ESP8266 Community Forum

- Mon Jun 17, 2019 1:15 am #82838 Hi,I am working with Arduino Uno and ESP8266.

I connected ESP8266 with Arduino Uno, and downloaded ESP8266 library(https://github.com/Diaoul/arduino-ESP8266)..

'joinAP' was OK and 'connect' was also OK.

But the problem was http request.

"getStatus(wifi.send("GET / HTTP/1.0\r\n\r\n"))" in setup code always showed me 'TIMEOUT'.

Below is my code.

Please save my code..

#include <SoftwareSerial.h>
#include "ESP8266.h"

#define SSID "SSID"
#define PASS "PASS"
#define DST_IP "www.google.com"

SoftwareSerial esp8266Serial = SoftwareSerial(2, 3);
ESP8266 wifi = ESP8266(esp8266Serial);

void setup()
{
Serial.begin(9600);

// ESP8266
esp8266Serial.begin(9600);
wifi.begin();
wifi.setTimeout(10);

/****************************************/
/****** Basic commands ******/
/****************************************/
// test
Serial.print("test: ");
Serial.println(getStatus(wifi.test()));

// restart
Serial.print("restart: ");
Serial.println(getStatus(wifi.restart()));

// getVersion
char version[16] = {};
Serial.print("getVersion: ");
Serial.print(getStatus(wifi.getVersion(version, 16)));
Serial.print(" : ");
Serial.println(version);


// getWifiMode
///*
ESP8266WifiMode mode;
Serial.print("getWifiMode: ");
Serial.println(getStatus(wifi.getMode(&mode)));//*/
Serial.print("Wifi mode>>:");
Serial.println(mode);
if( mode != ESP8266_WIFI_STATION)
{
// setWifiMode
Serial.print("setWifiMode: ");
// Serial.println(getStatus(wifi.setMode(ESP8266_WIFI_ACCESSPOINT)));
Serial.println(getStatus(wifi.setMode(ESP8266_WIFI_STATION )));
}
else
Serial.println("already ESP8266_WIFI_STATION mode");

/****************************************/
/****** WiFi commands ******/
/****************************************/
// joinAP
Serial.print("joinAP: ");
Serial.println(getStatus(wifi.joinAP(SSID, PASS)));


/****************************************/
/****** TCP/IP commands ******/
/****************************************/
// connect
Serial.print("connect: ");
Serial.println(getStatus(wifi.connect(ESP8266_PROTOCOL_TCP, DST_IP, 80)));

// send
Serial.print("send: ");
Serial.println(getStatus(wifi.send("GET / HTTP/1.0\r\n\r\n")));

}

void loop()
{
/****************************************/
/****** WiFi commands ******/
/****************************************/

// read data
unsigned int id;
int length;
int totalRead;
char buffer[300] = {};

if ((length = wifi.available()) > 0) {
id = wifi.getId();
totalRead = wifi.read(buffer, 300);

if (length > 0) {
Serial.print("Received ");
Serial.print(totalRead);
Serial.print("/");
Serial.print(length);
Serial.print(" bytes from client ");
//Serial.print("from client ");
Serial.print(id);
Serial.print(": ");
Serial.println((char*)buffer);
}
}
}

String getStatus(bool status)
{
if (status)
return "OK";

return "KO";
}

String getStatus(ESP8266CommandStatus status)
{
switch (status) {
case ESP8266_COMMAND_INVALID:
return "INVALID";
break;

case ESP8266_COMMAND_TIMEOUT:
return "TIMEOUT";
break;

case ESP8266_COMMAND_OK:
return "OK";
break;

case ESP8266_COMMAND_NO_CHANGE:
return "NO CHANGE";
break;

case ESP8266_COMMAND_ERROR:
return "ERROR";
break;

case ESP8266_COMMAND_NO_LINK:
return "NO LINK";
break;

case ESP8266_COMMAND_TOO_LONG:
return "TOO LONG";
break;

case ESP8266_COMMAND_FAIL:
return "FAIL";
break;

default:
return "UNKNOWN COMMAND STATUS";
break;
}
}

String getRole(ESP8266Role role)
{
switch (role) {
case ESP8266_ROLE_CLIENT:
return "CLIENT";
break;

case ESP8266_ROLE_SERVER:
return "SERVER";
break;

default:
return "UNKNOWN ROLE";
break;
}
}

String getProtocol(ESP8266Protocol protocol)
{
switch (protocol) {
case ESP8266_PROTOCOL_TCP:
return "TCP";
break;

case ESP8266_PROTOCOL_UDP:
return "UDP";
break;

default:
return "UNKNOWN PROTOCOL";
break;
}
}

- Thu Jun 20, 2019 11:30 pm #82898 Hi everyone,

I'm working with an ESP8266 in HSPI slave mode connected with an Atmel Atmega 328p in master mode. Communication works fine until I try to share the SPI interface with another device as a slave. Obviously, I have two different chip select (one for esp and one for the other device). Every time I send a message to the other device (with esp's CS set HIGH) the next communications with esp fail.
Has anyone ever faced a similar issue? Is it possible to use esp as a slave with other devices connected?
I'm using the Arduino Core 2.4.0 on the esp with SPISlave library and the classical Arduino SPI library on 328p.

Thanks

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