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scale NfcV frequency a bit, add echo mode, fix signal level at the end

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This commit is contained in:
g3gg0.de
2023-02-04 01:43:04 +01:00
committed by Tiernan Messmer
parent af7d21a020
commit 1d4ce4e78a
2 changed files with 100 additions and 27 deletions
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9
lib/nfc/protocols/nfcv.h
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@@ -12,7 +12,7 @@
extern "C" {
#endif
#define NFCV_FC (13560000.0f) /* MHz */
#define NFCV_FC (13560000.0f / 0.9998f) /* MHz */
#define NFCV_RESP_SUBC1_PULSE_32 (1.0f / (NFCV_FC / 32) / 2.0f) /* 1.1799 µs */
#define NFCV_RESP_SUBC1_UNMOD_256 (256.0f / NFCV_FC) /* 18.8791 µs */
@@ -37,7 +37,7 @@ extern "C" {
/* helpers to calculate the send time based on DWT->CYCCNT */
#define NFCV_FDT_USEC(usec) (usec * 64)
#define NFCV_FDT_FC(ticks) (ticks * 6400 / 1356)
#define NFCV_FDT_FC(ticks) ((ticks)*6400 / 1356)
#define NFCV_FRAME_STATE_SOF1 0
#define NFCV_FRAME_STATE_SOF2 1
@@ -73,6 +73,9 @@ extern "C" {
#define ISO15693_GET_SYSTEM_INFO 0x2B
#define ISO15693_READ_MULTI_SECSTATUS 0x2C
#define ISO15693_CUST_ECHO_MODE 0xDE
#define ISO15693_CUST_ECHO_DATA 0xDF
/* ISO15693 RESPONSE ERROR CODES */
#define ISO15693_NOERROR 0x00
#define ISO15693_ERROR_CMD_NOT_SUP 0x01 // Command not supported
@@ -139,6 +142,7 @@ typedef struct {
typedef struct {
PulseReader* reader_signal;
DigitalSignal* nfcv_resp_pulse; /* pulse length, fc/32 */
DigitalSignal* nfcv_resp_half_pulse; /* half pulse length, fc/32 */
DigitalSignal* nfcv_resp_unmod; /* unmodulated length 256/fc */
NfcVEmuAirSignals signals_high;
NfcVEmuAirSignals signals_low;
@@ -185,6 +189,7 @@ typedef struct {
bool modified;
bool ready;
bool echo_mode;
/* specfic variant infos */
NfcVSubtype sub_type;