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