flipperzero-firmware/lib/fl_subghz/protocols/subghz_protocol_came.c

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#include "subghz_protocol_came.h"
#include "subghz_protocol_common.h"
/*
* Help
* https://phreakerclub.com/447
*
*/
struct SubGhzProtocolCame {
SubGhzProtocolCommon common;
};
SubGhzProtocolCame* subghz_protocol_came_alloc() {
SubGhzProtocolCame* instance = furi_alloc(sizeof(SubGhzProtocolCame));
instance->common.name = "Came";
instance->common.code_min_count_bit_for_found = 12;
instance->common.te_shot = 320;
instance->common.te_long = 640;
instance->common.te_delta = 150;
return instance;
}
void subghz_protocol_came_free(SubGhzProtocolCame* instance) {
furi_assert(instance);
free(instance);
}
/** Send bit
*
* @param instance - SubGhzProtocolCame instance
* @param bit - bit
*/
void subghz_protocol_came_send_bit(SubGhzProtocolCame* instance, uint8_t bit) {
if (bit) {
//send bit 1
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_long);
SUBGHZ_TX_PIN_HIGTH();
delay_us(instance->common.te_shot);
} else {
//send bit 0
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_shot);
SUBGHZ_TX_PIN_HIGTH();
delay_us(instance->common.te_long);
}
}
void subghz_protocol_came_send_key(SubGhzProtocolCame* instance, uint64_t key, uint8_t bit, uint8_t repeat) {
while (repeat--) {
//Send header
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_shot * 34); //+2 interval v bit 1
//Send start bit
subghz_protocol_came_send_bit(instance, 1);
//Send key data
for (uint8_t i = bit; i > 0; i--) {
subghz_protocol_came_send_bit(instance, bit_read(key, i - 1));
}
}
}
void subghz_protocol_came_reset(SubGhzProtocolCame* instance) {
instance->common.parser_step = 0;
}
void subghz_protocol_came_parse(SubGhzProtocolCame* instance, bool level, uint32_t duration) {
switch (instance->common.parser_step) {
case 0:
if ((!level)
&& (DURATION_DIFF(duration, instance->common.te_shot * 51)< instance->common.te_delta * 51)) { //Need protocol 36 te_shot
//Found header CAME
instance->common.parser_step = 1;
} else {
instance->common.parser_step = 0;
}
break;
case 1:
if (!level) {
break;
} else if (DURATION_DIFF(duration, instance->common.te_shot)< instance->common.te_delta) {
//Found start bit CAME
instance->common.parser_step = 2;
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
} else {
instance->common.parser_step = 0;
}
break;
case 2:
if (!level) { //save interval
if (duration >= (instance->common.te_shot * 4)) {
instance->common.parser_step = 1;
if (instance->common.code_count_bit>= instance->common.code_min_count_bit_for_found) {
instance->common.serial = 0x0;
instance->common.btn = 0x0;
if (instance->common.callback)
instance->common.callback((SubGhzProtocolCommon*)instance, instance->common.context);
}
break;
}
instance->common.te_last = duration;
instance->common.parser_step = 3;
} else {
instance->common.parser_step = 0;
}
break;
case 3:
if (level) {
if ((DURATION_DIFF(instance->common.te_last,instance->common.te_shot) < instance->common.te_delta)
&& (DURATION_DIFF(duration, instance->common.te_long)< instance->common.te_delta)) {
subghz_protocol_common_add_bit(&instance->common, 0);
instance->common.parser_step = 2;
} else if ((DURATION_DIFF(instance->common.te_last,instance->common.te_long)< instance->common.te_delta)
&& (DURATION_DIFF(duration, instance->common.te_shot)< instance->common.te_delta)) {
subghz_protocol_common_add_bit(&instance->common, 1);
instance->common.parser_step = 2;
} else
instance->common.parser_step = 0;
} else {
instance->common.parser_step = 0;
}
break;
}
}