diff options
Diffstat (limited to 'openpicc/application/iso14443_layer3a.h')
| -rw-r--r-- | openpicc/application/iso14443_layer3a.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/openpicc/application/iso14443_layer3a.h b/openpicc/application/iso14443_layer3a.h index 142128e..d398d1f 100644 --- a/openpicc/application/iso14443_layer3a.h +++ b/openpicc/application/iso14443_layer3a.h @@ -16,9 +16,11 @@ enum ISO14443_STATES { }; /******************** RX ************************************/ +/* measured TF->FIQ->SSC TX start delay (~3.480us) in carrier cycles */ +#define TF_FIQ_SSC_DELAY 47 /* standard derived magic values */ -#define ISO14443A_FDT_SHORT_1 1236 -#define ISO14443A_FDT_SHORT_0 1172 +#define ISO14443A_FDT_SHORT_1 (1236-TF_FIQ_SSC_DELAY) +#define ISO14443A_FDT_SHORT_0 (1172-TF_FIQ_SSC_DELAY) #ifdef FOUR_TIMES_OVERSAMPLING /* definitions for four-times oversampling */ |