mirror of
https://github.com/0xFEEDC0DE64/arduino-esp32.git
synced 2025-07-01 13:00:59 +02:00
0ea485e518
Summary Touch Sensor refactoring to be based on IDF 4.4. Adds support to ESP32S2 and future ESP32S3. Adds some new APIs: For all chips: void touchAttachInterruptArg(uint8_t pin, void (*userFunc)(void*), void *arg, uint32_t threshold); This function allows the user to add and pass a void* parameter to the ISR user callback. void touchDetachInterrupt(uint8_t pin); This function detaches ISR call back for the touch pad pin. Only ESP32 chip void touchInterruptSetThresholdDirection(bool mustbeLower); This function allows the user to set if the ISR callback will be activated when the touch sensor readings are lower or higher than the threshold defined. See example TouchButton.ino. Only ESP32-S2 and ESP32-S3 chips bool touchInterruptGetLastStatus(uint8_t pin); This function reports if the touch pad pin is touched or untouched. It can be used with ISR to identify when it is touched and untouched (released). See example TouchButtonV2.ino. Impact None. ll original APIs and examples now run on ESP32 and ESP32-S2. Related links Fix #6095 Fix #6034 Fix #5799 Fix #5745 Fix #5527 Fix #5493 Fix #4321 Fix #4044 Fix #2722 Fix #2625
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
/*
|
|
|
|
This is an example how to use Touch Intrrerupts
|
|
The sketh will tell when it is touched and then relesased as like a push-button
|
|
|
|
This method based on touchInterruptSetThresholdDirection() is only available for ESP32
|
|
*/
|
|
|
|
#include "Arduino.h"
|
|
|
|
int threshold = 40;
|
|
bool touchActive = false;
|
|
bool lastTouchActive = false;
|
|
bool testingLower = true;
|
|
|
|
void gotTouchEvent(){
|
|
if (lastTouchActive != testingLower) {
|
|
touchActive = !touchActive;
|
|
testingLower = !testingLower;
|
|
// Touch ISR will be inverted: Lower <--> Higher than the Threshold after ISR event is noticed
|
|
touchInterruptSetThresholdDirection(testingLower);
|
|
}
|
|
}
|
|
|
|
void setup() {
|
|
Serial.begin(115200);
|
|
delay(1000); // give me time to bring up serial monitor
|
|
Serial.println("ESP32 Touch Interrupt Test");
|
|
touchAttachInterrupt(T2, gotTouchEvent, threshold);
|
|
|
|
// Touch ISR will be activated when touchRead is lower than the Threshold
|
|
touchInterruptSetThresholdDirection(testingLower);
|
|
}
|
|
|
|
void loop(){
|
|
if(lastTouchActive != touchActive){
|
|
lastTouchActive = touchActive;
|
|
if (touchActive) {
|
|
Serial.println(" ---- Touch was Pressed");
|
|
} else {
|
|
Serial.println(" ---- Touch was Released");
|
|
}
|
|
}
|
|
Serial.printf("T2 pin2 = %d \n", touchRead(T2));
|
|
delay(125);
|
|
}
|