Adds support for b-parasite soil moisture sensor (#1666)

2026-05-28 00:38:28 +02:00 · 2021-04-08 13:59:30 +02:00
parent 99f14e03d4
commit bf01c22e1f
6 changed files with 201 additions and 0 deletions
@@ -0,0 +1,82 @@
+#include "b_parasite.h"
+#include "esphome/core/log.h"
+
+#ifdef ARDUINO_ARCH_ESP32
+
+namespace esphome {
+namespace b_parasite {
+
+static const char* TAG = "b_parasite";
+
+void BParasite::dump_config() {
+  ESP_LOGCONFIG(TAG, "b_parasite");
+  LOG_SENSOR("  ", "Battery Voltage", this->battery_voltage_);
+  LOG_SENSOR("  ", "Temperature", this->temperature_);
+  LOG_SENSOR("  ", "Humidity", this->humidity_);
+  LOG_SENSOR("  ", "Soil Moisture", this->soil_moisture_);
+}
+
+bool BParasite::parse_device(const esp32_ble_tracker::ESPBTDevice& device) {
+  if (device.address_uint64() != address_) {
+    ESP_LOGVV(TAG, "parse_device(): unknown MAC address.");
+    return false;
+  }
+  ESP_LOGVV(TAG, "parse_device(): MAC address %s found.", device.address_str().c_str());
+  const auto& service_datas = device.get_service_datas();
+  if (service_datas.size() != 1) {
+    ESP_LOGE(TAG, "Unexpected service_datas size (%d)", service_datas.size());
+    return false;
+  }
+  const auto& service_data = service_datas[0];
+
+  ESP_LOGVV(TAG, "Service data:");
+  for (const uint8_t byte : service_data.data) {
+    ESP_LOGVV(TAG, "0x%02x", byte);
+  }
+
+  const auto& data = service_data.data;
+
+  // Counter for deduplicating messages.
+  uint8_t counter = data[1] & 0x0f;
+  if (last_processed_counter_ == counter) {
+    ESP_LOGVV(TAG, "Skipping already processed counter (%u)", counter);
+    return false;
+  }
+
+  // Battery voltage in millivolts.
+  uint16_t battery_millivolt = data[2] << 8 | data[3];
+  float battery_voltage = battery_millivolt / 1000.0f;
+
+  // Temperature in 1000 * Celcius.
+  uint16_t temp_millicelcius = data[4] << 8 | data[5];
+  float temp_celcius = temp_millicelcius / 1000.0f;
+
+  // Relative air humidity in the range [0, 2^16).
+  uint16_t humidity = data[6] << 8 | data[7];
+  float humidity_percent = (100.0f * humidity) / (1 << 16);
+
+  // Relative soil moisture in [0 - 2^16).
+  uint16_t soil_moisture = data[8] << 8 | data[9];
+  float moisture_percent = (100.0f * soil_moisture) / (1 << 16);
+
+  if (battery_voltage_ != nullptr) {
+    battery_voltage_->publish_state(battery_voltage);
+  }
+  if (temperature_ != nullptr) {
+    temperature_->publish_state(temp_celcius);
+  }
+  if (humidity_ != nullptr) {
+    humidity_->publish_state(humidity_percent);
+  }
+  if (soil_moisture_ != nullptr) {
+    soil_moisture_->publish_state(moisture_percent);
+  }
+
+  last_processed_counter_ = counter;
+  return true;
+}
+
+}  // namespace b_parasite
+}  // namespace esphome
+
+#endif  // ARDUINO_ARCH_ESP32