diff --git a/src/bridge.c b/src/bridge.c
index 013a98c..948d134 100644
--- a/src/bridge.c
+++ b/src/bridge.c
@@ -9,6 +9,16 @@ bdg_sm_state_t bridge_state;
 
 sm_trans_t bridge_sm_transitions[] = 
 {
+	{
+		.from_state = BRIDGE_SM_START,
+		.to_state = BRIDGE_SM_INIT_IO,
+		.trans_fct = brdg_BothGndOn
+	},
+	{
+		.from_state = BRIDGE_SM_INIT_IO,
+		.to_state = HB1_PWR_ON,
+		.trans_fct = brdg_Hb1PowerOn
+	},
 	{
 		.from_state = HB1_GND_ON,
 		.to_state = HB1_PWR_ON,
@@ -42,10 +52,16 @@ sm_trans_t bridge_sm_transitions[] =
 };
 
 sm_t bridge_statemachine = {
-	.current_state = HB1_PWR_OFF,
+	.current_state = BRIDGE_SM_START,
 	.transitions = bridge_sm_transitions
 };
 
+void brdg_BothGndOn(void)
+{
+	setPin(&PORTB, PB6);
+	setPin(&PORTB, PB4);
+}
+
 void brdg_Hb1GndOn(void)
 {
 	/* We turn GND of half-bridge 1 on */
diff --git a/src/include/bridge.h b/src/include/bridge.h
index 52f1d7c..dfa4a03 100644
--- a/src/include/bridge.h
+++ b/src/include/bridge.h
@@ -1,5 +1,7 @@
 typedef enum
 {
+	BRIDGE_SM_START,
+	BRIDGE_SM_INIT_IO,
 	HB1_GND_ON,
 	HB1_PWR_ON,
 	HB1_PWR_OFF,
@@ -9,6 +11,8 @@ typedef enum
 } bdg_sm_state_t;
 
 
+void brdg_BothGndOn(void);
+
 void brdg_Hb1GndOn(void);
 void brdg_Hb1PowerOn(void);
 void brdg_Hb1PowerOff(void);