summaryrefslogtreecommitdiff
path: root/openpicc/application/iso14443_layer3a.h
diff options
context:
space:
mode:
Diffstat (limited to 'openpicc/application/iso14443_layer3a.h')
-rw-r--r--openpicc/application/iso14443_layer3a.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/openpicc/application/iso14443_layer3a.h b/openpicc/application/iso14443_layer3a.h
index b71c13f..495ca2e 100644
--- a/openpicc/application/iso14443_layer3a.h
+++ b/openpicc/application/iso14443_layer3a.h
@@ -17,7 +17,9 @@ enum ISO14443_STATES {
/******************** RX ************************************/
/* Magic delay, don't know where it comes from */
-#define MAGIC_DELAY -32
+#define MAGIC_OFFSET -32
+/* Delay from modulation till detection in SSC_DATA */
+#define DETECTION_DELAY 11
/* See fdt_timinig.dia for these values */
#define MAX_TF_FIQ_ENTRY_DELAY 16
#define MAX_TF_FIQ_OVERHEAD 75 /* guesstimate */
@@ -26,8 +28,8 @@ extern volatile int fdt_offset;
#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 +fdt_offset +MAGIC_DELAY)
-#define ISO14443A_FDT_SHORT_0 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_0 +fdt_offset +MAGIC_DELAY)
+#define ISO14443A_FDT_SHORT_1 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_1 +fdt_offset +MAGIC_OFFSET -DETECTION_DELAY)
+#define ISO14443A_FDT_SHORT_0 (ISO14443A_FDT_SLOTLEN*9 + ISO14443A_FDT_OFFSET_0 +fdt_offset +MAGIC_OFFSET -DETECTION_DELAY)
#ifdef FOUR_TIMES_OVERSAMPLING
/* definitions for four-times oversampling */
personal git repositories of Harald Welte. Your mileage may vary