Revert BLE gatt characteristics refactoring temporarily

firmware/targets/f7/ble_glue/serial_service.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#define SERIAL_SVC_DATA_LEN_MAX (486)
+#define SERIAL_SVC_CHAR_VALUE_LEN_MAX (243)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    SerialServiceRpcStatusNotActive = 0UL,
+    SerialServiceRpcStatusActive = 1UL,
+} SerialServiceRpcStatus;
+
+typedef enum {
+    SerialServiceEventTypeDataReceived,
+    SerialServiceEventTypeDataSent,
+    SerialServiceEventTypesBleResetRequest,
+} SerialServiceEventType;
+
+typedef struct {
+    uint8_t* buffer;
+    uint16_t size;
+} SerialServiceData;
+
+typedef struct {
+    SerialServiceEventType event;
+    SerialServiceData data;
+} SerialServiceEvent;
+
+typedef uint16_t (*SerialServiceEventCallback)(SerialServiceEvent event, void* context);
+
+void serial_svc_start();
+
+void serial_svc_set_callbacks(
+    uint16_t buff_size,
+    SerialServiceEventCallback callback,
+    void* context);
+
+void serial_svc_set_rpc_status(SerialServiceRpcStatus status);
+
+void serial_svc_notify_buffer_is_empty();
+
+void serial_svc_stop();
+
+bool serial_svc_is_started();
+
+bool serial_svc_update_tx(uint8_t* data, uint16_t data_len);
+
+#ifdef __cplusplus
+}
+#endif