio as `wlan0` for the internet uplink (home WiFi + phone
-hotspot). On a fresh Pi, install the RTL8812BU DKMS driver before configuring
-WiFi profiles:
+This project expects two T3U USB adapters — `wlan1` for the in-car AP (5GHz)
+and `wlan2` for the internet uplink (home WiFi + phone hotspot); the onboard
+`wlan0` is a fallback. On a fresh Pi, install the RTL8812BU DKMS driver before
+configuring WiFi profiles:
 
 ```bash
 sudo apt-get update

deploy/yaris_uplink.py

@@ -12,12 +12,12 @@ import uuid
 PHONE_CONNECTION = "phone-hotspot"
 HOME_CONNECTION = "home-wifi"
 AP_CONNECTION = "Hotspot-local"
-# 2026-08-12 swap: the fast TP-Link T3U (wlan1) hosts the in-car AP so phones
-# get 5GHz AC throughput; the weak onboard BCM43438 (wlan0) carries the
-# internet uplink (home-wifi / phone-hotspot), which is background traffic.
+# 2026-08-14 (FEAT-14): dual T3U — wlan1 (T3U #1) hosts the in-car AP so phones
+# get 5GHz AC throughput; a second T3U (wlan2) carries the internet uplink
+# (home-wifi / phone-hotspot); the onboard BCM43438 (wlan0) is only a fallback.
 AP_INTERFACE = "wlan1"
-PRIMARY_INTERFACE = "wlan0"    # onboard — internet uplink
-FALLBACK_INTERFACE = "wlan1"   # T3U — uplink fallback if onboard is absent
+PRIMARY_INTERFACE = "wlan2"    # T3U #2 — internet uplink
+FALLBACK_INTERFACE = "wlan0"   # onboard BCM43438 — fallback if T3U #2 is absent
 STATUS_PATH = "/var/lib/yaris-obd/uplink-status.json"
 PHONE_KEYFILE = (
     "/etc/NetworkManager/system-connections/"
@@ -224,7 +224,7 @@ def _ap_client_count():
 
 
 def check_uplink():
-    """Manage internet uplink on wlan0 only. wlan1 AP is never touched."""
+    """Manage internet uplink on the uplink interface only. wlan1 AP is never touched."""
     current = active_connection()
     phone_configured = connection_exists(PHONE_CONNECTION)
 
@@ -275,7 +275,7 @@ def check_uplink():
             return True
         return _connect_home_or_idle()
 
-    # Phone not configured. Home wifi is the only uplink on wlan1.
+    # Phone not configured. Home wifi is the only uplink.
     if current == HOME_CONNECTION:
         write_status("home_connected_no_phone")
         return True