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TMS320F280049C: CAN通讯配置问题

andy feng
Prodigy 20 points
Part Number: TMS320F280049C
Other Parts Discussed in Thread: C2000WARE

问题一、c2000ware/driverlib/f28004x/examples/can例程里要么发射，要么接收，只能用一个，怎么回事？
问题二、比如例程里can_ex8_mask项目，为什么CAN_setupMessageObject配置IF1通道， CAN_readMessage读又从IF2通道读？

问题三、if((HWREG_BP(CANB_BASE + CAN_O_NDAT_21))  == 0x00000001)，我发10个数才会进入读程序？