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fix usb communications when receiving empty frame

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E.g. before this fix, iso15 (and probably others) raw commands
expecting results but with no answer from the tag where showing the
previously received commands instead of : "[!] /!\ command failed"
This commit is contained in:
Yann GASCUEL 2022-03-30 12:00:14 +02:00
commit 6bc37bb33d
1 changed files with 9 additions and 0 deletions
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9
client/src/comms.c
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@ -414,6 +414,15 @@ __attribute__((force_align_arg_pointer))
}
}
}
else if ((!error) && (length == 0)) { // we received an empty frame
if (rx.ng)
rx.length = 0; // set received length to 0
else { // old frames can't be empty
PrintAndLogEx(WARNING, "Received empty MIX packet frame (length: 0x00)");
error = true;
}
}
if (!error) { // Get the postamble
res = uart_receive(sp, (uint8_t *)&rx_raw.foopost, sizeof(PacketResponseNGPostamble), &rxlen);
if ((res != PM3_SUCCESS) || (rxlen != sizeof(PacketResponseNGPostamble))) {