[参考译文] TMS570LS1227：在重新配置 DCAN 消息对象时使用 MsgVal 位

void canUpdateID(canBASE_t *node, uint32 messageBox, uint32 msgBoxArbitVal)
{

    /** - Wait until IF2 is ready for use */
    while ((node->IF2STAT & 0x80U) ==0x80U)
    {
    } /* Wait */

	/** - Configure IF2 for
	*     - Message direction - Read
	*     - Data Read
	*     - Clears NewDat bit in the message object.
	*/
	node->IF2CMD = 0xA0U;
	/* Copy passed value into the arbitration register. */
	node->IF2ARB &= 0x80000000U;
	node->IF2ARB |= (msgBoxArbitVal & 0x7FFFFFFFU);

    /** - Update message box number. */
    /*SAFETYMCUSW 93 S MR: 6.1,6.2,10.1,10.2,10.3,10.4 <APPROVED> "LDRA Tool issue" */
    node->IF2NO = (uint8) messageBox;

    /** - Wait until data are copied into IF2 */
    while ((node->IF2STAT & 0x80U) ==0x80U)
    {
    } /* Wait */

}