ESP-01 and Arduino Controlled Robotic Hand - Code Problems

[ProAce]

Hey guys,

I don't now for sure if this is the right place to put this, if it's not than just throw it to the place it should be

I'm hoping you can help me figure out how to make this project work. The idea is that we build a sensor glove which helds five bend sensors, an arduino nano and an ESP8266-01. On the other end we have an InMoov 3D Hand, five servo's, another arduino nano and another ESP8266-01. The set-up works flawless and the only problem we get is with the ESP's sending data to one another. We now do it on the way described in the code below:

Sender:

Code: Select all

#include <SoftwareSerial.h>

#define DEBUG true
int bendsensor1 = A0;
int bendsensor2 = A1;
int val1=0;
int val2=0;
SoftwareSerial esp8266(2, 3);

void setup()
{
  Serial.begin(9600);
  esp8266.begin(115200);
  sendData("AT+RST\r\n", 2000, DEBUG);
  sendData("AT+CIOBAUD=9600\r\n", 2000, DEBUG);
  esp8266.begin(9600);
  sendData("AT+CWMODE=3\r\n", 2000, DEBUG);
  sendData("AT+CWJAP=\"test\",\"test\"\r\n", 2000, DEBUG);
  delay(15000);
  sendData("AT+CIPSTART=\"TCP\",\"192.168.10.10\",80\r\n", 2000, DEBUG);
}

void loop()
  val1=analogRead(bendsensor1);
  val2=analogRead(bendsensor2);

  sendData("AT+CIPSEND=3\r\n", 100, DEBUG);
  Serial.println(val1);
 
  sendData("AT+CIPSEND=1\r\n", 100, DEBUG);
  Serial.println(val2);
}


And the serial output would look like:

Code: Select all

AT+CWMODE=3


OK
AT+CWJAP="test","test"

WIFI DISCONNECT
WIFI CONNECTED
WIFI DISCONNECT
WIFI CONNECTED
WIFI GOT IP

AT+CIPSTART="TCP","192.168.10.10",80


ERROR
CLOSED
AT+CIPSEND=3

link is not valid

ERROR
724
AT+CIPSEND=1

link is not valid

ERROR
0

Receiver:

Code: Select all

#include <SoftwareSerial.h>

#define DEBUG true

SoftwareSerial esp8266(2, 3);

void setup()
{
  Serial.begin(9600);
  esp8266.begin(115200);
  sendData("AT+RST\r\n", 2000, DEBUG);
  sendData("AT+CIOBAUD=9600\r\n", 2000, DEBUG);
  esp8266.begin(9600);
  sendData("AT+CWMODE=3\r\n", 50, DEBUG);
  sendData("AT+CWSAP=\"test\",\"test\",1,0\r\n", 50, DEBUG);
  sendData("AT+CIPAP=\"192.168.10.10\"\r\n", 50, DEBUG);
  sendData("AT+CIPMUX=1\r\n", 50, DEBUG);
  sendData("AT+CIPSERVER=1,80\r\n", 50, DEBUG);
  sendData("AT+CIFSR\r\n", 50, DEBUG);
  sendData("+IPD", 50, DEBUG);
}

void loop()
{
}

And the serial output would look like:

Code: Select all

AT+CWMODE=3


OK
AT+CWSAP="test","test",1,0


OK
AT+CIPAP="192.168.10.10"


OK
AT+CIPMUX=1


OK
AT+CIPSERVER=1,80


OK
AT+CIFSR

+CIFSR:APIP,"192.168.10.10"
+CIFSR:APMAC,bé•é¢Ò2Ñ:74:dc"
+CIFSR:STAIP,"0.0.0.0"
+CIFSR:STAMAC,"18:fe:34:f4:74:dc"

OK
+IPD

Does anyone see what the problem could be? Or does anyone know if there is another way to send this data? And how fast can I make this sending?

[ESP_Faye]

Hi,

If the " AT+CIPSTART="TCP","192.168.10.10",80 " failed, could you try to call it again later ?

Maybe when you send the command above, the TCP server is just not ready, you can try to connect it again later.