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NFC emulation software tunning (#1341)

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* digital_signal: optimize calculationxx
* firmware: add listen start and listen rx
* digital signal: rework with fixed point calculation
* nfc: tune timings
* nfc: fix array overflow
* mifare classic: fix key access
* nfc: rework spi bus access
* nfc: rework listen mode with st25r3916 calls
* digital signal: speed up digital_signal_append()
* digital signal: remove unused profiling
* nfc: clean up code
* nfc: correct sleep state
* nfc: add unit tests
* nfc: fix memory leak in unit test
* digital_signal: remove unused code
* nfc: fix incorrect sak load in pt memory

Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
gornekich
2022-07-03 17:51:50 +03:00
committed by GitHub
parent 1975868ed8
commit 5769595e67
14 changed files with 496 additions and 61 deletions
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13
lib/nfc_protocols/nfca.c
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@@ -8,7 +8,10 @@
#define NFCA_CRC_INIT (0x6363)
#define NFCA_F_SIG (13560000.0)
#define NFCA_T_SIG (1.0 / NFCA_F_SIG)
#define T_SIG 7374 //73.746ns*100
#define T_SIG_x8 58992 //T_SIG*8
#define T_SIG_x8_x8 471936 //T_SIG*8*8
#define T_SIG_x8_x9 530928 //T_SIG*8*9
#define NFCA_SIGNAL_MAX_EDGES (1350)
@@ -64,15 +67,15 @@ static void nfca_add_bit(DigitalSignal* signal, bool bit) {
if(bit) {
signal->start_level = true;
for(size_t i = 0; i < 7; i++) {
signal->edge_timings[i] = 8 * NFCA_T_SIG;
signal->edge_timings[i] = T_SIG_x8;
}
signal->edge_timings[7] = 9 * 8 * NFCA_T_SIG;
signal->edge_timings[7] = T_SIG_x8_x9;
signal->edge_cnt = 8;
} else {
signal->start_level = false;
signal->edge_timings[0] = 8 * 8 * NFCA_T_SIG;
signal->edge_timings[0] = T_SIG_x8_x8;
for(size_t i = 1; i < 9; i++) {
signal->edge_timings[i] = 8 * NFCA_T_SIG;
signal->edge_timings[i] = T_SIG_x8;
}
signal->edge_cnt = 9;
}