sensor list command

src/helpers/CommonCLI.cpp

@@ -440,6 +440,31 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       } else {
         strcpy(reply, "can't find custom var");
       }
+    } else if (memcmp(command, "sensor list", 11) == 0) {
+      char* dp = reply;
+      int start = 0;
+      int end = sensors.getNumSettings();
+      if (strlen(command) > 11) {
+        start = _atoi(command+12);
+      }
+      if (start >= end) {
+        strcpy(reply, "no custom var");
+      } else {
+        sprintf(dp, "%d vars\n", end);
+        dp = strchr(dp, 0);
+        int i;
+        for (i = start; i < end && (dp-reply < 134); i++) {
+          sprintf(dp, "%s=%s\n", 
+            sensors.getSettingName(i),
+            sensors.getSettingValue(i));
+          dp = strchr(dp, 0);
+        }
+        if (i < end) {
+          sprintf(dp, "... next:%d", i);
+        } else {
+          *(dp-1) = 0; // remove last CR
+        }
+      }
 #if ENV_INCLUDE_GPS == 1
     } else if (memcmp(command, "gps on", 6) == 0) {
       if (sensorSetCustomVar("gps", "1")) {

src/helpers/sensors/EnvironmentSensorManager.cpp

@@ -387,27 +387,34 @@ bool EnvironmentSensorManager::querySensors(uint8_t requester_permissions, Cayen
 
 
 int EnvironmentSensorManager::getNumSettings() const {
+  int settings = 0;
   #if ENV_INCLUDE_GPS
-    return gps_detected ? 1 : 0;  // only show GPS setting if GPS is detected
+    if (gps_detected) settings++;  // only show GPS setting if GPS is detected
-  #else
-    return 0;
   #endif
+  return settings;
 }
 
 const char* EnvironmentSensorManager::getSettingName(int i) const {
+  int settings = 0;
   #if ENV_INCLUDE_GPS
-    return (gps_detected && i == 0) ? "gps" : NULL;
+    if (gps_detected && i == settings++) {
-  #else
+      return "gps";
-    return NULL;
+    }
   #endif
+  // convenient way to add params (needed for some tests)
+//  if (i == settings++) return "param.2";
+  return NULL;
 }
 
 const char* EnvironmentSensorManager::getSettingValue(int i) const {
+  int settings = 0;
   #if ENV_INCLUDE_GPS
-  if (gps_detected && i == 0) {
+    if (gps_detected && i == settings++) {
-    return gps_active ? "1" : "0";
+      return gps_active ? "1" : "0";
-  }
+    }
   #endif
+  // convenient way to add params ...
+//  if (i == settings++) return "2";
   return NULL;
 }