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https://github.com/eried/portapack-mayhem.git
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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
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#ifndef __FPROTO_PRINCETON_H__
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#define __FPROTO_PRINCETON_H__
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#include "subghzdbase.hpp"
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typedef enum : uint8_t {
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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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class FProtoSubGhzDPrinceton : public FProtoSubGhzDBase {
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public:
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FProtoSubGhzDPrinceton() {
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sensorType = FPS_PRINCETON;
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te_short = 390;
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te_long = 1170;
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te_delta = 300;
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min_count_bit_for_found = 24;
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}
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void feed(bool level, uint32_t duration) {
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switch (parser_step) {
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case PrincetonDecoderStepReset:
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if ((!level) && (DURATION_DIFF(duration, te_short * 36) < te_delta * 36)) {
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// Found Preambula
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parser_step = PrincetonDecoderStepSaveDuration;
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decode_data = 0;
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decode_count_bit = 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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te_last = duration;
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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)te_long * 2)) {
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parser_step = PrincetonDecoderStepSaveDuration;
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if (decode_count_bit == min_count_bit_for_found) {
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data = decode_data;
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data_count_bit = decode_count_bit;
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if (callback) callback(this);
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}
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decode_data = 0;
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decode_count_bit = 0;
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break;
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}
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if ((DURATION_DIFF(te_last, te_short) < te_delta) &&
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(DURATION_DIFF(duration, te_long) < te_delta * 3)) {
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subghz_protocol_blocks_add_bit(0);
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parser_step = PrincetonDecoderStepSaveDuration;
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} else if (
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(DURATION_DIFF(te_last, te_long) < te_delta * 3) &&
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(DURATION_DIFF(duration, te_short) < te_delta)) {
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subghz_protocol_blocks_add_bit(1);
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parser_step = PrincetonDecoderStepSaveDuration;
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} else {
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parser_step = PrincetonDecoderStepReset;
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}
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} else {
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parser_step = PrincetonDecoderStepReset;
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}
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break;
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}
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}
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};
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#endif
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