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when emulating ISO15693, check for the correct address when addressed mode was selected

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g3gg0 2020-04-13 22:09:34 +02:00
commit 31e4c66f00
1 changed files with 19 additions and 2 deletions
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21
armsrc/iso15693.c
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@ -2375,6 +2375,15 @@ void Iso15693InitTag(void) {
StartCountSspClk();
}
bool RevUidMatch(uint8_t *uid, uint8_t *pkt) {
for(int pos = 0; pos < 8; pos++) {
if(uid[pos] != pkt[7-pos]) {
return false;
}
}
return true;
}
// Simulate an ISO15693 TAG.
// For Inventory command: print command and send Inventory Response with given UID
// TODO: interpret other reader commands and send appropriate response
@ -2442,12 +2451,20 @@ void SimTagIso15693(uint32_t parameter, uint8_t *uid) {
}
uint8_t flags = cmd[0];
bool slow = !(flags & ISO15693_REQ_DATARATE_HIGH);
bool addressed = (flags & ISO15693_REQ_ADDRESS);
uint8_t command = cmd[1];
bool slow = !(flags & ISO15693_REQ_DATARATE_HIGH);
bool addressed = !(flags & ISO15693_REQ_INVENTORY) && (flags & ISO15693_REQ_ADDRESS);
/* when commands above 0xA0 are sent, its most likely a manufacturer code. for SLIX-L it contains an extra byte 0x04 right after the command */
bool advanced = addressed && (command >= 0xA0);
uint8_t *address = &cmd[2 + (advanced?1:0)];
start_time = eof_time + DELAY_ISO15693_VCD_TO_VICC_SIM;
if(addressed && !RevUidMatch(address, uid)) {
Dbprintf("(addressed packet, but not for us)");
continue;
}
if(debug || passive) {
Dbprintf("%d bytes read from reader:", cmd_len);
Dbhexdump(cmd_len, cmd, false);