Hello,
iám a german costumer and hope for help, i hope my english is good enough. I´ve bought two devices of this serial bluetooth modules. http://www.seeedstudio.com/wiki/Grove_- … _Bluetooth
My plan is to connect two arduinos, one mega and one uno, togehter. The uno have to recive data from the mega. the mega is integrated in a controlunit.
so i have installed one module to the mega as master, and the other module to the uno, as slave.
Both modules show on the led´s that they are abel to connect but the diddn´t. i dont know why.
i use the following code from your tutorials.
for the master i use
/*
BluetoothShield Demo Code Master.pde.This sketch could be used with
Slave.pde to establish connection between two Arduino.
2011 Copyright (c) Seeed Technology Inc. All right reserved.
Author: Steve Chang
This demo code is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
For more details about the product please check http://www.seeedstudio.com/depot/
*/
/* Upload this sketch into Seeeduino and press reset*/
#include <SoftwareSerial.h> //Software Serial Port
#define RxD 19
#define TxD 18
String retSymb = "+RTINQ=";//start symble when there's any return
String slaveName = ";SeeedBTSlave";//Set the Slave name ,caution that ';'must be included
int nameIndex = 0;
int addrIndex = 0;
String recvBuf;
String slaveAddr;
String connectCmd = "\r\n+CONN=";
SoftwareSerial blueToothSerial(RxD,TxD);
void setup()
{
Serial.begin(9600);
pinMode(RxD, INPUT);
pinMode(TxD, OUTPUT);
setupBlueToothConnection();
//wait 1s and flush the serial buffer
delay(1000);
Serial.flush();
blueToothSerial.flush();
}
void loop()
{
char recvChar;
while(1){
if(blueToothSerial.available()){//check if there's any data sent from the remote bluetooth shield
recvChar = blueToothSerial.read();
Serial.print(recvChar);
}
if(Serial.available()){//check if there's any data sent from the local serial terminal, you can add the other applications here
recvChar = Serial.read();
blueToothSerial.print(recvChar);
}
}
}
void setupBlueToothConnection()
{
blueToothSerial.begin(38400); //Set BluetoothBee BaudRate to default baud rate 38400
blueToothSerial.print("\r\n+STWMOD=1\r\n");//set the bluetooth work in master mode
blueToothSerial.print("\r\n+STNA=SeeedBTMaster\r\n");//set the bluetooth name as "SeeedBTMaster"
blueToothSerial.print("\r\n+STPIN=0000\r\n");//Set Master pincode"0000",it must be same as Slave pincode
blueToothSerial.print("\r\n+STAUTO=0\r\n");// Auto-connection is forbidden here
delay(2000); // This delay is required.
blueToothSerial.flush();
blueToothSerial.print("\r\n+INQ=1\r\n");//make the master inquire
Serial.println("Master is inquiring!");
delay(2000); // This delay is required.
//find the target slave
char recvChar;
while(1){
if(blueToothSerial.available()){
recvChar = blueToothSerial.read();
recvBuf += recvChar;
nameIndex = recvBuf.indexOf(slaveName);//get the position of slave name
//nameIndex -= 1;//decrease the ';' in front of the slave name, to get the position of the end of the slave address
if ( nameIndex != -1 ){
//Serial.print(recvBuf);
addrIndex = (recvBuf.indexOf(retSymb,(nameIndex - retSymb.length()- 18) ) + retSymb.length());//get the start position of slave address
slaveAddr = recvBuf.substring(addrIndex, nameIndex);//get the string of slave address
break;
}
}
}
//form the full connection command
connectCmd += slaveAddr;
connectCmd += "\r\n";
int connectOK = 0;
Serial.print("Connecting to slave:");
Serial.print(slaveAddr);
Serial.println(slaveName);
//connecting the slave till they are connected
do{
blueToothSerial.print(connectCmd);//send connection command
recvBuf = "";
while(1){
if(blueToothSerial.available()){
recvChar = blueToothSerial.read();
recvBuf += recvChar;
if(recvBuf.indexOf("CONNECT:OK") != -1){
connectOK = 1;
Serial.println("Connected!");
blueToothSerial.print("Connected!");
break;
}else if(recvBuf.indexOf("CONNECT:FAIL") != -1){
Serial.println("Connect again!");
break;
}
}
}
}while(0 == connectOK);
}
for the slave i use
/*
BluetoothShield Demo Code Slave.pde. This sketch could be used with
Master.pde to establish connection between two Arduino. It can also
be used for one slave bluetooth connected by the device(PC/Smart Phone)
with bluetooth function.
2011 Copyright (c) Seeed Technology Inc. All right reserved.
Author: Steve Chang
This demo code is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
For more details about the product please check http://www.seeedstudio.com/depot/
*/
/* Upload this sketch into Seeeduino and press reset*/
#include <SoftwareSerial.h> //Software Serial Port
#define RxD 6
#define TxD 7
SoftwareSerial blueToothSerial(RxD,TxD);
void setup()
{
Serial.begin(9600);
pinMode(RxD, INPUT);
pinMode(TxD, OUTPUT);
setupBlueToothConnection();
}
void loop()
{
char recvChar;
while(1){
if(blueToothSerial.available()){//check if there's any data sent from the remote bluetooth shield
recvChar = blueToothSerial.read();
Serial.print(recvChar);
}
if(Serial.available()){//check if there's any data sent from the local serial terminal, you can add the other applications here
recvChar = Serial.read();
blueToothSerial.print(recvChar);
}
}
}
void setupBlueToothConnection()
{
blueToothSerial.begin(38400); //Set BluetoothBee BaudRate to default baud rate 38400
blueToothSerial.print("\r\n+STWMOD=0\r\n"); //set the bluetooth work in slave mode
blueToothSerial.print("\r\n+STNA=SeeedBTSlave\r\n"); //set the bluetooth name as "SeeedBTSlave"
blueToothSerial.print("\r\n+STPIN=0000\r\n");//Set SLAVE pincode"0000"
blueToothSerial.print("\r\n+STOAUT=1\r\n"); // Permit Paired device to connect me
blueToothSerial.print("\r\n+STAUTO=0\r\n"); // Auto-connection should be forbidden here
delay(2000); // This delay is required.
blueToothSerial.print("\r\n+INQ=1\r\n"); //make the slave bluetooth inquirable
Serial.println("The slave bluetooth is inquirable!");
delay(2000); // This delay is required.
blueToothSerial.flush();
}
The wiring on the uno is pin 6 RX, pin 7 tx. On the mega i use a uart port, so wiring is 19 tx, 18rx.
I can search the slave with my samsung galaxy s4. if i press connect, i get from the cellphone an ok, but in the serial monitor of the arduino ide i didn´t an the led´s state doesn´t change.
i fact i only need a static connection between master and slave i never need an other device. #
i dont know were my mistake. please help me to find the mistake. let my know how i have to change the code or what can i do.
thanks for all your help.