From 17dfb7d15225b2ccbd77e4f19da4ddebc2b428e6 Mon Sep 17 00:00:00 2001
From: Erik R Norell <erik.norell@taerk.ru>
Date: Fri, 7 Jan 2022 09:57:29 +0300
Subject: [PATCH] Touch on T-Echo to refresh e-ink screen

---
 src/configuration.h       |  4 ++++
 src/main.cpp              | 49 +++++++++++++++++++++++++++++++++++++++
 variants/t-echo/variant.h |  1 +
 3 files changed, 54 insertions(+)

diff --git a/src/configuration.h b/src/configuration.h
index 89fa106ff..57469bfd5 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -84,6 +84,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BUTTON_PIN_ALT PIN_BUTTON2
 #endif
 
+#ifdef PIN_BUTTON_TOUCH
+#define BUTTON_PIN_TOUCH PIN_BUTTON_TOUCH
+#endif
+
 // FIXME, use variant.h defs for all of this!!! (even on the ESP32 targets)
 #elif defined(CubeCell_BoardPlus)
 
diff --git a/src/main.cpp b/src/main.cpp
index 41d504e40..15085034d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -187,6 +187,9 @@ class ButtonThread : public OSThread
 #endif
 #ifdef BUTTON_PIN_ALT
     OneButton userButtonAlt;
+#endif
+#ifdef BUTTON_PIN_TOUCH
+    OneButton userButtonTouch;
 #endif
     static bool shutdown_on_long_stop;
 
@@ -222,6 +225,21 @@ class ButtonThread : public OSThread
         userButtonAlt.attachLongPressStop(userButtonPressedLongStop);
         wakeOnIrq(BUTTON_PIN_ALT, FALLING);
 #endif
+
+#ifdef BUTTON_PIN_TOUCH
+        userButtonTouch = OneButton(BUTTON_PIN_TOUCH, true, true);
+#ifdef INPUT_PULLUP_SENSE
+        // Some platforms (nrf52) have a SENSE variant which allows wake from sleep - override what OneButton did
+        pinMode(BUTTON_PIN_TOUCH, INPUT_PULLUP_SENSE);
+#endif
+        userButtonTouch.attachClick(touchPressed);
+        userButtonTouch.attachDuringLongPress(touchPressedLong);
+        userButtonTouch.attachDoubleClick(touchDoublePressed);
+        userButtonTouch.attachLongPressStart(touchPressedLongStart);
+        userButtonTouch.attachLongPressStop(touchPressedLongStop);
+        wakeOnIrq(BUTTON_PIN_TOUCH, FALLING);
+#endif
+
     }
 
   protected:
@@ -237,6 +255,10 @@ class ButtonThread : public OSThread
 #ifdef BUTTON_PIN_ALT
         userButtonAlt.tick();
         canSleep &= userButtonAlt.isIdle();
+#endif
+#ifdef BUTTON_PIN_TOUCH
+        userButtonTouch.tick();
+        canSleep &= userButtonTouch.isIdle();
 #endif
         // if (!canSleep) DEBUG_MSG("Supressing sleep!\n");
         // else DEBUG_MSG("sleep ok\n");
@@ -245,6 +267,33 @@ class ButtonThread : public OSThread
     }
 
   private:
+    static void touchPressed()
+    {        
+        screen->forceDisplay();
+        DEBUG_MSG("touch press!\n");       
+    }
+    static void touchDoublePressed()
+    {
+        DEBUG_MSG("touch double press!\n");       
+    }
+    static void touchPressedLong()
+    {
+        DEBUG_MSG("touch press long!\n");       
+    }
+    static void touchDoublePressedLong()
+    {
+        DEBUG_MSG("touch double pressed!\n");       
+    }
+    static void touchPressedLongStart()
+    {        
+        DEBUG_MSG("touch long press start!\n");       
+    }
+    static void touchPressedLongStop()
+    {       
+        DEBUG_MSG("touch long press stop!\n");       
+    }
+
+
     static void userButtonPressed()
     {
         // DEBUG_MSG("press!\n");
diff --git a/variants/t-echo/variant.h b/variants/t-echo/variant.h
index df57ee913..a1471c67b 100644
--- a/variants/t-echo/variant.h
+++ b/variants/t-echo/variant.h
@@ -120,6 +120,7 @@ extern "C" {
  */
 #define PIN_BUTTON1 (32 + 10)
 #define PIN_BUTTON2 (0 + 18) // 0.18 is labeled on the board as RESET but we configure it in the bootloader as a regular GPIO
+#define PIN_BUTTON_TOUCH (0 + 11) // 0.11 is the soft touch button on T-Echo
 
 /*
  * Analog pins