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https://github.com/DarkFlippers/unleashed-firmware.git
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4f233ff0a3
* WIP: IRDA: multilen protocol refactoring, NEC42 * IRDA: Refactoring encoder/decoder Co-authored-by: あく <alleteam@gmail.com>
104 lines
3.6 KiB
C
104 lines
3.6 KiB
C
#include "common/irda_common_i.h"
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#include "irda.h"
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#include "irda_protocol_defs_i.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include <furi.h>
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#include "../irda_i.h"
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IrdaMessage* irda_decoder_nec_check_ready(void* ctx) {
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return irda_common_decoder_check_ready(ctx);
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}
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bool irda_decoder_nec_interpret(IrdaCommonDecoder* decoder) {
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furi_assert(decoder);
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bool result = false;
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if (decoder->databit_cnt == 32) {
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uint8_t address = decoder->data[0];
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uint8_t address_inverse = decoder->data[1];
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uint8_t command = decoder->data[2];
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uint8_t command_inverse = decoder->data[3];
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if ((command == (uint8_t) ~command_inverse) && (address == (uint8_t) ~address_inverse)) {
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decoder->message.protocol = IrdaProtocolNEC;
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decoder->message.address = address;
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decoder->message.command = command;
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decoder->message.repeat = false;
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result = true;
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} else {
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decoder->message.protocol = IrdaProtocolNECext;
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decoder->message.address = decoder->data[0] | (decoder->data[1] << 8);
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decoder->message.command = decoder->data[2] | (decoder->data[3] << 8);
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decoder->message.repeat = false;
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result = true;
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}
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} else if (decoder->databit_cnt == 42) {
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uint32_t* data1 = (void*) decoder->data;
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uint16_t* data2 = (void*) (data1 + 1);
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uint16_t address = *data1 & 0x1FFF;
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uint16_t address_inverse = (*data1 >> 13) & 0x1FFF;
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uint16_t command = ((*data1 >> 26) & 0x3F) | ((*data2 & 0x3) << 6);
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uint16_t command_inverse = (*data2 >> 2) & 0xFF;
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if ((address == (~address_inverse & 0x1FFF))
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&& (command == (~command_inverse & 0xFF))) {
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decoder->message.protocol = IrdaProtocolNEC42;
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decoder->message.address = address;
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decoder->message.command = command;
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decoder->message.repeat = false;
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result = true;
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} else {
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decoder->message.protocol = IrdaProtocolNEC42ext;
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decoder->message.address = address | (address_inverse << 13);
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decoder->message.command = command | (command_inverse << 8);
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decoder->message.repeat = false;
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result = true;
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}
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}
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return result;
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}
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// timings start from Space (delay between message and repeat)
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IrdaStatus irda_decoder_nec_decode_repeat(IrdaCommonDecoder* decoder) {
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furi_assert(decoder);
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float preamble_tolerance = decoder->protocol->timings.preamble_tolerance;
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uint32_t bit_tolerance = decoder->protocol->timings.bit_tolerance;
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IrdaStatus status = IrdaStatusError;
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if(decoder->timings_cnt < 4) return IrdaStatusOk;
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if((decoder->timings[0] > IRDA_NEC_REPEAT_PAUSE_MIN) &&
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(decoder->timings[0] < IRDA_NEC_REPEAT_PAUSE_MAX) &&
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MATCH_TIMING(decoder->timings[1], IRDA_NEC_REPEAT_MARK, preamble_tolerance) &&
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MATCH_TIMING(decoder->timings[2], IRDA_NEC_REPEAT_SPACE, preamble_tolerance) &&
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MATCH_TIMING(decoder->timings[3], decoder->protocol->timings.bit1_mark, bit_tolerance)) {
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status = IrdaStatusReady;
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decoder->timings_cnt = 0;
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} else {
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status = IrdaStatusError;
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}
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return status;
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}
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void* irda_decoder_nec_alloc(void) {
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return irda_common_decoder_alloc(&protocol_nec);
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}
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IrdaMessage* irda_decoder_nec_decode(void* decoder, bool level, uint32_t duration) {
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return irda_common_decode(decoder, level, duration);
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}
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void irda_decoder_nec_free(void* decoder) {
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irda_common_decoder_free(decoder);
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}
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void irda_decoder_nec_reset(void* decoder) {
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irda_common_decoder_reset(decoder);
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}
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