Add virtual Buttons & Switches in Digtian driver (#18223)

* add support for virtual buttons or switches

* remove DINGTIAN key from SENSOR when using buttons-switches

tasmota/my_user_config.h

@@ -978,6 +978,11 @@
 //#define USE_HX711                                // Add support for HX711 load cell (+1k5 code)
 //  #define USE_HX711_GUI                          // Add optional web GUI to HX711 as scale (+1k8 code)
 
+//#define USE_DINGTIAN_RELAY                       // Add support for the Dingian board using 74'595 et 74'165 shift registers
+//  #define DINGTIAN_INPUTS_INVERTED               // Invert input states (Hi => OFF, Low => ON)
+//  #define DINGTIAN_USE_AS_BUTTON                 // Inputs as Tasmota's virtual Buttons
+//  #define DINGTIAN_USE_AS_SWITCH                 // Inputs as Tasmota's virtual Switches
+
 // Select none or only one of the below defines
 //#define USE_TX20_WIND_SENSOR                     // Add support for La Crosse TX20 anemometer (+2k6/0k8 code)
 //#define USE_TX23_WIND_SENSOR                     // Add support for La Crosse TX23 anemometer (+2k7/1k code)

tasmota/tasmota_xdrv_driver/xdrv_90_esp32_dingtian_relay.ino

@@ -22,6 +22,14 @@
 
 #define XDRV_90           90
 
+/********************************************************************************************************
+ * Check defines
+ */
+
+#if defined(DINGTIAN_USE_AS_BUTTON) && defined(DINGTIAN_USE_AS_SWITCH)
+#error DINGTIAN - Only one of DINGTIAN_USE_AS_BUTTON or DINGTIAN_USE_AS_SWITCH should be defined
+#endif
+
 /********************************************************************************************************
  * Global private data
  */
@@ -31,6 +39,7 @@ struct DINGTIAN_DATA {
   uint32_t    last_inputs;      // previous inputs state
   uint8_t     count;            // number of relay and input (8 * numver of shift registers)
   uint8_t     first;            // index of 1st Tasmota relay assigned to 1st Dingtian relays
+  int8_t      key_offset;       // index of virtual key
   // pins
   uint8_t     pin_clk, pin_sdi, pin_q7, pin_pl, pin_rck;
 } *Dingtian = nullptr;
@@ -63,7 +72,11 @@ uint32_t DingtianReadWrite(uint32_t outputs)
   digitalWrite(Dingtian->pin_rck, 1);    // rclk pulse to load '595 into output registers
   digitalWrite(Dingtian->pin_pl, 0);      // re-enable '595 ouputs
 
+#ifdef DINGTIAN_INPUTS_INVERTED
+  return ~inputs;
+#else
   return inputs;
+#endif
 }
 
 /********************************************************************************************************
@@ -98,16 +111,51 @@ void DingtianInit(void) {
       DINGTIAN_SET_OUTPUT(Dingtian->pin_rck, 0);
 
       Dingtian->first = TasmotaGlobal.devices_present;
+      Dingtian->key_offset = -1;
       UpdateDevicesPresent(Dingtian->count);
       AddLog(LOG_LEVEL_DEBUG, PSTR("DNGT: Dingtian relays: POWER%d to POWER%d"), Dingtian->first + 1, TasmotaGlobal.devices_present);
     }
   }
 }
 
+#if defined(DINGTIAN_USE_AS_BUTTON) || defined(DINGTIAN_USE_AS_SWITCH)
+bool DingtianAddKey(void) {
+  if (Dingtian->key_offset < 0) { 
+    Dingtian->key_offset = XdrvMailbox.index; 
+    #ifdef DINGTIAN_USE_AS_BUTTON
+    AddLog(LOG_LEVEL_DEBUG, PSTR("DNGT: Dingtian inputs: Button%d to Button%d"), Dingtian->key_offset + 1, Dingtian->key_offset + Dingtian->count);
+    #else
+    AddLog(LOG_LEVEL_DEBUG, PSTR("DNGT: Dingtian inputs: Switch%d to Switch%d"), Dingtian->key_offset + 1, Dingtian->key_offset + Dingtian->count);
+    #endif
+  }
+  uint32_t index = XdrvMailbox.index - Dingtian->key_offset;
+  if (index >= Dingtian->count) { 
+    return false; 
+  }
+  XdrvMailbox.index = 0;                      // Default is 0 - Button will also set invert
+  return true;
+}
+#endif
+
 /********************************************************************************************************
  * Driver operations
  */
 
+#if defined(DINGTIAN_USE_AS_BUTTON) || defined(DINGTIAN_USE_AS_SWITCH)
+void DingtianLoop()
+{
+  uint32_t inputs = DingtianReadWrite(Dingtian->outputs);
+   Dingtian->last_inputs = inputs;
+ 
+  for (int i = 0 ; i < Dingtian->count ; i++, inputs>>=1) {
+#ifdef DINGTIAN_USE_AS_BUTTON
+    ButtonSetVirtualPinState(Dingtian->key_offset +i, inputs &1);
+#else
+    SwitchSetVirtualPinState(Dingtian->key_offset +i, inputs &1);
+#endif
+  }
+}
+#else
 void DingtianLoop()
 {
   uint32_t inputs = DingtianReadWrite(Dingtian->outputs);
@@ -131,6 +179,7 @@ void DingtianLoop()
     }
   }
 }
+#endif
 
 void DingtianSetPower(void)
 {
@@ -146,9 +195,9 @@ void DingtianSetPower(void)
 
 const char HTTP_DINGTIAN_INPUTS[] PROGMEM = "{s}DINGTIAN " D_SENSOR_INPUT "%d.." D_SENSOR_INPUT "%d{m}%s{e}";
 
-void DingtianShow(bool json)
+#if !defined(DINGTIAN_USE_AS_BUTTON) && !defined(DINGTIAN_USE_AS_SWITCH)
+void DingtianJsonAppend(void)
 {
-  if (json) {
   bool first_done = false;
   ResponseAppend_P(PSTR(",\"DINGTIAN\":{"));
   for (int i = 0 ; i < Dingtian->count ; i++) {
@@ -158,8 +207,11 @@ void DingtianShow(bool json)
   }
   ResponseAppend_P(PSTR("}"));
 }
+#endif
+
 #ifdef USE_WEBSERVER
-  else {
+void DingtianWebSensor(void)
+{
   char input_str[9];
   for (int block_input = 0 ; block_input < Dingtian->count ; block_input += 8 ) {
     for (int i = 0 ; i < 8 ; i++ )
@@ -169,7 +221,6 @@ void DingtianShow(bool json)
   }
 }
 #endif
-}
 
 
 /*********************************************************************************************\
@@ -179,7 +230,7 @@ void DingtianShow(bool json)
 bool Xdrv90(uint32_t function) {
   bool result = false;
 
-  if (FUNC_PRE_INIT == function) {
+  if (FUNC_SETUP_RING2 == function) {
     DingtianInit();
   } else if (Dingtian) {
     switch (function) {
@@ -190,14 +241,26 @@ bool Xdrv90(uint32_t function) {
       //case FUNC_EVERY_250_MSECOND:
         DingtianLoop();
         break;
+#if !defined(DINGTIAN_USE_AS_BUTTON) && !defined(DINGTIAN_USE_AS_SWITCH)
       case FUNC_JSON_APPEND:
-        DingtianShow(1);
+        DingtianJsonAppend();
         break;
+#endif
 #ifdef USE_WEBSERVER
       case FUNC_WEB_SENSOR:
-        DingtianShow(0);
+        DingtianWebSensor();
         break;
 #endif  // USE_WEBSERVER
+#ifdef DINGTIAN_USE_AS_BUTTON
+      case FUNC_ADD_BUTTON:
+        result = DingtianAddKey();
+        break;
+#endif
+#ifdef DINGTIAN_USE_AS_SWITCH
+      case FUNC_ADD_SWITCH:
+        result = DingtianAddKey();
+        break;
+#endif
     }
   }
   return result;