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Adds support for b-parasite's v2 BLE protocol (#3290)

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rbaron 2022-03-15 23:05:29 +01:00 committed by GitHub
parent 99f5ed1461
commit 68e957c147
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1 changed files with 11 additions and 5 deletions
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16
esphome/components/b_parasite/b_parasite.cpp
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@ -38,7 +38,7 @@ bool BParasite::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
const auto &data = service_data.data; const auto &data = service_data.data;
const uint8_t protocol_version = data[0] >> 4; const uint8_t protocol_version = data[0] >> 4;
if (protocol_version != 1) { if (protocol_version != 1 && protocol_version != 2) {
ESP_LOGE(TAG, "Unsupported protocol version: %u", protocol_version); ESP_LOGE(TAG, "Unsupported protocol version: %u", protocol_version);
return false; return false;
} }
@ -57,9 +57,15 @@ bool BParasite::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
uint16_t battery_millivolt = data[2] << 8 | data[3]; uint16_t battery_millivolt = data[2] << 8 | data[3];
float battery_voltage = battery_millivolt / 1000.0f; float battery_voltage = battery_millivolt / 1000.0f;
// Temperature in 1000 * Celsius. // Temperature in 1000 * Celsius (protocol v1) or 100 * Celsius (protocol v2).
uint16_t temp_millicelcius = data[4] << 8 | data[5]; float temp_celsius;
float temp_celcius = temp_millicelcius / 1000.0f; if (protocol_version == 1) {
uint16_t temp_millicelsius = data[4] << 8 | data[5];
temp_celsius = temp_millicelsius / 1000.0f;
} else {
int16_t temp_centicelsius = data[4] << 8 | data[5];
temp_celsius = temp_centicelsius / 100.0f;
}
// Relative air humidity in the range [0, 2^16). // Relative air humidity in the range [0, 2^16).
uint16_t humidity = data[6] << 8 | data[7]; uint16_t humidity = data[6] << 8 | data[7];
@ -76,7 +82,7 @@ bool BParasite::parse_device(const esp32_ble_tracker::ESPBTDevice &device) {
battery_voltage_->publish_state(battery_voltage); battery_voltage_->publish_state(battery_voltage);
} }
if (temperature_ != nullptr) { if (temperature_ != nullptr) {
temperature_->publish_state(temp_celcius); temperature_->publish_state(temp_celsius);
} }
if (humidity_ != nullptr) { if (humidity_ != nullptr) {
humidity_->publish_state(humidity_percent); humidity_->publish_state(humidity_percent);