From 1355c792daa773b0890166cce328bea74cc4e4cc Mon Sep 17 00:00:00 2001
From: Richard Li <richard.li@ces.hk>
Date: Fri, 6 Oct 2023 22:42:37 +0800
Subject: [PATCH] Workaround for interrupt occurs when touch panel is idle.

---
 radio/src/targets/pl18/tp_cst340.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/radio/src/targets/pl18/tp_cst340.cpp b/radio/src/targets/pl18/tp_cst340.cpp
index 07a7ae5b575..b18453e09dc 100644
--- a/radio/src/targets/pl18/tp_cst340.cpp
+++ b/radio/src/targets/pl18/tp_cst340.cpp
@@ -376,9 +376,6 @@ static uint8_t cst340_TS_DetectTouch()
 {
   uint8_t nbTouch;
   uint8_t reg = TS_IO_Read(TOUCH_CST340_I2C_ADDRESS, CST340_FINGER1_REG);
-#if defined(DEBUG)
-  TRACE("cst340_TS_DetectTouch: reg=%d", reg);
-#endif  
   if( reg == 0x06 )
     nbTouch = 1;
   else
@@ -484,9 +481,24 @@ void handleTouch()
   }
 }
 
+static bool lastHasTouch = false;
 bool touchPanelEventOccured()
 {
-  return touchEventOccured;
+  bool result = touchEventOccured;
+  uint8_t hasTouch = false;
+  if (touchEventOccured) {
+    hasTouch = tc->detectTouch();
+    if (!hasTouch && !lastHasTouch) {
+      touchEventOccured = false;
+      result = false;
+    }
+    lastHasTouch = hasTouch;
+  }
+
+#if defined(DEBUG)
+  TRACE("TouchEvent: %d, %d, %d, %d", touchEventOccured, lastHasTouch, hasTouch, result);
+#endif
+  return result;      
 }
 
 TouchState touchPanelRead()