- Sat Apr 08, 2017 11:30 pm
#64760
Hi all,
Few days ago I bought some ESP modules and started playing with them. I am able to upload a sketch, however I got no response to Serial Monitor. I would expect IP address to connect to and some additional data:
The code is barely edited example shipped with ESP arduino library.
I use this wiring for programming:
I selected Generic ESP8266 board in Arduino IDE and left all settings without changes.
Programmer: https://www.arduino.cc/en/Main/USBSerial
ESP module: http://www.ebay.com/itm/191981905297?ul_noapp=true
I suppose it is worth to point out, that all pins are soldered by myself - this could lead to some unexpected behavior (I am not good at soldering at all) too.
Could you please give me any suggestions what I am doing wrong?
Few days ago I bought some ESP modules and started playing with them. I am able to upload a sketch, however I got no response to Serial Monitor. I would expect IP address to connect to and some additional data:
Code: Select all
/*
* This sketch demonstrates how to set up a simple HTTP-like server.
* The server will set a GPIO pin depending on the request
* http://server_ip/gpio/0 will set the GPIO2 low,
* http://server_ip/gpio/1 will set the GPIO2 high
* server_ip is the IP address of the ESP8266 module, will be
* printed to Serial when the module is connected.
*/
#include <ESP8266WiFi.h>
const char* ssid = "Popelarka";
const char* password = "rony1997";
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);
void setup() {
Serial.begin(115200);
//Serial.setDebugOutput(true);
delay(10);
// prepare GPIO2
pinMode(5, OUTPUT);
digitalWrite(5, 0);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
// Match the request
int val;
if (req.indexOf("/gpio/0") != -1)
val = 0;
else if (req.indexOf("/gpio/1") != -1)
val = 1;
else {
Serial.println("invalid request");
val = 0;
//client.stop();
}
// Set GPIO2 according to the request
digitalWrite(5, val);
client.flush();
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now ";
s += (val)?"high":"low";
s += "</html>\n";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Client disonnected");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
}
The code is barely edited example shipped with ESP arduino library.
I use this wiring for programming:
Code: Select all
ESP <-> USB2Serial
TX -> RX
RX -> TX
D0 -> GND
D2 -> VCC
D15 -> GND
GND -> GND
Reset -> Reset
CH_PD -> VCC
VCC -> +5V
I selected Generic ESP8266 board in Arduino IDE and left all settings without changes.
Programmer: https://www.arduino.cc/en/Main/USBSerial
ESP module: http://www.ebay.com/itm/191981905297?ul_noapp=true
I suppose it is worth to point out, that all pins are soldered by myself - this could lead to some unexpected behavior (I am not good at soldering at all) too.
Could you please give me any suggestions what I am doing wrong?
