mirror of https://github.com/esphome/esphome.git
76 lines
2.9 KiB
C++
76 lines
2.9 KiB
C++
#include "automation.h"
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#include <esp_bt_defs.h>
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#include <esp_gap_ble_api.h>
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#include <esp_gattc_api.h>
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#include "esphome/core/log.h"
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namespace esphome {
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namespace ble_client {
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static const char *const TAG = "ble_client.automation";
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void BLEWriterClientNode::write(const std::vector<uint8_t> &value) {
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if (this->node_state != espbt::ClientState::ESTABLISHED) {
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ESP_LOGW(TAG, "Cannot write to BLE characteristic - not connected");
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return;
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} else if (this->ble_char_handle_ == 0) {
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ESP_LOGW(TAG, "Cannot write to BLE characteristic - characteristic not found");
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return;
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}
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esp_gatt_write_type_t write_type;
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if (this->char_props_ & ESP_GATT_CHAR_PROP_BIT_WRITE) {
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write_type = ESP_GATT_WRITE_TYPE_RSP;
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ESP_LOGD(TAG, "Write type: ESP_GATT_WRITE_TYPE_RSP");
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} else if (this->char_props_ & ESP_GATT_CHAR_PROP_BIT_WRITE_NR) {
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write_type = ESP_GATT_WRITE_TYPE_NO_RSP;
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ESP_LOGD(TAG, "Write type: ESP_GATT_WRITE_TYPE_NO_RSP");
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} else {
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ESP_LOGE(TAG, "Characteristic %s does not allow writing", this->char_uuid_.to_string().c_str());
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return;
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}
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ESP_LOGVV(TAG, "Will write %d bytes: %s", value.size(), format_hex_pretty(value).c_str());
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esp_err_t err =
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esp_ble_gattc_write_char(this->parent()->get_gattc_if(), this->parent()->get_conn_id(), this->ble_char_handle_,
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value.size(), const_cast<uint8_t *>(value.data()), write_type, ESP_GATT_AUTH_REQ_NONE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Error writing to characteristic: %s!", esp_err_to_name(err));
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}
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}
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void BLEWriterClientNode::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
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esp_ble_gattc_cb_param_t *param) {
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switch (event) {
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case ESP_GATTC_REG_EVT:
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break;
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case ESP_GATTC_OPEN_EVT:
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this->node_state = espbt::ClientState::ESTABLISHED;
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ESP_LOGD(TAG, "Connection established with %s", ble_client_->address_str().c_str());
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break;
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case ESP_GATTC_SEARCH_CMPL_EVT: {
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auto *chr = this->parent()->get_characteristic(this->service_uuid_, this->char_uuid_);
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if (chr == nullptr) {
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ESP_LOGW("ble_write_action", "Characteristic %s was not found in service %s",
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this->char_uuid_.to_string().c_str(), this->service_uuid_.to_string().c_str());
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break;
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}
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this->ble_char_handle_ = chr->handle;
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this->char_props_ = chr->properties;
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this->node_state = espbt::ClientState::ESTABLISHED;
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ESP_LOGD(TAG, "Found characteristic %s on device %s", this->char_uuid_.to_string().c_str(),
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ble_client_->address_str().c_str());
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break;
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}
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case ESP_GATTC_DISCONNECT_EVT:
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this->node_state = espbt::ClientState::IDLE;
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this->ble_char_handle_ = 0;
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ESP_LOGD(TAG, "Disconnected from %s", ble_client_->address_str().c_str());
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break;
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default:
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break;
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}
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}
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} // namespace ble_client
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} // namespace esphome
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