Allow the platform to provide its own main loop

os/contiki-main.c

@@ -104,6 +104,9 @@ main(void)
 
   watchdog_start();
 
+#if PLATFORM_PROVIDES_MAIN_LOOP
+  platform_main_loop();
+#else
   while(1) {
     uint8_t r;
     do {
@@ -113,6 +116,7 @@ main(void)
 
     platform_idle();
   }
+#endif
 }
 /*---------------------------------------------------------------------------*/
 /**

os/sys/platform.h

@@ -86,6 +86,18 @@
 #define PLATFORM_STARTUP_VERBOSE 1
 #endif
 /*---------------------------------------------------------------------------*/
+/**
+ * Controls whether the platform provides a custom main loop
+ *
+ * By default we will use the main loop provided here. This however does not
+ * work for some platforms, so we allow them to override it.
+ */
+#ifdef PLATFORM_CONF_PROVIDES_MAIN_LOOP
+#define PLATFORM_PROVIDES_MAIN_LOOP PLATFORM_CONF_PROVIDES_MAIN_LOOP
+#else
+#define PLATFORM_PROVIDES_MAIN_LOOP 0
+#endif
+/*---------------------------------------------------------------------------*/
 /**
  * \brief Basic (Stage 1) platform driver initialisation.
  *
@@ -167,6 +179,17 @@ void platform_init_stage_three(void);
  */
 void platform_idle(void);
 /*---------------------------------------------------------------------------*/
+/**
+ * \brief The platform's main loop, if provided
+ *
+ * If the platform developer wishes to do so, it is possible to override the
+ * main loop provided by Contiki-NG's core. To do so, define
+ * PLATFORM_CONF_PROVIDES_MAIN_LOOP as 1.
+ *
+ * It is the port developer's responsibility to implement this function.
+ */
+void platform_main_loop(void);
+/*---------------------------------------------------------------------------*/
 #endif /* PLATFORM_H_ */
 /*---------------------------------------------------------------------------*/
 /**