title: Is there a CAN bus library for STM32 to direct connect with a CAN transceiver?
body: <p>Many STM32 chipsets support 1 or 2 channel CAN PIN Outs. 
  Is there a CAN bus library for STM32 to direct connect with a CAN transceiver such as MCP2551? But it does not matter what the CAN transceiver is. </p>