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When a CAN package is received, the CAN device driver will annotate a timestamp to
the timestamp field in the canmsg_t variable and return this canmsg_t variable to the caller.
length:
The number of the data bytes which are sent or received in the 'data' field of CAN
message. This field is necessary while transmitting a Standard or Extended Data Frame.
Programmers have to explicitly set up this field. The length of data is 0~8.
For example:
canmsg_t msg;
msg.data[0] = 0xa1;
msg.data[1] = 0xb2;
msg.data[2] = 0xc3;
msg.length = 3;
data:
The byte array which holds the message data.
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Revision: 1.0
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