ISO15693 device side improvements (#652)

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* ISO15693 device side improvements
* increase accuracy by doubling the sample frequency (hi_read_rx_xcorr.v)
* adjust armsrc/iso15693.c and client/cmdhf15.c accordingly
* use more accurate approximation for sqrt(ci^2 + cq^2)
* improve EOF detection (was often mistaken for Logic0, resulting in "error, uneven octet! (extra bits!)")
* hi_read_r_xcorr.v: avoid overflows during accumulation and truncation
* explicitely cast unsigned ADC samples to signed

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pwpiwi 2018-08-15 14:03:20 +02:00 • committed by GitHub

parent c80eb8ba79

commit 315e18e66c

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4 changed files with 174 additions and 130 deletions

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