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Code Issues Releases Wiki Activity

BLE client support on ESP32 (#1177)

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Co-authored-by: Ben Buxton <bb@cactii.net>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
buxtronix
2021-05-03 09:10:50 +10:00
committed by GitHub
parent 07db9319ad
commit 02aa75f68c
19 changed files with 1342 additions and 8 deletions
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44
esphome/components/esp32_ble_tracker/esp32_ble_tracker.h
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@@ -2,12 +2,14 @@
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
#include "queue.h"
#ifdef ARDUINO_ARCH_ESP32
#include <string>
#include <array>
#include <esp_gap_ble_api.h>
#include <esp_gattc_api.h>
#include <esp_bt_defs.h>
namespace esphome {
@@ -23,6 +25,8 @@ class ESPBTUUID {
static ESPBTUUID from_raw(const uint8_t *data);
static ESPBTUUID from_uuid(esp_bt_uuid_t uuid);
ESPBTUUID as_128bit() const;
bool contains(uint8_t data1, uint8_t data2) const;
@@ -135,6 +139,32 @@ class ESPBTDeviceListener {
ESP32BLETracker *parent_{nullptr};
};
enum class ClientState {
// Connection is idle, no device detected.
Idle,
// Device advertisement found.
Discovered,
// Connection in progress.
Connecting,
// Initial connection established.
Connected,
// The client and sub-clients have completed setup.
Established,
};
class ESPBTClient : public ESPBTDeviceListener {
public:
virtual void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) = 0;
virtual void connect() = 0;
void set_state(ClientState st) { this->state_ = st; }
ClientState state() const { return state_; }
int app_id;
protected:
ClientState state_;
};
class ESP32BLETracker : public Component {
public:
void set_scan_duration(uint32_t scan_duration) { scan_duration_ = scan_duration; }
@@ -153,6 +183,8 @@ class ESP32BLETracker : public Component {
this->listeners_.push_back(listener);
}
void register_client(ESPBTClient *client);
void print_bt_device_info(const ESPBTDevice &device);
protected:
@@ -162,16 +194,26 @@ class ESP32BLETracker : public Component {
void start_scan(bool first);
/// Callback that will handle all GAP events and redistribute them to other callbacks.
static void gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
void real_gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param);
/// Called when a `ESP_GAP_BLE_SCAN_RESULT_EVT` event is received.
void gap_scan_result(const esp_ble_gap_cb_param_t::ble_scan_result_evt_param &param);
/// Called when a `ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT` event is received.
void gap_scan_set_param_complete(const esp_ble_gap_cb_param_t::ble_scan_param_cmpl_evt_param &param);
/// Called when a `ESP_GAP_BLE_SCAN_START_COMPLETE_EVT` event is received.
void gap_scan_start_complete(const esp_ble_gap_cb_param_t::ble_scan_start_cmpl_evt_param &param);
/// Called when a `ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT` event is received.
void gap_scan_stop_complete(const esp_ble_gap_cb_param_t::ble_scan_stop_cmpl_evt_param &param);
int app_id_;
/// Callback that will handle all GATTC events and redistribute them to other callbacks.
static void gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
void real_gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t *param);
/// Vector of addresses that have already been printed in print_bt_device_info
std::vector<uint64_t> already_discovered_;
std::vector<ESPBTDeviceListener *> listeners_;
/// Client parameters.
std::vector<ESPBTClient *> clients_;
/// A structure holding the ESP BLE scan parameters.
esp_ble_scan_params_t scan_params_;
/// The interval in seconds to perform scans.
@@ -185,6 +227,8 @@ class ESP32BLETracker : public Component {
esp_ble_gap_cb_param_t::ble_scan_result_evt_param scan_result_buffer_[16];
esp_bt_status_t scan_start_failed_{ESP_BT_STATUS_SUCCESS};
esp_bt_status_t scan_set_param_failed_{ESP_BT_STATUS_SUCCESS};
Queue<BLEEvent> ble_events_;
};
extern ESP32BLETracker *global_esp32_ble_tracker;