WIP: temperature coeff

fs_src/index.html

@@ -773,6 +773,10 @@ <h1 id="head">Sensor</h1>
             <label for="update_interval">Update Interval:</label>
             <input type="number" id="update_interval" min="1" max="1000" class="short"><span>&nbsp; s</span>
           </div>
+          <div class="form-control">
+            <label for="offset">Offset (for calibration):</label>
+            <input type="text" id="offset">
+          </div>
           <div class="button-container">
             <button id="save_btn">
               <label><span id="save_spinner"></span>Save</label>

fs_src/script.js

@@ -440,6 +440,7 @@ function tsSetConfig(c) {
     name: name,
     unit: parseInt(el(c, "unit").value),
     update_interval: parseInt(el(c, "update_interval").value),
+    offset: parseFloat(el(c, "offset").value),
   };
   setComponentConfig(c, cfg, el(c, "save_spinner"));
 }
@@ -792,6 +793,7 @@ function updateComponent(cd) {
       updateInnerText(el(c, "value"), v);
       selectIfNotModified(el(c, "unit"), cd.unit);
       setValueIfNotModified(el(c, "update_interval"), cd.update_interval);
+      setValueIfNotModified(el(c, "offset"), cd.offset);
       break;
     }
     case Component_Type.kStatelessSwitch:

mos.yml

@@ -43,6 +43,7 @@ config_schema:
   - ["ts.name", "s", "", {title: "Name of the sensor"}]
   - ["ts.unit", "i", 0, {title: "Display unit of the Sensor"}] # 0 - Celsius, 1 - Farenheit
   - ["ts.update_interval", "i", 1, {title: "Update Interval of the sensor in seconds, minimum 1s"}]
+  - ["ts.offset", "f", 0, {title: "Offset value can be used for calibration"}]
 
   - ["sw", "o", {title: "Switch settings", abstract: true}]
   - ["sw.name", "s", "", {title: "Name of the switch"}]

src/shelly_hap_temperature_sensor.cpp

@@ -57,8 +57,8 @@ Status TemperatureSensor::SetConfig(const std::string &config_json,
   struct mgos_config_ts cfg = *cfg_;
   cfg.name = nullptr;
   json_scanf(config_json.c_str(), config_json.size(),
-             "{name: %Q, unit: %d, update_interval: %d", &cfg.name, &cfg.unit,
-             &cfg.update_interval);
+             "{name: %Q, unit: %d, update_interval: %d, offset: %f}", &cfg.name,
+             &cfg.unit, &cfg.update_interval, &cfg.offset);
 
   mgos::ScopedCPtr name_owner((void *) cfg.name);
   // Validation.
@@ -84,6 +84,9 @@ Status TemperatureSensor::SetConfig(const std::string &config_json,
     cfg_->update_interval = cfg.update_interval;
     temp_sensor_->StartUpdating(cfg_->update_interval * 1000);
   }
+  if (cfg_->offset != cfg.offset) {
+    cfg_->offset = cfg.offset;
+  }
   return Status::OK();
 }
 
@@ -113,7 +116,7 @@ Status TemperatureSensor::Init() {
           return kHAPError_Busy;
         }
         float temp = static_cast<float>(tempval.ValueOrDie());
-        *value = truncf(temp * 10) / 10;
+        *value = truncf(temp * 10) / 10 + &cfg->offset;
         return kHAPError_None;
       },
 
@@ -149,11 +152,13 @@ StatusOr<std::string> TemperatureSensor::GetInfo() const {
 StatusOr<std::string> TemperatureSensor::GetInfoJSON() const {
   std::string res = mgos::JSONPrintStringf(
       "{id: %d, type: %d, name: %Q, unit: %d, "
-      "update_interval: %d, ",
-      id(), type(), cfg_->name, cfg_->unit, cfg_->update_interval);
+      "update_interval: %d, offset: %f",
+      id(), type(), cfg_->name, cfg_->unit, cfg_->update_interval,
+      cfg_->offset);
   auto tempval = temp_sensor_->GetTemperature();
   if (tempval.ok()) {
-    mgos::JSONAppendStringf(&res, "value: %.1f", tempval.ValueOrDie());
+    mgos::JSONAppendStringf(&res, "value: %.1f",
+                            tempval.ValueOrDie() + cfg_->offset);
   } else {
     mgos::JSONAppendStringf(&res, "error: %.1f", tempval.ValueOrDie());
   }