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/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
 };