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#include "subghz_protocol_somfy_telis.h"
#include "subghz_protocol_common.h"
#include <lib/toolbox/manchester_decoder.h>
#define TAG "SubGhzSomfyTelis"
struct SubGhzProtocolSomfyTelis {
SubGhzProtocolCommon common;
ManchesterState manchester_saved_state;
};
typedef enum {
SomfyTelisDecoderStepReset = 0,
SomfyTelisDecoderStepCheckPreambula,
SomfyTelisDecoderStepFoundPreambula,
SomfyTelisDecoderStepStartDecode,
SomfyTelisDecoderStepDecoderData,
} SomfyTelisDecoderStep;
SubGhzProtocolSomfyTelis* subghz_protocol_somfy_telis_alloc() {
SubGhzProtocolSomfyTelis* instance = furi_alloc(sizeof(SubGhzProtocolSomfyTelis));
instance->common.name = "Somfy Telis";
instance->common.code_min_count_bit_for_found = 56;
instance->common.te_short = 640;
instance->common.te_long = 1280;
instance->common.te_delta = 250;
instance->common.type_protocol = SubGhzProtocolCommonTypeDynamic;
instance->common.to_string = (SubGhzProtocolCommonToStr)subghz_protocol_somfy_telis_to_str;
instance->common.to_load_protocol =
(SubGhzProtocolCommonLoadFromRAW)subghz_decoder_somfy_telis_to_load_protocol;
return instance;
}
void subghz_protocol_somfy_telis_free(SubGhzProtocolSomfyTelis* instance) {
furi_assert(instance);
free(instance);
}
/** Analysis of received data
*
* @param instance SubGhzProtocolSomfyTelis instance
*/
void subghz_protocol_somfy_telis_remote_controller(SubGhzProtocolSomfyTelis* instance) {
//https://pushstack.wordpress.com/somfy-rts-protocol/
/*
* 604 us
* /
* | 2416us | 2416us | 2416us | 2416us | 4550 us | | 67648 us | 30415 us |
*
* +--------+ +--------+ +---...---+
* + +--------+ +--------+ +--+XXXX...XXX+-----...-----
*
* | hw. sync. | soft. | | Inter-frame
* | | sync. | data | gap
*
*
* encrypt | decrypt
*
* package 56 bit cnt key btn|crc cnt serial
* 0xA7232323312222 - 0 => A7 8 0 | 00 00 | 12 13 00
* 0xA7222223312222 - 1 => A7 8 5 | 00 01 | 12 13 00
* 0xA7212123312222 - 2 => A7 8 6 | 00 02 | 12 13 00
*
* Key: “Encryption Key”, Most significant 4-bit are always 0xA, Least Significant bits is
* a linear counter. In the Smoove Origin this counter is increased together with the
* rolling code. But leaving this on a constant value also works. Gerardwr notes that
* for some other types of remotes the MSB is not constant.
* Btn: 4-bit Control codes, this indicates the button that is pressed
* CRC: 4-bit Checksum.
* Ctn: 16-bit rolling code (big-endian) increased with every button press.
* Serial: 24-bit identifier of sending device (little-endian)
*
*
* Decrypt
*
* uint8_t frame[7];
* for (i=1; i < 7; i++) {
* frame[i] = frame[i] ^ frame[i-1];
* }
* or
* uint64 Decrypt = frame ^ (frame>>8);
*
* Btn
*
* Value Button(s) Description
* 0x1 My Stop or move to favourite position
* 0x2 Up Move up
* 0x3 My + Up Set upper motor limit in initial programming mode
* 0x4 Down Move down
* 0x5 My + Down Set lower motor limit in initial programming mode
* 0x6 Up + Down Change motor limit and initial programming mode
* 0x8 Prog Used for (de-)registering remotes, see below
* 0x9 Sun + Flag Enable sun and wind detector (SUN and FLAG symbol on the Telis Soliris RC)
* 0xA Flag Disable sun detector (FLAG symbol on the Telis Soliris RC)
*
* CRC
*
* uint8_t frame[7];
* for (i=0; i < 7; i++) {
* cksum = cksum ^ frame[i] ^ (frame[i] >> 4);
* }
* cksum = cksum & 0xf;
*
*/
uint64_t data = instance->common.code_last_found ^ (instance->common.code_last_found >> 8);
instance->common.btn = (data >> 44) & 0xF;
instance->common.cnt = (data >> 24) & 0xFFFF;
instance->common.serial = data & 0xFFFFFF;
}
uint8_t subghz_protocol_somfy_telis_crc(uint64_t data) {
uint8_t crc = 0;
data &= 0xFFF0FFFFFFFFFF;
for(uint8_t i = 0; i < 56; i += 8) {
crc = crc ^ data >> i ^ (data >> (i + 4));
}
return crc & 0xf;
}
const char* subghz_protocol_somfy_telis_get_name_button(uint8_t btn) {
const char* name_btn[0x10] = {
"Unknown",
"My",
"Up",
"My+Up",
"Down",
"My+Down",
"Up+Down",
"0x07",
"Prog",
"Sun+Flag",
"Flag",
"0x0B",
"0x0C",
"0x0D",
"0x0E",
"0x0F"};
return btn <= 0xf ? name_btn[btn] : name_btn[0];
}
void subghz_protocol_somfy_telis_reset(SubGhzProtocolSomfyTelis* instance) {
instance->common.parser_step = SomfyTelisDecoderStepReset;
manchester_advance(
instance->manchester_saved_state,
ManchesterEventReset,
&instance->manchester_saved_state,
NULL);
}
void subghz_protocol_somfy_telis_parse(
SubGhzProtocolSomfyTelis* instance,
bool level,
uint32_t duration) {
ManchesterEvent event = ManchesterEventReset;
switch(instance->common.parser_step) {
case SomfyTelisDecoderStepReset:
if((level) && DURATION_DIFF(duration, instance->common.te_short * 4) <
instance->common.te_delta * 4) {
instance->common.parser_step = SomfyTelisDecoderStepFoundPreambula;
instance->common.header_count++;
}
break;
case SomfyTelisDecoderStepFoundPreambula:
if((!level) && (DURATION_DIFF(duration, instance->common.te_short * 4) <
instance->common.te_delta * 4)) {
instance->common.parser_step = SomfyTelisDecoderStepCheckPreambula;
} else {
instance->common.header_count = 0;
instance->common.parser_step = SomfyTelisDecoderStepReset;
}
break;
case SomfyTelisDecoderStepCheckPreambula:
if(level) {
if(DURATION_DIFF(duration, instance->common.te_short * 4) <
instance->common.te_delta * 4) {
instance->common.parser_step = SomfyTelisDecoderStepFoundPreambula;
instance->common.header_count++;
} else if(
(instance->common.header_count > 1) &&
(DURATION_DIFF(duration, instance->common.te_short * 7) <
instance->common.te_delta * 4)) {
instance->common.parser_step = SomfyTelisDecoderStepDecoderData;
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
instance->common.header_count = 0;
manchester_advance(
instance->manchester_saved_state,
ManchesterEventReset,
&instance->manchester_saved_state,
NULL);
manchester_advance(
instance->manchester_saved_state,
ManchesterEventLongHigh,
&instance->manchester_saved_state,
NULL);
}
}
break;
case SomfyTelisDecoderStepDecoderData:
if(!level) {
if(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta) {
event = ManchesterEventShortLow;
} else if(DURATION_DIFF(duration, instance->common.te_long) < instance->common.te_delta) {
event = ManchesterEventLongLow;
} else if(duration >= (instance->common.te_long + instance->common.te_delta)) {
if(instance->common.code_count_bit ==
instance->common.code_min_count_bit_for_found) {
instance->common.code_last_found = instance->common.code_found;
instance->common.code_last_count_bit = instance->common.code_count_bit;
//check crc
uint64_t data_tmp = instance->common.code_last_found ^
(instance->common.code_last_found >> 8);
if(((data_tmp >> 40) & 0xF) == subghz_protocol_somfy_telis_crc(data_tmp)) {
if(instance->common.callback)
instance->common.callback(
(SubGhzProtocolCommon*)instance, instance->common.context);
}
}
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
manchester_advance(
instance->manchester_saved_state,
ManchesterEventReset,
&instance->manchester_saved_state,
NULL);
manchester_advance(
instance->manchester_saved_state,
ManchesterEventLongHigh,
&instance->manchester_saved_state,
NULL);
instance->common.parser_step = SomfyTelisDecoderStepReset;
} else {
instance->common.parser_step = SomfyTelisDecoderStepReset;
}
} else {
if(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta) {
event = ManchesterEventShortHigh;
} else if(DURATION_DIFF(duration, instance->common.te_long) < instance->common.te_delta) {
event = ManchesterEventLongHigh;
} else {
instance->common.parser_step = SomfyTelisDecoderStepReset;
}
}
if(event != ManchesterEventReset) {
bool data;
bool data_ok = manchester_advance(
instance->manchester_saved_state, event, &instance->manchester_saved_state, &data);
if(data_ok) {
instance->common.code_found = (instance->common.code_found << 1) | data;
instance->common.code_count_bit++;
}
}
break;
}
}
void subghz_protocol_somfy_telis_to_str(SubGhzProtocolSomfyTelis* instance, string_t output) {
subghz_protocol_somfy_telis_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"
"Key:0x%lX%08lX\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->common.serial,
instance->common.cnt,
subghz_protocol_somfy_telis_get_name_button(instance->common.btn));
}
void subghz_decoder_somfy_telis_to_load_protocol(SubGhzProtocolSomfyTelis* 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_somfy_telis_remote_controller(instance);
}
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