ESP32 mit Arduino

Um den "ESP 32 Dev Module" programieren zu können müsst ihr in Arduino folgende schritte machen:

1 den link zum board manager URL hinzufügen

Menu: Preferences —> Additional Boards Manager URLs:

https://dl.espressif.com/dl/package_esp32_index.json

2 die library installieren

Menu: Tools —> Boards —> Boards Manager:

search for: “ESP32”

Install: “esp32 by Espressif Systems”

3 das board und den port auswählen

Menu: Tools —> Board: ESP32 Dev Module

Menu: Tools —> Port: dev/cu…

(unplug and plug to see which port appears)

4 example codes

example: blink an LED

open example code

Menu: File —> Examples —> Basics —> “Blink”

edit: LED_PIN = 2;

upload code

—> connect an LED between GPIO pin 2 and GND (!make sure it is ground and not CMD!)

connect an LED between GND and pin 2

the LED should blink on and off

example: reading analog sensor values

OPEN EXAMPLE: Menu: File —> Examples —> Communication —> “Graph”

edit: Serial.begin(115200);

edit: pick a GPIO pin with and ADC

(GPIO = General Purpose In Out)

(ADC = Analog Digital Converter)

for example: analogRead(34);

upload

// Note: ADC2 pins cannot be used when Wi-Fi is used. So, if you’re using Wi-Fi and you’re having trouble getting the value from an ADC2 GPIO, you may consider using an ADC1 GPIO instead, that should solve your problem. READING multiple ANALOG SENSOR VALUES with ESP

example: Spaghettimonster_Serial

Code:

// comment
var setArray = function(elems) {
    this.length = 0;
    push.apply(this, elems);
    return this;
}

// sends all 6 analog inputs over serial

int numOfSensors = 6;

byte analogPins[] = {
36, 39, 34, 35, 32, 33
};

void setup() {
for (int i = 0; i < numOfSensors; i++) {
pinMode(analogPins[i], INPUT);
}
Serial.begin(115200);
}

void loop() {

for (int i = 0; i < numOfSensors; i++) {
Serial.print(analogRead(analogPins[i]));
Serial.print(“\t”);
}

//print the following min and max sensor values
//for graphing using the arduino plotter
//because otherwise auto-adjust makes it hard to see
Serial.print(0);
Serial.print(“\t”);
Serial.print(4095);
Serial.println();

delay(20); //a little bit of delay
}

upload

open serial monitor: you should see 6 analog sensor value printed in one line, plus the two values: “0” = min and “4095” = max