ESPHome  2022.4.0
xiaomi_cgdk2.cpp
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1 #include "xiaomi_cgdk2.h"
2 #include "esphome/core/log.h"
3 
4 #ifdef USE_ESP32
5 
6 namespace esphome {
7 namespace xiaomi_cgdk2 {
8 
9 static const char *const TAG = "xiaomi_cgdk2";
10 
12  ESP_LOGCONFIG(TAG, "Xiaomi CGDK2");
13  ESP_LOGCONFIG(TAG, " Bindkey: %s", format_hex_pretty(this->bindkey_, 16).c_str());
14  LOG_SENSOR(" ", "Temperature", this->temperature_);
15  LOG_SENSOR(" ", "Humidity", this->humidity_);
16  LOG_SENSOR(" ", "Battery Level", this->battery_level_);
17 }
18 
20  if (device.address_uint64() != this->address_) {
21  ESP_LOGVV(TAG, "parse_device(): unknown MAC address.");
22  return false;
23  }
24  ESP_LOGV(TAG, "parse_device(): MAC address %s found.", device.address_str().c_str());
25 
26  bool success = false;
27  for (auto &service_data : device.get_service_datas()) {
28  auto res = xiaomi_ble::parse_xiaomi_header(service_data);
29  if (!res.has_value()) {
30  continue;
31  }
32  if (res->is_duplicate) {
33  continue;
34  }
35  if (res->has_encryption &&
36  (!(xiaomi_ble::decrypt_xiaomi_payload(const_cast<std::vector<uint8_t> &>(service_data.data), this->bindkey_,
37  this->address_)))) {
38  continue;
39  }
40  if (!(xiaomi_ble::parse_xiaomi_message(service_data.data, *res))) {
41  continue;
42  }
43  if (!(xiaomi_ble::report_xiaomi_results(res, device.address_str()))) {
44  continue;
45  }
46  if (res->temperature.has_value() && this->temperature_ != nullptr)
47  this->temperature_->publish_state(*res->temperature);
48  if (res->humidity.has_value() && this->humidity_ != nullptr)
49  this->humidity_->publish_state(*res->humidity);
50  if (res->battery_level.has_value() && this->battery_level_ != nullptr)
51  this->battery_level_->publish_state(*res->battery_level);
52  success = true;
53  }
54 
55  return success;
56 }
57 
58 void XiaomiCGDK2::set_bindkey(const std::string &bindkey) {
59  memset(bindkey_, 0, 16);
60  if (bindkey.size() != 32) {
61  return;
62  }
63  char temp[3] = {0};
64  for (int i = 0; i < 16; i++) {
65  strncpy(temp, &(bindkey.c_str()[i * 2]), 2);
66  bindkey_[i] = std::strtoul(temp, nullptr, 16);
67  }
68 }
69 
70 } // namespace xiaomi_cgdk2
71 } // namespace esphome
72 
73 #endif
void set_bindkey(const std::string &bindkey)
std::string format_hex_pretty(const uint8_t *data, size_t length)
Format the byte array data of length len in pretty-printed, human-readable hex.
Definition: helpers.cpp:199
bool parse_device(const esp32_ble_tracker::ESPBTDevice &device) override
bool decrypt_xiaomi_payload(std::vector< uint8_t > &raw, const uint8_t *bindkey, const uint64_t &address)
Definition: xiaomi_ble.cpp:234
void publish_state(float state)
Publish a new state to the front-end.
Definition: sensor.cpp:70
const std::vector< ServiceData > & get_service_datas() const
bool parse_xiaomi_message(const std::vector< uint8_t > &message, XiaomiParseResult &result)
Definition: xiaomi_ble.cpp:90
optional< XiaomiParseResult > parse_xiaomi_header(const esp32_ble_tracker::ServiceData &service_data)
Definition: xiaomi_ble.cpp:138
bool report_xiaomi_results(const optional< XiaomiParseResult > &result, const std::string &address)
Definition: xiaomi_ble.cpp:322
Definition: a4988.cpp:4