说明：  飞思卡尔POWER PC CAN控制器驱动
(Initialize two FlexCAN modules for 100 kHz bit time based on an 8 MHz crystal. Send a message from FlexCAN A (FlexCAN 0 on MPC56xxB/P/S). The modules will be connected externally in an open drain circuit, before the transceiver. The CAN reference will be based on the crystal, not the PLL.)