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corrected invalid frame handling for mstpcap scan feature

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This commit is contained in:
skarg
2013-12-02 16:24:24 +00:00
parent b8267024d7
commit 31b8373520
1 changed files with 8 additions and 5 deletions
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bacnet-stack/demo/mstpcap/main.c
+8 -5
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@@ -759,6 +759,7 @@ static bool read_received_packet(
if (mstp_port->HeaderCRC != 0x55) {
mstp_port->ReceivedInvalidFrame = true;
} else if (mstp_port->DataLength == 0) {
mstp_port->ReceivedInvalidFrame = false;
mstp_port->ReceivedValidFrame = true;
mstp_port->ReceivedValidFrameNotForUs = true;
}
@@ -794,16 +795,18 @@ static bool read_received_packet(
CRC_Calc_Data(mstp_port->DataCRCActualMSB, mstp_port->DataCRC);
mstp_port->DataCRC =
CRC_Calc_Data(mstp_port->DataCRCActualLSB, mstp_port->DataCRC);
if (mstp_port->DataCRC == 0xF0B8) {
mstp_port->ReceivedValidFrame = true;
mstp_port->ReceivedValidFrameNotForUs = true;
} else {
if (mstp_port->DataCRC != 0xF0B8) {
mstp_port->ReceivedInvalidFrame = true;
}
} else {
mstp_port->DataLength = 0;
}
packet_statistics(&tv, mstp_port);
if (mstp_port->ReceivedInvalidFrame) {
Invalid_Frame_Count++;
} else if ((mstp_port->ReceivedValidFrame) ||
(mstp_port->ReceivedValidFrameNotForUs)) {
packet_statistics(&tv, mstp_port);
}
} else {
return false;
}