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https://github.com/DarkFlippers/unleashed-firmware
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917410a0a8
* fbt: reworking targets & assets handling WIP * fbt: dist fixes * fbt: moved SD card resources to owning apps * unit_tests: moved resources to app folder * github: updated unit_tests paths * github: packaging fixes * unit_tests: fixes * fbt: assets: internal cleanup * fbt: reworked assets handling * github: unit_tests: reintroducing fixes * minor cleanup * fbt: naming changes to reflect private nature of scons tools * fbt: resources: fixed dist archive paths * docs: updated paths * docs: updated more paths * docs: included "resources" parameter in app manifest docs; updated assets readme * updated gitignore for assets * github: updated action versions * unit_tests: restored timeout; scripts: assets: logging changes * gh: don't upload desktop animations for unit test run Co-authored-by: あく <alleteam@gmail.com>
108 lines
3.9 KiB
C
108 lines
3.9 KiB
C
#include "furi_hal_nfc_i.h"
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#include "furi_hal_nfc_tech_i.h"
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static FuriHalNfcError furi_hal_nfc_iso14443b_common_init(FuriHalSpiBusHandle* handle) {
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// Common NFC-B settings, 106kbps
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// 1st stage zero = 60kHz, 3rd stage zero = 200 kHz
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st25r3916_write_reg(handle, ST25R3916_REG_RX_CONF1, ST25R3916_REG_RX_CONF1_h200);
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// Enable AGC
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// AGC Ratio 6
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// AGC algorithm with RESET (recommended for ISO14443-B)
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// AGC operation during complete receive period
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// Squelch ratio 6/3 (recommended for ISO14443-B)
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// Squelch automatic activation on TX end
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st25r3916_write_reg(
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handle,
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ST25R3916_REG_RX_CONF2,
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ST25R3916_REG_RX_CONF2_agc6_3 | ST25R3916_REG_RX_CONF2_agc_alg |
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ST25R3916_REG_RX_CONF2_agc_m | ST25R3916_REG_RX_CONF2_agc_en |
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ST25R3916_REG_RX_CONF2_pulz_61 | ST25R3916_REG_RX_CONF2_sqm_dyn);
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// HF operation, full gain on AM and PM channels
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st25r3916_write_reg(handle, ST25R3916_REG_RX_CONF3, 0x00);
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// No gain reduction on AM and PM channels
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st25r3916_write_reg(handle, ST25R3916_REG_RX_CONF4, 0x00);
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// Subcarrier end detector enabled
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// Subcarrier end detection level = 66%
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// BPSK start 33 pilot pulses
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// AM & PM summation before digitizing on
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st25r3916_write_reg(
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handle,
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ST25R3916_REG_CORR_CONF1,
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ST25R3916_REG_CORR_CONF1_corr_s0 | ST25R3916_REG_CORR_CONF1_corr_s1 |
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ST25R3916_REG_CORR_CONF1_corr_s3 | ST25R3916_REG_CORR_CONF1_corr_s4);
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// Sleep mode disable, 424kHz mode off
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st25r3916_write_reg(handle, ST25R3916_REG_CORR_CONF2, 0x00);
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return FuriHalNfcErrorNone;
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}
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static FuriHalNfcError furi_hal_nfc_iso14443b_poller_init(FuriHalSpiBusHandle* handle) {
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// Enable ISO14443B mode, AM modulation
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st25r3916_change_reg_bits(
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handle,
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ST25R3916_REG_MODE,
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ST25R3916_REG_MODE_om_mask | ST25R3916_REG_MODE_tr_am,
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ST25R3916_REG_MODE_om_iso14443b | ST25R3916_REG_MODE_tr_am_am);
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// 10% ASK modulation
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st25r3916_change_reg_bits(
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handle,
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ST25R3916_REG_TX_DRIVER,
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ST25R3916_REG_TX_DRIVER_am_mod_mask,
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ST25R3916_REG_TX_DRIVER_am_mod_10percent);
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// Use regulator AM, resistive AM disabled
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st25r3916_clear_reg_bits(
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handle,
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ST25R3916_REG_AUX_MOD,
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ST25R3916_REG_AUX_MOD_dis_reg_am | ST25R3916_REG_AUX_MOD_res_am);
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// EGT = 0 etu
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// SOF = 10 etu LOW + 2 etu HIGH
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// EOF = 10 etu
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st25r3916_change_reg_bits(
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handle,
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ST25R3916_REG_ISO14443B_1,
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ST25R3916_REG_ISO14443B_1_egt_mask | ST25R3916_REG_ISO14443B_1_sof_mask |
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ST25R3916_REG_ISO14443B_1_eof,
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(0U << ST25R3916_REG_ISO14443B_1_egt_shift) | ST25R3916_REG_ISO14443B_1_sof_0_10etu |
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ST25R3916_REG_ISO14443B_1_sof_1_2etu | ST25R3916_REG_ISO14443B_1_eof_10etu);
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// TR1 = 80 / fs
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// B' mode off (no_sof & no_eof = 0)
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st25r3916_change_reg_bits(
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handle,
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ST25R3916_REG_ISO14443B_2,
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ST25R3916_REG_ISO14443B_2_tr1_mask | ST25R3916_REG_ISO14443B_2_no_sof |
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ST25R3916_REG_ISO14443B_2_no_eof,
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ST25R3916_REG_ISO14443B_2_tr1_80fs80fs);
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return furi_hal_nfc_iso14443b_common_init(handle);
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}
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static FuriHalNfcError furi_hal_nfc_iso14443b_poller_deinit(FuriHalSpiBusHandle* handle) {
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UNUSED(handle);
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return FuriHalNfcErrorNone;
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}
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const FuriHalNfcTechBase furi_hal_nfc_iso14443b = {
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.poller =
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{
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.compensation =
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{
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.fdt = FURI_HAL_NFC_POLLER_FDT_COMP_FC,
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.fwt = FURI_HAL_NFC_POLLER_FWT_COMP_FC,
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},
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.init = furi_hal_nfc_iso14443b_poller_init,
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.deinit = furi_hal_nfc_iso14443b_poller_deinit,
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.wait_event = furi_hal_nfc_wait_event_common,
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.tx = furi_hal_nfc_poller_tx_common,
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.rx = furi_hal_nfc_common_fifo_rx,
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},
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.listener = {},
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};
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