Improve method for disabling std sensors, incl in examples

examples/bme280_example.cpp

@@ -21,10 +21,9 @@ ReactESP app([] () {
   Debug.setSerialEnabled(true);
   #endif
 
-  // true will disable systemHz, freemem, uptime, and ipaddress "sensors"
-  bool disableStandardSensors = false;
-
-  sensesp_app = new SensESPApp(disableStandardSensors);
+  // Create the SensESPApp with whatever "standard sensors" you want: noStdSensors, allStdSensors, or uptimeOnly.
+  // The default is allStdSensors.
+  sensesp_app = new SensESPApp(uptimeOnly);
 
   // Create a BME280, which represents the physical sensor.
   // 0x77 is the default address. Some chips use 0x76, which is shown here.

examples/ina219_example.cpp

@@ -21,10 +21,9 @@ ReactESP app([] () {
   Debug.setSerialEnabled(true);
   #endif
 
-  // true will disable systemHz, freemem, uptime, and ipaddress "sensors"
-  bool disableStandardSensors = true;
-
-  sensesp_app = new SensESPApp(disableStandardSensors);
+  // Create the SensESPApp with whatever "standard sensors" you want: noStdSensors, allStdSensors, or uptimeOnly.
+  // The default is allStdSensors.
+  sensesp_app = new SensESPApp(allStdSensors);
 
   // Create an INA219, which represents the physical sensor.
   // 0x40 is the default address. Chips can be modified to use 0x41 (shown here), 0x44, or 0x45.

examples/sht31_example.cpp

@@ -21,10 +21,9 @@ ReactESP app([] () {
   Debug.setSerialEnabled(true);
   #endif
 
-  // true will disable systemHz, freemem, uptime, and ipaddress "sensors"
-  bool disableStandardSensors = false;
-
-  sensesp_app = new SensESPApp(disableStandardSensors);
+  // Create the SensESPApp with whatever "standard sensors" you want: noStdSensors, allStdSensors, or uptimeOnly.
+  // The default is allStdSensors.
+  sensesp_app = new SensESPApp(noStdSensors);
 
   // Create a SHT31, which represents the physical sensor.
   // 0x44 is the default address. Some chips use 0x45, which is shown here.

src/sensesp_app.cpp

@@ -21,7 +21,7 @@ RemoteDebug Debug;
 
 // FIXME: Setting up the system is too verbose and repetitive
 
-SensESPApp::SensESPApp(bool disableStdSensors) : disableStdSensors{disableStdSensors} {
+SensESPApp::SensESPApp(StdSensors_t stdSensors) : stdSensors{stdSensors} {
   // initialize filesystem
 
   if (!SPIFFS.begin()) {
@@ -35,9 +35,7 @@ SensESPApp::SensESPApp(bool disableStdSensors) : disableStdSensors{disableStdSen
 
   // setup standard sensors and their transforms
 
-  if(!disableStdSensors) {
-    setup_standard_sensors(hostname);
-  }
+  setup_standard_sensors(hostname, stdSensors);
 
   // create the SK delta object
 
@@ -70,41 +68,46 @@ SensESPApp::SensESPApp(bool disableStdSensors) : disableStdSensors{disableStdSen
     sk_delta, ws_connected_cb, ws_delta_cb);
 }
 
-void SensESPApp::setup_standard_sensors(ObservableValue<String>* hostname) {
+void SensESPApp::setup_standard_sensors(ObservableValue<String>* hostname, StdSensors_t stdSensors) {
 
-  // connect systemhz
+  if (stdSensors == noStdSensors) {return;};
 
-  connect_1to1_h<SystemHz, SKOutput<float>>(
-    new SystemHz(),
-    new SKOutput<float>(),
-    hostname
-  );
+  if (stdSensors == allStdSensors) {
+    // connect systemhz
 
-  String hostname_str = hostname->get();
+    connect_1to1_h<SystemHz, SKOutput<float>>(
+      new SystemHz(),
+      new SKOutput<float>(),
+      hostname
+    );
 
-  // connect freemem
+    // connect freemem
 
-  connect_1to1_h<FreeMem, SKOutput<float>>(
-    new FreeMem(),
-    new SKOutput<float>(),
-    hostname
-  );
+    connect_1to1_h<FreeMem, SKOutput<float>>(
+      new FreeMem(),
+      new SKOutput<float>(),
+      hostname
+    );
 
-  // connect uptime
+    // connect ip address
 
-  connect_1to1_h<Uptime, SKOutput<float>>(
-    new Uptime(),
-    new SKOutput<float>(),
-    hostname
-  );
+    connect_1to1_h<IPAddrDev, SKOutput<String>>(
+      new IPAddrDev(),
+      new SKOutput<String>(),
+      hostname
+    );
+  }
 
-  // connect ip address
+  if (stdSensors == allStdSensors || stdSensors == uptimeOnly) {
+  // connect uptime
 
-  connect_1to1_h<IPAddrDev, SKOutput<String>>(
-    new IPAddrDev(),
-    new SKOutput<String>(),
-    hostname
-  );
+    connect_1to1_h<Uptime, SKOutput<float>>(
+      new Uptime(),
+      new SKOutput<float>(),
+      hostname
+    );
+  }
+
 }
 
 void SensESPApp::enable() {

src/sensesp_app.h

@@ -15,9 +15,11 @@
 #include "system/valueconsumer.h"
 #include "system/observablevalue.h"
 
+enum StdSensors_t { allStdSensors, noStdSensors, uptimeOnly };
+
 class SensESPApp {
  public:
-  SensESPApp(bool disableStdSensors = false);
+  SensESPApp(StdSensors_t stdSensors = allStdSensors);
   void enable();
   void reset();
   String get_hostname();
@@ -62,8 +64,8 @@ class SensESPApp {
 
 
  private:
-  bool disableStdSensors;
-  void setup_standard_sensors(ObservableValue<String>* hostname);
+  StdSensors_t stdSensors;
+  void setup_standard_sensors(ObservableValue<String>* hostname, StdSensors_t stdSensors = allStdSensors);
 
   HTTPServer* http_server;
   LedBlinker led_blinker;