diff options
| author | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2007-12-11 18:48:39 +0000 |
|---|---|---|
| committer | henryk <henryk@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2007-12-11 18:48:39 +0000 |
| commit | d88d1207732a80156b5d2725b4c22869ef0b3d36 (patch) | |
| tree | a0dceb6733080b96640398b0d72150606ec2985c /openpicc/application/iso14443_layer3a.h | |
| parent | 8c1bae59f57cd2cffe13234aee94c2b7aa08e8dd (diff) | |
Several modifications to enable spinning until the correct phase is reached in tc_fdt (thereby taking the phase information from tc_fdt, resetting the phase in tc_cdiv)
Still too much jitter (some bug in this code?)
git-svn-id: https://svn.openpcd.org:2342/trunk@383 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'openpicc/application/iso14443_layer3a.h')
| -rw-r--r-- | openpicc/application/iso14443_layer3a.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/openpicc/application/iso14443_layer3a.h b/openpicc/application/iso14443_layer3a.h index 0c2a909..b71c13f 100644 --- a/openpicc/application/iso14443_layer3a.h +++ b/openpicc/application/iso14443_layer3a.h @@ -16,17 +16,18 @@ 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 +/* Magic delay, don't know where it comes from */ +#define MAGIC_DELAY -32 +/* See fdt_timinig.dia for these values */ +#define MAX_TF_FIQ_ENTRY_DELAY 16 +#define MAX_TF_FIQ_OVERHEAD 75 /* guesstimate */ extern volatile int fdt_offset; /* standard derived magic values */ #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) +#define ISO14443A_FDT_SHORT_1 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_1 +fdt_offset +MAGIC_DELAY) +#define ISO14443A_FDT_SHORT_0 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_0 +fdt_offset +MAGIC_DELAY) #ifdef FOUR_TIMES_OVERSAMPLING /* definitions for four-times oversampling */ |