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Abort when Manchester goes wrong rather than outputting wrong values

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Philippe Teuwen 2020-01-16 00:07:54 +01:00
commit d2fb44710f
1 changed files with 4 additions and 0 deletions
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4
armsrc/hitag2.c
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@ -1538,6 +1538,10 @@ void ReaderHitag(hitag_function htf, hitag_data *htd) {
// Pack the response into a byte array
for (size_t i = 5; i < nrzs; i++) {
uint8_t bit = nrz_samples[i];
if (bit > 1) { // When Manchester detects impossible symbol it writes "7"
//Dbprintf("Error in Manchester decoding, abort");
break;
}
rx[rxlen / 8] |= bit << (7 - (rxlen % 8));
rxlen++;
}