diff --git a/soft/PjtKEIL_StepSon/Src/principal.c b/soft/PjtKEIL_StepSon/Src/principal.c
index b0b78ce..1e10b02 100644
--- a/soft/PjtKEIL_StepSon/Src/principal.c
+++ b/soft/PjtKEIL_StepSon/Src/principal.c
@@ -20,8 +20,10 @@ int main(void)
 CLOCK_Configure();
 
 Timer_1234_Init_ff(TIM4, 65520000);	
-Active_IT_Debordement_Timer(TIM4, 2, CallbackSon);	
-Run_Timer(TIM4);
+Active_IT_Debordement_Timer(TIM4, 2, GestionSon);
+GPIO_Configure(GPIOB, 0, OUTPUT, ALT_PPULL);
+PWM_Init_ff(TIM3, 3, PERIODE_PWM);
+StartSon();