Add skeleton of bluetooth FSM

1 files changed, 93 insertions, 5 deletions

diff --git a/src/drivers/include/bluetooth.hpp b/src/drivers/include/bluetooth.hpp
index 22b58c8b..2b5e6a8d 100644
--- a/src/drivers/include/bluetooth.hpp
+++ b/src/drivers/include/bluetooth.hpp
@@ -1,20 +1,108 @@
 
 #pragma once
 
+#include <string>
 #include <vector>
 
+#include <freertos/FreeRTOS.h>
+#include <freertos/stream_buffer.h>
+#include "esp_a2dp_api.h"
+#include "esp_avrc_api.h"
+#include "esp_gap_bt_api.h"
+#include "tinyfsm.hpp"
+#include "tinyfsm/include/tinyfsm.hpp"
+
 namespace drivers {
 
+/*
+ * A handle used to interact with the bluetooth state machine.
+ */
 class Bluetooth {
  public:
-  static auto Enable() -> Bluetooth*;
   Bluetooth();
-  ~Bluetooth();
 
-  struct Device {};
-  auto Scan() -> std::vector<Device>;
+  auto Enable() -> bool;
+  auto Disable() -> void;
+
+  auto SetSource(StreamBufferHandle_t) -> void;
+};
+
+namespace bluetooth {
+
+namespace events {
+struct Enable : public tinyfsm::Event {};
+struct Disable : public tinyfsm::Event {};
+
+namespace internal {
+struct Gap : public tinyfsm::Event {
+  esp_bt_gap_cb_event_t type;
+  esp_bt_gap_cb_param_t* param;
+};
+struct A2dp : public tinyfsm::Event {
+  esp_a2d_cb_event_t type;
+  esp_a2d_cb_param_t* param;
+};
+struct Avrc : public tinyfsm::Event {
+  esp_avrc_ct_cb_event_t type;
+  esp_avrc_ct_cb_param_t* param;
+};
+}  // namespace internal
+}  // namespace events
+
+class BluetoothState : public tinyfsm::Fsm<BluetoothState> {
+ public:
+  virtual ~BluetoothState(){};
+
+  virtual void entry() {}
+  virtual void exit() {}
+
+  virtual void react(const events::Enable& ev){};
+  virtual void react(const events::Disable& ev) = 0;
+
+  virtual void react(const events::internal::Gap& ev) = 0;
+  virtual void react(const events::internal::A2dp& ev) = 0;
+  virtual void react(const events::internal::Avrc& ev){};
+};
+
+class Disabled : public BluetoothState {
+  void entry() override;
+
+  void react(const events::Enable& ev) override;
+  void react(const events::Disable& ev) override{};
+
+  void react(const events::internal::Gap& ev) override {}
+  void react(const events::internal::A2dp& ev) override {}
+};
+
+class Scanning : public BluetoothState {
+  void entry() override;
+  void exit() override;
+
+  void react(const events::Disable& ev) override;
 
- private:
+  void react(const events::internal::Gap& ev) override;
+  void react(const events::internal::A2dp& ev) override;
 };
 
+class Connecting : public BluetoothState {
+  void entry() override;
+  void exit() override;
+
+  void react(const events::Disable& ev) override;
+  void react(const events::internal::Gap& ev) override;
+  void react(const events::internal::A2dp& ev) override;
+};
+
+class Connected : public BluetoothState {
+  void entry() override;
+  void exit() override;
+
+  void react(const events::Disable& ev) override;
+  void react(const events::internal::Gap& ev) override;
+  void react(const events::internal::A2dp& ev) override;
+  void react(const events::internal::Avrc& ev) override;
+};
+
+}  // namespace bluetooth
+
 }  // namespace drivers