389ff92cc1
* Makefile, Scripts: new linter * About: remove ID from IC * Firmware: remove double define for DIVC/DIVR * Scripts: check folder names too. Docker: replace syntax check with make lint. * Reformat Sources and Migrate to new file naming convention * Docker: symlink clang-format-12 to clang-format * Add coding style guide
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#include "manchester_encoder.h"
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#include <stdio.h>
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void manchester_encoder_reset(ManchesterEncoderState* state) {
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state->step = 0;
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}
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bool manchester_encoder_advance(
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ManchesterEncoderState* state,
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const bool curr_bit,
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ManchesterEncoderResult* result) {
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bool advance = false;
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switch(state->step) {
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case 0:
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state->prev_bit = curr_bit;
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if(state->prev_bit) {
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*result = ManchesterEncoderResultShortLow;
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} else {
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*result = ManchesterEncoderResultShortHigh;
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}
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state->step = 1;
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advance = true;
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break;
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case 1:
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*result = (state->prev_bit << 1) + curr_bit;
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if(curr_bit == state->prev_bit) {
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state->step = 2;
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} else {
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state->prev_bit = curr_bit;
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advance = true;
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}
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break;
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case 2:
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if(curr_bit) {
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*result = ManchesterEncoderResultShortLow;
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} else {
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*result = ManchesterEncoderResultShortHigh;
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}
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state->prev_bit = curr_bit;
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state->step = 1;
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advance = true;
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break;
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default:
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printf("DO CRASH HERE\r\n");
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// furi_crash
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break;
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}
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return advance;
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}
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ManchesterEncoderResult manchester_encoder_finish(ManchesterEncoderState* state) {
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state->step = 0;
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return (state->prev_bit << 1) + state->prev_bit;
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} |