String length send to Thingspeak problem
Posted: Mon Mar 09, 2015 12:58 amGot my Pro Mini v3.3 and ESP8266 doing a thingspeak channel update as well as twiiter tweet at the same time. I have ran into a problem that I just can't figure out. If the update string I send to the ESP8266 to send to thingspeak is over 80 chars in length it will give me a 400 error bad request. If I back it down to 80 chars or under it send just fine. Here are my errors and the code if someone can help me out. PS: I know the code is messy as I am a newb so please be gentle but any pointers will be appreciated. ESP8266 is running AI-v0.9.5.0 AT Firmware.
This is what happens when it is over 80 chars long
This is what happens when it is 80 chars or less
My sloppy code:
Thanks if anyone can help me out.
This is what happens when it is over 80 chars long
Code: Select all
AT+CIPSTART="TCP","api.thingspeak.com",80
CONNECT
OK
AT+CIPSEND=90
> GET /update?key=XXXXXXXXXXXXXXXX&field1=1&twitter=xxxxxx&tweet=Gen at Old HE is running!1
SEND OK
+IPD,323:HTTP/1.1 400 Bad Request
Server: nginx/1.7.5
Date: Mon, 09 Mar 2015 05:09:15 GMT
Content-Type: text/html
Content-Length: 172
Connection: close
<html>
<head><title>400 Bad Request</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.7.5</center>
</body>
</html>
OK
CLOSEDThis is what happens when it is 80 chars or less
Code: Select all
AT+CIPSTART="TCP","api.thingspeak.com",80
CONNECT
OK
AT+CIPSEND=80
> GET /update?key=XXXXXXXXXXXXXXXX&field1=1&twitter=xxxxxx&tweet=Gen at running!1
SEND OK
+IPD,3:376
OK
CLOSED
My sloppy code:
Code: Select all
#include <SoftwareSerial.h>
#define DEBUG
#define _ledpin 13
int genPin = 5;
//*-- Hardware Serial
#define _baudrate 9600
//*-- Software Serial
#define _rxpin 10
#define _txpin 11
SoftwareSerial debug( _rxpin, _txpin ); // RX, TX
//*-- IoT Information
#define SSID "ssid"
#define PASS "password"
#define IP "api.thingspeak.com" // ThingSpeak IP Address: 184.106.153.149
String api_key = "XXXXXXXXXXXXXXXX";
// Variables will change:
int genPushCounter = 0; // counter for the number of button presses
int genState = 0; // current state of the button
int lastGenState = 0; // previous state of the button
void setup() {
pinMode(genPin, INPUT);
Serial.begin( _baudrate );
debug.begin( _baudrate );
debug.println("ESP8266");
Serial.println("AT+RST");
delay(1000);
if(Serial.find("ready"))
{
debug.println("ESP8266 CONNECTED\nREADY TO SEND DATA");
connectWiFi();
}
}
void loop() {
delay(15000); // 30 second
// ESP8266 Client
String cmd = "AT+CIPSTART=\"TCP\",\"";
cmd += IP;
cmd += "\",80";
Serial.println(cmd);
debug.println(cmd);
if(Serial.find("Error"))
{
debug.print( "CANNOT CONNECT\nEXITING" );
return;
}
String getStr = "GET /update?key=";
String getStr2 = "GET /update?key=";
genState = digitalRead(genPin);
if (genState != lastGenState) {
if (genState == HIGH)
{
genPushCounter++;
getStr += api_key;
getStr += "&field1=";
getStr += 1;
getStr += "&twitter=";
getStr += "xxxxxx";
getStr += "&tweet=";
getStr += "Gen at Old HE is running!! Total=";
getStr += genPushCounter;
getStr += "\r";
String send = "AT+CIPSEND=";
send += String(getStr.length());
Serial.println(send);
debug.println(send);
} else
{
getStr2 += api_key;
getStr2 += "&field1=";
getStr2 += 0;
getStr2 += "&twitter=";
getStr2 += "xxxxxx";
getStr2 += "&tweet=";
getStr2 += "Gen at Old HE has shut down!!";
getStr2 += "\r";
String send = "AT+CIPSEND=";
send += String(getStr2.length());
Serial.println(send);
debug.println(send);
}
}
lastGenState = genState;
if(Serial.find( ">" ) )
{
debug.print(">");
if (genState == HIGH)
{
Serial.println(getStr);
debug.println(getStr);
} else
{
Serial.println(getStr2);
debug.println(getStr2);
}
}
else
{
Serial.println( "AT+CIPCLOSE" );
debug.println( "AT+CIPCLOSE" );
}
Serial.find("+IPD");
while (Serial.available())
{
char c = Serial.read();
debug.write(c);
if (c == '\r') debug.print('\n');
}
if( Serial.find("OK") )
{
debug.println( "DATA SENT" );
}
else
{
debug.println( "DATA NOT SENT\nEXITING" );
}
}
void sendDebug(String cmd)
{
debug.print("SEND: ");
debug.println(cmd);
Serial.println(cmd);
}
boolean connectWiFi()
{
Serial.println("AT+CWMODE=1");
debug.println("AT+CWMODE=1");
delay(2000);
String cmd="AT+CWJAP=\"";
cmd+=SSID;
cmd+="\",\"";
cmd+=PASS;
cmd+="\"";
Serial.println(cmd);
delay(5000);
if(Serial.find("OK"))
{
debug.println("WIFI CONNECTED");
delay(3000);
Serial.println("AT+CIFSR");
while (Serial.available())
debug.write(Serial.read());
}
else
{
debug.println("ERROR CONNECTING TO WIFI");
return false;
}
cmd = "AT+CIPMUX=0";
Serial.println( cmd );
debug.println( cmd );
if( Serial.find( "Error") )
{
debug.print( "CANNOT SET SINGLE CONNECTION MODE" );
return false;
}
}
Thanks if anyone can help me out.