Add restaurant pager (EV1527-variant) to SubGhzD (#2998)

* Add restaurant pager protocol to SubGhzD receiver

EV1527-variant 25-bit OOK PWM decoder for restaurant pager
systems (JianTao JT-913 and similar). Decodes system ID,
pager address, and function code (buzz/sync).

* Show friendly pager details in SubGhzD view

firmware/application/apps/ui_subghzd.cpp

@@ -61,6 +61,19 @@ void SubGhzDRecentEntryDetailView::update_data() {
 
     if (entry_.data != 0) console.writeln("Data: " + to_string_hex(entry_.data));
 
+    if (entry_.sensorType == FPS_RESTAURANT_PAGER) {
+        uint8_t pager_addr = (entry_.data >> 5) & 0x0F;
+        uint8_t func_code = (entry_.data >> 1) & 0x0F;
+        console.writeln("Station: 0x" + to_string_hex(serial) + " (" + to_string_dec_uint(serial) + ")");
+        console.writeln("Pager: " + to_string_dec_uint(pager_addr));
+        if (func_code == 0x0D)
+            console.writeln("Action: Buzz");
+        else if (func_code == 0x0F)
+            console.writeln("Action: Sync");
+        else
+            console.writeln("Action: 0x" + to_string_hex(func_code));
+    }
+
     if (entry_.sensorType == FPS_KEELOQ) {
         console.writeln("Fix: " + to_string_hex(fix));
         console.writeln("Encrypted: " + to_string_hex(encrypted));
@@ -280,6 +293,8 @@ const char* SubGhzDView::getSensorTypeName(FPROTO_SUBGHZD_SENSOR type) {
             return "Marantec24";
         case FPS_HOLTEKHT6P20B:
             return "Holtek HT6P20B";
+        case FPS_RESTAURANT_PAGER:
+            return "Rest. Pager";
         case FPS_Invalid:
         default:
             return "Unknown";
@@ -306,7 +321,14 @@ void RecentEntriesTable<ui::SubGhzDRecentEntries>::draw(
     line.reserve(30);
 
     line = SubGhzDView::getSensorTypeName((FPROTO_SUBGHZD_SENSOR)entry.sensorType);
-    line = line + " " + to_string_hex(entry.data << 32);
+    if (entry.sensorType == FPS_RESTAURANT_PAGER) {
+        uint8_t pgr = (entry.data >> 5) & 0x0F;
+        uint8_t func = (entry.data >> 1) & 0x0F;
+        line += " P:" + to_string_dec_uint(pgr) + (func == 0x0D ? " Buzz" : func == 0x0F ? " Sync"
+                                                                                         : "");
+    } else {
+        line = line + " " + to_string_hex(entry.data << 32);
+    }
     line.resize(columns.at(0).second, ' ');
     std::string ageStr = to_string_dec_uint(entry.age);
     std::string bitsStr = to_string_dec_uint(entry.bits);
@@ -873,5 +895,12 @@ void SubGhzDRecentEntryDetailView::parseProtocol() {
         btn = (entry_.data >> 4) & 0xF;
         return;
     }
+
+    if (entry_.sensorType == FPS_RESTAURANT_PAGER) {
+        // 25-bit EV1527-variant: [sysid:16][pager:4][func:4][stop:1]
+        serial = (entry_.data >> 9) & 0xFFFF;  // System ID
+        // btn/cnt left as SD_NO values; friendly output in update_data()
+        return;
+    }
 }
 }  // namespace ui

firmware/baseband/fprotos/s-restaurant_pager.hpp

@@ -0,0 +1,75 @@
+
+#ifndef __FPROTO_RESTAURANT_PAGER_H__
+#define __FPROTO_RESTAURANT_PAGER_H__
+
+#include "subghzdbase.hpp"
+
+typedef enum : uint8_t {
+    RestaurantPagerDecoderStepReset = 0,
+    RestaurantPagerDecoderStepSaveDuration,
+    RestaurantPagerDecoderStepCheckDuration,
+} RestaurantPagerDecoderStep;
+
+class FProtoSubGhzDRestaurantPager : public FProtoSubGhzDBase {
+   public:
+    FProtoSubGhzDRestaurantPager() {
+        sensorType = FPS_RESTAURANT_PAGER;
+        te_short = 204;
+        te_long = 636;
+        te_delta = 100;
+        min_count_bit_for_found = 25;
+    }
+
+    void feed(bool level, uint32_t duration) {
+        switch (parser_step) {
+            case RestaurantPagerDecoderStepReset:
+                if ((!level) && (DURATION_DIFF(duration, te_short * 36) < te_delta * 36)) {
+                    // Found preamble
+                    parser_step = RestaurantPagerDecoderStepSaveDuration;
+                    decode_data = 0;
+                    decode_count_bit = 0;
+                }
+                break;
+            case RestaurantPagerDecoderStepSaveDuration:
+                if (level) {
+                    te_last = duration;
+                    parser_step = RestaurantPagerDecoderStepCheckDuration;
+                }
+                break;
+            case RestaurantPagerDecoderStepCheckDuration:
+                if (!level) {
+                    if (duration >= ((uint32_t)te_long * 2)) {
+                        parser_step = RestaurantPagerDecoderStepSaveDuration;
+                        if (decode_count_bit == min_count_bit_for_found) {
+                            // Skip all-ones preamble frames
+                            if ((decode_data >> 1) != 0xFFFFFF) {
+                                data_count_bit = decode_count_bit;
+                                if (callback) callback(this);
+                            }
+                        }
+                        decode_data = 0;
+                        decode_count_bit = 0;
+                        break;
+                    }
+
+                    if ((DURATION_DIFF(te_last, te_short) < te_delta) &&
+                        (DURATION_DIFF(duration, te_long) < te_delta * 3)) {
+                        subghz_protocol_blocks_add_bit(0);
+                        parser_step = RestaurantPagerDecoderStepSaveDuration;
+                    } else if (
+                        (DURATION_DIFF(te_last, te_long) < te_delta * 3) &&
+                        (DURATION_DIFF(duration, te_short) < te_delta)) {
+                        subghz_protocol_blocks_add_bit(1);
+                        parser_step = RestaurantPagerDecoderStepSaveDuration;
+                    } else {
+                        parser_step = RestaurantPagerDecoderStepReset;
+                    }
+                } else {
+                    parser_step = RestaurantPagerDecoderStepReset;
+                }
+                break;
+        }
+    }
+};
+
+#endif

firmware/baseband/fprotos/subghzdprotos.hpp

@@ -55,6 +55,7 @@ So include here the .hpp, and add a new element to the protos vector in the cons
 #include "s-marantec24.hpp"
 // GENIE FROM PR
 #include "s-holtek_ht6p20b.hpp"
+#include "s-restaurant_pager.hpp"
 
 #ifndef __FPROTO_PROTOLISTSGZ_H__
 #define __FPROTO_PROTOLISTSGZ_H__
@@ -109,6 +110,7 @@ class SubGhzDProtos : public FProtoListGeneral {
         protos[FPS_GANGQI] = new FProtoSubGhzDGangqi();
         protos[FPS_MARANTEC24] = new FProtoSubGhzDMarantec24();
         protos[FPS_HOLTEKHT6P20B] = new FProtoSubGhzDHoltekHt6p20b();
+        protos[FPS_RESTAURANT_PAGER] = new FProtoSubGhzDRestaurantPager();
 
         for (uint8_t i = 0; i < FPS_COUNT; ++i) {
             if (protos[i] != NULL) protos[i]->setCallback(callbackTarget);

firmware/baseband/fprotos/subghztypes.hpp

@@ -59,6 +59,7 @@ enum FPROTO_SUBGHZD_SENSOR : uint8_t {
     FPS_GANGQI,
     FPS_MARANTEC24,
     FPS_HOLTEKHT6P20B,
+    FPS_RESTAURANT_PAGER,
     FPS_COUNT
 };