289 lines
9.3 KiB
C
289 lines
9.3 KiB
C
#include "princeton_for_testing.h"
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#include "furi_hal.h"
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#include "../blocks/math.h"
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/*
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* Help
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* https://phreakerclub.com/447
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*
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*/
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#define SUBGHZ_PT_SHORT 300
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#define SUBGHZ_PT_LONG (SUBGHZ_PT_SHORT * 3)
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#define SUBGHZ_PT_GUARD (SUBGHZ_PT_SHORT * 30)
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#define SUBGHZ_PT_COUNT_KEY_433 9
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#define SUBGHZ_PT_TIMEOUT_433 900
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#define SUBGHZ_PT_COUNT_KEY_868 9
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#define SUBGHZ_PT_TIMEOUT_868 14000
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#define TAG "SubGhzProtocolPrinceton"
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struct SubGhzEncoderPrinceton {
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uint32_t key;
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uint16_t te;
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size_t repeat;
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size_t front;
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size_t count_key;
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size_t count_key_package;
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uint32_t time_high;
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uint32_t time_low;
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uint32_t timeout;
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uint32_t time_stop;
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};
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typedef enum {
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PrincetonDecoderStepReset = 0,
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PrincetonDecoderStepSaveDuration,
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PrincetonDecoderStepCheckDuration,
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} PrincetonDecoderStep;
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SubGhzEncoderPrinceton* subghz_encoder_princeton_for_testing_alloc() {
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SubGhzEncoderPrinceton* instance = malloc(sizeof(SubGhzEncoderPrinceton));
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return instance;
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}
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void subghz_encoder_princeton_for_testing_free(SubGhzEncoderPrinceton* instance) {
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furi_assert(instance);
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free(instance);
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}
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void subghz_encoder_princeton_for_testing_stop(
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SubGhzEncoderPrinceton* instance,
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uint32_t time_stop) {
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instance->time_stop = time_stop;
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}
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void subghz_encoder_princeton_for_testing_set(
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SubGhzEncoderPrinceton* instance,
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uint32_t key,
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size_t repeat,
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uint32_t frequency) {
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furi_assert(instance);
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instance->te = SUBGHZ_PT_SHORT;
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instance->key = key;
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instance->repeat = repeat + 1;
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instance->front = 48;
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instance->time_high = 0;
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instance->time_low = 0;
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if(frequency < 700000000) {
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instance->count_key_package = SUBGHZ_PT_COUNT_KEY_433;
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instance->timeout = SUBGHZ_PT_TIMEOUT_433;
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} else {
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instance->count_key_package = SUBGHZ_PT_COUNT_KEY_868;
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instance->timeout = SUBGHZ_PT_TIMEOUT_868;
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}
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instance->count_key = instance->count_key_package + 3;
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if((furi_get_tick() - instance->time_stop) < instance->timeout) {
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instance->time_stop = (instance->timeout - (furi_get_tick() - instance->time_stop)) * 1000;
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} else {
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instance->time_stop = 0;
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}
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}
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size_t subghz_encoder_princeton_for_testing_get_repeat_left(SubGhzEncoderPrinceton* instance) {
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furi_assert(instance);
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return instance->repeat;
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}
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void subghz_encoder_princeton_for_testing_print_log(void* context) {
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SubGhzEncoderPrinceton* instance = context;
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float duty_cycle =
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((float)instance->time_high / (instance->time_high + instance->time_low)) * 100;
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FURI_LOG_I(
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TAG "Encoder",
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"Radio tx_time=%luus ON=%luus, OFF=%luus, DutyCycle=%lu,%lu%%",
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instance->time_high + instance->time_low,
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instance->time_high,
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instance->time_low,
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(uint32_t)duty_cycle,
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(uint32_t)((duty_cycle - (uint32_t)duty_cycle) * 100UL));
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}
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LevelDuration subghz_encoder_princeton_for_testing_yield(void* context) {
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SubGhzEncoderPrinceton* instance = context;
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if(instance->repeat == 0) {
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subghz_encoder_princeton_for_testing_print_log(instance);
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return level_duration_reset();
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}
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size_t bit = instance->front / 2;
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bool level = !(instance->front % 2);
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LevelDuration ret;
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if(bit < 24) {
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uint8_t byte = bit / 8;
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uint8_t bit_in_byte = bit % 8;
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bool value = (((uint8_t*)&instance->key)[2 - byte] >> (7 - bit_in_byte)) & 1;
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if(value) {
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ret = level_duration_make(level, level ? instance->te * 3 : instance->te);
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if(level)
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instance->time_high += instance->te * 3;
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else
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instance->time_low += instance->te;
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} else {
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ret = level_duration_make(level, level ? instance->te : instance->te * 3);
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if(level)
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instance->time_high += instance->te;
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else
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instance->time_low += instance->te * 3;
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}
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} else {
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if(instance->time_stop) {
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ret = level_duration_make(level, level ? instance->te : instance->time_stop);
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if(level)
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instance->time_high += instance->te;
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else {
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instance->time_low += instance->time_stop;
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instance->time_stop = 0;
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instance->front = 47;
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}
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} else {
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if(--instance->count_key != 0) {
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ret = level_duration_make(level, level ? instance->te : instance->te * 30);
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if(level)
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instance->time_high += instance->te;
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else
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instance->time_low += instance->te * 30;
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} else {
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instance->count_key = instance->count_key_package + 2;
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instance->front = 48;
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ret = level_duration_make(level, level ? instance->te : instance->timeout * 1000);
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if(level)
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instance->time_high += instance->te;
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else
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instance->time_low += instance->timeout * 1000;
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}
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}
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}
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instance->front++;
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if(instance->front == 50) {
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instance->repeat--;
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instance->front = 0;
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}
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return ret;
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}
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struct SubGhzDecoderPrinceton {
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const char* name;
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uint16_t te_long;
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uint16_t te_short;
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uint16_t te_delta;
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uint8_t code_count_bit;
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uint8_t code_last_count_bit;
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uint64_t code_found;
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uint64_t code_last_found;
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uint8_t code_min_count_bit_for_found;
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uint8_t btn;
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uint32_t te_last;
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uint32_t serial;
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uint32_t parser_step;
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uint16_t cnt;
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uint32_t te;
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SubGhzDecoderPrincetonCallback callback;
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void* context;
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};
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SubGhzDecoderPrinceton* subghz_decoder_princeton_for_testing_alloc(void) {
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SubGhzDecoderPrinceton* instance = malloc(sizeof(SubGhzDecoderPrinceton));
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instance->te = SUBGHZ_PT_SHORT;
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instance->name = "Princeton";
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instance->code_min_count_bit_for_found = 24;
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instance->te_short = 400;
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instance->te_long = 1200;
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instance->te_delta = 250;
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return instance;
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}
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void subghz_decoder_princeton_for_testing_free(SubGhzDecoderPrinceton* instance) {
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furi_assert(instance);
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free(instance);
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}
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void subghz_decoder_princeton_for_testing_set_callback(
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SubGhzDecoderPrinceton* instance,
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SubGhzDecoderPrincetonCallback callback,
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void* context) {
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instance->callback = callback;
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instance->context = context;
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}
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void subghz_decoder_princeton_for_testing_reset(SubGhzDecoderPrinceton* instance) {
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instance->parser_step = PrincetonDecoderStepReset;
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}
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static void
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subghz_decoder_princeton_for_testing_add_bit(SubGhzDecoderPrinceton* instance, uint8_t bit) {
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instance->code_found = instance->code_found << 1 | bit;
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instance->code_count_bit++;
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}
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void subghz_decoder_princeton_for_testing_parse(
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SubGhzDecoderPrinceton* instance,
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bool level,
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uint32_t duration) {
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switch(instance->parser_step) {
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case PrincetonDecoderStepReset:
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if((!level) &&
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(DURATION_DIFF(duration, instance->te_short * 36) < instance->te_delta * 36)) {
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//Found Preambula
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instance->parser_step = PrincetonDecoderStepSaveDuration;
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instance->code_found = 0;
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instance->code_count_bit = 0;
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instance->te = 0;
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}
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break;
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case PrincetonDecoderStepSaveDuration:
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//save duration
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if(level) {
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instance->te_last = duration;
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instance->te += duration;
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instance->parser_step = PrincetonDecoderStepCheckDuration;
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}
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break;
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case PrincetonDecoderStepCheckDuration:
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if(!level) {
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if(duration >= ((uint32_t)instance->te_short * 10 + instance->te_delta)) {
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instance->parser_step = PrincetonDecoderStepSaveDuration;
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if(instance->code_count_bit == instance->code_min_count_bit_for_found) {
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instance->te /= (instance->code_count_bit * 4 + 1);
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instance->code_last_found = instance->code_found;
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instance->code_last_count_bit = instance->code_count_bit;
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instance->serial = instance->code_found >> 4;
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instance->btn = (uint8_t)instance->code_found & 0x00000F;
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if(instance->callback) instance->callback(instance, instance->context);
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}
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instance->code_found = 0;
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instance->code_count_bit = 0;
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instance->te = 0;
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break;
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}
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instance->te += duration;
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if((DURATION_DIFF(instance->te_last, instance->te_short) < instance->te_delta) &&
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(DURATION_DIFF(duration, instance->te_long) < instance->te_delta * 3)) {
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subghz_decoder_princeton_for_testing_add_bit(instance, 0);
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instance->parser_step = PrincetonDecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(instance->te_last, instance->te_long) < instance->te_delta * 3) &&
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(DURATION_DIFF(duration, instance->te_short) < instance->te_delta)) {
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subghz_decoder_princeton_for_testing_add_bit(instance, 1);
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instance->parser_step = PrincetonDecoderStepSaveDuration;
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} else {
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instance->parser_step = PrincetonDecoderStepReset;
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}
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} else {
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instance->parser_step = PrincetonDecoderStepReset;
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}
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break;
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}
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}
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