Hallo,
Mit dem ESP-01s meine ich das ESP-01s Board mit dem ESP8266 Mikroprozessor.
Datenblatt: http://www.microchip.ua/wireless/esp01.pdf
Als Arduino Board bediene ich mich am Arduino UNO.
Das Hochladen des Codes auf das WLAN Modul geht problemlos. Will ich allerdings den Besipeilsketch "Blink" auf den Arduino hochladen, so kommt folgende Fehlermeldung:
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x42
Sketch der auf den ESP-01s hochgeladen wird:
//
// Copyright 2015 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// FirebaseDemo_ESP8266 is a sample that demo the different functions
// of the FirebaseArduino API.
#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>
// Set these to run example.
#define FIREBASE_HOST "xxx"
#define FIREBASE_AUTH "xxx"
#define WIFI_SSID "xxx"
#define WIFI_PASSWORD "xxx"
void setup() {
Serial.begin(9600);
pinMode(10, OUTPUT);
// connect to wifi.
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
Serial.print("connecting");
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println();
Serial.print("connected: ");
Serial.println(WiFi.localIP());
Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
}
int n = 0;
void loop() {
// set value
Firebase.setFloat("number", 42.0);
// handle error
if (Firebase.failed()) {
Serial.print("setting /number failed:");
Serial.println(Firebase.error());
return;
}
delay(1000);
// update value
Firebase.setFloat("number", 43.0);
// handle error
if (Firebase.failed()) {
Serial.print("setting /number failed:");
Serial.println(Firebase.error());
return;
}
delay(1000);
// get value
Serial.print("number: ");
Serial.println(Firebase.getFloat("number"));
delay(1000);
// remove value
Firebase.remove("number");
delay(1000);
// set string value
Firebase.setString("message", "hello world");
// handle error
if (Firebase.failed()) {
Serial.print("setting /message failed:");
Serial.println(Firebase.error());
return;
}
delay(1000);
// set bool value
Firebase.setBool("truth", false);
// handle error
if (Firebase.failed()) {
Serial.print("setting /truth failed:");
Serial.println(Firebase.error());
return;
}
delay(1000);
// append a new value to /logs
String name = Firebase.pushInt("logs", n++);
// handle error
if (Firebase.failed()) {
Serial.print("pushing /logs failed:");
Serial.println(Firebase.error());
return;
}
Serial.print("pushed: /logs/");
Serial.println(name);
delay(1000);
digitalWrite(10, HIGH);
delay(1000);
digitalWrite(10,LOW);
delay(1000);
}
Sketch der auf den Arduino hochgeladen wird:
/*
Blink
Turns an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
the correct LED pin independent of which board is used.
If you want to know what pin the on-board LED is connected to on your Arduino
model, check the Technical Specs of your board at:
https://www.arduino.cc/en/Main/Products
modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
modified 8 Sep 2016
by Colby Newman
This example code is in the public domain.
http://www.arduino.cc/en/Tutorial/Blink
*/
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
Die Pinbelegungen sehen wie folgt aus:
ESP-01s / Arduino UNO
Vcc / 3,3V
GND / GND
GPIO0 / no connection (außer während dem Hochladen -> GPIO0 auf GND)
GPIO2 / no connection
CH_PD / 3,3V
Rx / Tx (beim Hochladen Rx / Rx)
Tx / Rx (beim Hochladen Tx / Tx)
Reset / no connection
zusätzliche Verkabelungen:
LED auf Pin 13
