feat(nodes): using an explicit thread, as it may cause the huge battery usage

nodes/src/main.c

@@ -10,9 +10,9 @@
 
 #include "supervisor.h"
 
-int main(void){
-    supervisor_init();
-    supervisor_run();
-    // should never come here
-	return 0;
-}
+// size of a stack used by the supervisor thread
+#define STACKSIZE 1024
+// scheduling priority used by the supervisor thread
+#define PRIORITY 7
+
+K_THREAD_DEFINE(supervisor_id, STACKSIZE, thread_supervisor, NULL, NULL, NULL, PRIORITY, 0, 0);

nodes/src/supervisor.c

@@ -4,6 +4,16 @@ const int SLEEP_GRANULARITY = 2;                    // [min]
 const int SLEEP_MIN_DURATION = SLEEP_GRANULARITY;   // [min]
 const int SLEEP_MAX_DURATION = 30;                  // [min]
 
+// Zephyr related stuff
+
+void thread_supervisor(){
+    supervisor_init();
+    supervisor_run();
+    //should never return
+}
+
+// supervisor stuff
+
 enum error_code supervisor_init(){
     enum error_code ret = init_failed;
     if(

nodes/src/supervisor.h

@@ -16,6 +16,11 @@ extern const int SLEEP_GRANULARITY;     // [min]
 extern const int SLEEP_MIN_DURATION;    // [min]
 extern const int SLEEP_MAX_DURATION;    // [min]
 
+/**
+*   @brief  thread function to run the supervisor in zephyr environment
+*/
+void thread_supervisor();
+
 /**
 *   @brief  init the supervisor, and thus the complete plein_de_ee application
 *   @return init_failed upon any error occurring during the initialisation of any module