diff --git a/nrf5/hal/hal_timer.c b/nrf5/hal/hal_timer.c
index ac0d20846c..3046f74383 100644
--- a/nrf5/hal/hal_timer.c
+++ b/nrf5/hal/hal_timer.c
@@ -33,6 +33,12 @@ void hal_timer_init(hal_timer_conf_t const * p_timer_conf) {
 
 }
 
+void hal_timer_start(uint8_t id) {
+}
+
+void hal_timer_stop(uint8_t id) {
+}
+
 void TIMER0_IRQHandler(void) {
 
 }
diff --git a/nrf5/hal/hal_timer.h b/nrf5/hal/hal_timer.h
index 245a33955b..32e53c498e 100644
--- a/nrf5/hal/hal_timer.h
+++ b/nrf5/hal/hal_timer.h
@@ -64,4 +64,8 @@ typedef struct {
 
 void hal_timer_init(hal_timer_conf_t const * p_timer_config);
 
+void hal_timer_start(uint8_t id);
+
+void hal_timer_stop(uint8_t id);
+
 #endif // HAL_TIMER_H__