Add command `SetOption152 0/1`

Add command ``SetOption152 0/1`` to select two (default) or one pin bistable relay control (#18386)

CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 ## [12.5.0.1]
 ### Added
 - Matter sensors Humidity, Pressure, Illuminance; optimize memory (#18441)
+- Command ``SetOption152 0/1`` to select two (default) or one pin bistable relay control (#18386)
 
 ### Breaking Changed
 

RELEASENOTES.md

@@ -112,6 +112,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
 
 ## Changelog v12.5.0.1
 ### Added
+- Command ``SetOption152 0/1`` to select two (default) or one pin bistable relay control [#18386](https://github.com/arendst/Tasmota/issues/18386)
 - Matter sensors Humidity, Pressure, Illuminance [#18441](https://github.com/arendst/Tasmota/issues/18441)
 
 ### Breaking Changed

tasmota/include/tasmota_types.h

@@ -185,7 +185,7 @@ typedef union {                            // Restricted by MISRA-C Rule 18.4 bu
     uint32_t dns_ipv6_priority : 1;        // bit 3  (v12.2.0.6) - SetOption149 - (Wifi) prefer IPv6 DNS resolution to IPv4 address when available. Requires `#define USE_IPV6`
     uint32_t no_voltage_common : 1;        // bit 4  (v12.3.1.5) - SetOption150 - (Energy) Force no voltage/frequency common
     uint32_t matter_enabled : 1;           // bit 5  (v12.3.1.5) - SetOption151 - (Matter) Enable Matter protocol over Wifi
-    uint32_t spare06 : 1;                  // bit 6
+    uint32_t bistable_single_pin : 1;      // bit 6  (v12.5.0.1) - SetOption152 - (Power) Switch between two (0) or one (1) pin bistable relay control
     uint32_t spare07 : 1;                  // bit 7
     uint32_t spare08 : 1;                  // bit 8
     uint32_t spare09 : 1;                  // bit 9

tasmota/tasmota.ino

@@ -254,6 +254,7 @@ struct TasmotaGlobal_t {
   void *log_buffer_mutex;                   // Control access to log buffer
 
   power_t power;                            // Current copy of Settings->power
+  power_t power_bistable;                   // Current state of single pin bistable power
   power_t rel_inverted;                     // Relay inverted flag (1 = (0 = On, 1 = Off))
   power_t rel_bistable;                     // Relay bistable bitmap
   power_t last_power;                       // Last power set state
@@ -430,6 +431,7 @@ void setup(void) {
   TasmotaGlobal.global_state.data = 0xF;  // Init global state (wifi_down, mqtt_down) to solve possible network issues
   TasmotaGlobal.enable_logging = 1;
   TasmotaGlobal.seriallog_level = LOG_LEVEL_INFO;  // Allow specific serial messages until config loaded
+  TasmotaGlobal.power_bistable = 0x80000000;
 
   RtcRebootLoad();
   if (!RtcRebootValid()) {

tasmota/tasmota_support/support_command.ino

@@ -1472,6 +1472,7 @@ void CmndSetoptionBase(bool indexed) {
             bitWrite(Settings->flag6.data, pindex, XdrvMailbox.payload);
             switch (pindex) {
               case 5:                     // SetOption151 - Matter enabled
+              case 6:                     // SetOption152 - (Power) Use single pin bistable
                 TasmotaGlobal.restart_flag = 2;
                 break;
             }

tasmota/tasmota_support/support_tasmota.ino

@@ -309,6 +309,7 @@ void SetDevicePower(power_t rpower, uint32_t source) {
   else {
     uint32_t port = 0;
     uint32_t port_next;
+    power_t bistable = 0;
 
     ZeroCrossMomentStart();
 
@@ -316,12 +317,25 @@ void SetDevicePower(power_t rpower, uint32_t source) {
       power_t state = rpower &1;
 
       port_next = 1;                              // Select next relay
+      bool update = true;
       if (bitRead(TasmotaGlobal.rel_bistable, port)) {
+        if (Settings->flag6.bistable_single_pin) {  // SetOption152 - (Power) Use single pin bistable
+          if (0x80000000 == TasmotaGlobal.power_bistable) {
+            TasmotaGlobal.power_bistable = TasmotaGlobal.power;  // Init last known state
+          }
+          update = (bitRead(TasmotaGlobal.power_bistable, port) != state);
+          if (update) {
+            bitWrite(TasmotaGlobal.power_bistable, port, state);
+            bitSet(bistable, port);
+          }
+
+        } else {
           if (!state) { port_next = 2; }          // Skip highest relay
           port += state;                          // Relay<lowest> = Off, Relay<highest> = On
+        }
         state = 1;                                // Set pulse
       }
-      if (i < MAX_RELAYS) {
+      if (update && (i < MAX_RELAYS)) {
         DigitalWrite(GPIO_REL1, port, bitRead(TasmotaGlobal.rel_inverted, port) ? !state : state);
       }
       port += port_next;                          // Select next relay
@@ -335,6 +349,11 @@ void SetDevicePower(power_t rpower, uint32_t source) {
       delay(Settings->param[P_BISTABLE_PULSE]);   // SetOption45 - Keep energized for about 5 x operation time
       for (uint32_t i = 0; i < port; i++) {       // Reset up to detected amount of ports
         if (bitRead(TasmotaGlobal.rel_bistable, i)) {
+          if (Settings->flag6.bistable_single_pin) {  // SetOption152 - (Power) Use single pin bistable
+            if (!bitRead(bistable, i)) {
+              continue;
+            }
+          }
           DigitalWrite(GPIO_REL1, i, bitRead(TasmotaGlobal.rel_inverted, i) ? 1 : 0);
         }
       }
@@ -2218,8 +2237,12 @@ void GpioInit(void)
         if (i &1) { TasmotaGlobal.devices_present--; }
       }
 #endif  // ESP8266
+      if (!Settings->flag6.bistable_single_pin) {  // SetOption152 - (Power) Use single pin bistable
         if (bitRead(TasmotaGlobal.rel_bistable, i)) {
-        if (bi_device &1) { TasmotaGlobal.devices_present--; }
+          if (bi_device &1) {
+            TasmotaGlobal.devices_present--;
+          }
+        }
         bi_device++;
       }
     }

tools/decode-status.py

@@ -207,7 +207,8 @@ a_setoption = [[
     "(Wifi) prefer IPv6 DNS resolution to IPv4 address when available. Requires `#define USE_IPV6`",
     "(Energy) Force no voltage/frequency common",
     "(Matter) Enable Matter protocol over Wifi",
-    "","",
+    "(Power) Switch between two (0) or one (1) pin bistable relay control",
+    "",
     "","","","",
     "","","","",
     "","","","",
@@ -324,7 +325,7 @@ else:
         obj = json.load(fp)
 
 def StartDecode():
-    print ("\n*** decode-status.py v12.4.0.5 by Theo Arends and Jacek Ziolkowski ***")
+    print ("\n*** decode-status.py v12.5.0.1 by Theo Arends and Jacek Ziolkowski ***")
 
 #    print("Decoding\n{}".format(obj))