esphome/esphome/components/inkbird_ibsth1_mini/inkbird_ibsth1_mini.cpp
2022-08-01 13:08:19 +12:00

111 lines
3.8 KiB
C++

#include "inkbird_ibsth1_mini.h"
#include "esphome/core/log.h"
#ifdef USE_ESP32
namespace esphome {
namespace inkbird_ibsth1_mini {
static const char *const TAG = "inkbird_ibsth1_mini";
void InkbirdIbstH1Mini::dump_config() {
ESP_LOGCONFIG(TAG, "Inkbird IBS TH1 MINI");
LOG_SENSOR(" ", "Temperature", this->temperature_);
LOG_SENSOR(" ", "External Temperature", this->external_temperature_);
LOG_SENSOR(" ", "Humidity", this->humidity_);
LOG_SENSOR(" ", "Battery Level", this->battery_level_);
}
bool InkbirdIbstH1Mini::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
// The below is based on my research and reverse engineering of a single device
// It is entirely possible that some of that may be inaccurate or incomplete
// for Inkbird IBS-TH1 Mini device we expect
// 1) expected mac address
// 2) device address type == PUBLIC
// 3) no service data
// 4) one manufacturer data
// 5) the manufacturer data should contain a 16-bit uuid amd a 7-byte data vector
// 6) the 7-byte data component should have data[2] == 0 and data[6] == 8
// the address should match the address we declared
if (device.address_uint64() != this->address_) {
ESP_LOGVV(TAG, "parse_device(): unknown MAC address.");
return false;
}
if (device.get_address_type() != BLE_ADDR_TYPE_PUBLIC) {
ESP_LOGVV(TAG, "parse_device(): address is not public");
return false;
}
if (!device.get_service_datas().empty()) {
ESP_LOGVV(TAG, "parse_device(): service_data is expected to be empty");
return false;
}
auto mnf_datas = device.get_manufacturer_datas();
if (mnf_datas.size() != 1) {
ESP_LOGVV(TAG, "parse_device(): manufacturer_datas is expected to have a single element");
return false;
}
auto mnf_data = mnf_datas[0];
if (mnf_data.uuid.get_uuid().len != ESP_UUID_LEN_16) {
ESP_LOGVV(TAG, "parse_device(): manufacturer data element is expected to have uuid of length 16");
return false;
}
if (mnf_data.data.size() != 7) {
ESP_LOGVV(TAG, "parse_device(): manufacturer data element length is expected to be of length 7");
return false;
}
if ((mnf_data.data[6] != 8) && (mnf_data.data[6] != 6)) {
ESP_LOGVV(TAG, "parse_device(): unexpected data");
return false;
}
// sensor output encoding
// data[5] is a battery level
// data[0] and data[1] is humidity * 100 (in pct)
// uuid is a temperature * 100 (in Celsius)
// when data[2] == 0 temperature is from internal sensor (IBS-TH1 or IBS-TH1 Mini)
// when data[2] == 1 temperature is from external sensor (IBS-TH1 only)
// Create empty variables to pass automatic checks
auto temperature = NAN;
auto external_temperature = NAN;
// Read bluetooth data into variable
auto measured_temperature = ((int16_t) mnf_data.uuid.get_uuid().uuid.uuid16) / 100.0f;
// Set temperature or external_temperature based on which sensor is in use
if (mnf_data.data[2] == 0) {
temperature = measured_temperature;
} else if (mnf_data.data[2] == 1) {
external_temperature = measured_temperature;
} else {
ESP_LOGVV(TAG, "parse_device(): unknown sensor type");
return false;
}
auto battery_level = mnf_data.data[5];
auto humidity = ((mnf_data.data[1] << 8) + mnf_data.data[0]) / 100.0f;
// Send temperature only if the value is set
if (!std::isnan(temperature) && this->temperature_ != nullptr) {
this->temperature_->publish_state(temperature);
}
if (!std::isnan(external_temperature) && this->external_temperature_ != nullptr) {
this->external_temperature_->publish_state(external_temperature);
}
if (this->humidity_ != nullptr) {
this->humidity_->publish_state(humidity);
}
if (this->battery_level_ != nullptr) {
this->battery_level_->publish_state(battery_level);
}
return true;
}
} // namespace inkbird_ibsth1_mini
} // namespace esphome
#endif