add support for nexus protocol to RCSwitch library

Nexus protocol is used by temperature and humidity sensor that operate at 433 MHz. It is used by various brands.
arendst · Aug 1, 2024 · 7f90759 · 7f90759
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commit 7f90759
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diff --git a/lib/lib_rf/rc-switch/src/RCSwitch.cpp b/lib/lib_rf/rc-switch/src/RCSwitch.cpp
@@ -151,8 +151,9 @@ static const RCSwitch::Protocol PROGMEM proto[] = {
   { 340,  0, { 0, 0 }, 1, {  14,  4 }, { 1,  2 }, { 2, 1 }, false,  0 },  // 33 (Dooya Control DC2708L)
   { 120,  0, { 0, 0 }, 1, {   1, 28 }, { 1,  3 }, { 3, 1 }, false,  0 },  // 34 DIGOO SD10 - so as to use this protocol RCSWITCH_SEPARATION_LIMIT must be set to 2600
   { 20,   0, { 0, 0 }, 1, { 239, 78 }, {20, 35 }, {35, 20}, false, 10000},// 35 Dooya 5-Channel blinds remote DC1603
-  { 250,  0, { 0, 0 }, 1, {  18,  6 }, { 1,  3 }, { 3, 1 }, false,  0 },   // 36 Dooya remote DC2700AC for Dooya DT82TV curtains motor
-  { 200,  0, { 0, 0 }, 0, {   0,  0 }, { 1,  3 }, { 3, 1} , false, 20}	  // 37 DEWENWILS Power Strip
+  { 250,  0, { 0, 0 }, 1, {  18,  6 }, { 1,  3 }, { 3, 1 }, false,  0 },  // 36 Dooya remote DC2700AC for Dooya DT82TV curtains motor
+  { 200,  0, { 0, 0 }, 0, {   0,  0 }, { 1,  3 }, { 3, 1 }, false, 20 },	// 37 DEWENWILS Power Strip
+  { 500,  0, { 0, 0 }, 1, {   0,  7 }, { 1,  2 }, { 1, 4 }, false,  0 },  // 38 temperature and humidity sensor, various brands, nexus protocol, 36 bits + start impulse
 };
 
 enum {

diff --git a/lib/lib_rf/rc-switch/src/RCSwitch.h b/lib/lib_rf/rc-switch/src/RCSwitch.h
@@ -57,15 +57,15 @@
 #endif
 
 // Number of maximum high/Low changes per packet.
-// We can handle up to (unsigned long) => 32 bit * 2 H/L changes per bit + 2 for sync
+// We can handle up to 36 bit * 2 H/L changes per bit + 2 for sync
 // Для keeloq нужно увеличить RCSWITCH_MAX_CHANGES до 23+1+66*2+1=157
-#define RCSWITCH_MAX_CHANGES 67        // default 67
+#define RCSWITCH_MAX_CHANGES 75        // default 75 - longest protocol that requires this buffer size is 38/nexus
 
 // separationLimit: minimum microseconds between received codes, closer codes are ignored.
 // according to discussion on issue #14 it might be more suitable to set the separation
 // limit to the same time as the 'low' part of the sync signal for the current protocol.
 // should be set to the minimum value of pulselength * the sync signal
-#define RCSWITCH_SEPARATION_LIMIT 4100
+#define RCSWITCH_SEPARATION_LIMIT (500*7)
 
 class RCSwitch {