diff --git a/Core/Src/main.c b/Core/Src/main.c
index e67afdc..6c4f4d8 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -110,9 +110,22 @@ int main(void)
 
   /* Infinite loop */
   /* USER CODE BEGIN WHILE */
+  HAL_Delay(3000);  // Attends 3 secondes après le boot
+  char test[] = "Hello from STM32\r\n";
+  CDC_Transmit_FS((uint8_t*)test, strlen(test));
   while (1)
   {
     /* USER CODE END WHILE */
+	  // LED ON
+	  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
+	  char msg_on[] = "LED ON\r\n";
+	  while(CDC_Transmit_FS((uint8_t*)msg_on, strlen(msg_on)) == USBD_BUSY);
+	  HAL_Delay(1000);
+
+      HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_RESET);
+      char msg_off[] = "LED OFF\r\n";
+      while(CDC_Transmit_FS((uint8_t*)msg_off, strlen(msg_off)) == USBD_BUSY);
+      HAL_Delay(1000);
 
     /* USER CODE BEGIN 3 */
   }
@@ -415,7 +428,6 @@ static void MX_TIM8_Init(void)
 
   /* USER CODE END TIM8_Init 0 */
 
-  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
   TIM_MasterConfigTypeDef sMasterConfig = {0};
   TIM_OC_InitTypeDef sConfigOC = {0};
   TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};
@@ -430,15 +442,6 @@ static void MX_TIM8_Init(void)
   htim8.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
   htim8.Init.RepetitionCounter = 0;
   htim8.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
-  if (HAL_TIM_Base_Init(&htim8) != HAL_OK)
-  {
-    Error_Handler();
-  }
-  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
-  if (HAL_TIM_ConfigClockSource(&htim8, &sClockSourceConfig) != HAL_OK)
-  {
-    Error_Handler();
-  }
   if (HAL_TIM_PWM_Init(&htim8) != HAL_OK)
   {
     Error_Handler();
@@ -457,10 +460,6 @@ static void MX_TIM8_Init(void)
   sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
   sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
   sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
-  if (HAL_TIM_PWM_ConfigChannel(&htim8, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
-  {
-    Error_Handler();
-  }
   if (HAL_TIM_PWM_ConfigChannel(&htim8, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
   {
     Error_Handler();
@@ -505,7 +504,7 @@ static void MX_GPIO_Init(void)
   __HAL_RCC_GPIOB_CLK_ENABLE();
 
   /*Configure GPIO pin Output Level */
-  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);
+  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_6, GPIO_PIN_RESET);
 
   /*Configure GPIO pin Output Level */
   HAL_GPIO_WritePin(GPIOA, GPIO_PIN_10, GPIO_PIN_RESET);
@@ -526,8 +525,8 @@ static void MX_GPIO_Init(void)
   GPIO_InitStruct.Alternate = GPIO_AF15_EVENTOUT;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
-  /*Configure GPIO pin : PB0 */
-  GPIO_InitStruct.Pin = GPIO_PIN_0;
+  /*Configure GPIO pins : PB0 PB6 */
+  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_6;
   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
diff --git a/Core/Src/stm32g4xx_hal_msp.c b/Core/Src/stm32g4xx_hal_msp.c
index 9f9d3c2..0a2c442 100644
--- a/Core/Src/stm32g4xx_hal_msp.c
+++ b/Core/Src/stm32g4xx_hal_msp.c
@@ -176,17 +176,7 @@ void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* htim_base)
   /* USER CODE BEGIN TIM1_MspInit 1 */
 
   /* USER CODE END TIM1_MspInit 1 */
-  }
-  else if(htim_base->Instance==TIM8)
-  {
-  /* USER CODE BEGIN TIM8_MspInit 0 */
 
-  /* USER CODE END TIM8_MspInit 0 */
-    /* Peripheral clock enable */
-    __HAL_RCC_TIM8_CLK_ENABLE();
-  /* USER CODE BEGIN TIM8_MspInit 1 */
-
-  /* USER CODE END TIM8_MspInit 1 */
   }
 
 }
@@ -259,6 +249,29 @@ void HAL_TIM_Encoder_MspInit(TIM_HandleTypeDef* htim_encoder)
 
 }
 
+/**
+* @brief TIM_PWM MSP Initialization
+* This function configures the hardware resources used in this example
+* @param htim_pwm: TIM_PWM handle pointer
+* @retval None
+*/
+void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef* htim_pwm)
+{
+  if(htim_pwm->Instance==TIM8)
+  {
+  /* USER CODE BEGIN TIM8_MspInit 0 */
+
+  /* USER CODE END TIM8_MspInit 0 */
+    /* Peripheral clock enable */
+    __HAL_RCC_TIM8_CLK_ENABLE();
+  /* USER CODE BEGIN TIM8_MspInit 1 */
+
+  /* USER CODE END TIM8_MspInit 1 */
+
+  }
+
+}
+
 void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)
 {
   GPIO_InitTypeDef GPIO_InitStruct = {0};
@@ -291,16 +304,8 @@ void HAL_TIM_MspPostInit(TIM_HandleTypeDef* htim)
 
     __HAL_RCC_GPIOB_CLK_ENABLE();
     /**TIM8 GPIO Configuration
-    PB6     ------> TIM8_CH1
     PB8-BOOT0     ------> TIM8_CH2
     */
-    GPIO_InitStruct.Pin = GPIO_PIN_6;
-    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
-    GPIO_InitStruct.Pull = GPIO_NOPULL;
-    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
-    GPIO_InitStruct.Alternate = GPIO_AF5_TIM8;
-    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
-
     GPIO_InitStruct.Pin = GPIO_PIN_8;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
@@ -333,17 +338,6 @@ void HAL_TIM_Base_MspDeInit(TIM_HandleTypeDef* htim_base)
 
   /* USER CODE END TIM1_MspDeInit 1 */
   }
-  else if(htim_base->Instance==TIM8)
-  {
-  /* USER CODE BEGIN TIM8_MspDeInit 0 */
-
-  /* USER CODE END TIM8_MspDeInit 0 */
-    /* Peripheral clock disable */
-    __HAL_RCC_TIM8_CLK_DISABLE();
-  /* USER CODE BEGIN TIM8_MspDeInit 1 */
-
-  /* USER CODE END TIM8_MspDeInit 1 */
-  }
 
 }
 
@@ -396,6 +390,28 @@ void HAL_TIM_Encoder_MspDeInit(TIM_HandleTypeDef* htim_encoder)
 
 }
 
+/**
+* @brief TIM_PWM MSP De-Initialization
+* This function freeze the hardware resources used in this example
+* @param htim_pwm: TIM_PWM handle pointer
+* @retval None
+*/
+void HAL_TIM_PWM_MspDeInit(TIM_HandleTypeDef* htim_pwm)
+{
+  if(htim_pwm->Instance==TIM8)
+  {
+  /* USER CODE BEGIN TIM8_MspDeInit 0 */
+
+  /* USER CODE END TIM8_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_TIM8_CLK_DISABLE();
+  /* USER CODE BEGIN TIM8_MspDeInit 1 */
+
+  /* USER CODE END TIM8_MspDeInit 1 */
+  }
+
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */
diff --git a/pcb_odo.ioc b/pcb_odo.ioc
index 79a750b..603d0f4 100644
--- a/pcb_odo.ioc
+++ b/pcb_odo.ioc
@@ -11,6 +11,7 @@ CAD.formats=
 CAD.pinconfig=
 CAD.provider=
 File.Version=6
+GPIO.groupedBy=Group By Peripherals
 KeepUserPlacement=false
 Mcu.CPN=STM32G491KEU6
 Mcu.Family=STM32G4
@@ -46,8 +47,7 @@ Mcu.Pin22=PB8-BOOT0
 Mcu.Pin23=VP_SYS_VS_Systick
 Mcu.Pin24=VP_SYS_VS_DBSignals
 Mcu.Pin25=VP_TIM1_VS_ClockSourceINT
-Mcu.Pin26=VP_TIM8_VS_ClockSourceINT
-Mcu.Pin27=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
+Mcu.Pin26=VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS
 Mcu.Pin3=PA3
 Mcu.Pin4=PA4
 Mcu.Pin5=PA5
@@ -55,7 +55,7 @@ Mcu.Pin6=PA6
 Mcu.Pin7=PA7
 Mcu.Pin8=PB0
 Mcu.Pin9=PA8
-Mcu.PinsNb=28
+Mcu.PinsNb=27
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32G491KEUx
@@ -116,7 +116,7 @@ PB4.Signal=S_TIM3_CH1
 PB5.Locked=true
 PB5.Signal=EVENTOUT
 PB6.Locked=true
-PB6.Signal=S_TIM8_CH1
+PB6.Signal=GPIO_Output
 PB7.Locked=true
 PB7.Signal=I2C1_SDA
 PB8-BOOT0.Locked=true
@@ -204,8 +204,6 @@ SH.S_TIM3_CH1.0=TIM3_CH1,Encoder_Interface
 SH.S_TIM3_CH1.ConfNb=1
 SH.S_TIM3_CH2.0=TIM3_CH2,Encoder_Interface
 SH.S_TIM3_CH2.ConfNb=1
-SH.S_TIM8_CH1.0=TIM8_CH1,PWM Generation1 CH1
-SH.S_TIM8_CH1.ConfNb=1
 SH.S_TIM8_CH2.0=TIM8_CH2,PWM Generation2 CH2
 SH.S_TIM8_CH2.ConfNb=1
 TIM1.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
@@ -214,9 +212,8 @@ TIM1.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
 TIM1.IPParameters=Channel-PWM Generation1 CH1,Channel-PWM Generation2 CH2,PeriodNoDither,AutoReloadPreload
 TIM1.PeriodNoDither=630
 TIM8.AutoReloadPreload=TIM_AUTORELOAD_PRELOAD_ENABLE
-TIM8.Channel-PWM\ Generation1\ CH1=TIM_CHANNEL_1
 TIM8.Channel-PWM\ Generation2\ CH2=TIM_CHANNEL_2
-TIM8.IPParameters=Channel-PWM Generation1 CH1,Channel-PWM Generation2 CH2,PeriodNoDither,AutoReloadPreload
+TIM8.IPParameters=Channel-PWM Generation2 CH2,PeriodNoDither,AutoReloadPreload
 TIM8.PeriodNoDither=630
 USB_DEVICE.CLASS_NAME_FS=CDC
 USB_DEVICE.IPParameters=VirtualMode,VirtualModeFS,CLASS_NAME_FS
@@ -228,8 +225,6 @@ VP_SYS_VS_Systick.Mode=SysTick
 VP_SYS_VS_Systick.Signal=SYS_VS_Systick
 VP_TIM1_VS_ClockSourceINT.Mode=Internal
 VP_TIM1_VS_ClockSourceINT.Signal=TIM1_VS_ClockSourceINT
-VP_TIM8_VS_ClockSourceINT.Mode=Internal
-VP_TIM8_VS_ClockSourceINT.Signal=TIM8_VS_ClockSourceINT
 VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Mode=CDC_FS
 VP_USB_DEVICE_VS_USB_DEVICE_CDC_FS.Signal=USB_DEVICE_VS_USB_DEVICE_CDC_FS
 board=custom