From bec3d91d98e46e1e79122e30918f2f8c48de5546 Mon Sep 17 00:00:00 2001
From: pulipakaa24 <adipu@utexas.edu>
Date: Sat, 10 Jan 2026 23:19:31 -0600
Subject: [PATCH] Add mac address and other info to BLE.

---
 include/BLE.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/BLE.cpp b/include/BLE.cpp
index 713cf0e..d649eda 100644
--- a/include/BLE.cpp
+++ b/include/BLE.cpp
@@ -6,6 +6,7 @@
 #include "defines.h"
 #include <mutex>
 #include "bmHTTP.hpp"
+#include "esp_mac.h"
 
 std::atomic<bool> flag_scan_requested{false};
 std::atomic<bool> credsGiven{false};
@@ -28,6 +29,7 @@ std::atomic<NimBLECharacteristic*> authConfirmChar = nullptr;
 std::atomic<NimBLECharacteristic*> credsChar = nullptr;
 std::atomic<NimBLECharacteristic*> tokenChar = nullptr;
 std::atomic<NimBLECharacteristic*> ssidRefreshChar = nullptr;
+std::atomic<NimBLECharacteristic*> deviceInfoChar = nullptr;
 
 NimBLEAdvertising* initBLE() {
   finalAuth = false;
@@ -93,6 +95,27 @@ NimBLEAdvertising* initBLE() {
                         );
   connectConfirmChar.load()->createDescriptor("2902"); // Add BLE2902 descriptor for notifications
 
+  // 0x0006 - Device Info (READ) - MAC address and other device details
+  deviceInfoChar = pService->createCharacteristic(
+                          "0006",
+                          NIMBLE_PROPERTY::READ
+                        );
+  // Build device info JSON with MAC address
+  uint8_t mac[6];
+  esp_read_mac(mac, ESP_MAC_WIFI_STA);
+  char macStr[18];
+  snprintf(macStr, sizeof(macStr), "%02X:%02X:%02X:%02X:%02X:%02X", 
+           mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+  
+  cJSON *infoRoot = cJSON_CreateObject();
+  cJSON_AddStringToObject(infoRoot, "mac", macStr);
+  cJSON_AddStringToObject(infoRoot, "firmware", "1.0.0");
+  cJSON_AddStringToObject(infoRoot, "model", "BlindMaster-C6");
+  char *infoJson = cJSON_PrintUnformatted(infoRoot);
+  deviceInfoChar.load()->setValue(std::string(infoJson));
+  cJSON_Delete(infoRoot);
+  free(infoJson);
+
   // Start
   pService->start();