Add Rak 6421 autoconf

* More blinkenlights work for Thinknode-m3

* Update src/mesh/NodeDB.cpp

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

bin/config.d/lora-hat-rak-6421-pi-hat.yaml

@@ -0,0 +1,11 @@
+Lora:
+
+  ### RAK13300in Slot 1
+  Module: sx1262
+  IRQ: 22 #IO6
+  Reset: 16 # IO4
+  Busy: 24 # IO5
+  # Ant_sw: 13 # IO3 
+  DIO3_TCXO_VOLTAGE: true
+  DIO2_AS_RF_SWITCH: true
+  spidev: spidev0.0

src/mesh/NodeDB.cpp

@@ -805,11 +805,11 @@ void NodeDB::installDefaultModuleConfig()
     moduleConfig.external_notification.output_ms = 500;
     moduleConfig.external_notification.nag_timeout = 2;
 #endif
-#if defined(RAK4630) || defined(RAK11310) || defined(RAK3312) || defined(MUZI_BASE)
-    // Default to RAK led pin 2 (blue)
+#if defined(RAK4630) || defined(RAK11310) || defined(RAK3312) || defined(MUZI_BASE) || defined(ELECROW_ThinkNode_M3)
+    // Default to PIN_LED2 for external notification output (LED color depends on device variant)
     moduleConfig.external_notification.enabled = true;
     moduleConfig.external_notification.output = PIN_LED2;
-#if defined(MUZI_BASE)
+#if defined(MUZI_BASE) || defined(ELECROW_ThinkNode_M3)
     moduleConfig.external_notification.active = false;
 #else
     moduleConfig.external_notification.active = true;

src/modules/StatusLEDModule.cpp

@@ -26,7 +26,11 @@ int StatusLEDModule::handleStatusUpdate(const meshtastic::Status *arg)
                 power_state = charged;
             }
         } else {
-            power_state = discharging;
+            if (powerStatus->getBatteryChargePercent() > 5) {
+                power_state = discharging;
+            } else {
+                power_state = critical;
+            }
         }
         break;
     }
@@ -58,16 +62,33 @@ int StatusLEDModule::handleStatusUpdate(const meshtastic::Status *arg)
 
 int32_t StatusLEDModule::runOnce()
 {
+    my_interval = 1000;
 
     if (power_state == charging) {
         CHARGE_LED_state = !CHARGE_LED_state;
     } else if (power_state == charged) {
         CHARGE_LED_state = LED_STATE_ON;
+    } else if (power_state == critical) {
+        if (POWER_LED_starttime + 30000 < millis() && !doing_fast_blink) {
+            doing_fast_blink = true;
+            POWER_LED_starttime = millis();
+        }
+        if (doing_fast_blink) {
+            PAIRING_LED_state = LED_STATE_OFF;
+            CHARGE_LED_state = !CHARGE_LED_state;
+            my_interval = 250;
+            if (POWER_LED_starttime + 2000 < millis()) {
+                doing_fast_blink = false;
+            }
+        } else {
+            CHARGE_LED_state = LED_STATE_OFF;
+        }
+
     } else {
         CHARGE_LED_state = LED_STATE_OFF;
     }
 
-    if (!config.bluetooth.enabled || PAIRING_LED_starttime + 30 * 1000 < millis()) {
+    if (!config.bluetooth.enabled || PAIRING_LED_starttime + 30 * 1000 < millis() || doing_fast_blink) {
         PAIRING_LED_state = LED_STATE_OFF;
     } else if (ble_state == unpaired) {
         if (slowTrack) {

src/modules/StatusLEDModule.h

@@ -31,8 +31,10 @@ class StatusLEDModule : private concurrency::OSThread
     bool PAIRING_LED_state = LED_STATE_OFF;
 
     uint32_t PAIRING_LED_starttime = 0;
+    uint32_t POWER_LED_starttime = 0;
+    bool doing_fast_blink = false;
 
-    enum PowerState { discharging, charging, charged };
+    enum PowerState { discharging, charging, charged, critical };
 
     PowerState power_state = discharging;
 

src/platform/portduino/PortduinoGlue.cpp

@@ -6,6 +6,7 @@
 #include "target_specific.h"
 
 #include "PortduinoGlue.h"
+#include "SHA256.h"
 #include "api/ServerAPI.h"
 #include "linux/gpio/LinuxGPIOPin.h"
 #include "meshUtils.h"
@@ -270,7 +271,37 @@ void portduinoSetup()
                 }
                 std::cout << "autoconf: Found Pi HAT+ " << hat_vendor << " " << autoconf_product << " at /proc/device-tree/hat"
                           << std::endl;
-                found_hat = true;
+
+                std::ifstream hatUUID("/proc/device-tree/hat/uuid");
+                char uuid[37] = {0};
+                if (hatUUID.is_open()) {
+                    hatUUID.read(uuid, 37);
+                    hatUUID.close();
+                    std::cout << "autoconf: UUID " << uuid << std::endl;
+                    SHA256 uuid_hash;
+                    uint8_t uuid_hash_bytes[32] = {0};
+
+                    uuid_hash.reset();
+                    uuid_hash.update(uuid, 37);
+                    uuid_hash.finalize(uuid_hash_bytes, 32);
+
+                    for (int j = 0; j < 16; j++) {
+                        portduino_config.device_id[j] = uuid_hash_bytes[j];
+                    }
+                    portduino_config.has_device_id = true;
+                    uint8_t dmac[6] = {0};
+                    dmac[0] = (uuid_hash_bytes[17] << 4) | 2;
+                    dmac[1] = uuid_hash_bytes[18];
+                    dmac[2] = uuid_hash_bytes[19];
+                    dmac[3] = uuid_hash_bytes[20];
+                    dmac[4] = uuid_hash_bytes[21];
+                    dmac[5] = uuid_hash_bytes[22];
+                    char macBuf[13] = {0};
+                    sprintf(macBuf, "%02X%02X%02X%02X%02X%02X", dmac[0], dmac[1], dmac[2], dmac[3], dmac[4], dmac[5]);
+                    portduino_config.mac_address = macBuf;
+                    found_hat = true;
+                }
+
             } else {
                 std::cout << "autoconf: Could not locate Pi HAT+ at /proc/device-tree/hat" << std::endl;
             }

variants/nrf52840/ELECROW-ThinkNode-M3/variant.h

@@ -54,6 +54,7 @@ extern "C" {
 #define LED_POWER red_LED_PIN
 #define LED_CHARGE LED_POWER // Signals the Status LED Module to handle this LED
 #define green_LED_PIN 35
+#define PIN_LED2 green_LED_PIN
 #define LED_BLUE 37
 #define LED_PAIRING LED_BLUE // Signals the Status LED Module to handle this LED