hydreon_rgxx - add resolution option (#6077)

Co-authored-by: functionpointer <suspendfunction@gmail.com>

esphome/components/hydreon_rgxx/__init__.py

@@ -6,6 +6,7 @@ DEPENDENCIES = ["uart"]
 
 hydreon_rgxx_ns = cg.esphome_ns.namespace("hydreon_rgxx")
 RGModel = hydreon_rgxx_ns.enum("RGModel")
+RG15Resolution = hydreon_rgxx_ns.enum("RG15Resolution")
 HydreonRGxxComponent = hydreon_rgxx_ns.class_(
     "HydreonRGxxComponent", cg.PollingComponent, uart.UARTDevice
 )

esphome/components/hydreon_rgxx/hydreon_rgxx.cpp

@@ -22,6 +22,11 @@ void HydreonRGxxComponent::dump_config() {
     ESP_LOGCONFIG(TAG, "  Disable Led: %s", TRUEFALSE(this->disable_led_));
   } else {
     ESP_LOGCONFIG(TAG, "  Model: RG15");
+    if (this->resolution_ == FORCE_HIGH) {
+      ESP_LOGCONFIG(TAG, "  Resolution: high");
+    } else {
+      ESP_LOGCONFIG(TAG, "  Resolution: low");
+    }
   }
   LOG_UPDATE_INTERVAL(this);
 
@@ -195,7 +200,11 @@ void HydreonRGxxComponent::process_line_() {
     ESP_LOGI(TAG, "Boot detected: %s", this->buffer_.substr(0, this->buffer_.size() - 2).c_str());
 
     if (this->model_ == RG15) {
+      if (this->resolution_ == FORCE_HIGH) {
         this->write_str("P\nH\nM\n");  // set sensor to (P)polling mode, (H)high res mode, (M)metric mode
+      } else {
+        this->write_str("P\nL\nM\n");  // set sensor to (P)polling mode, (L)low res mode, (M)metric mode
+      }
     }
 
     if (this->model_ == RG9) {

esphome/components/hydreon_rgxx/hydreon_rgxx.h

@@ -16,6 +16,11 @@ enum RGModel {
   RG15 = 2,
 };
 
+enum RG15Resolution {
+  FORCE_LOW = 1,
+  FORCE_HIGH = 2,
+};
+
 #ifdef HYDREON_RGXX_NUM_SENSORS
 static const uint8_t NUM_SENSORS = HYDREON_RGXX_NUM_SENSORS;
 #else
@@ -37,6 +42,7 @@ class HydreonRGxxComponent : public PollingComponent, public uart::UARTDevice {
   void set_em_sat_sensor(binary_sensor::BinarySensor *sensor) { this->em_sat_sensor_ = sensor; }
 #endif
   void set_model(RGModel model) { model_ = model; }
+  void set_resolution(RG15Resolution resolution) { resolution_ = resolution; }
   void set_request_temperature(bool b) { request_temperature_ = b; }
 
   /// Schedule data readings.
@@ -68,7 +74,10 @@ class HydreonRGxxComponent : public PollingComponent, public uart::UARTDevice {
   int16_t boot_count_ = 0;
   int16_t no_response_count_ = 0;
   std::string buffer_;
+
   RGModel model_ = RG9;
+  RG15Resolution resolution_ = FORCE_HIGH;
+
   int sw_version_ = 0;
   bool too_cold_ = false;
   bool lens_bad_ = false;

esphome/components/hydreon_rgxx/sensor.py

@@ -5,6 +5,7 @@ from esphome.const import (
     CONF_ID,
     CONF_MODEL,
     CONF_MOISTURE,
+    CONF_RESOLUTION,
     CONF_TEMPERATURE,
     DEVICE_CLASS_PRECIPITATION_INTENSITY,
     DEVICE_CLASS_PRECIPITATION,
@@ -14,7 +15,7 @@ from esphome.const import (
     ICON_THERMOMETER,
 )
 
-from . import RGModel, HydreonRGxxComponent
+from . import RGModel, RG15Resolution, HydreonRGxxComponent
 
 UNIT_INTENSITY = "intensity"
 UNIT_MILLIMETERS = "mm"
@@ -37,11 +38,18 @@ RG_MODELS = {
     # 1.100 - https://rainsensors.com/wp-content/uploads/sites/3/2021/03/2021.03.11-rg-9_instructions.pdf
     # 1.200 - https://rainsensors.com/wp-content/uploads/sites/3/2022/03/2022.02.17-rev-1.200-rg-9_instructions.pdf
 }
-SUPPORTED_SENSORS = {
+
+RG15_RESOLUTION = {
+    "low": RG15Resolution.FORCE_LOW,
+    "high": RG15Resolution.FORCE_HIGH,
+}
+
+SUPPORTED_OPTIONS = {
     CONF_ACC: ["RG_15"],
     CONF_EVENT_ACC: ["RG_15"],
     CONF_TOTAL_ACC: ["RG_15"],
     CONF_R_INT: ["RG_15"],
+    CONF_RESOLUTION: ["RG_15"],
     CONF_MOISTURE: ["RG_9"],
     CONF_TEMPERATURE: ["RG_9"],
     CONF_DISABLE_LED: ["RG_9"],
@@ -57,7 +65,7 @@ PROTOCOL_NAMES = {
 
 
 def _validate(config):
-    for conf, models in SUPPORTED_SENSORS.items():
+    for conf, models in SUPPORTED_OPTIONS.items():
         if conf in config:
             if config[CONF_MODEL] not in models:
                 raise cv.Invalid(
@@ -75,6 +83,7 @@ CONFIG_SCHEMA = cv.All(
                 upper=True,
                 space="_",
             ),
+            cv.Optional(CONF_RESOLUTION): cv.enum(RG15_RESOLUTION, upper=False),
             cv.Optional(CONF_ACC): sensor.sensor_schema(
                 unit_of_measurement=UNIT_MILLIMETERS,
                 accuracy_decimals=2,
@@ -139,6 +148,9 @@ async def to_code(config):
             cg.add(var.set_sensor(sens, i))
 
     cg.add(var.set_model(config[CONF_MODEL]))
+    if CONF_RESOLUTION in config:
+        cg.add(var.set_resolution(config[CONF_RESOLUTION]))
+
     cg.add(var.set_request_temperature(CONF_TEMPERATURE in config))
 
     if CONF_DISABLE_LED in config:

tests/test3.yaml

@@ -409,6 +409,7 @@ sensor:
       name: hydreon_total_acc
     r_int:
       name: hydreon_r_int
+    resolution: low
 
   - platform: adc
     pin: VCC