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https://github.com/esphome/esphome.git
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100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
#include "ble_characteristic.h"
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#include "ble_client_base.h"
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#include "ble_service.h"
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#include "esphome/core/log.h"
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#ifdef USE_ESP32
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namespace esphome {
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namespace esp32_ble_client {
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static const char *const TAG = "esp32_ble_client";
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BLECharacteristic::~BLECharacteristic() {
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for (auto &desc : this->descriptors)
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delete desc; // NOLINT(cppcoreguidelines-owning-memory)
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}
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void BLECharacteristic::release_descriptors() {
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this->parsed = false;
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for (auto &desc : this->descriptors)
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delete desc; // NOLINT(cppcoreguidelines-owning-memory)
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this->descriptors.clear();
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}
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void BLECharacteristic::parse_descriptors() {
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this->parsed = true;
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uint16_t offset = 0;
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esp_gattc_descr_elem_t result;
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while (true) {
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uint16_t count = 1;
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esp_gatt_status_t status =
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esp_ble_gattc_get_all_descr(this->service->client->get_gattc_if(), this->service->client->get_conn_id(),
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this->handle, &result, &count, offset);
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if (status == ESP_GATT_INVALID_OFFSET || status == ESP_GATT_NOT_FOUND) {
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break;
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}
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if (status != ESP_GATT_OK) {
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ESP_LOGW(TAG, "[%d] [%s] esp_ble_gattc_get_all_descr error, status=%d",
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this->service->client->get_connection_index(), this->service->client->address_str().c_str(), status);
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break;
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}
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if (count == 0) {
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break;
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}
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BLEDescriptor *desc = new BLEDescriptor(); // NOLINT(cppcoreguidelines-owning-memory)
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desc->uuid = espbt::ESPBTUUID::from_uuid(result.uuid);
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desc->handle = result.handle;
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desc->characteristic = this;
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this->descriptors.push_back(desc);
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ESP_LOGV(TAG, "[%d] [%s] descriptor %s, handle 0x%x", this->service->client->get_connection_index(),
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this->service->client->address_str().c_str(), desc->uuid.to_string().c_str(), desc->handle);
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offset++;
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}
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}
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BLEDescriptor *BLECharacteristic::get_descriptor(espbt::ESPBTUUID uuid) {
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if (!this->parsed)
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this->parse_descriptors();
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for (auto &desc : this->descriptors) {
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if (desc->uuid == uuid)
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return desc;
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}
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return nullptr;
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}
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BLEDescriptor *BLECharacteristic::get_descriptor(uint16_t uuid) {
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return this->get_descriptor(espbt::ESPBTUUID::from_uint16(uuid));
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}
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BLEDescriptor *BLECharacteristic::get_descriptor_by_handle(uint16_t handle) {
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if (!this->parsed)
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this->parse_descriptors();
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for (auto &desc : this->descriptors) {
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if (desc->handle == handle)
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return desc;
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}
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return nullptr;
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}
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esp_err_t BLECharacteristic::write_value(uint8_t *new_val, int16_t new_val_size, esp_gatt_write_type_t write_type) {
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auto *client = this->service->client;
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auto status = esp_ble_gattc_write_char(client->get_gattc_if(), client->get_conn_id(), this->handle, new_val_size,
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new_val, write_type, ESP_GATT_AUTH_REQ_NONE);
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if (status) {
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ESP_LOGW(TAG, "[%d] [%s] Error sending write value to BLE gattc server, status=%d",
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this->service->client->get_connection_index(), this->service->client->address_str().c_str(), status);
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}
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return status;
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}
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esp_err_t BLECharacteristic::write_value(uint8_t *new_val, int16_t new_val_size) {
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return write_value(new_val, new_val_size, ESP_GATT_WRITE_TYPE_NO_RSP);
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}
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} // namespace esp32_ble_client
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} // namespace esphome
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#endif // USE_ESP32
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