I am currently using an EtherTen to try and connect Arduino to Twitter. However, I keep getting an error saying "'twitter'does not name a type". How can I fix this problem?
#if defined(ARDUINO) && ARDUINO > 18 // Arduino 0019 or later
#include <SPI.h>
#endif
#include <Ethernet.h>
#include <EthernetDNS.h> //Only needed in Arduino 0022 or earlier
#include <Twitter.h>
byte MACaddress[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte IPaddress[] = { 10, 0, 0, 177 };
Twitter twitter("MY TOKEN HERE");
char msg[] = "Hello, World! I'm Arduino!";
void setup()
{
delay(1000);
Ethernet.begin(MACaddress, IPaddress);
Serial.begin(9600);
Serial.println("connecting ...");
if (twitter.post(msg)) {
int status = twitter.wait();
if (status == 200) {
Serial.println("OK.");
}
else {
Serial.print("failed : code ");
Serial.println(status);
}
}
else {
Serial.println("connection failed.");
}
}
void loop()
{
}
This is a fair question. It looks a lot like the sample code. The first thing I would try is removing the "<<<" and the ">>>" from the constructor?
Twitter twitter("1521141456-FjH4fHVENG3xxxxxxxxxxxxxxxxxx");
If that does not help you could look at your Ethernet.begin .
Ethernet.begin(mac, ip, gateway, subnet);
rather than
Ethernet.begin(mac, ip);
NOTE
You should be careful posting your twitter token id on a forum. I think you should edit your post so as to hide your token.
Related
I am using code derived from Rui Santos https://RandomNerdTutorials.com/esp-now-esp32-arduino-ide/
I am using ESP NOW to send readings from an ESP32 sender to an ESP32 receiver then using the ESP32 receiver to send an html message to a ESP32 web server. Per Rui's instructions I need to start WiFi with WIFI_AP_STA to allow both wifi connection methods.
The sender and receiver code is below.
If I run the code as is, i.e. the receiver setup as WIFI_AP_STA but with the WiFi.begin line commented out, I get a sender status of:
Send success, and a receive status of:Receive status. SO there is no problem sending an ESP NOW message from the sender to the receiver (also works with WIFI_STA).
If I use WIFI_AP_STA and uncomment the line in the receiver "WiFi.begin(SSIS, PASSWORD)" so that I can send a message to the ESP32 web server, I get a send status of:Send fail, and a receive status of:Receive status with failed send. The send fails but the receive is still successful. Same fail if I use WIFI_AP. It seems that in WIFI_AP_STA mode with a WiFi.begin, the receiver sends an incorrect status back to the sender.
In summary, on the receiver, using wifi mode WIFI_AP_STA without a WiFi.begin, works for sending an ESP NOW message from sender to receiver, as it should.
Using wifi mode WIFI_AP_STA and WiFi.begin on the receiver, the sender fails when sending an ESP NOW message. When I implement the web code the web html message send works. However the issue can be reproduced using the simplified code below.
Using WiFi#2.0.0.
I've run out of ideas, is anyone able to point me at further investigation areas?
My sender code is:
#include <Arduino.h>
#include <WiFi.h>
#include <esp_now.h>
// Rui Santos https://RandomNerdTutorials.com/esp-now-esp32-arduino-ide/
uint8_t broadcastAddress[] = {0x24, 0x6F, 0x28, 0xAA, 0x84, 0x10};
typedef struct struct_message
{
char ESP32NowText[33];
} struct_message;
struct_message ESP32NowMessage;
//
String text = "AAA000010000200003000040000500006";
esp_now_peer_info_t peerInfo;
// callback when data is sent
void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status)
{
Serial.print("\r\nLast Packet Send Status:\t");
Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail");
}
void setup()
{
Serial.begin(115200);
WiFi.mode(WIFI_STA);
if (esp_now_init() != ESP_OK)
{
Serial.println("Error initializing ESP-NOW");
return;
}
esp_now_register_send_cb(OnDataSent);
// Register peer
memcpy(peerInfo.peer_addr, broadcastAddress, 6);
peerInfo.channel = 0;
peerInfo.encrypt = false;
// Add peer
if (esp_now_add_peer(&peerInfo) != ESP_OK)
{
Serial.println("Failed to add peer");
return;
}
}
void loop()
{
strncpy(ESP32NowMessage.ESP32NowText, text.c_str(), text.length());
Serial.println("Msg to send:" + String(ESP32NowMessage.ESP32NowText));
Serial.println("Snd Len:" + String(sizeof(ESP32NowMessage)));
// Send message via ESP-NOW
esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *)&ESP32NowMessage, sizeof(ESP32NowMessage));
if (result == ESP_OK)
{
Serial.println("Sent with success");
}
else
{
Serial.println("Error sending the data");
}
delay(2000);
}
My receiver code is:
#include <Arduino.h>
#include <WiFi.h>
#include <esp_now.h>
// Rui Santos https://RandomNerdTutorials.com/esp-now-esp32-arduino-ide/
typedef struct struct_message
{
char ESP32NowValues[33];
} struct_message;
struct_message ESP32NowMessage;
// callback function that will be executed when data is received
void OnDataRecv(const uint8_t *mac, const uint8_t *incomingData, int len)
{
memcpy(&ESP32NowMessage, incomingData, sizeof(ESP32NowMessage));
Serial.println("Bytes received: " + String(len));
Serial.println("Values:" + String(ESP32NowMessage.ESP32NowValues));
Serial.println("---------------------------------------");
}
const char WiFiSSID[] = "SSID";
const char WiFiPassword[] = "PASSWORD";
//
void setup()
{
Serial.begin(115200);
WiFi.mode(WIFI_AP_STA);
// WiFi.begin(WiFiSSID, WiFiPassword);
// Init ESP-NOW
if (esp_now_init() != ESP_OK)
{
Serial.println("Error initializing ESP-NOW");
return;
}
esp_now_register_recv_cb(OnDataRecv);
}
void loop()
{
}
I have an NodeMCU chip that needs to connect to my home wifi and post an http request. I use the chip in WIFI_STA_AP mode as I need the chip to both accept requests via http and issue requests by http.
I do not want to hard-code my home's SSID/Password into the chip, so I have written some code that places the ESP (NodeMCU) into AP mode, receives the SSID/Pass via an http request and saves it on EEPROM.
This works great.
In the code below, onTestWifi() is called when I call http://192.168.4.1/test_wifi?wifi_ssid=mySsid&wifi_password=myPassword. The ssid and password are provided to the WiFi.begin() function. However, if I accidentally type in the wrong password and use it in WiFi.begin(), the connection will always fail until reset the chip and then insert the correct password.
What am I missing? Is it possible to change the ESP's wifi credentials programmatically, without having to reset the chip? Resetting the chip causes the client (in the case, an iPhone app) to disconnect from the chip and this breaks the entire program flow.
Here's the experimentation code I am using:
#include <ESP8266WiFiMulti.h>
#include <WiFiClient.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
ESP8266WebServer server(80);
ESP8266WiFiMulti WiFiMulti;
void setup() {
Serial.begin(115200);
Serial.println("");
delay(100);
Serial.println("Starting...");
WiFi.persistent(false);
WiFi.mode(WIFI_AP_STA);
WiFi.softAP("APSSID");
IPAddress ip = WiFi.softAPIP();
server.on("/test_wifi", onTestWifi);
server.begin();
yield();
}
void onTestWifi()
{
char ssid[30] = "";
char password[30] = "";
for (int i = 0; i < server.args(); i++)
{
String n = server.argName(i);
String v = server.arg(i);
if (n == "wifi_ssid")
v.toCharArray(ssid, 30);
else if (n == "wifi_password")
v.toCharArray(password, 30);
yield();
}
Serial.print("Connecting to: ");
Serial.print(ssid);
Serial.print(" ");
Serial.println(password);
delay(100);
WiFi.begin(ssid, password);
yield();
int counter = 0;
while (WiFi.status() != WL_CONNECTED && counter < 10)
{ // Wait for the Wi-Fi to connect
delay(1000);
Serial.print(++counter);
Serial.print(' ');
}
if (WiFi.status() != WL_CONNECTED)
{ // Failed to connect.
Serial.println("Connection failed!");
}
else {
Serial.println("Connection succeeded!");
}
yield();
}
void loop() {
server.handleClient();
}```
OK, so I figured it out. Had to add the line WiFi.disconnect(true) in the onTestWifi() function. Apparently it disconnects from the network and erases the credentials. This stuff is very poorly documented and I wasted days on it.
I hope someone finds it useful.
#include <WiFiClient.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
ESP8266WebServer server(80);
ESP8266WiFiMulti WiFiMulti;
void setup() {
Serial.begin(115200);
Serial.println("");
delay(100);
Serial.println("Starting...");
WiFi.persistent(false);
WiFi.mode(WIFI_AP_STA);
WiFi.softAP("APSSID");
IPAddress ip = WiFi.softAPIP();
server.on("/test_wifi", onTestWifi);
server.begin();
yield();
}
void onTestWifi()
{
char ssid[30] = "";
char password[30] = "";
for (int i = 0; i < server.args(); i++)
{
String n = server.argName(i);
String v = server.arg(i);
if (n == "wifi_ssid")
v.toCharArray(ssid, 30);
else if (n == "wifi_password")
v.toCharArray(password, 30);
yield();
}
Serial.print("Connecting to: ");
Serial.print(ssid);
Serial.print(" ");
Serial.println(password);
delay(100);
WiFi.begin(ssid, password);
yield();
int counter = 0;
while (WiFi.status() != WL_CONNECTED && counter < 10)
{ // Wait for the Wi-Fi to connect
delay(1000);
Serial.print(++counter);
Serial.print(' ');
}
if (WiFi.status() != WL_CONNECTED)
{ // Failed to connect.
Serial.println("Connection failed!");
}
else {
Serial.println("Connection succeeded!");
}
WiFi.disconnect(true); // <--- Added this line
yield();
}
void loop() {
server.handleClient();
}
I'm trying to make an IOT app. My android side is working good so far, however my ESP8266 is unable to read data from Firebase Database. There is no error while connecting to the internet using onboard ESP8266 though. Can anyone point to a possible error? Thank You
#include <ESP8266WiFi.h>
#include <FirebaseArduino.h>
#define WIFI_SSID "WiFi"
#define WIFI_PASSWORD "xxxxxxxx"
#define FIREBASE_HOST "https://iot.firebaseio.com"
#define FIREBASE_AUTH "xxxxxxxx"
int LED1 = D5;
void setup()
{
Serial.begin(115200);
pinMode(LED1, OUTPUT);
Serial.println('\n');
wifiConnect();
Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);
delay(10);
}
void loop()
{
if(WiFi.status() != WL_CONNECTED)
{
wifiConnect();
}
delay(10);
Serial.print("Data from firebase:" + Firebase.getString("LED1") + "\n");
digitalWrite(LED1, Firebase.getString("LED1").toInt());
//digitalWrite(LED1, HIGH);
delay(10);
}
void wifiConnect()
{
WiFi.begin(WIFI_SSID, WIFI_PASSWORD); // Connect to the network
Serial.print("Connecting to ");
Serial.print(WIFI_SSID); Serial.println(" ...");
int teller = 0;
while (WiFi.status() != WL_CONNECTED)
{ // Wait for the Wi-Fi to connect
delay(1000);
Serial.print(++teller); Serial.print(' ');
}
Serial.println('\n');
Serial.println("Connection established!");
Serial.print("IP address:\t");
Serial.println(WiFi.localIP()); // Send the IP address of the ESP8266 to the computer
}
For anyone encountering this issue. I got it working by removing the forward slash '/' at the end and the https:// from the start of Host Address.
At the line:
#define FIREBASE_HOST "https://iot.firebaseio.com"
you should fix to:
#define FIREBASE_HOST "iot.firebaseio.com"
I have arduino uno + wifishield and if fails to connect to Bluemix. It gives this error:
"Closed connection from 194.228.11.222. The operation is not authorized."
Any idea why the connection gets kicked out? What operation is not authorized?
Thanks for any idea ;)
======
Here is the code:
#include <SPI.h>
#include <Ethernet.h>
#include <WiFi.h>
#include <WifiIPStack.h>
#include <IPStack.h>
#include <Countdown.h>
#include <MQTTClient.h>
#define MQTT_MAX_PACKET_SIZE 100
#define SIZE 100
#define MQTT_PORT 1883
#define PUBLISH_TOPIC "iot-2/evt/status/fmt/json"
#define SUBSCRIBE_TOPIC "iot-2/cmd/+/fmt/json"
#define USERID "use-token-auth"
#define CLIENT_ID "d:6735ra:hlinoponie:petasek"
#define MS_PROXY "6735ra.messaging.internetofthings.ibmcloud.com"
#define AUTHTOKEN “xxxxx”
byte mac[] = { 0x90, 0xA2, 0xDA, 0x0F, 0xD6, 0x8F };
WiFiClient c;
IPStack ipstack(c);
MQTT::Client<IPStack, Countdown, 100, 1> client = MQTT::Client<IPStack, Countdown, 100, 1>(ipstack);
String deviceEvent;
char ssid[] = “XXXXX”; // your network SSID (name)
char pass[] = “XXXXX”; // your network password
int status = WL_IDLE_STATUS; // the Wifi radio's status
void setup() {
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println("WiFi shield not present");
// don't continue:
while (true);
}
String fv = WiFi.firmwareVersion();
if ( fv != "1.1.0" )
Serial.println("Please upgrade the firmware");
// attempt to connect to Wifi network:
while ( status != WL_CONNECTED) {
Serial.print("Attempting to connect to WPA SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network:
status = WiFi.begin(ssid, pass);
// wait 5 seconds for connection:
delay(5000);
}
// you're connected now, so print out the data:
Serial.print("Hooray!!! You're connected to the network\n");
}
void loop() {
float tep = mojeDHT.readTemperature();
float vlh = mojeDHT.readHumidity();
int rc = -1;
if (!client.isConnected()) {
Serial.println("Connecting to Watson IoT Foundation ...");
rc = ipstack.connect((char*)MS_PROXY, MQTT_PORT);
MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
data.MQTTVersion = 3;
data.clientID.cstring = (char*)CLIENT_ID;
data.username.cstring = (char*)USERID;
data.password.cstring = (char*)AUTHTOKEN;
data.keepAliveInterval = 60;
rc = -1;
while ((rc = client.connect(data)) != 0) {
Serial.println("rc=");
Serial.println(rc);
delay(2000);
}
Serial.println("Connected successfully\n");
// Serial.println("Temperature(in C)\tDevice Event (JSON)");
Serial.println("____________________________________________________________________________");
}
Serial.println("\n");
MQTT::Message message;
message.qos = MQTT::QOS0;
message.retained = false;
deviceEvent = String("{\"d\":{\"myName\":\"Arduino Uno\",\"temperature\":");
char buffer[60];
// convert double to string
dtostrf(getTemp(),1,2, buffer);
deviceEvent += buffer;
deviceEvent += "}}";
Serial.print("\t");
Serial.print(buffer);
Serial.print("\t\t");
deviceEvent.toCharArray(buffer, 60);
Serial.println(buffer);
message.payload = buffer;
message.payloadlen = strlen(buffer);
rc = client.publish(PUBLISH_TOPIC, message);
if (rc != 0) {
Serial.print("return code from publish was ");
Serial.println(rc);
}
client.yield(5000);
}
/*
This function is reproduced as is from Arduino site => http://playground.arduino.cc/Main/InternalTemperatureSensor
*/
double getTemp(void) {
unsigned int wADC;
double t;
ADMUX = (_BV(REFS1) | _BV(REFS0) | _BV(MUX3));
ADCSRA |= _BV(ADEN); // enable the ADC
delay(20); // wait for voltages to become stable.
ADCSRA |= _BV(ADSC); // Start the ADC
// Detect end-of-conversion
while (bit_is_set(ADCSRA,ADSC));
// Reading register "ADCW" takes care of how to read ADCL and ADCH.
wADC = ADCW;
// The offset of 324.31 could be wrong. It is just an indication.
t = (wADC - 324.31 ) / 1.22;
// The returned temperature is in degrees Celcius.
return (t);
}
It might be the case your organizations is configured to block non-secure connections (since you are using port 1883). Check the step 5 on this recipe
https://developer.ibm.com/recipes/tutorials/connect-an-arduino-uno-device-to-the-ibm-internet-of-things-foundation/
I noticed this error in the log: The topic is not valid: Topic="lwt" ClientID="d:6735ra:hlinoponie:petasek" Reason="The topic does not match an allowed rule".
I didn't see that topic listed in your code, but you may want to check to see how that may be getting set as topic.
I am trying to send data to a local server using the code below:
The server does not receive the data through the Ethernet shield. It says it connects successfully.
I have pinged Google with the Ethernet shield and also sent data through the browser using the link in char server[]. Both cases work well. Does anyone know the problem?
#include <Ethernet.h>
#include <SPI.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 192, 168, 0, 116 };
char server[] = "http://192.168.0.175/test-app/listener?data=1234";
EthernetClient client;
void setup()
{
Ethernet.begin(mac, ip);
Serial.begin(9600);
delay(1000);
Serial.println("connecting...");
if (client.connect(server,8080)) {
Serial.println("connected");
//client.println("GET /search?q=arduino HTTP/1.0");
//client.println();
client.stop();
} else {
Serial.println("connection failed");
}
}
void loop()
{
if (client.connect(server,80)){
client.stop();
Serial.println("yay!!");
}
}
You are giving full path in the server name, it only needs to be the base URL.