vt_main

Author: swethamurugesan

bluetooth.cpp

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+/**************************************************************************************
+ * 
+ * Name : bluetooth.cpp
+ * 
+ * Version : 1.0
+ * 
+ * Author : Raji
+ * 
+ * Description : This library is to connect bluetooth module with nodemcu12e
+ * in order to connect to wifi and ip address by sending wifi 
+ * credentials via bluetooth of SWMS 
+ * 
+ * WiFi Input : {"ssid":"yyyyy","password":"xxxx"} 
+ * 
+ * Pin Discription: (bluetooth->nodemcu12E) 
+ * Rx->Tx 
+ * Tx->Rx
+ * Vcc->Vcc
+ * Gnd->Gnd. 
+ **************************************************************************************/
+ #include "bluetooth.h"
+ #include "Arduino.h"
+ #include "BluetoothSerial.h"
+ #include<EEPROM.h>
+ #include <String.h>
+ /********************************#define************************************/
+ #define DELAY_10 10
+ BluetoothSerial ESP_BT; 
+ #define DELAY_100 100
+/******string declarations************/
+ String input_bluetooth_string;
+ String output_bluetooth_string;
+
+/*******************************************bluetooth***********************************************
+ * FUNCTION : bluetooth
+ * 
+ * DISCRIPTION: This function gets ssid and password from the mobile phone and stores in eeprom 
+ * which is used for connecting with wifi continously even after re-starting the device
+ * 
+ * PARAMETERS : int
+ * 
+ * RETURNS : if connected to wifi returns 11 else 9 
+****************************************************************************************************/
+String bluetooth_connect(){
+
+/***********************************************inialize the bluetooth variables*****************************************************/
+ input_bluetooth_string = "";
+ output_bluetooth_string="";
+
+
+/*****************************************************Read the string from the bluetooth*****************************************/ 
+ while (ESP_BT.available()) {
+ {
+ delay(DELAY_10); //small delay to allow input buffer to fill
+ char get_string = ESP_BT.read(); //gets one byte from serial buffer
+ /***breaks out of capture loop to print readstring***/
+ input_bluetooth_string += get_string;
+ } //makes the string readString 
+
+ if (input_bluetooth_string.length() > 0 ) 
+ {
+ Serial.println(input_bluetooth_string); //prints string to serial port out
+ Serial.println( "the input string from bluetooth is" );
+/*****************************************************JSON pharsing*****************************************/
+ delay(DELAY_100);
+ output_bluetooth_string="";
+ output_bluetooth_string=output_bluetooth_string+input_bluetooth_string;
+/*****************************CLEAR THE INPUT TEXT OF BLUETOOTH***********************/
+ input_bluetooth_string=""; //clears variable for new input
+ }
+
+ return output_bluetooth_string; 
+}
+}
+/*******************************************bluetooth_initialization***********************************************
+ * FUNCTION : bluetooth_initialization
+ * 
+ * DISCRIPTION: This function gets ssid and password from the mobile phone and stores in eeprom 
+ * which is used for connecting with wifi continously even after re-starting the device
+ * 
+ * PARAMETERS : int
+ * 
+ * RETURNS : if connected to wifi returns 11 else 9 
+****************************************************************************************************/
+int bluetooth_initialization(){
+/***********************************initialize bluetooth*************************************************/
+ Serial.println("hii im ble");
+ ESP_BT.begin("Vehicle_tracking"); //Name of your Bluetooth Signal
+ return 1;
+}
+

bluetooth.h

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+/**************************************************************************************
+ * 
+ * Name : bluetooth.h
+ * 
+ * Version : 1
+ * 
+ * Author : Raji
+ * 
+ * Description : This library is to connect bluetooth module with nodemcu12e
+ * in order to connect to wifi and ip address by sending wifi 
+ * credentials via bluetooth of SWMS 
+ * 
+ **************************************************************************************/
+ #ifndef BLUETOOTH_H_
+ #define BLUETOOTH_H_
+/*************C LIBRARIES********/
+ #include <String.h>
+ #include<EEPROM.h>
+ #include "Arduino.h"
+ #include "BluetoothSerial.h"
+/******string declarations************/
+ extern String input_bluetooth_string;
+ extern String output_bluetooth_string; 
+/*********************function declarartions****************************/
+ extern String bluetooth_connect(void);
+ extern int bluetooth_initialization(void);
+#endif