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#include <furi.h>
#include <furi_hal.h>
#include <applications/storage/storage.h>
#include <lib/flipper_format/flipper_format.h>
#include <lib/nfc/protocols/nfca.h>
#include <lib/digital_signal/digital_signal.h>
#include <lib/flipper_format/flipper_format_i.h>
#include <lib/toolbox/stream/file_stream.h>
#include "../minunit.h"
#define TAG "NfcTest"
#define NFC_TEST_RESOURCES_DIR EXT_PATH("unit_tests/nfc/")
#define NFC_TEST_SIGNAL_SHORT_FILE "nfc_nfca_signal_short.nfc"
#define NFC_TEST_SIGNAL_LONG_FILE "nfc_nfca_signal_long.nfc"
static const char* nfc_test_file_type = "Flipper NFC test";
static const uint32_t nfc_test_file_version = 1;
#define NFC_TEST_DATA_MAX_LEN 18
#define NFC_TETS_TIMINGS_MAX_LEN 1350
typedef struct {
Storage* storage;
NfcaSignal* signal;
uint32_t test_data_len;
uint8_t test_data[NFC_TEST_DATA_MAX_LEN];
uint32_t test_timings_len;
uint32_t test_timings[NFC_TETS_TIMINGS_MAX_LEN];
} NfcTest;
static NfcTest* nfc_test = NULL;
static void nfc_test_alloc() {
nfc_test = malloc(sizeof(NfcTest));
nfc_test->signal = nfca_signal_alloc();
nfc_test->storage = furi_record_open(RECORD_STORAGE);
}
static void nfc_test_free() {
furi_assert(nfc_test);
furi_record_close(RECORD_STORAGE);
nfca_signal_free(nfc_test->signal);
free(nfc_test);
nfc_test = NULL;
}
static bool nfc_test_read_signal_from_file(const char* file_name) {
bool success = false;
FlipperFormat* file = flipper_format_file_alloc(nfc_test->storage);
string_t file_type;
string_init(file_type);
uint32_t file_version = 0;
do {
if(!flipper_format_file_open_existing(file, file_name)) break;
if(!flipper_format_read_header(file, file_type, &file_version)) break;
if(string_cmp_str(file_type, nfc_test_file_type) || file_version != nfc_test_file_version)
break;
if(!flipper_format_read_uint32(file, "Data length", &nfc_test->test_data_len, 1)) break;
if(nfc_test->test_data_len > NFC_TEST_DATA_MAX_LEN) break;
if(!flipper_format_read_hex(
file, "Plain data", nfc_test->test_data, nfc_test->test_data_len))
break;
if(!flipper_format_read_uint32(file, "Timings length", &nfc_test->test_timings_len, 1))
break;
if(nfc_test->test_timings_len > NFC_TETS_TIMINGS_MAX_LEN) break;
if(!flipper_format_read_uint32(
file, "Timings", nfc_test->test_timings, nfc_test->test_timings_len))
break;
success = true;
} while(false);
string_clear(file_type);
flipper_format_free(file);
return success;
}
static bool nfc_test_digital_signal_test_encode(
const char* file_name,
uint32_t encode_max_time,
uint32_t timing_tolerance,
uint32_t timings_sum_tolerance) {
furi_assert(nfc_test);
bool success = false;
uint32_t time = 0;
uint32_t dut_timings_sum = 0;
uint32_t ref_timings_sum = 0;
uint8_t parity[10] = {};
do {
// Read test data
if(!nfc_test_read_signal_from_file(file_name)) break;
// Encode signal
FURI_CRITICAL_ENTER();
time = DWT->CYCCNT;
nfca_signal_encode(
nfc_test->signal, nfc_test->test_data, nfc_test->test_data_len * 8, parity);
digital_signal_prepare_arr(nfc_test->signal->tx_signal);
time = (DWT->CYCCNT - time) / furi_hal_cortex_instructions_per_microsecond();
FURI_CRITICAL_EXIT();
// Check timings
if(time > encode_max_time) {
FURI_LOG_E(
TAG, "Encoding time: %d us while accepted value: %d us", time, encode_max_time);
break;
}
// Check data
if(nfc_test->signal->tx_signal->edge_cnt != nfc_test->test_timings_len) {
FURI_LOG_E(TAG, "Not equal timings buffers length");
break;
}
uint32_t timings_diff = 0;
uint32_t* ref = nfc_test->test_timings;
uint32_t* dut = nfc_test->signal->tx_signal->reload_reg_buff;
bool timing_check_success = true;
for(size_t i = 0; i < nfc_test->test_timings_len; i++) {
timings_diff = dut[i] > ref[i] ? dut[i] - ref[i] : ref[i] - dut[i];
dut_timings_sum += dut[i];
ref_timings_sum += ref[i];
if(timings_diff > timing_tolerance) {
FURI_LOG_E(
TAG, "Too big differece in %d timings. Ref: %d, DUT: %d", i, ref[i], dut[i]);
timing_check_success = false;
break;
}
}
if(!timing_check_success) break;
uint32_t sum_diff = dut_timings_sum > ref_timings_sum ? dut_timings_sum - ref_timings_sum :
ref_timings_sum - dut_timings_sum;
if(sum_diff > timings_sum_tolerance) {
FURI_LOG_E(
TAG,
"Too big difference in timings sum. Ref: %d, DUT: %d",
ref_timings_sum,
dut_timings_sum);
break;
}
FURI_LOG_I(TAG, "Encoding time: %d us. Acceptable time: %d us", time, encode_max_time);
FURI_LOG_I(
TAG,
"Timings sum difference: %d [1/64MHZ]. Acceptable difference: %d [1/64MHz]",
sum_diff,
timings_sum_tolerance);
success = true;
} while(false);
return success;
}
MU_TEST(nfc_digital_signal_test) {
mu_assert(
nfc_test_digital_signal_test_encode(
NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_SHORT_FILE, 500, 1, 37),
"NFC short digital signal test failed\r\n");
mu_assert(
nfc_test_digital_signal_test_encode(
NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_LONG_FILE, 2000, 1, 37),
"NFC long digital signal test failed\r\n");
}
MU_TEST_SUITE(nfc) {
nfc_test_alloc();
MU_RUN_TEST(nfc_digital_signal_test);
nfc_test_free();
}
int run_minunit_test_nfc() {
MU_RUN_SUITE(nfc);
return MU_EXIT_CODE;
}
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