* CMD_SET_FLOOD_SCOPE_KEY, now with second variant for explicitly sending un-scoped

* FIRMWARE_VER_CODE bumped to 12

examples/companion_radio/MyMesh.cpp

@@ -495,19 +495,27 @@ void MyMesh::sendFloodScoped(const TransportKey& scope, mesh::Packet* pkt, uint3
 
 void MyMesh::sendFloodScoped(const ContactInfo& recipient, mesh::Packet* pkt, uint32_t delay_millis) {
   // TODO: dynamic send_scope, depending on recipient and current 'home' Region
-  TransportKey default_scope;
-  memcpy(&default_scope.key, _prefs.default_scope_key, sizeof(default_scope.key));
+  if (send_unscoped) {
+    sendFlood(pkt, delay_millis, _prefs.path_hash_mode + 1);  // app has explicitly requested un-scoped
+  } else {
+    TransportKey default_scope;
+    memcpy(&default_scope.key, _prefs.default_scope_key, sizeof(default_scope.key));
 
-  auto scope = send_scope.isNull() ? &default_scope : &send_scope;
-  sendFloodScoped(*scope, pkt, delay_millis);
+    auto scope = send_scope.isNull() ? &default_scope : &send_scope;
+    sendFloodScoped(*scope, pkt, delay_millis);
+  }
 }
 void MyMesh::sendFloodScoped(const mesh::GroupChannel& channel, mesh::Packet* pkt, uint32_t delay_millis) {
   // TODO: have per-channel send_scope
-  TransportKey default_scope;
-  memcpy(&default_scope.key, _prefs.default_scope_key, sizeof(default_scope.key));
+  if (send_unscoped) {
+    sendFlood(pkt, delay_millis, _prefs.path_hash_mode + 1);  // app has explicitly requested un-scoped
+  } else {
+    TransportKey default_scope;
+    memcpy(&default_scope.key, _prefs.default_scope_key, sizeof(default_scope.key));
 
-  auto scope = send_scope.isNull() ? &default_scope : &send_scope;
-  sendFloodScoped(*scope, pkt, delay_millis);
+    auto scope = send_scope.isNull() ? &default_scope : &send_scope;
+    sendFloodScoped(*scope, pkt, delay_millis);
+  }
 }
 
 void MyMesh::onMessageRecv(const ContactInfo &from, mesh::Packet *pkt, uint32_t sender_timestamp,
@@ -856,6 +864,7 @@ MyMesh::MyMesh(mesh::Radio &radio, mesh::RNG &rng, mesh::RTCClock &rtc, SimpleMe
   dirty_contacts_expiry = 0;
   memset(advert_paths, 0, sizeof(advert_paths));
   memset(send_scope.key, 0, sizeof(send_scope.key));
+  send_unscoped = false;
 
   // defaults
   memset(&_prefs, 0, sizeof(_prefs));
@@ -1885,10 +1894,14 @@ void MyMesh::handleCmdFrame(size_t len) {
     }
   } else if (cmd_frame[0] == CMD_SET_FLOOD_SCOPE_KEY && len >= 2 && cmd_frame[1] == 0) {
     if (len >= 2 + 16) {
-      memcpy(send_scope.key, &cmd_frame[2], sizeof(send_scope.key));  // set curr scope TransportKey
+      memcpy(send_scope.key, &cmd_frame[2], sizeof(send_scope.key));  // set scope override TransportKey
     } else {
-      memset(send_scope.key, 0, sizeof(send_scope.key));  // set scope to null
+      memset(send_scope.key, 0, sizeof(send_scope.key));  // reset scope override
     }
+    send_unscoped = false;
+    writeOKFrame();
+  } else if (cmd_frame[0] == CMD_SET_FLOOD_SCOPE_KEY && len >= 2 && cmd_frame[1] == 1) {  // ver 12+
+    send_unscoped = true;
     writeOKFrame();
   } else if (cmd_frame[0] == CMD_SET_DEFAULT_FLOOD_SCOPE && len >= 1) {
     if (len >= 1+31+16) {

examples/companion_radio/MyMesh.h

@@ -5,7 +5,7 @@
 #include "AbstractUITask.h"
 
 /*------------ Frame Protocol --------------*/
-#define FIRMWARE_VER_CODE 11
+#define FIRMWARE_VER_CODE 12
 
 #ifndef FIRMWARE_BUILD_DATE
 #define FIRMWARE_BUILD_DATE "19 Apr 2026"
@@ -215,6 +215,7 @@ private:
   uint32_t _active_ble_pin;
   bool _iter_started;
   bool _cli_rescue;
+  bool send_unscoped;   // force un-scoped flood (instead of using send_scope)
   char cli_command[80];
   uint8_t app_target_ver;
   uint8_t *sign_data;