英文:
modify CRC field in CAN frame
问题
To generate error on CAN, I've done change data field. But It seems just change numerical things. I want to know how to modify CRC field to inject error. Can I change that field with software?.
我已经更改了CAN数据字段以生成错误，但似乎只改变了数字部分。我想知道如何修改CRC字段以注入错误。我能否使用软件更改该字段？。
I want to add some anomalies to corrupt the CRC field of the CAN message.
我想添加一些异常来损坏CAN消息的CRC字段。
I used the python can library,
我使用了Python的CAN库。
英文:
To generate error on CAN, I've done change data field. But It seems just change numerical things. I want to know how to modify CRC field to inject error. Can I change that field with software?.
I want to add some anomalies to corrupt the CRC field of the CAN message.
I used the python can library,
答案1
得分: 0
CRC由CAN控制器硬件生成，因此无法通过软件更改。
为了在CAN帧中注入错误，您将需要一个连接到CANH/CANL的TX线的微控制器，并在它们应该是隐性模式时将位拉到显性模式。
英文:
The CRC is generated by the CAN controller hardware, so you cannot change it from software.
In order to inject errors in CAN frames, you will need a microcontroller which is connected to either the TX line of CANH/CANL and pulls bits to dominant mode when they should be recessive.
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