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ecx_receive_processdata_group: return EC_NOFRAME when no frames are received

pull/13/head
Jimmy Assarsson 2015-10-15 10:23:11 +02:00
parent 34670ceb90
commit eab964ca82
1 changed files with 8 additions and 0 deletions
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8
soem/ethercatmain.c
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@ -1798,6 +1798,7 @@ int ecx_receive_processdata_group(ecx_contextt *context, uint8 group, int timeou
int pos, idx;
int wkc = 0, wkc2;
uint16 le_wkc = 0;
int valid_wkc = 0;
int64 le_DCtime;
boolean first = FALSE;
@ -1832,6 +1833,7 @@ int ecx_receive_processdata_group(ecx_contextt *context, uint8 group, int timeou
memcpy(context->idxstack->data[pos], &(context->port->rxbuf[idx][EC_HEADERSIZE]), context->idxstack->length[pos]);
wkc += wkc2;
}
valid_wkc = 1;
}
else if(context->port->rxbuf[idx][EC_CMDOFFSET]==EC_CMD_LWR)
{
@ -1849,6 +1851,7 @@ int ecx_receive_processdata_group(ecx_contextt *context, uint8 group, int timeou
/* output WKC counts 2 times when using LRW, emulate the same for LWR */
wkc += wkc2 * 2;
}
valid_wkc = 1;
}
}
/* release buffer */
@ -1857,6 +1860,11 @@ int ecx_receive_processdata_group(ecx_contextt *context, uint8 group, int timeou
pos = ecx_pullindex(context);
}
/* if no frames has arrived */
if (valid_wkc == 0)
{
return EC_NOFRAME;
}
return wkc;
}