pot plugin w. example

lib/esp32_lora_wifi/ESP32/examples/AnalogOut/LEDCSoftwareFade/LEDCSoftwareFade.ino

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+/*
+ LEDC Software Fade
+
+ This example shows how to software fade LED
+ using the ledcWrite function.
+
+ Code adapted from original Arduino Fade example:
+ https://www.arduino.cc/en/Tutorial/Fade
+
+ This example code is in the public domain.
+ */
+
+// use first channel of 16 channels (started from zero)
+#define LEDC_CHANNEL_0     0
+
+// use 13 bit precission for LEDC timer
+#define LEDC_TIMER_13_BIT  13
+
+// use 5000 Hz as a LEDC base frequency
+#define LEDC_BASE_FREQ     5000
+
+// fade LED PIN (replace with LED_BUILTIN constant for built-in LED)
+#define LED_PIN            5
+
+int brightness = 0;    // how bright the LED is
+int fadeAmount = 5;    // how many points to fade the LED by
+
+// Arduino like analogWrite
+// value has to be between 0 and valueMax
+void ledcAnalogWrite(uint8_t channel, uint32_t value, uint32_t valueMax = 255) {
+  // calculate duty
+  uint32_t duty = (LEDC_BASE_FREQ / valueMax) * min(value, valueMax);
+
+  // write duty to LEDC
+  ledcWrite(channel, duty);
+}
+
+void setup() {
+  // Setup timer and attach timer to a led pin
+  ledcSetup(LEDC_CHANNEL_0, LEDC_BASE_FREQ, LEDC_TIMER_13_BIT);
+  ledcAttachPin(LED_PIN, LEDC_CHANNEL_0);
+}
+
+void loop() {
+  // set the brightness on LEDC channel 0
+  ledcAnalogWrite(LEDC_CHANNEL_0, brightness);
+
+  // change the brightness for next time through the loop:
+  brightness = brightness + fadeAmount;
+
+  // reverse the direction of the fading at the ends of the fade:
+  if (brightness <= 0 || brightness >= 255) {
+    fadeAmount = -fadeAmount;
+  }
+  // wait for 30 milliseconds to see the dimming effect
+  delay(30);
+}

lib/esp32_lora_wifi/ESP32/examples/AnalogOut/SigmaDelta/SigmaDelta.ino

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+void setup()
+{
+    //setup channel 0 with frequency 312500 Hz
+    sigmaDeltaSetup(0, 312500);
+    //attach pin 18 to channel 0
+    sigmaDeltaAttachPin(18,0);
+    //initialize channel 0 to off
+    sigmaDeltaWrite(0, 0);
+}
+
+void loop()
+{
+    //slowly ramp-up the value
+    //will overflow at 256
+    static uint8_t i = 0;
+    sigmaDeltaWrite(0, i++);
+    delay(100);
+}

lib/esp32_lora_wifi/ESP32/examples/Timer/RepeatTimer/RepeatTimer.ino

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+/*
+ Repeat timer example
+
+ This example shows how to use hardware timer in ESP32. The timer calls onTimer
+ function every second. The timer can be stopped with button attached to PIN 0
+ (IO0).
+
+ This example code is in the public domain.
+ */
+
+// Stop button is attached to PIN 0 (IO0)
+#define BTN_STOP_ALARM    0
+
+hw_timer_t * timer = NULL;
+
+void onTimer(){
+  static unsigned int counter = 1;
+
+  Serial.print("onTimer no. ");
+  Serial.print(counter);
+  Serial.print(" at ");
+  Serial.print(millis());
+  Serial.println(" ms");
+
+  counter++;
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  // Set BTN_STOP_ALARM to input mode
+  pinMode(BTN_STOP_ALARM, INPUT);
+
+  // Use 1st timer of 4 (counted from zero).
+  // Set 80 divider for prescaler (see ESP32 Technical Reference Manual for more
+  // info).
+  timer = timerBegin(0, 80, true);
+
+  // Attach onTimer function to our timer.
+  timerAttachInterrupt(timer, &onTimer, true);
+
+  // Set alarm to call onTimer function every second (value in microseconds).
+  // Repeat the alarm (third parameter)
+  timerAlarmWrite(timer, 1000000, true);
+
+  // Start an alarm
+  timerAlarmEnable(timer);
+}
+
+void loop() {
+  // If button is pressed
+  if (digitalRead(BTN_STOP_ALARM) == LOW) {
+    // If timer is still running
+    if (timer) {
+      // Stop and free timer
+      timerEnd(timer);
+      timer = NULL;
+    }
+  }
+}

lib/esp32_lora_wifi/ESP32/examples/Touch/TouchInterrupt/TouchInterrupt.ino

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+/*
+This is un example howto use Touch Intrrerupts
+The bigger the threshold, the more sensible is the touch
+*/
+
+int threshold = 40;
+bool touch1detected = false;
+bool touch2detected = false;
+
+void gotTouch1(){
+ touch1detected = true;
+}
+
+void gotTouch2(){
+ touch2detected = true;
+}
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000); // give me time to bring up serial monitor
+  Serial.println("ESP32 Touch Interrupt Test");
+  touchAttachInterrupt(T2, gotTouch1, threshold);
+  touchAttachInterrupt(T3, gotTouch2, threshold);
+}
+
+void loop(){
+  if(touch1detected){
+    touch1detected = false;
+    Serial.println("Touch 1 detected");
+  }
+  if(touch2detected){
+    touch2detected = false;
+    Serial.println("Touch 2 detected");
+  }
+}

lib/esp32_lora_wifi/ESP32/examples/Touch/TouchRead/TouchRead.ino

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+// ESP32 Touch Test
+// Just test touch pin - Touch0 is T0 which is on GPIO 4.
+
+void setup()
+{
+  Serial.begin(115200);
+  delay(1000); // give me time to bring up serial monitor
+  Serial.println("ESP32 Touch Test");
+}
+
+void loop()
+{
+  Serial.println(touchRead(T0));  // get value using T0
+  delay(1000);
+}

lib/esp32_lora_wifi/ESP32/library.properties

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+name=ESP32
+version=1.0
+author=Hristo Gochkov, Ivan Grokhtkov
+maintainer=Hristo Gochkov <hristo@espressif.com>
+sentence=ESP32 sketches examples
+paragraph=
+category=Other
+url=
+architectures=esp32

lib/esp32_lora_wifi/ESP32/src/dummy.h

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+// This file is here only to silence warnings from Arduino IDE
+// Currently IDE doesn't support no-code libraries, like this collection of example sketches.