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        /* Skapa ID och DATA */
        uint8_t TxData[8];
        uint32_t ID = .....
        
        /* Skriv meddelande */
	CAN_TxHeaderTypeDef TxHeader;
	TxHeader.DLC = 8;											/* Here we are only sending 8 bytes */
	TxHeader.RTR = CAN_RTR_DATA;								/* Data frame */
	TxHeader.IDE = CAN_ID_EXT;									/* We want to send an extended ID */
	TxHeader.TransmitGlobalTime = DISABLE;
	TxHeader.ExtId = ID;
	TxHeader.StdId = 0x00; 										/* Not used */
         uint32_t TxMailbox;
	HAL_CAN_AddTxMessage(can_handler, TxHeader, TxData, &TxMailbox);

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/**
  * @brief  CAN Tx message header structure definition
  */
typedef struct
{
  uint32_t StdId;    /*!< Specifies the standard identifier.
                          This parameter must be a number between Min_Data = 0 and Max_Data = 0x7FF. */

  uint32_t ExtId;    /*!< Specifies the extended identifier.
                          This parameter must be a number between Min_Data = 0 and Max_Data = 0x1FFFFFFF. */

  uint32_t IDE;      /*!< Specifies the type of identifier for the message that will be transmitted.
                          This parameter can be a value of @ref CAN_identifier_type */

  uint32_t RTR;      /*!< Specifies the type of frame for the message that will be transmitted.
                          This parameter can be a value of @ref CAN_remote_transmission_request */

  uint32_t DLC;      /*!< Specifies the length of the frame that will be transmitted.
                          This parameter must be a number between Min_Data = 0 and Max_Data = 8. */

  FunctionalState TransmitGlobalTime; /*!< Specifies whether the timestamp counter value captured on start
                          of frame transmission, is sent in DATA6 and DATA7 replacing pData[6] and pData[7].
                          @note: Time Triggered Communication Mode must be enabled.
                          @note: DLC must be programmed as 8 bytes, in order these 2 bytes are sent.
                          This parameter can be set to ENABLE or DISABLE. */

} CAN_TxHeaderTypeDef;

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	CAN_TxHeaderTypeDef TxHeader;
	TxHeader.DLC = 3;											/* Here we are only sending 3 bytes */
	TxHeader.RTR = CAN_RTR_DATA;								/* Data frame */
	TxHeader.IDE = CAN_ID_EXT;									/* We want to send an extended ID */
	TxHeader.TransmitGlobalTime = DISABLE;
	TxHeader.ExtId = ID;
	TxHeader.StdId = 0x00; 										/* Not used */

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HAL_CAN_AddTxMessage(&hcan, TxHeader, TxData, &TxMailbox);