fix(touch): Update example and fix config

Author: P-R-O-C-H-Y

cores/esp32/esp32-hal-touch-ng.c

@@ -14,7 +14,6 @@
 #include "soc/soc_caps.h"
 
 #if SOC_TOUCH_SENSOR_SUPPORTED
-//#if SOC_TOUCH_SENSOR_VERSION == 3  // ESP32P4 for now
 
 #include "esp32-hal-touch-ng.h"
 #include "esp32-hal-periman.h"
@@ -228,7 +227,7 @@ static void __touchInit() {
 #elif SOC_TOUCH_SENSOR_VERSION == 2 // ESP32S2, ESP32S3
   touch_sensor_sample_config_t single_sample_cfg = TOUCH_SENSOR_V2_DEFAULT_SAMPLE_CONFIG(_duration_ms, _volt_low, _volt_high);
 #elif SOC_TOUCH_SENSOR_VERSION == 3 // ESP32P4
-  touch_sensor_sample_config_t single_sample_cfg = TOUCH_SENSOR_V3_DEFAULT_SAMPLE_CONFIG(_sample_num, _div_num, _coarse_freq_tune, _fine_freq_tune);
+  touch_sensor_sample_config_t single_sample_cfg = TOUCH_SENSOR_V3_DEFAULT_SAMPLE_CONFIG(_div_num, _coarse_freq_tune, _fine_freq_tune);
 #endif
   touch_sensor_sample_config_t sample_cfg[_sample_num] = {};
   sample_cfg[0] = single_sample_cfg;
@@ -532,5 +531,4 @@ extern void touchAttachInterrupt(uint8_t, voidFuncPtr, touch_value_t) __attribut
 extern void touchAttachInterruptArg(uint8_t, voidArgFuncPtr, void *, touch_value_t) __attribute__((weak, alias("__touchAttachArgsInterrupt")));
 extern void touchDetachInterrupt(uint8_t) __attribute__((weak, alias("__touchDettachInterrupt")));
 
-//#endif /* SOC_TOUCH_SENSOR_VERSION == 3 */
 #endif /* SOC_TOUCH_SENSOR_SUPPORTED */

libraries/ESP32/examples/Touch/TouchInterrupt/TouchInterrupt.ino

@@ -3,11 +3,7 @@ This is an example how to use Touch Intrrerupts
 The bigger the threshold, the more sensible is the touch
 */
 
-#if CONFIG_IDF_TARGET_ESP32P4
-int threshold = 0;  // when 0 is used, the benchmarked value will be used
-#else
-int threshold = 40;
-#endif
+int threshold = 0;  // if 0 is used, benchmark value is used. Its by default 1,5% change, can be changed by touchSetDefaultThreshold(float percentage)
 
 bool touch1detected = false;
 bool touch2detected = false;
@@ -23,6 +19,10 @@ void gotTouch2() {
 void setup() {
   Serial.begin(115200);
   delay(1000);  // give me time to bring up serial monitor
+
+  //Optional: Set the threshold to 5% of the benchmark value. Only effective if threshold = 0.
+  touchSetDefaultThreshold(5);
+  
   Serial.println("ESP32 Touch Interrupt Test");
   touchAttachInterrupt(T2, gotTouch1, threshold);
   touchAttachInterrupt(T3, gotTouch2, threshold);

libraries/ESP32/examples/Touch/TouchRead/TouchRead.ino

@@ -1,5 +1,5 @@
 // ESP32 Touch Test
-// Just test touch pin - Touch0 is T0 which is on GPIO 4.
+// Just test touch pin - Touch2 is T2 which is on GPIO 2.
 
 void setup() {
   Serial.begin(115200);
@@ -8,6 +8,6 @@ void setup() {
 }
 
 void loop() {
-  Serial.println(touchRead(T1));  // get value using T0
+  Serial.println(touchRead(T2));  // get value using T2
   delay(1000);
 }