ESP32 mit Arduino

ESP32 Devboard 38pin version:

Programming the ESP32 Devboard from the Arduino IDE

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.

example: Spaghettimonster_Serial

Code:

// 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