Add support for analog buttons

Add support for analog buttons indexed within standard button range

RELEASENOTES.md

@@ -83,3 +83,4 @@ The attached binaries can also be downloaded from http://ota.tasmota.com/tasmota
 - Add support for inverted NeoPixelBus data line by enabling ``#define USE_WS2812_INVERTED`` (#8988)
 - Add PWM dimmer color/trigger on tap, SO88 led, DGR WITH_LOCAL flag by Paul Diem (#9474)
 - Add support for stateful ACs using ``StateMode`` in tasmota-ir.bin by Arik Yavilevich (#9472)
+- Add support for analog buttons indexed within standard button range

tasmota/CHANGELOG.md

@@ -25,6 +25,7 @@
 - Add PWM dimmer color/trigger on tap, SO88 led, DGR WITH_LOCAL flag by Paul Diem (#9474)
 - Add support for stateful ACs using ``StateMode`` in tasmota-ir.bin by Arik Yavilevich (#9472)
 - Add Zigbee ``ZbData`` command for better support of device specific data
+- Add support for analog buttons indexed within standard button range
 
 ## Released
 

tasmota/support_button.ino

@@ -49,7 +49,6 @@ struct BUTTON {
   uint8_t touch_hits[MAX_KEYS] = { 0 };      // Hits in a row to filter out noise
 #endif // ESP32
   uint8_t present = 0;                       // Number of buttons found flag
-  uint8_t adc = 99;                          // ADC0 button number
 } Button;
 
 #ifdef ESP32
@@ -90,14 +89,11 @@ void ButtonInit(void)
       Button.present++;
       pinMode(Pin(GPIO_KEY1, i), bitRead(Button.no_pullup_mask, i) ? INPUT : ((16 == Pin(GPIO_KEY1, i)) ? INPUT_PULLDOWN_16 : INPUT_PULLUP));
     }
-#ifdef ESP8266
+#ifdef USE_ADC
-#ifndef USE_ADC_VCC
+    else if (PinUsed(GPIO_ADC_BUTTON, i) || PinUsed(GPIO_ADC_BUTTON_INV, i)) {
-    else if ((99 == Button.adc) && AdcButtonPresent(0)) {
       Button.present++;
-      Button.adc = i;
     }
-#endif  // USE_ADC_VCC
+#endif  // USE_ADC
-#endif  // ESP8266
   }
 }
 
@@ -157,22 +153,11 @@ void ButtonHandler(void)
         }
         Button.dual_code = 0;
       }
-    }
+    } else
-    else {
+#endif  // ESP8266
-      if (PinUsed(GPIO_KEY1, button_index)) {
-        button_present = 1;
-        button = (digitalRead(Pin(GPIO_KEY1, button_index)) != bitRead(Button.inverted_mask, button_index));
-      }
-    }
-#ifndef USE_ADC_VCC
-    if (Button.adc == button_index) {
-      button_present = 1;
-      button = AdcGetButton(0);
-    }
-#endif  // USE_ADC_VCC
-#else  // ESP32
     if (PinUsed(GPIO_KEY1, button_index)) {
       button_present = 1;
+#ifdef ESP32
       if (bitRead(Button.touch_mask, button_index)) {          // Touch
         uint32_t _value = touchRead(Pin(GPIO_KEY1, button_index));
         button = NOT_PRESSED;
@@ -192,11 +177,22 @@ void ButtonHandler(void)
         if (bitRead(TOUCH_BUTTON.calibration, button_index+1)) {
           AddLog_P2(LOG_LEVEL_INFO, PSTR("PLOT: %u, %u, %u,"), button_index+1, _value, Button.touch_hits[button_index]);  // Button number (1..4), value, continuous hits under threshold
         }
-      } else {                                                 // Normal button
+      } else
+#endif  // ESP32
+      {                                                 // Normal button
         button = (digitalRead(Pin(GPIO_KEY1, button_index)) != bitRead(Button.inverted_mask, button_index));
       }
     }
-#endif  // ESP8266 or ESP32
+#ifdef USE_ADC
+    else if (PinUsed(GPIO_ADC_BUTTON, button_index)) {
+      button_present = 1;
+      button = AdcGetButton(Pin(GPIO_ADC_BUTTON, button_index));
+    }
+    else if (PinUsed(GPIO_ADC_BUTTON_INV, button_index)) {
+      button_present = 1;
+      button = AdcGetButton(Pin(GPIO_ADC_BUTTON_INV, button_index));
+    }
+#endif  // USE_ADC
     if (button_present) {
       XdrvMailbox.index = button_index;
       XdrvMailbox.payload = button;

tasmota/tasmota_template.h

@@ -650,8 +650,8 @@ const uint16_t kGpioNiceList[] PROGMEM = {
   AGPIO(GPIO_ADC_INPUT) + MAX_ADCS,       // Analog inputs
   AGPIO(GPIO_ADC_TEMP) + MAX_ADCS,        // Thermistor
   AGPIO(GPIO_ADC_LIGHT) + MAX_ADCS,       // Light sensor
-  AGPIO(GPIO_ADC_BUTTON) + MAX_ADCS,      // Button
+  AGPIO(GPIO_ADC_BUTTON) + MAX_KEYS,      // Button
-  AGPIO(GPIO_ADC_BUTTON_INV) + MAX_ADCS,
+  AGPIO(GPIO_ADC_BUTTON_INV) + MAX_KEYS,
   AGPIO(GPIO_ADC_RANGE) + MAX_ADCS,       // Range
   AGPIO(GPIO_ADC_CT_POWER) + MAX_ADCS,    // Current
   AGPIO(GPIO_ADC_JOY) + MAX_ADCS,         // Joystick
@@ -668,8 +668,8 @@ const uint16_t kAdcNiceList[] PROGMEM = {
   AGPIO(GPIO_ADC_INPUT),                  // Analog inputs
   AGPIO(GPIO_ADC_TEMP),                   // Thermistor
   AGPIO(GPIO_ADC_LIGHT),                  // Light sensor
-  AGPIO(GPIO_ADC_BUTTON),                 // Button
+  AGPIO(GPIO_ADC_BUTTON) + MAX_KEYS,      // Button
-  AGPIO(GPIO_ADC_BUTTON_INV),
+  AGPIO(GPIO_ADC_BUTTON_INV) + MAX_KEYS,
   AGPIO(GPIO_ADC_RANGE),                  // Range
   AGPIO(GPIO_ADC_CT_POWER),               // Current
   AGPIO(GPIO_ADC_JOY),                    // Joystick

tasmota/xdrv_01_webserver.ino

@@ -477,6 +477,7 @@ const char HTTP_SCRIPT_TEMPLATE2[] PROGMEM =
 const char HTTP_SCRIPT_TEMPLATE3[] PROGMEM =
     "\";"
     "sk(g[13]," STR(ADC0_PIN) ");";       // Set ADC0
+
 const char HTTP_SCRIPT_TEMPLATE4[] PROGMEM =
     "g=o.shift();"                        // FLAG
     "for(i=0;i<" STR(GPIO_FLAG_USED) ";i++){"
@@ -1800,13 +1801,23 @@ void HandleTemplateConfiguration(void)
       first_done = true;
     }
   }
+#ifdef ESP8266
+  for (uint32_t i = 0; i < ARRAY_SIZE(kAdcNiceList); i++) {  // hs=[36,68,100,132,168,200,232,264,292,324,356,388,421,453];
+    uint32_t midx = pgm_read_word(kAdcNiceList + i);
+    if (midx & 0x001F) {
+      if (first_done) { WSContentSend_P(PSTR(",")); }
+      WSContentSend_P(PSTR("%d"), midx);
+      first_done = true;
+    }
+  }
+#endif
   WSContentSend_P(PSTR("];"));
 
   WSContentSend_P(HTTP_SCRIPT_TEMPLATE2);
 
 #ifdef ESP8266
   WSContentSend_P(PSTR("os=\""));
-  for (uint32_t i = 0; i < ARRAY_SIZE(kAdcNiceList); i++) {                // FLAG: }2'0'>None}3}2'17'>Analog}3...
+  for (uint32_t i = 0; i < ARRAY_SIZE(kAdcNiceList); i++) {    // GPIO: }2'0'>None}3}2'17'>Analog}3...
     if (1 == i) {
       WSContentSend_P(HTTP_MODULE_TEMPLATE_REPLACE_NO_INDEX, AGPIO(GPIO_USER), D_SENSOR_USER);  // }2'15'>User}3
     }

tasmota/xsns_02_analog.ino

@@ -24,8 +24,15 @@
 
 #define XSNS_02                       2
 
+#ifdef ESP8266
+#define ANALOG_RESOLUTION             10               // 12 = 4095, 11 = 2047, 10 = 1023
+#define ANALOG_RANGE                  1023             // 4095 = 12, 2047 = 11, 1023 = 10
+#else  // ESP32
+#undef ANALOG_RESOLUTION
 #define ANALOG_RESOLUTION             12               // 12 = 4095, 11 = 2047, 10 = 1023
+#undef ANALOG_RANGE
 #define ANALOG_RANGE                  4095             // 4095 = 12, 2047 = 11, 1023 = 10
+#endif  // ESP8266 or ESP32
 
 #define TO_CELSIUS(x) ((x) - 273.15)
 #define TO_KELVIN(x) ((x) + 273.15)
@@ -64,6 +71,17 @@
 
 #define CT_FLAG_ENERGY_RESET          (1 << 0)         // Reset energy total
 
+// Buttons
+//        ---- Inverted
+// 3V3 ---|  |----|
+//                |
+// 3V3 --- R1 ----|--- R1 --- Gnd
+//                |
+//                |---|  |--- Gnd
+//                |   ----
+//               ADC
+#define ANALOG_BUTTON                 128              // Add resistor tolerance
+
 // Odroid joysticks
 //        ---- Up
 // 3V3 ---|  |------------
@@ -154,6 +172,7 @@ void AdcInitParams(uint8_t idx) {
 }
 
 void AdcAttach(uint8_t pin, uint8_t type) {
+  if (Adcs.present == MAX_ADCS) { return; }
   Adc[Adcs.present].pin = pin;
   if (adcAttachPin(Adc[Adcs.present].pin)) {
     Adc[Adcs.present].type = type;
@@ -174,12 +193,6 @@ void AdcInit(void) {
     if (PinUsed(GPIO_ADC_LIGHT, i)) {
       AdcAttach(Pin(GPIO_ADC_LIGHT, i), ADC_LIGHT);
     }
-    if (PinUsed(GPIO_ADC_BUTTON, i)) {
-      AdcAttach(Pin(GPIO_ADC_BUTTON, i), ADC_BUTTON);
-    }
-    if (PinUsed(GPIO_ADC_BUTTON_INV, i)) {
-      AdcAttach(Pin(GPIO_ADC_BUTTON_INV, i), ADC_BUTTON_INV);
-    }
     if (PinUsed(GPIO_ADC_RANGE, i)) {
       AdcAttach(Pin(GPIO_ADC_RANGE, i), ADC_RANGE);
     }
@@ -190,6 +203,15 @@ void AdcInit(void) {
       AdcAttach(Pin(GPIO_ADC_JOY, i), ADC_JOY);
     }
   }
+  for (uint32_t i = 0; i < MAX_KEYS; i++) {
+    if (PinUsed(GPIO_ADC_BUTTON, i)) {
+      AdcAttach(Pin(GPIO_ADC_BUTTON, i), ADC_BUTTON);
+    }
+    else if (PinUsed(GPIO_ADC_BUTTON_INV, i)) {
+      AdcAttach(Pin(GPIO_ADC_BUTTON_INV, i), ADC_BUTTON_INV);
+    }
+  }
+
   if (Adcs.present) {
 #ifdef ESP32
     analogSetClockDiv(1);               // Default 1
@@ -253,17 +275,18 @@ void AdcEvery250ms(void) {
 }
 #endif  // USE_RULES
 
-bool AdcButtonPresent(uint32_t idx) {
+uint8_t AdcGetButton(uint32_t pin) {
-  return ((ADC_BUTTON == Adc[idx].type) || (ADC_BUTTON_INV == Adc[idx].type));
+  for (uint32_t idx = 0; idx < Adcs.present; idx++) {
-}
+    if (Adc[idx].pin == pin) {
-
+      if (ADC_BUTTON_INV == Adc[idx].type) {
-uint8_t AdcGetButton(uint32_t idx) {
+        return (AdcRead(Adc[idx].pin, 1) < ANALOG_BUTTON);
-  if (ADC_BUTTON_INV == Adc[idx].type) {
+      }
-    return (AdcRead(Adc[idx].pin, 1) < 128);
+      else if (ADC_BUTTON == Adc[idx].type) {
-  }
+        return (AdcRead(Adc[idx].pin, 1) > ANALOG_BUTTON);
-  else if (ADC_BUTTON == Adc[idx].type) {
+      }
-    return (AdcRead(Adc[idx].pin, 1) > 128);
+    }
   }
+  return 0;
 }
 
 uint16_t AdcGetLux(uint32_t idx) {