Data transmission method and data transmission device for bus

Data transmission method and data transmission device for bus

  • CN 106,788,916 B
  • Filed: 12/30/2016
  • Issued: 08/27/2021
  • Est. Priority Date: 12/30/2016
  • Status: Active Grant
First Claim
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1. A method of data transfer for a bus, comprising:

  • sequentially sending 1 st to N-1 th data frames to a receiving end, wherein N is a positive integer;

    after repeatedly sending the Nth data frame to the receiving end, receiving data transmission abnormal information from the receiving end, wherein the data transmission abnormal information comprises the number of the data frames with abnormal transmission in the 1 st to the N data frames and the sequence number of the data frames with abnormal transmission, and the number of the data frames and the sequence number of the data frames with abnormal transmission are carried by a data field of a modified CAN2.0B bus protocol standard data frame and a field of an arbitration field identifier field in an expanded data frame;

    and if the number of the data frames with abnormal transmission is not 0, retransmitting the data frames corresponding to the sequence numbers of the data frames with abnormal transmission to the receiving end.

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