diff --git a/srv/task.c b/srv/task.c
index 0baba14..72efc46 100644
--- a/srv/task.c
+++ b/srv/task.c
@@ -11,6 +11,7 @@
 #include "task.h"
 #include "../drv/stk.h"
 #include "error.h"
+#include "debug.h"
 
 
 //--local definitions-----------------------------------------------------------
@@ -21,7 +22,6 @@ struct TaskContext {
 	Task function;
 	uint32_t delay_ms;
 	uint8_t state;
-	uint8_t priority;
 };
 
 void task_callback(void);
@@ -39,36 +39,38 @@ void task_start_scheduler(void)
 {
 	while (1) {
 		uint32_t delay = UINT32_MAX;
-		for (uint8_t priority = 0; priority < UINT8_MAX; ++priority) {
 
-			bool task_runned = false;
-			for (uint8_t i = 0; i < task_nb; ++i) {
-				if (task_list[i].function != nullptr) {
-					if (task_list[i].priority == priority) {
-						if (task_list[i].delay_ms == 0) {
-							task_runned = true;
-							struct TaskReturn ret
-								= task_list[i].function(task_list[i].state);
-							if (ret.state == _TASK_COUNT_EXIT) {
-								task_list[i].function = nullptr;
-							} else {
-								task_list[i].delay_ms = ret.delay_ms;
-								task_list[i].state = ret.state;
-							}
-						}
-						if (delay > task_list[i].delay_ms) {
-							delay = task_list[i].delay_ms;
-						}
+		bool task_runned = false;
+		for (uint8_t i = 0; i < task_nb; ++i) {
+			if (task_list[i].function != nullptr) {
+				if (task_list[i].delay_ms == 0) {
+					task_runned = true;
+					debug_trace("%u", 1);
+					debug_trace("%u", i + 2);
+					struct TaskReturn ret
+						= task_list[i].function(task_list[i].state);
+					debug_trace("%u", i + 2);
+					debug_trace("%u", 1);
+					if (ret.state == _TASK_COUNT_EXIT) {
+						task_list[i].function = nullptr;
+					} else {
+						task_list[i].delay_ms = ret.delay_ms;
+						task_list[i].state = ret.state;
 					}
 				}
-			}
-
-			if (task_runned) {
-				break;
+				if (delay > task_list[i].delay_ms) {
+					delay = task_list[i].delay_ms;
+				}
 			}
 		}
 
+		if (task_runned) {
+			break;
+		}
+
 		if (delay > 0) {
+			debug_trace("%u", 1);
+			debug_trace("%u", 0);
 			stk_configure(delay * 1000, task_callback);
 			stk_start();
 			__asm("wfi");
@@ -83,13 +85,16 @@ void task_start_scheduler(void)
 					task_list[i].delay_ms -= delay;
 				}
 			}
+
+			debug_trace("%u", 0);
+			debug_trace("%u", 1);
 		}
 	}
 
 	//never returns
 }
 
-void task_start(Task task, uint8_t priority)
+void task_start(Task task)
 {
 	for (uint8_t i = 0; i < MAX_TASK_NB; ++i) {
 		if (task_list[i].function == nullptr) {
@@ -97,7 +102,6 @@ void task_start(Task task, uint8_t priority)
 			task_list[i].function = task;
 			task_list[i].delay_ms = 0;
 			task_list[i].state = 0;
-			task_list[i].priority = priority;
 
 			++task_nb;
 			return;
@@ -133,9 +137,9 @@ bool task_is_running(Task task)
 }
 
 
-
 //--local functions-------------------------------------------------------------
 
 void task_callback(void) {
 	stk_stop();
 }
+
diff --git a/srv/task.h b/srv/task.h
index 361da76..435cca3 100644
--- a/srv/task.h
+++ b/srv/task.h
@@ -48,7 +48,7 @@ typedef struct TaskReturn(*Task)(uint8_t);
 
 void task_start_scheduler(void);
 
-void task_start(Task task, uint8_t priority);
+void task_start(Task task);
 void task_stop(Task task);
 bool task_is_running(Task task);