Read memory usage

- reading memory usage using shepherd-task

shepherd/shepherd_sniff.c

@@ -53,6 +53,8 @@ static void shepherd_task(void *args) {
     */
     printf("-----------------------------------------\n");
     vTaskDelay(15000 / portTICK_PERIOD_MS);
+    // get memory usage
+    printf("Memory usage : %d bytes \n", (2048-uxTaskGetStackHighWaterMark(NULL))); 
   }
   vTaskDelete(NULL);
 }

src/main.cpp

@@ -48,8 +48,8 @@ void run_time_stats(void *pvParameter) {
     printf("--------Run time stats ---------------\n");
     char pbuf[100];
     vTaskGetRunTimeStats(pbuf);
-    printf("%s\r\n", pbuf);
-    printf("---------------------------------------\n");
+    printf("%s", pbuf);
+    printf("\n---------------------------------------\n");
     vTaskDelay(15000 / portTICK_PERIOD_MS);
   }
 }