mirror of https://github.com/merbanan/rtl_433.git
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/** @file
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Honda Car Key.
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Copyright (C) 2016 Adrian Stevenson
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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*/
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/**
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Honda Car Key.
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Identifies button event, but does not attempt to decrypt rolling code...
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Note that this is actually Manchester coded and should be changed.
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*/
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#include "decoder.h"
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static char const *const command_code[] = {"boot", "unlock" , "lock",};
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static char const *get_command_codes(const uint8_t *bytes)
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{
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unsigned char command = bytes[46] - 0xAA;
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if (command < (sizeof(command_code) / sizeof(command_code[0]))) {
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return command_code[command];
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} else {
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return "unknown";
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}
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}
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static int hondaremote_callback(r_device *decoder, bitbuffer_t *bitbuffer)
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{
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data_t *data;
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uint8_t *b;
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char const *code;
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uint16_t device_id;
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for (int row = 0; row < bitbuffer->num_rows; ++row) {
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b = bitbuffer->bb[row];
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// Validate package
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if (((bitbuffer->bits_per_row[row] < 385) || (bitbuffer->bits_per_row[row] > 394)) ||
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((b[0] != 0xFF) || (b[38] != 0xFF)))
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continue; // DECODE_ABORT_LENGTH
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code = get_command_codes(b);
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device_id = b[44]<<8 | b[45];
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/* clang-format off */
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data = data_make(
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"model", "", DATA_STRING, "Honda-CarRemote",
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"id", "", DATA_INT, device_id,
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"code", "", DATA_STRING, code,
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NULL);
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/* clang-format on */
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decoder_output_data(decoder, data);
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return 1;
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}
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return 0;
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}
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static char const *const output_fields[] = {
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"model",
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"id",
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"code",
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NULL,
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};
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r_device const hondaremote = {
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.name = "Honda Car Key",
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.modulation = FSK_PULSE_PWM,
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.short_width = 250,
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.long_width = 500,
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.reset_limit = 2000,
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.decode_fn = &hondaremote_callback,
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.disabled = 1, // no MIC, weak sanity checks
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.fields = output_fields,
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};
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