395 lines
14 KiB
C
395 lines
14 KiB
C
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#include "subghz_protocol_came_twee.h"
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#include "subghz_protocol_common.h"
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#include <lib/toolbox/manchester-decoder.h>
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#include <lib/toolbox/manchester-encoder.h>
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/*
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* Help
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* https://phreakerclub.com/forum/showthread.php?t=635&highlight=came+twin
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*
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*/
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#define DIP_PATTERN "%c%c%c%c%c%c%c%c%c%c"
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#define CNT_TO_DIP(dip) \
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(dip & 0x0200 ? '1' : '0'), (dip & 0x0100 ? '1' : '0'), (dip & 0x0080 ? '1' : '0'), \
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(dip & 0x0040 ? '1' : '0'), (dip & 0x0020 ? '1' : '0'), (dip & 0x0010 ? '1' : '0'), \
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(dip & 0x0008 ? '1' : '0'), (dip & 0x0004 ? '1' : '0'), (dip & 0x0002 ? '1' : '0'), \
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(dip & 0x0001 ? '1' : '0')
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struct SubGhzProtocolCameTwee {
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SubGhzProtocolCommon common;
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ManchesterState manchester_saved_state;
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};
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typedef enum {
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CameTweeDecoderStepReset = 0,
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CameTweeDecoderStepDecoderData,
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} CameTweeDecoderStep;
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SubGhzProtocolCameTwee* subghz_protocol_came_twee_alloc() {
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SubGhzProtocolCameTwee* instance = furi_alloc(sizeof(SubGhzProtocolCameTwee));
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instance->common.name = "CAME TWEE";
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instance->common.code_min_count_bit_for_found = 54;
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instance->common.te_short = 500;
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instance->common.te_long = 1000;
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instance->common.te_delta = 250;
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instance->common.type_protocol = SubGhzProtocolCommonTypeStatic;
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instance->common.to_string = (SubGhzProtocolCommonToStr)subghz_protocol_came_twee_to_str;
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instance->common.to_save_string =
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(SubGhzProtocolCommonGetStrSave)subghz_protocol_came_twee_to_save_str;
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instance->common.to_load_protocol_from_file =
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(SubGhzProtocolCommonLoadFromFile)subghz_protocol_came_twee_to_load_protocol_from_file;
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instance->common.to_load_protocol =
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(SubGhzProtocolCommonLoadFromRAW)subghz_decoder_came_twee_to_load_protocol;
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instance->common.get_upload_protocol =
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(SubGhzProtocolCommonEncoderGetUpLoad)subghz_protocol_came_twee_send_key;
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return instance;
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}
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void subghz_protocol_came_twee_free(SubGhzProtocolCameTwee* instance) {
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furi_assert(instance);
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free(instance);
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}
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LevelDuration subghz_protocol_came_twee_add_duration_to_upload(
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SubGhzProtocolCameTwee* instance,
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ManchesterEncoderResult result) {
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LevelDuration data;
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switch(result) {
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case ManchesterEncoderResultShortLow:
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data.duration = instance->common.te_short;
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data.level = false;
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break;
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case ManchesterEncoderResultLongLow:
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data.duration = instance->common.te_long;
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data.level = false;
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break;
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case ManchesterEncoderResultLongHigh:
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data.duration = instance->common.te_long;
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data.level = true;
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break;
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case ManchesterEncoderResultShortHigh:
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data.duration = instance->common.te_short;
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data.level = 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 level_duration_make(data.level, data.duration);
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}
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bool subghz_protocol_came_twee_send_key(
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SubGhzProtocolCameTwee* instance,
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SubGhzProtocolCommonEncoder* encoder) {
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furi_assert(instance);
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furi_assert(encoder);
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const uint32_t magic_numbers_xor[15] = {
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0x0E0E0E00,
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0x1D1D1D11,
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0x2C2C2C22,
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0x3B3B3B33,
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0x4A4A4A44,
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0x59595955,
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0x68686866,
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0x77777777,
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0x86868688,
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0x95959599,
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0xA4A4A4AA,
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0xB3B3B3BB,
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0xC2C2C2CC,
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0xD1D1D1DD,
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0xE0E0E0EE,
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};
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size_t index = 0;
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ManchesterEncoderState enc_state;
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manchester_encoder_reset(&enc_state);
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ManchesterEncoderResult result;
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// encoder->size_upload = (instance->common.code_last_count_bit * 2) + 2;
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// if(encoder->size_upload > SUBGHZ_ENCODER_UPLOAD_MAX_SIZE) return false;
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uint64_t temp_parcel = 0x003FFF7200000000; //parcel mask
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for(int i = 14; i >= 0; i--) {
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temp_parcel = (temp_parcel & 0xFFFFFFFF00000000) |
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(instance->common.serial ^ magic_numbers_xor[i]);
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for(uint8_t i = instance->common.code_last_count_bit; i > 0; i--) {
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if(!manchester_encoder_advance(&enc_state, !bit_read(temp_parcel, i - 1), &result)) {
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encoder->upload[index++] =
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subghz_protocol_came_twee_add_duration_to_upload(instance, result);
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manchester_encoder_advance(&enc_state, !bit_read(temp_parcel, i - 1), &result);
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}
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encoder->upload[index++] =
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subghz_protocol_came_twee_add_duration_to_upload(instance, result);
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}
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encoder->upload[index] = subghz_protocol_came_twee_add_duration_to_upload(
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instance, manchester_encoder_finish(&enc_state));
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if(level_duration_get_level(encoder->upload[index])) {
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index++;
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}
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encoder->upload[index++] =
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level_duration_make(false, (uint32_t)instance->common.te_long * 51);
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}
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encoder->size_upload = index;
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return true;
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}
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/** Analysis of received data
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*
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* @param instance SubGhzProtocolCameTwee instance
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*/
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void subghz_protocol_came_twee_remote_controller(SubGhzProtocolCameTwee* instance) {
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/* Came Twee 54 bit, rolling code 15 parcels with
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* a decreasing counter from 0xE to 0x0
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* with originally coded dip switches on the console 10 bit code
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*
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* 0x003FFF72E04A6FEE
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* 0x003FFF72D17B5EDD
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* 0x003FFF72C2684DCC
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* 0x003FFF72B3193CBB
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* 0x003FFF72A40E2BAA
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* 0x003FFF72953F1A99
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* 0x003FFF72862C0988
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* 0x003FFF7277DDF877
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* 0x003FFF7268C2E766
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* 0x003FFF7259F3D655
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* 0x003FFF724AE0C544
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* 0x003FFF723B91B433
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* 0x003FFF722C86A322
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* 0x003FFF721DB79211
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* 0x003FFF720EA48100
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*
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* decryption
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* the last 32 bits, do XOR by the desired number, divide the result by 4,
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* convert the first 16 bits of the resulting 32-bit number to bin and do
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* bit-by-bit mirroring, adding up to 10 bits
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*
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* Example
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* Step 1. 0x003FFF721DB79211 => 0x1DB79211
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* Step 4. 0x1DB79211 xor 0x1D1D1D11 => 0x00AA8F00
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* Step 4. 0x00AA8F00 / 4 => 0x002AA3C0
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* Step 5. 0x002AA3C0 => 0x002A
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* Step 6. 0x002A bin => b101010
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* Step 7. b101010 => b0101010000
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* Step 8. b0101010000 => (Dip) Off ON Off ON Off ON Off Off Off Off
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*/
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const uint32_t magic_numbers_xor[15] = {
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0x0E0E0E00,
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0x1D1D1D11,
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0x2C2C2C22,
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0x3B3B3B33,
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0x4A4A4A44,
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0x59595955,
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0x68686866,
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0x77777777,
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0x86868688,
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0x95959599,
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0xA4A4A4AA,
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0xB3B3B3BB,
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0xC2C2C2CC,
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0xD1D1D1DD,
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0xE0E0E0EE,
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};
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uint8_t cnt_parcel = (uint8_t)(instance->common.code_last_found & 0xF);
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uint32_t data = (uint32_t)(instance->common.code_last_found & 0x0FFFFFFFF);
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data = (data ^ magic_numbers_xor[cnt_parcel]);
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instance->common.serial = data;
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data /= 4;
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instance->common.btn = (data >> 4) & 0x0F;
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data >>= 16;
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data = (uint16_t)subghz_protocol_common_reverse_key(data, 16);
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instance->common.cnt = data >> 6;
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}
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void subghz_protocol_came_twee_reset(SubGhzProtocolCameTwee* instance) {
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instance->common.parser_step = CameTweeDecoderStepReset;
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventReset,
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&instance->manchester_saved_state,
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NULL);
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}
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void subghz_protocol_came_twee_parse(
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SubGhzProtocolCameTwee* instance,
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bool level,
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uint32_t duration) {
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ManchesterEvent event = ManchesterEventReset;
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switch(instance->common.parser_step) {
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case CameTweeDecoderStepReset:
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if((!level) && (DURATION_DIFF(duration, instance->common.te_long * 51) <
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instance->common.te_delta * 20)) {
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//Found header CAME
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instance->common.parser_step = CameTweeDecoderStepDecoderData;
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instance->common.code_found = 0;
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instance->common.code_count_bit = 0;
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongLow,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongHigh,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventShortLow,
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&instance->manchester_saved_state,
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NULL);
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} else {
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instance->common.parser_step = CameTweeDecoderStepReset;
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}
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break;
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case CameTweeDecoderStepDecoderData:
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if(!level) {
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if(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta) {
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event = ManchesterEventShortLow;
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} else if(DURATION_DIFF(duration, instance->common.te_long) < instance->common.te_delta) {
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event = ManchesterEventLongLow;
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} else if(duration >= (instance->common.te_long * 2 + instance->common.te_delta)) {
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if(instance->common.code_count_bit >=
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instance->common.code_min_count_bit_for_found) {
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instance->common.code_last_found = instance->common.code_found;
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instance->common.code_last_count_bit = instance->common.code_count_bit;
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if(instance->common.callback)
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instance->common.callback(
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(SubGhzProtocolCommon*)instance, instance->common.context);
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}
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instance->common.code_found = 0;
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instance->common.code_count_bit = 0;
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongLow,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongHigh,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventShortLow,
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&instance->manchester_saved_state,
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NULL);
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} else {
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instance->common.parser_step = CameTweeDecoderStepReset;
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}
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} else {
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if(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta) {
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event = ManchesterEventShortHigh;
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} else if(DURATION_DIFF(duration, instance->common.te_long) < instance->common.te_delta) {
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event = ManchesterEventLongHigh;
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} else {
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instance->common.parser_step = CameTweeDecoderStepReset;
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}
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}
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if(event != ManchesterEventReset) {
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bool data;
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bool data_ok = manchester_advance(
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instance->manchester_saved_state, event, &instance->manchester_saved_state, &data);
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if(data_ok) {
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instance->common.code_found = (instance->common.code_found << 1) | !data;
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instance->common.code_count_bit++;
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}
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}
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break;
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}
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}
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void subghz_protocol_came_twee_to_str(SubGhzProtocolCameTwee* instance, string_t output) {
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uint32_t code_found_hi = instance->common.code_last_found >> 32;
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uint32_t code_found_lo = instance->common.code_last_found & 0x00000000ffffffff;
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string_cat_printf(
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output,
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"%s %dbit\r\n"
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"Key:0x%lX%08lX\r\n"
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"Btn:%lX\r\n"
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"DIP:" DIP_PATTERN,
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instance->common.name,
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instance->common.code_last_count_bit,
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code_found_hi,
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code_found_lo,
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instance->common.btn,
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CNT_TO_DIP(instance->common.cnt));
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}
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void subghz_protocol_came_twee_to_save_str(SubGhzProtocolCameTwee* instance, string_t output) {
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string_printf(
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output,
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"Protocol: %s\n"
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"Bit: %d\n"
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"Key: %08lX%08lX\r\n",
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instance->common.name,
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instance->common.code_last_count_bit,
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(uint32_t)(instance->common.code_last_found >> 32),
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(uint32_t)(instance->common.code_last_found & 0xFFFFFFFF));
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}
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||
|
|
|
||
|
|
bool subghz_protocol_came_twee_to_load_protocol_from_file(
|
||
|
|
FileWorker* file_worker,
|
||
|
|
SubGhzProtocolCameTwee* instance) {
|
||
|
|
bool loaded = false;
|
||
|
|
string_t temp_str;
|
||
|
|
string_init(temp_str);
|
||
|
|
int res = 0;
|
||
|
|
int data = 0;
|
||
|
|
|
||
|
|
do {
|
||
|
|
// Read and parse bit data from 2nd line
|
||
|
|
if(!file_worker_read_until(file_worker, temp_str, '\n')) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
res = sscanf(string_get_cstr(temp_str), "Bit: %d\n", &data);
|
||
|
|
if(res != 1) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
instance->common.code_last_count_bit = (uint8_t)data;
|
||
|
|
|
||
|
|
// Read and parse key data from 3nd line
|
||
|
|
if(!file_worker_read_until(file_worker, temp_str, '\n')) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
// strlen("Key: ") = 5
|
||
|
|
string_right(temp_str, 5);
|
||
|
|
|
||
|
|
uint8_t buf_key[8] = {0};
|
||
|
|
if(!subghz_protocol_common_read_hex(temp_str, buf_key, 8)) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
for(uint8_t i = 0; i < 8; i++) {
|
||
|
|
instance->common.code_last_found = instance->common.code_last_found << 8 | buf_key[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
loaded = true;
|
||
|
|
} while(0);
|
||
|
|
|
||
|
|
string_clear(temp_str);
|
||
|
|
|
||
|
|
subghz_protocol_came_twee_remote_controller(instance);
|
||
|
|
return loaded;
|
||
|
|
}
|
||
|
|
|
||
|
|
void subghz_decoder_came_twee_to_load_protocol(SubGhzProtocolCameTwee* instance, void* context) {
|
||
|
|
furi_assert(context);
|
||
|
|
furi_assert(instance);
|
||
|
|
SubGhzProtocolCommonLoad* data = context;
|
||
|
|
instance->common.code_last_found = data->code_found;
|
||
|
|
instance->common.code_last_count_bit = data->code_count_bit;
|
||
|
|
subghz_protocol_came_twee_remote_controller(instance);
|
||
|
|
}
|