flipperzero-firmware/lib/irda/encoder_decoder/nec/irda_decoder_nec.c
Albert Kharisov e6d5f4038b
[FL-1696, FL-1685] IRDA: Add RC5, decoder refactoring (#663)
* [FL-1696] IRDA: Split decoders and protocols
* IRDA: Restruct directories.
* IRDA: fix long timings
* [FL-1685] IRDA: Add RC5

Co-authored-by: あく <alleteam@gmail.com>
2021-08-20 23:51:15 +03:00

74 lines
2.3 KiB
C

#include "irda.h"
#include "irda_protocol_defs_i.h"
#include <stdbool.h>
#include <stdint.h>
#include <furi.h>
#include "../irda_i.h"
bool irda_decoder_nec_interpret(IrdaCommonDecoder* decoder) {
furi_assert(decoder);
bool result = false;
uint8_t address = decoder->data[0];
uint8_t address_inverse = decoder->data[1];
uint8_t command = decoder->data[2];
uint8_t command_inverse = decoder->data[3];
if (command == (uint8_t) ~command_inverse) {
if (address == (uint8_t) ~address_inverse) {
decoder->message.protocol = IrdaProtocolNEC;
decoder->message.address = address;
} else {
decoder->message.protocol = IrdaProtocolNECext;
decoder->message.address = decoder->data[0] | (decoder->data[1] << 8);
}
decoder->message.command = command;
decoder->message.repeat = false;
result = true;
}
return result;
}
// timings start from Space (delay between message and repeat)
IrdaStatus irda_decoder_nec_decode_repeat(IrdaCommonDecoder* decoder) {
furi_assert(decoder);
float preamble_tolerance = decoder->protocol->timings.preamble_tolerance;
uint32_t bit_tolerance = decoder->protocol->timings.bit_tolerance;
IrdaStatus status = IrdaStatusError;
if(decoder->timings_cnt < 4) return IrdaStatusOk;
if((decoder->timings[0] > IRDA_NEC_REPEAT_PAUSE_MIN) &&
(decoder->timings[0] < IRDA_NEC_REPEAT_PAUSE_MAX) &&
MATCH_PREAMBLE_TIMING(decoder->timings[1], IRDA_NEC_REPEAT_MARK, preamble_tolerance) &&
MATCH_PREAMBLE_TIMING(decoder->timings[2], IRDA_NEC_REPEAT_SPACE, preamble_tolerance) &&
MATCH_BIT_TIMING(decoder->timings[3], decoder->protocol->timings.bit1_mark, bit_tolerance)) {
status = IrdaStatusReady;
decoder->timings_cnt = 0;
} else {
status = IrdaStatusError;
}
return status;
}
void* irda_decoder_nec_alloc(void) {
return irda_common_decoder_alloc(&protocol_nec);
}
IrdaMessage* irda_decoder_nec_decode(void* decoder, bool level, uint32_t duration) {
return irda_common_decode(decoder, level, duration);
}
void irda_decoder_nec_free(void* decoder) {
irda_common_decoder_free(decoder);
}
void irda_decoder_nec_reset(void* decoder) {
irda_common_decoder_reset(decoder);
}