diff options
Diffstat (limited to 'openpicc/application/iso14443_layer3a.h')
| -rw-r--r-- | openpicc/application/iso14443_layer3a.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/openpicc/application/iso14443_layer3a.h b/openpicc/application/iso14443_layer3a.h index d398d1f..2b39d4e 100644 --- a/openpicc/application/iso14443_layer3a.h +++ b/openpicc/application/iso14443_layer3a.h @@ -18,9 +18,15 @@ enum ISO14443_STATES { /******************** RX ************************************/ /* measured TF->FIQ->SSC TX start delay (~3.480us) in carrier cycles */ #define TF_FIQ_SSC_DELAY 47 +//#define TF_FIQ_SSC_DELAY 40 +#define FALLING_EDGE_DETECTION_DELAY 12 +extern volatile int fdt_offset; /* standard derived magic values */ -#define ISO14443A_FDT_SHORT_1 (1236-TF_FIQ_SSC_DELAY) -#define ISO14443A_FDT_SHORT_0 (1172-TF_FIQ_SSC_DELAY) +#define ISO14443A_FDT_SLOTLEN 128 +#define ISO14443A_FDT_OFFSET_1 84 +#define ISO14443A_FDT_OFFSET_0 20 +#define ISO14443A_FDT_SHORT_1 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_1 -FALLING_EDGE_DETECTION_DELAY +fdt_offset -TF_FIQ_SSC_DELAY) +#define ISO14443A_FDT_SHORT_0 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_0 -FALLING_EDGE_DETECTION_DELAY +fdt_offset -TF_FIQ_SSC_DELAY) #ifdef FOUR_TIMES_OVERSAMPLING /* definitions for four-times oversampling */ |