add BLE bonding

Signed-off-by: Peter Siegmund <mars3142@users.noreply.github.com>

firmware/components/remote_control/include/remote_control.h

@@ -1,3 +1,15 @@
 #pragma once
 
+#include "host/ble_hs.h"
+#include "sdkconfig.h"
+
+typedef struct
+{
+    uint16_t conn_handle;
+    bool is_connected;
+} ble_connection_t;
+
+extern ble_connection_t g_connections[CONFIG_BT_NIMBLE_MAX_CONNECTIONS];
+
 void remote_control_init(void);
+bool is_any_device_connected(void);

firmware/components/remote_control/include/uart_service.h

@@ -14,8 +14,7 @@ extern const ble_uuid128_t gatt_svr_chr_uart_rx_uuid;
 // TX Characteristic UUID: 6E400003-B5A3-F393-E0A9-E50E24DCCA9E
 extern const ble_uuid128_t gatt_svr_chr_uart_tx_uuid;
 
-extern uint16_t conn_handle;
-extern uint16_t tx_chr_val_handle;
+extern uint16_t tx_chr_val_handle; // This is still needed as it's set once by the stack
 
 int gatt_svr_chr_uart_access(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg);
 void send_ble_data(const char *data);