Added feature to show if Frame is paired or not on the display

Author: siliconwitch

source/application/bluetooth.c

@@ -356,7 +356,7 @@ void SD_EVT_IRQHandler(void)
     }
 }
 
-void bluetooth_setup(bool factory_reset)
+void bluetooth_setup(bool factory_reset, bool *is_paired)
 {
     // Enable the softdevice using internal RC oscillator
     check_error(sd_softdevice_enable(NULL, softdevice_assert_handler));
@@ -439,6 +439,15 @@ void bluetooth_setup(bool factory_reset)
         flash_wait_until_complete();
     }
 
+    // Check if already paired
+    ble_gap_enc_info_t zero_struct;
+    memset(&zero_struct, 0xFF, sizeof(ble_gap_enc_info_t));
+    if (memcmp((void *)bond_storage, &zero_struct, sizeof(ble_gap_enc_info_t)))
+    {
+        LOG("Device is paired");
+        *is_paired = true;
+    }
+
     // Read stored encryption key from memory
     memcpy(&bond.own_key.enc_info,
            (void *)bond_storage,

source/application/bluetooth.h

@@ -31,7 +31,7 @@
 #define BLE_PREFERRED_MAX_MTU 185
 extern uint16_t ble_negotiated_mtu;
 
-void bluetooth_setup(bool factory_reset);
+void bluetooth_setup(bool factory_reset, bool *is_paired);
 
 bool bluetooth_is_connected(void);
 

source/application/luaport.c

@@ -63,7 +63,7 @@ void lua_break_signal_interrupt(void)
                 1);
 }
 
-void run_lua(bool factory_reset)
+void run_lua(bool factory_reset, bool is_paired)
 {
     lua_State *L = luaL_newstate();
     L_global = L; // Only used for interrupts
@@ -125,9 +125,18 @@ void run_lua(bool factory_reset)
     }
 
     // Show splash screen
-    status = luaL_dostring(L, "frame.display.text('Ready to Pair', 200, 140);"
-                              "frame.display.text('Frame '..frame.bluetooth.address():sub(-2, -1), 245, 210, { color = 'ORANGE' });"
-                              "frame.display.show();");
+    if (!is_paired)
+    {
+        status = luaL_dostring(L, "frame.display.text('Ready to Pair', 200, 140);"
+                                  "frame.display.text('Frame '..frame.bluetooth.address():sub(-2, -1), 245, 210, { color = 'GREEN' });"
+                                  "frame.display.show();");
+    }
+    else
+    {
+        status = luaL_dostring(L, "frame.display.text('Frame is Paired', 185, 140);"
+                                  "frame.display.text('Frame '..frame.bluetooth.address():sub(-2, -1), 245, 210, { color = 'ORANGE' });"
+                                  "frame.display.show();");
+    }
 
     if (status != LUA_OK)
     {

source/application/luaport.h

@@ -38,4 +38,4 @@ void lua_write_to_repl(uint8_t *buffer, uint8_t length);
 
 void lua_break_signal_interrupt(void);
 
-void run_lua(bool factory_reset);
+void run_lua(bool factory_reset, bool is_paired);

source/application/main.c

@@ -402,16 +402,17 @@ int main(void)
     LOG("Frame firmware " BUILD_VERSION " (" GIT_COMMIT ")");
 
     bool factory_reset = false;
+    bool is_paired = false;
 
     hardware_setup(&factory_reset);
 
-    bluetooth_setup(factory_reset);
+    bluetooth_setup(factory_reset, &is_paired);
 
     while (1)
     {
         reload_watchdog(NULL, NULL);
 
-        run_lua(factory_reset);
+        run_lua(factory_reset, is_paired);
 
         factory_reset = false;
     }