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log asc converter: support len8_dlc for Classical CAN frames

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The CANFD format in asc logfiles can be used to describe Classical CAN
frame content too. As this CANFD format has two different elements to
transport the payload length and the 'raw data length code' the new
len8_dlc option now allows to support the full qualified conversion.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
This commit is contained in:
Oliver Hartkopp
2020-11-22 19:47:24 +01:00
parent 11edd1d05e
commit 6799180bd0
2 changed files with 20 additions and 1 deletions
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asc2log.c
+9
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@@ -327,6 +327,15 @@ void eval_canfd(char* buf, struct timeval *date_tvp, char timestamps, int dplace
/* dlen is always 0 for classic CAN RTR frames
but the DLC value is valid in RTR cases */
cf.len = dlc;
/* sanitize payload length value */
if (dlc > CAN_MAX_DLEN)
cf.len = CAN_MAX_DLEN;
}
/* check for extra DLC when having a Classic CAN with 8 bytes payload */
if ((cf.len == CAN_MAX_DLEN) && (dlc > CAN_MAX_DLEN) && (dlc <= CAN_MAX_RAW_DLC)) {
struct can_frame *ccf = (struct can_frame *)&cf;
ccf->len8_dlc = dlc;
}
}