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Code Issues Releases Wiki Activity

BLE client support on ESP32 (#1177)

Browse Source 
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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86
esphome/components/esp32_ble_tracker/esp32_ble_tracker.cpp
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@@ -48,7 +48,23 @@ void ESP32BLETracker::setup() {
}
void ESP32BLETracker::loop() {
if (xSemaphoreTake(this->scan_end_lock_, 0L)) {
BLEEvent *ble_event = this->ble_events_.pop();
while (ble_event != nullptr) {
if (ble_event->type_)
this->real_gattc_event_handler(ble_event->event_.gattc.gattc_event, ble_event->event_.gattc.gattc_if,
&ble_event->event_.gattc.gattc_param);
else
this->real_gap_event_handler(ble_event->event_.gap.gap_event, &ble_event->event_.gap.gap_param);
delete ble_event;
ble_event = this->ble_events_.pop();
}
bool connecting = false;
for (auto *client : this->clients_) {
if (client->state() == ClientState::Connecting || client->state() == ClientState::Discovered)
connecting = true;
}
if (!connecting && xSemaphoreTake(this->scan_end_lock_, 0L)) {
xSemaphoreGive(this->scan_end_lock_);
global_esp32_ble_tracker->start_scan(false);
}
@@ -69,6 +85,17 @@ void ESP32BLETracker::loop() {
if (listener->parse_device(device))
found = true;
for (auto *client : this->clients_)
if (client->parse_device(device)) {
found = true;
if (client->state() == ClientState::Discovered) {
esp_ble_gap_stop_scanning();
if (xSemaphoreTake(this->scan_end_lock_, 10L / portTICK_PERIOD_MS)) {
xSemaphoreGive(this->scan_end_lock_);
}
}
}
if (!found) {
this->print_bt_device_info(device);
}
@@ -122,6 +149,11 @@ bool ESP32BLETracker::ble_setup() {
ESP_LOGE(TAG, "esp_ble_gap_register_callback failed: %d", err);
return false;
}
err = esp_ble_gattc_register_callback(ESP32BLETracker::gattc_event_handler);
if (err != ESP_OK) {
ESP_LOGE(TAG, "esp_ble_gattc_register_callback failed: %d", err);
return false;
}
// Empty name
esp_ble_gap_set_device_name("");
@@ -166,7 +198,17 @@ void ESP32BLETracker::start_scan(bool first) {
});
}
void ESP32BLETracker::register_client(ESPBTClient *client) {
client->app_id = ++this->app_id_;
this->clients_.push_back(client);
}
void ESP32BLETracker::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {
BLEEvent *gap_event = new BLEEvent(event, param);
global_esp32_ble_tracker->ble_events_.push(gap_event);
}
void ESP32BLETracker::real_gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) {
switch (event) {
case ESP_GAP_BLE_SCAN_RESULT_EVT:
global_esp32_ble_tracker->gap_scan_result(param->scan_rst);
@@ -177,6 +219,9 @@ void ESP32BLETracker::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_ga
case ESP_GAP_BLE_SCAN_START_COMPLETE_EVT:
global_esp32_ble_tracker->gap_scan_start_complete(param->scan_start_cmpl);
break;
case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:
global_esp32_ble_tracker->gap_scan_stop_complete(param->scan_stop_cmpl);
break;
default:
break;
}
@@ -190,6 +235,10 @@ void ESP32BLETracker::gap_scan_start_complete(const esp_ble_gap_cb_param_t::ble_
this->scan_start_failed_ = param.status;
}
void ESP32BLETracker::gap_scan_stop_complete(const esp_ble_gap_cb_param_t::ble_scan_stop_cmpl_evt_param &param) {
xSemaphoreGive(this->scan_end_lock_);
}
void ESP32BLETracker::gap_scan_result(const esp_ble_gap_cb_param_t::ble_scan_result_evt_param &param) {
if (param.search_evt == ESP_GAP_SEARCH_INQ_RES_EVT) {
if (xSemaphoreTake(this->scan_result_lock_, 0L)) {
@@ -203,6 +252,19 @@ void ESP32BLETracker::gap_scan_result(const esp_ble_gap_cb_param_t::ble_scan_res
}
}
void ESP32BLETracker::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) {
BLEEvent *gattc_event = new BLEEvent(event, gattc_if, param);
global_esp32_ble_tracker->ble_events_.push(gattc_event);
}
void ESP32BLETracker::real_gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
esp_ble_gattc_cb_param_t *param) {
for (auto *client : global_esp32_ble_tracker->clients_) {
client->gattc_event_handler(event, gattc_if, param);
}
}
ESPBTUUID::ESPBTUUID() : uuid_() {}
ESPBTUUID ESPBTUUID::from_uint16(uint16_t uuid) {
ESPBTUUID ret;
@@ -223,6 +285,15 @@ ESPBTUUID ESPBTUUID::from_raw(const uint8_t *data) {
ret.uuid_.uuid.uuid128[i] = data[i];
return ret;
}
ESPBTUUID ESPBTUUID::from_uuid(esp_bt_uuid_t uuid) {
ESPBTUUID ret;
ret.uuid_.len = uuid.len;
ret.uuid_.uuid.uuid16 = uuid.uuid.uuid16;
ret.uuid_.uuid.uuid32 = uuid.uuid.uuid32;
for (size_t i = 0; i < ESP_UUID_LEN_128; i++)
ret.uuid_.uuid.uuid128[i] = uuid.uuid.uuid128[i];
return ret;
}
ESPBTUUID ESPBTUUID::as_128bit() const {
if (this->uuid_.len == ESP_UUID_LEN_128) {
return *this;
@@ -289,16 +360,21 @@ std::string ESPBTUUID::to_string() {
char sbuf[64];
switch (this->uuid_.len) {
case ESP_UUID_LEN_16:
sprintf(sbuf, "%02X:%02X", this->uuid_.uuid.uuid16 >> 8, this->uuid_.uuid.uuid16 & 0xff);
sprintf(sbuf, "0x%02X%02X", this->uuid_.uuid.uuid16 >> 8, this->uuid_.uuid.uuid16 & 0xff);
break;
case ESP_UUID_LEN_32:
sprintf(sbuf, "%02X:%02X:%02X:%02X", this->uuid_.uuid.uuid32 >> 24, (this->uuid_.uuid.uuid32 >> 16 & 0xff),
sprintf(sbuf, "0x%02X%02X%02X%02X", this->uuid_.uuid.uuid32 >> 24, (this->uuid_.uuid.uuid32 >> 16 & 0xff),
(this->uuid_.uuid.uuid32 >> 8 & 0xff), this->uuid_.uuid.uuid32 & 0xff);
break;
default:
case ESP_UUID_LEN_128:
for (uint8_t i = 0; i < 16; i++)
sprintf(sbuf + i * 3, "%02X:", this->uuid_.uuid.uuid128[i]);
char *bpos = sbuf;
for (int8_t i = 15; i >= 0; i--) {
sprintf(bpos, "%02X", this->uuid_.uuid.uuid128[i]);
bpos += 2;
if (i == 3 || i == 5 || i == 7 || i == 9)
sprintf(bpos++, "-");
}
sbuf[47] = '\0';
break;
}