294 lines
11 KiB
C
294 lines
11 KiB
C
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#include "subghz_protocol_somfy_telis.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 "SubGhzSomfyTelis"
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struct SubGhzProtocolSomfyTelis {
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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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SomfyTelisDecoderStepReset = 0,
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SomfyTelisDecoderStepCheckPreambula,
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SomfyTelisDecoderStepFoundPreambula,
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SomfyTelisDecoderStepStartDecode,
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SomfyTelisDecoderStepDecoderData,
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} SomfyTelisDecoderStep;
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SubGhzProtocolSomfyTelis* subghz_protocol_somfy_telis_alloc() {
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SubGhzProtocolSomfyTelis* instance = furi_alloc(sizeof(SubGhzProtocolSomfyTelis));
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instance->common.name = "Somfy Telis";
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instance->common.code_min_count_bit_for_found = 56;
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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_telis_to_str;
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instance->common.to_load_protocol =
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(SubGhzProtocolCommonLoadFromRAW)subghz_decoder_somfy_telis_to_load_protocol;
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return instance;
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}
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void subghz_protocol_somfy_telis_free(SubGhzProtocolSomfyTelis* 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 SubGhzProtocolSomfyTelis instance
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*/
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void subghz_protocol_somfy_telis_remote_controller(SubGhzProtocolSomfyTelis* 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 | | 67648 us | 30415 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. | | Inter-frame
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* | | sync. | data | gap
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*
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*
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* encrypt | decrypt
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*
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* package 56 bit cnt key btn|crc cnt serial
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* 0xA7232323312222 - 0 => A7 8 0 | 00 00 | 12 13 00
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* 0xA7222223312222 - 1 => A7 8 5 | 00 01 | 12 13 00
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* 0xA7212123312222 - 2 => A7 8 6 | 00 02 | 12 13 00
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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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* Btn
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*
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* Value Button(s) Description
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* 0x1 My Stop or move to favourite position
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* 0x2 Up Move up
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* 0x3 My + Up Set upper motor limit in initial programming mode
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* 0x4 Down Move down
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* 0x5 My + Down Set lower motor limit in initial programming mode
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* 0x6 Up + Down Change motor limit and initial programming mode
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* 0x8 Prog Used for (de-)registering remotes, see below
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* 0x9 Sun + Flag Enable sun and wind detector (SUN and FLAG symbol on the Telis Soliris RC)
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* 0xA Flag Disable sun detector (FLAG symbol on the Telis Soliris RC)
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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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* cksum = cksum ^ frame[i] ^ (frame[i] >> 4);
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* }
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* cksum = cksum & 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 >> 44) & 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_telis_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_telis_get_name_button(uint8_t btn) {
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const char* name_btn[0x10] = {
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"Unknown",
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"My",
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"Up",
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"My+Up",
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"Down",
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"My+Down",
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"Up+Down",
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"0x07",
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"Prog",
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"Sun+Flag",
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"Flag",
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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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void subghz_protocol_somfy_telis_reset(SubGhzProtocolSomfyTelis* instance) {
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instance->common.parser_step = SomfyTelisDecoderStepReset;
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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_telis_parse(
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SubGhzProtocolSomfyTelis* 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 SomfyTelisDecoderStepReset:
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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 = SomfyTelisDecoderStepFoundPreambula;
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instance->common.header_count++;
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}
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break;
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case SomfyTelisDecoderStepFoundPreambula:
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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 = SomfyTelisDecoderStepCheckPreambula;
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} else {
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instance->common.header_count = 0;
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instance->common.parser_step = SomfyTelisDecoderStepReset;
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}
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break;
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case SomfyTelisDecoderStepCheckPreambula:
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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 = SomfyTelisDecoderStepFoundPreambula;
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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 = SomfyTelisDecoderStepDecoderData;
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instance->common.code_found = 0;
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instance->common.code_count_bit = 0;
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instance->common.header_count = 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 SomfyTelisDecoderStepDecoderData:
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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_telis_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 = SomfyTelisDecoderStepReset;
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} else {
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instance->common.parser_step = SomfyTelisDecoderStepReset;
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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 = SomfyTelisDecoderStepReset;
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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_somfy_telis_to_str(SubGhzProtocolSomfyTelis* instance, string_t output) {
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subghz_protocol_somfy_telis_remote_controller(instance);
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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 %db\r\n"
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"Key:0x%lX%08lX\r\n"
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"Sn:0x%06lX \r\n"
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"Cnt:0x%04X\r\n"
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"Btn:%s\r\n",
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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.serial,
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instance->common.cnt,
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subghz_protocol_somfy_telis_get_name_button(instance->common.btn));
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}
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void subghz_decoder_somfy_telis_to_load_protocol(SubGhzProtocolSomfyTelis* instance, void* context) {
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furi_assert(context);
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furi_assert(instance);
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SubGhzProtocolCommonLoad* data = context;
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instance->common.code_last_found = data->code_found;
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instance->common.code_last_count_bit = data->code_count_bit;
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subghz_protocol_somfy_telis_remote_controller(instance);
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}
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