2022-01-27 12:28:21 +00:00
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#include "subghz_protocol_somfy_keytis.h"
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#include "subghz_protocol_common.h"
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#include <lib/toolbox/manchester_decoder.h>
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#define TAG "SubGhzSomfyKeytis"
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struct SubGhzProtocolSomfyKeytis {
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SubGhzProtocolCommon common;
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ManchesterState manchester_saved_state;
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uint32_t press_duration_counter;
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};
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typedef enum {
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SomfyKeytisDecoderStepReset = 0,
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SomfyKeytisDecoderStepCheckPreambula,
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SomfyKeytisDecoderStepFoundPreambula,
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SomfyKeytisDecoderStepStartDecode,
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SomfyKeytisDecoderStepDecoderData,
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} SomfyKeytisDecoderStep;
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SubGhzProtocolSomfyKeytis* subghz_protocol_somfy_keytis_alloc() {
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2022-02-18 19:53:46 +00:00
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SubGhzProtocolSomfyKeytis* instance = malloc(sizeof(SubGhzProtocolSomfyKeytis));
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2022-01-27 12:28:21 +00:00
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instance->common.name = "Somfy Keytis";
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instance->common.code_min_count_bit_for_found = 80;
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instance->common.te_short = 640;
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instance->common.te_long = 1280;
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instance->common.te_delta = 250;
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instance->common.type_protocol = SubGhzProtocolCommonTypeDynamic;
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instance->common.to_string = (SubGhzProtocolCommonToStr)subghz_protocol_somfy_keytis_to_str;
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instance->common.to_load_protocol =
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(SubGhzProtocolCommonLoadFromRAW)subghz_decoder_somfy_keytis_to_load_protocol;
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return instance;
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}
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void subghz_protocol_somfy_keytis_free(SubGhzProtocolSomfyKeytis* instance) {
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furi_assert(instance);
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free(instance);
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}
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/** Analysis of received data
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*
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* @param instance SubGhzProtocolSomfyKeytis instance
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*/
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void subghz_protocol_somfy_keytis_remote_controller(SubGhzProtocolSomfyKeytis* instance) {
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//https://pushstack.wordpress.com/somfy-rts-protocol/
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/*
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* 604 us
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* /
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* | 2416us | 2416us | 2416us | 2416us | 4550 us | |
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*
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* +--------+ +--------+ +---...---+
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* + +--------+ +--------+ +--+XXXX...XXX+
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*
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* | hw. sync. | soft. | |
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* | | sync. | data |
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*
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*
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* encrypt | decrypt
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*
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* package 80 bit pdc key btn crc cnt serial
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*
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* 0xA453537C4B9855 C40019 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 C80026 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 CC0033 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D00049 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D4005C => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D80063 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 DC0076 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E00086 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E40093 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E800AC => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 EC00B9 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 F000C3 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 F400D6 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 F800E9 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 FC00FC => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 FC0102 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 FC0113 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 FC0120 => 0xA 4 F 7 002F 37D3CD
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* ..........
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* 0xA453537C4B9855 FC048F => 0xA 4 F 7 002F 37D3CD
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*
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* Pdc: "Press Duration Counter" the total delay of the button is sent 72 parcels,
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* pdc cnt4b cnt8b pdc_crc
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* C40019 => 11 0001 00 0000 00000001 1001
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* C80026 => 11 0010 00 0000 00000010 0110
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* CC0033 => 11 0011 00 0000 00000011 0011
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* D00049 => 11 0100 00 0000 00000100 1001
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* D4005C => 11 0101 00 0000 00000101 1100
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* D80063 => 11 0110 00 0000 00000110 0011
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* DC0076 => 11 0111 00 0000 00000111 0110
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* E00086 => 11 1000 00 0000 00001000 0110
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* E40093 => 11 1001 00 0000 00001001 0011
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* E800AC => 11 1010 00 0000 00001010 1100
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* EC00B9 => 11 1011 00 0000 00001011 1001
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* F000C3 => 11 1100 00 0000 00001100 0011
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* F400D6 => 11 1101 00 0000 00001101 0110
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* F800E9 => 11 1110 00 0000 00001110 1001
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* FC00FC => 11 1111 00 0000 00001111 1100
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* FC0102 => 11 1111 00 0000 00010000 0010
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* FC0113 => 11 1111 00 0000 00010001 0011
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* FC0120 => 11 1111 00 0000 00010010 0000
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*
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* Cnt4b: 4-bit counter changes from 1 to 15 then always equals 15
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* Cnt8b: 8-bit counter changes from 1 to 72 (0x48)
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* Ppdc_crc:
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* uint8_t crc=0;
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* for(i=4; i<24; i+=4){
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* crc ^=(pdc>>i);
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* }
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* return crc;
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* example: crc = 1^0^0^4^C = 9
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* 11, 00, 0000: const
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*
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* Key: “Encryption Key”, Most significant 4-bit are always 0xA, Least Significant bits is
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* a linear counter. In the Smoove Origin this counter is increased together with the
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* rolling code. But leaving this on a constant value also works. Gerardwr notes that
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* for some other types of remotes the MSB is not constant.
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* Btn: 4-bit Control codes, this indicates the button that is pressed
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* CRC: 4-bit Checksum.
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* Ctn: 16-bit rolling code (big-endian) increased with every button press.
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* Serial: 24-bit identifier of sending device (little-endian)
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*
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*
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* Decrypt
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*
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* uint8_t frame[7];
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* for (i=1; i < 7; i++) {
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* frame[i] = frame[i] ^ frame[i-1];
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* }
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* or
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* uint64 Decrypt = frame ^ (frame>>8);
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*
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* CRC
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*
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* uint8_t frame[7];
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* for (i=0; i < 7; i++) {
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* crc = crc ^ frame[i] ^ (frame[i] >> 4);
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* }
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* crc = crc & 0xf;
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*
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*/
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uint64_t data = instance->common.code_last_found ^ (instance->common.code_last_found >> 8);
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instance->common.btn = (data >> 48) & 0xF;
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instance->common.cnt = (data >> 24) & 0xFFFF;
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instance->common.serial = data & 0xFFFFFF;
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}
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uint8_t subghz_protocol_somfy_keytis_crc(uint64_t data) {
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uint8_t crc = 0;
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data &= 0xFFF0FFFFFFFFFF;
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for(uint8_t i = 0; i < 56; i += 8) {
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crc = crc ^ data >> i ^ (data >> (i + 4));
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}
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return crc & 0xf;
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}
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const char* subghz_protocol_somfy_keytis_get_name_button(uint8_t btn) {
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const char* name_btn[0x10] = {
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"Unknown",
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"0x01",
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"0x02",
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"Prog",
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"Key_1",
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"0x05",
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"0x06",
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"0x07",
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"0x08",
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"0x09",
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"0x0A",
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"0x0B",
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"0x0C",
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"0x0D",
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"0x0E",
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"0x0F"};
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return btn <= 0xf ? name_btn[btn] : name_btn[0];
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}
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uint32_t subghz_protocol_somfy_keytis_get_press_duration(void* context) {
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SubGhzProtocolSomfyKeytis* instance = context;
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return instance->press_duration_counter;
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}
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void subghz_protocol_somfy_keytis_reset(SubGhzProtocolSomfyKeytis* instance) {
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instance->common.parser_step = SomfyKeytisDecoderStepReset;
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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_somfy_keytis_parse(
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SubGhzProtocolSomfyKeytis* 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 SomfyKeytisDecoderStepReset:
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if((level) && DURATION_DIFF(duration, instance->common.te_short * 4) <
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instance->common.te_delta * 4) {
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instance->common.parser_step = SomfyKeytisDecoderStepFoundPreambula;
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instance->common.header_count++;
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}
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break;
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case SomfyKeytisDecoderStepFoundPreambula:
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if((!level) && (DURATION_DIFF(duration, instance->common.te_short * 4) <
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instance->common.te_delta * 4)) {
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instance->common.parser_step = SomfyKeytisDecoderStepCheckPreambula;
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} else {
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instance->common.header_count = 0;
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instance->common.parser_step = SomfyKeytisDecoderStepReset;
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}
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break;
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case SomfyKeytisDecoderStepCheckPreambula:
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if(level) {
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if(DURATION_DIFF(duration, instance->common.te_short * 4) <
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instance->common.te_delta * 4) {
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instance->common.parser_step = SomfyKeytisDecoderStepFoundPreambula;
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instance->common.header_count++;
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} else if(
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(instance->common.header_count > 1) &&
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(DURATION_DIFF(duration, instance->common.te_short * 7) <
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instance->common.te_delta * 4)) {
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instance->common.parser_step = SomfyKeytisDecoderStepDecoderData;
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instance->common.code_found = 0;
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instance->common.code_count_bit = 0;
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instance->press_duration_counter = 0;
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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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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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}
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}
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break;
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case SomfyKeytisDecoderStepDecoderData:
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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 + 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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//check crc
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uint64_t data_tmp = instance->common.code_last_found ^
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(instance->common.code_last_found >> 8);
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if(((data_tmp >> 40) & 0xF) == subghz_protocol_somfy_keytis_crc(data_tmp)) {
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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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}
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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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ManchesterEventReset,
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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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instance->common.parser_step = SomfyKeytisDecoderStepReset;
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} else {
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instance->common.parser_step = SomfyKeytisDecoderStepReset;
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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 = SomfyKeytisDecoderStepReset;
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}
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}
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|
|
|
if(event != ManchesterEventReset) {
|
|
|
|
|
bool data;
|
|
|
|
|
bool data_ok = manchester_advance(
|
|
|
|
|
instance->manchester_saved_state, event, &instance->manchester_saved_state, &data);
|
|
|
|
|
|
|
|
|
|
if(data_ok) {
|
|
|
|
|
if(instance->common.code_count_bit < 56) {
|
|
|
|
|
instance->common.code_found = (instance->common.code_found << 1) | data;
|
|
|
|
|
} else {
|
|
|
|
|
instance->press_duration_counter = (instance->press_duration_counter << 1) |
|
|
|
|
|
data;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
instance->common.code_count_bit++;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void subghz_protocol_somfy_keytis_to_str(SubGhzProtocolSomfyKeytis* instance, string_t output) {
|
|
|
|
|
subghz_protocol_somfy_keytis_remote_controller(instance);
|
|
|
|
|
uint32_t code_found_hi = instance->common.code_last_found >> 32;
|
|
|
|
|
uint32_t code_found_lo = instance->common.code_last_found & 0x00000000ffffffff;
|
|
|
|
|
|
|
|
|
|
string_cat_printf(
|
|
|
|
|
output,
|
|
|
|
|
"%s %db\r\n"
|
|
|
|
|
"%lX%08lX%06lX\r\n"
|
|
|
|
|
"Sn:0x%06lX \r\n"
|
|
|
|
|
"Cnt:0x%04X\r\n"
|
|
|
|
|
"Btn:%s\r\n",
|
|
|
|
|
|
|
|
|
|
instance->common.name,
|
|
|
|
|
instance->common.code_last_count_bit,
|
|
|
|
|
code_found_hi,
|
|
|
|
|
code_found_lo,
|
|
|
|
|
instance->press_duration_counter,
|
|
|
|
|
instance->common.serial,
|
|
|
|
|
instance->common.cnt,
|
|
|
|
|
subghz_protocol_somfy_keytis_get_name_button(instance->common.btn));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void subghz_decoder_somfy_keytis_to_load_protocol(
|
|
|
|
|
SubGhzProtocolSomfyKeytis* 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;
|
|
|
|
|
instance->press_duration_counter = data->param1;
|
|
|
|
|
subghz_protocol_somfy_keytis_remote_controller(instance);
|
|
|
|
|
}
|
