Add rotary encoder support

- Add rotary encoder support for light dimmer and optional color temperature if button1 still pressed (#8670)
- Fix Mi Desk Lamp brightness control (#8748)

RELEASENOTES.md

@@ -91,3 +91,4 @@ The following binary downloads have been compiled with ESP8266/Arduino library c
 - Add support for single wire LMT01 temperature Sensor by justifiably (#8713)
 - Add compile time interlock parameters (#8759)
 - Add compile time user template (#8766)
+- Add rotary encoder support for light dimmer and optional color temperature if button1 still pressed (#8670)

tasmota/CHANGELOG.md

@@ -8,6 +8,7 @@
 - Add support for single wire LMT01 temperature Sensor by justifiably (#8713)
 - Add compile time interlock parameters (#8759)
 - Add compile time user template (#8766)
+- Add rotary encoder support for light dimmer and optional color temperature if button1 still pressed (#8670)
 - Fix exception or watchdog on rule re-entry (#8757)
 - Change ESP32 USER GPIO template representation decreasing template message size
 - Change define USE_TASMOTA_SLAVE into USE_TASMOTA_CLIENT

tasmota/my_user_config.h

@@ -429,7 +429,7 @@
 //  #define SUPPORT_MQTT_EVENT                     // Support trigger event with MQTT subscriptions (+3k5 code)
 
 // -- Optional modules ----------------------------
-//#define ROTARY_V1                                // Add support for MI Desk Lamp
+#define ROTARY_V1                                // Add support for Rotary Encoder as used in MI Desk Lamp (+0k8 code)
 #define USE_SONOFF_RF                            // Add support for Sonoff Rf Bridge (+3k2 code)
   #define USE_RF_FLASH                           // Add support for flashing the EFM8BB1 chip on the Sonoff RF Bridge. C2CK must be connected to GPIO4, C2D to GPIO5 on the PCB (+2k7 code)
 #define USE_SONOFF_SC                            // Add support for Sonoff Sc (+1k1 code)

tasmota/support_rotary.ino

@@ -18,7 +18,6 @@
 */
 
 #ifdef USE_LIGHT
-//#define ROTARY_V1
 #ifdef ROTARY_V1
 /*********************************************************************************************\
  * Rotary support
@@ -36,18 +35,13 @@ struct ROTARY {
 
 /********************************************************************************************/
 
-#ifndef ARDUINO_ESP8266_RELEASE_2_3_0      // Fix core 2.5.x ISR not in IRAM Exception
 void update_rotary(void) ICACHE_RAM_ATTR;
-#endif  // ARDUINO_ESP8266_RELEASE_2_3_0
+void update_rotary(void) {
+  if (Rotary.busy || !LightPowerIRAM()) { return; }
 
-void update_rotary(void)
-{
-  if (MI_DESK_LAMP == my_module_type) {
-    if (LightPowerIRAM() && !Rotary.busy) {
   /*
   * https://github.com/PaulStoffregen/Encoder/blob/master/Encoder.h
   */
-
   uint8_t s = Rotary.state & 3;
   if (digitalRead(Pin(GPIO_ROT1A))) { s |= 4; }
   if (digitalRead(Pin(GPIO_ROT1B))) { s |= 8; }
@@ -64,21 +58,17 @@ void update_rotary(void)
       Rotary.position = Rotary.position - 2; break;
   }
   Rotary.state = (s >> 2);
-    }
-  }
 }
 
-bool RotaryButtonPressed(void)
-{
-  if ((MI_DESK_LAMP == my_module_type) && (Rotary.changed) && LightPower()) {
+bool RotaryButtonPressed(void) {
+  if (Rotary.changed && LightPower()) {
     Rotary.changed = 0;                    // Color temp changed, no need to turn of the light
     return true;
   }
   return false;
 }
 
-void RotaryInit(void)
-{
+void RotaryInit(void) {
   Rotary.present = 0;
   if (PinUsed(GPIO_ROT1A) && PinUsed(GPIO_ROT1B)) {
     Rotary.present++;
@@ -93,54 +83,27 @@ void RotaryInit(void)
  * Rotary handler
 \*********************************************************************************************/
 
-void RotaryHandler(void)
-{
+void RotaryHandler(void) {
   if (Rotary.last_position != Rotary.position) {
     Rotary.busy = true;
     int rotary_position = Rotary.position - Rotary.last_position;
 
-    if (MI_DESK_LAMP == my_module_type) { // Mi Desk lamp
-      if (Button.hold_timer[0]) {
+    if (Button.hold_timer[0]) {  // Button1 is pressed: set color temperature
+//      AddLog_P2(LOG_LEVEL_DEBUG, PSTR("ROT: " D_CMND_COLORTEMPERATURE " %d"), rotary_position);
       Rotary.changed = 1;
-        // button1 is pressed: set color temperature
-        int16_t t = LightGetColorTemp();
-        t = t + ((rotary_position) * 4);
-        if (t < 153) {
-          t = 153;
-        }
-        if (t > 500) {
-          t = 500;
-        }
-        DEBUG_CORE_LOG(PSTR("ROT: " D_CMND_COLORTEMPERATURE " %d"), rotary_position);
-        LightSetColorTemp((uint16_t)t);
-
-//        char scmnd[20];
-//        snprintf_P(scmnd, sizeof(scmnd), PSTR(D_CMND_COLORTEMPERATURE " %d"), t);
-//        ExecuteCommand(scmnd, SRC_SWITCH);
+      LightColorTempOffset(rotary_position * 4);
     } else {
-        int8_t d = Settings.light_dimmer;
-        d = d + rotary_position;
-        if (d < 1) {
-          d = 1;
+//      AddLog_P2(LOG_LEVEL_DEBUG, PSTR("ROT: " D_CMND_DIMMER " %d"), rotary_position);
+      LightDimmerOffset(rotary_position);
     }
-        if (d > 100) {
-          d = 100;
-        }
-        DEBUG_CORE_LOG(PSTR("ROT: " D_CMND_DIMMER " %d"), rotary_position);
 
-        char scmnd[20];
-        snprintf_P(scmnd, sizeof(scmnd), PSTR(D_CMND_DIMMER "0 %d"), d);
-        ExecuteCommand(scmnd, SRC_SWITCH);
-      }
-    }
     Rotary.last_position = 128;
     Rotary.position = 128;
     Rotary.busy = false;
   }
 }
 
-void RotaryLoop(void)
-{
+void RotaryLoop(void) {
   if (Rotary.present) {
     if (TimeReached(Rotary.debounce)) {
       SetNextTimeInterval(Rotary.debounce, Settings.button_debounce);  // Using button_debounce setting for this as well

tasmota/tasmota_configurations.h

@@ -33,7 +33,7 @@
 #undef USE_DISCOVERY                             // Disable mDNS (+8k code or +23.5k code with core 2_5_x, +0.3k mem)
 
 // -- Optional modules ----------------------------
-//#define ROTARY_V1                                // Add support for MI Desk Lamp
+#define ROTARY_V1                                // Add support for Rotary Encoder as used in MI Desk Lamp
 #define USE_SONOFF_RF                            // Add support for Sonoff Rf Bridge (+3k2 code)
   #define USE_RF_FLASH                           // Add support for flashing the EFM8BB1 chip on the Sonoff RF Bridge. C2CK must be connected to GPIO4, C2D to GPIO5 on the PCB (+2k7 code)
 #define USE_SONOFF_SC                            // Add support for Sonoff Sc (+1k1 code)

tasmota/xdrv_04_light.ino

@@ -1478,12 +1478,22 @@ void LightSetBri(uint8_t device, uint8_t bri) {
   }
 }
 
+void LightColorTempOffset(int32_t offset) {
+  int32_t ct = LightGetColorTemp();
+  if (0 == ct) { return; }  // CT not supported
+  ct += offset;
+  if (ct < CT_MIN) { ct = CT_MIN; }
+  else if (ct > CT_MAX) { ct = CT_MAX; }
+
+  LightSetColorTemp(ct);
+}
+
 void LightSetColorTemp(uint16_t ct)
 {
 /* Color Temperature (https://developers.meethue.com/documentation/core-concepts)
  *
- * ct = 153 = 6500K = Cold = CCWW = FF00
- * ct = 600 = 2000K = Warm = CCWW = 00FF
+ * ct = 153 mirek = 6500K = Cold = CCWW = FF00
+ * ct = 500 mirek = 2000K = Warm = CCWW = 00FF
  */
   // don't set CT if not supported
   if ((LST_COLDWARM != Light.subtype) && (LST_RGBCW != Light.subtype)) {
@@ -2745,6 +2755,16 @@ void CmndColorTemperature(void)
   }
 }
 
+void LightDimmerOffset(int32_t offset) {
+  int32_t dimmer = light_state.getDimmer() + offset;
+  if (dimmer < 1) { dimmer = 1; }
+  if (dimmer > 100) { dimmer = 100; }
+
+  XdrvMailbox.index = 0;
+  XdrvMailbox.payload = dimmer;
+  CmndDimmer();
+}
+
 void CmndDimmer(void)
 {
   // Dimmer         - Show current Dimmer state