Hello Community,
i try to Recive and Send Data between the ESP8266-01 and the Arduino Nano over SoftwareSerial but
i recive only numbers or wrong strings "_??"
here is my Code.
ESP8266-01:
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServerSecure.h>
#include <ESP8266mDNS.h>
extern "C" {
#include <user_interface.h>
}
uint8_t mac[6] {macadresse};
#include <SoftwareSerial.h>
SoftwareSerial mySerial(3,1);
#ifndef STASSID
#define STASSID "wlan"
#define STAPSK "pw"
#endif
const char* ssid = STASSID;
const char* password = STAPSK;
BearSSL::ESP8266WebServerSecure server(443);
static const char serverCert[] PROGMEM = R"EOF(
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
)EOF";
static const char serverKey[] PROGMEM = R"EOF(
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
)EOF";
const int led = 13;
void handleRoot() {
digitalWrite(led, 1);
mySerial.write("B");
Serial.write("A");
Serial.println("N");
String IncomingString = "";
boolean StringReady = false;
/*while(mySerial.available()){
IncomingString=mySerial.readString();
StringReady = true;
}
if(StringReady){
server.send(200, "text/plain", "Hello from esp8266 over HTTPS!");
digitalWrite(led, 0);
}*/
server.send(200, "text/plain", "Hello from esp8266 over HTTPS!");
digitalWrite(led, 0);
}
void handleNotFound(){
digitalWrite(led, 1);
String message = "File Not Found\n\n";
message += "URI: ";
message += server.uri();
message += "\nMethod: ";
message += (server.method() == HTTP_GET)?"GET":"POST";
message += "\nArguments: ";
message += server.args();
message += "\n";
for (uint8_t i=0; i<server.args(); i++){
message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
}
server.send(404, "text/plain", message);
digitalWrite(led, 0);
}
void setup(void){
wifi_set_macaddr(0, const_cast<uint8*>(mac));
pinMode(led, OUTPUT);
digitalWrite(led, 0);
uint32_t baud = 9600;
mySerial.begin(baud);
Serial.begin(baud); WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
configTime(3 * 3600, 0, "pool.ntp.org", "time.nist.gov");
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
if (MDNS.begin("esp8266")) {
Serial.println("MDNS responder started");
}
server.getServer().setRSACert(new BearSSL::X509List(serverCert), new BearSSL::PrivateKey(serverKey));
server.on("/", handleRoot);
server.on("/inline", [](){
server.send(200, "text/plain", "this works as well");
});
server.onNotFound(handleNotFound);
server.begin();
Serial.println("HTTPS server started");
}
void loop(void){
server.handleClient();
MDNS.update();
}
ArduinoNano:
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#include <cactus_io_BME280_I2C.h>
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2,3);// RX,TX
BME280_I2C bme(0x76);
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 32 // OLED display height, in pixels
#define OLED_RESET 4 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
const int touchSw = 4;
const int led_pin = 13;
void setup() {
uint32_t baud = 9600;
mySerial.begin(baud);
pinMode(touchSw,INPUT_PULLUP);
pinMode(12, INPUT);
Serial.begin(baud);
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
for (int i=0; i<2; i++){
delay(500);
digitalWrite(LED_BUILTIN, LOW);
delay(500);
digitalWrite(LED_BUILTIN, HIGH);
}
}
if (!bme.begin()) {
display.clearDisplay();
display.setTextColor(SSD1306_WHITE);
display.setCursor(10, 20);
display.println("Bitte Überprüfen sie die verbindung von BME280!");
display.display();
while (1);
}
bme.setTempCal(-1);
pinMode(led_pin, OUTPUT); //starte led ausgabe auf pin 13
}
//int Variable1;
void loop() {
bme.readSensor();
String Data = "";
char a;
while(mySerial.available() > 0){
//a = mySerial.read();
Serial.print(mySerial.read());
//Data.concat(a);
//if(a == '\n'){
// Serial.println(a);
// //if(a != '\0'){
// if(a == 'B'){
// mySerial.write(bme.getPressure_MB());mySerial.write("mbar");
// mySerial.write(bme.getTemperature_C());mySerial.write("°C");
// mySerial.write(bme.getHumidity());mySerial.write("%");
// }
//}
// }
}
boolean touchState;
touchState = digitalRead(touchSw); //pin 4 auslesen
//display.println(touchState);
if(touchState == 1)
{
//Serial.print("On");
digitalWrite(LED_BUILTIN, HIGH);
}
else
{
//Serial.print("Off");
digitalWrite(LED_BUILTIN, LOW);
}
display.clearDisplay();
display.setTextColor(SSD1306_WHITE);
display.setCursor(0, 0);
//display.println(Variable1);
display.print(bme.getPressure_MB());display.println("mbar");
display.print(bme.getTemperature_C());display.println("°C");
display.print(bme.getHumidity());display.println("%");
display.display(); // Show initial text
}
I have actually connected GPIO1 from Esp8266 with the D3 from arduino and D2 from Arduino to the GPIO0 from ESP8266 with a 1k ohm resistance.
I dont know what i m doing wrong. i Use the Arduino IDE. and for the ESP http://arduino.esp8266.com/stable/package_esp8266com_index.json
Regards Michael N.
