ajeet prajapati / Mbed 2 deprecated AESslave_modified_test_copy

modified

Dependencies:   AES CRC_1 UDAES_1 mbed

Fork of AESslave_modified_test_27-9-2017 by ajeet prajapati

main.cpp@0:f4b9f14b26cc, 2017-09-27 (annotated)

Committer:
ajeet3004
Date:
Wed Sep 27 10:18:18 2017 +0000
Revision:
0:f4b9f14b26cc
modified

Who changed what in which revision?

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ajeet3004 0:f4b9f14b26cc 1 /*************************************************************************************************** PROGRAM FOR CONFIGURATION OF SLAVE DEVICE ******************************************************************************/
ajeet3004 0:f4b9f14b26cc 2 #include "mbed.h"
ajeet3004 0:f4b9f14b26cc 3 #include "string.h"
ajeet3004 0:f4b9f14b26cc 4 #include "udaes.h"
ajeet3004 0:f4b9f14b26cc 5 #include "crc.h"
ajeet3004 0:f4b9f14b26cc 6
ajeet3004 0:f4b9f14b26cc 7 #include<sstream>
ajeet3004 0:f4b9f14b26cc 8 #include "AES.h"
ajeet3004 0:f4b9f14b26cc 9
ajeet3004 0:f4b9f14b26cc 10 Serial pc(USBTX,USBRX); //Serial Configuration for USB serial
ajeet3004 0:f4b9f14b26cc 11 Serial device(PA_13,PA_14); //Serial Configuration for Bluetooth
ajeet3004 0:f4b9f14b26cc 12 DigitalOut myled(D13); //Indicator to show status of the command coming from gateway
ajeet3004 0:f4b9f14b26cc 13 AnalogIn ldr(A0); //Reading from LDR
ajeet3004 0:f4b9f14b26cc 14 AnalogIn temp(A1);
ajeet3004 0:f4b9f14b26cc 15 int compare_strings(char [], char []); //Function for comparing two strings to compare with the command coming from the gateway
ajeet3004 0:f4b9f14b26cc 16 void dataPattern(char [],int); //Function for Dataformat of the data to be sent
ajeet3004 0:f4b9f14b26cc 17 void bluetooth();
ajeet3004 0:f4b9f14b26cc 18 int flag,flag1,count=0,w1=0;
ajeet3004 0:f4b9f14b26cc 19 char ackmsgon[7]="LED ON"; //Response for the status of the LED
ajeet3004 0:f4b9f14b26cc 20 char ackmsgoff[8]="LED OFF"; //Response for the status of the LED
ajeet3004 0:f4b9f14b26cc 21 char sendData[21]; //Data to be sent to the gateway with the encrypted format of the response
ajeet3004 0:f4b9f14b26cc 22 char message2[18]; //Received formatted messsage from the gateway
ajeet3004 0:f4b9f14b26cc 23 char message3[18];
ajeet3004 0:f4b9f14b26cc 24 char encryptedData[16]; //Encrypted message from the gateway
ajeet3004 0:f4b9f14b26cc 25 char ldrsensor[9]; //Reading from the LDR
ajeet3004 0:f4b9f14b26cc 26 char tempsensor[9];
ajeet3004 0:f4b9f14b26cc 27 char* encrypt;
ajeet3004 0:f4b9f14b26cc 28 char* decrypt;
ajeet3004 0:f4b9f14b26cc 29 char crc1[3];
ajeet3004 0:f4b9f14b26cc 30 int final[26];
ajeet3004 0:f4b9f14b26cc 31 char dataReceive[30];
ajeet3004 0:f4b9f14b26cc 32 //Main function
ajeet3004 0:f4b9f14b26cc 33 int main()
ajeet3004 0:f4b9f14b26cc 34 {
ajeet3004 0:f4b9f14b26cc 35
ajeet3004 0:f4b9f14b26cc 36 int x,p2=0;
ajeet3004 0:f4b9f14b26cc 37 char command_buf[] = {'O','N'}; //Data for the comparision with the command received from the gateway
ajeet3004 0:f4b9f14b26cc 38 char command_buf1[] = {'O','F','F'}; //Data for the comaprision with the command received from the gateway
ajeet3004 0:f4b9f14b26cc 39 myled = 1;
ajeet3004 0:f4b9f14b26cc 40 while(1) {
ajeet3004 0:f4b9f14b26cc 41 // count=0;
ajeet3004 0:f4b9f14b26cc 42 float ldrout = ldr.read(); //Read the LDR
ajeet3004 0:f4b9f14b26cc 43 float tempout = temp.read();
ajeet3004 0:f4b9f14b26cc 44 float tempC = ((tempout*3.3)-0.600)*100.0;
ajeet3004 0:f4b9f14b26cc 45 // int err = sensor.readData();
ajeet3004 0:f4b9f14b26cc 46 // pc.printf("\nTemperature is : %f",tempC);
ajeet3004 0:f4b9f14b26cc 47 // wait(1);
ajeet3004 0:f4b9f14b26cc 48 if(device.readable()) { // Check whether the data is received BLE or not
ajeet3004 0:f4b9f14b26cc 49 bluetooth(); //Receive the message and store it in message2
ajeet3004 0:f4b9f14b26cc 50 device.gets(dataReceive,19);
ajeet3004 0:f4b9f14b26cc 51 pc.printf("The data received is : %s",dataReceive); //Print the message2
ajeet3004 0:f4b9f14b26cc 52
ajeet3004 0:f4b9f14b26cc 53
ajeet3004 0:f4b9f14b26cc 54 for(x=0; x<19; x++) {
ajeet3004 0:f4b9f14b26cc 55 message3[x]=dataReceive[x]; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
ajeet3004 0:f4b9f14b26cc 56 }
ajeet3004 0:f4b9f14b26cc 57 for(x=0; x<30; x++) {
ajeet3004 0:f4b9f14b26cc 58 dataReceive[x]='\0'; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
ajeet3004 0:f4b9f14b26cc 59 }
ajeet3004 0:f4b9f14b26cc 60
ajeet3004 0:f4b9f14b26cc 61 int flg = crcCheck_receive(message3); //Do the CRC check for the message3
ajeet3004 0:f4b9f14b26cc 62 pc.printf("\n The flag value is : %d",flg); //Print the status of the flg which the output of the crcCheck_receive
ajeet3004 0:f4b9f14b26cc 63 if(flg==0) { //if flg is 0
ajeet3004 0:f4b9f14b26cc 64 pc.printf("\nCRC operation is successful"); //print CRC operation is successful
ajeet3004 0:f4b9f14b26cc 65 for(x=0; x<16; x++) {
ajeet3004 0:f4b9f14b26cc 66 encryptedData[x]=message3[x]; //Extract the encrypted data from the message3 and store it in encryptedData
ajeet3004 0:f4b9f14b26cc 67 }
ajeet3004 0:f4b9f14b26cc 68 decrypt = decryptData(encryptedData); //Decrypt the encryptedData and store it in decrypt
ajeet3004 0:f4b9f14b26cc 69 flag = compare_strings(decrypt, command_buf); //Compare the decrypted the message for "ON" condition and store the status in flag
ajeet3004 0:f4b9f14b26cc 70 flag1 = compare_strings(decrypt, command_buf1); //Compare the decrypted the message for "OFF" condition and store the status in flag1
ajeet3004 0:f4b9f14b26cc 71
ajeet3004 0:f4b9f14b26cc 72 //if message1 is ON
ajeet3004 0:f4b9f14b26cc 73 if (flag == 1) {
ajeet3004 0:f4b9f14b26cc 74 myled = 0; //Turn ON the LED
ajeet3004 0:f4b9f14b26cc 75 // wait_ms(1); //Wait for 1 second
ajeet3004 0:f4b9f14b26cc 76 encrypt=encryptData(ackmsgon);
ajeet3004 0:f4b9f14b26cc 77 //Encrypt the response
ajeet3004 0:f4b9f14b26cc 78 dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
ajeet3004 0:f4b9f14b26cc 79
ajeet3004 0:f4b9f14b26cc 80 }
ajeet3004 0:f4b9f14b26cc 81 //if message1 is OFF
ajeet3004 0:f4b9f14b26cc 82 else if(flag1==1) {
ajeet3004 0:f4b9f14b26cc 83 myled =1; //Turn OFF the LED
ajeet3004 0:f4b9f14b26cc 84 // wait_ms(10); //Wait for 1 second
ajeet3004 0:f4b9f14b26cc 85 encrypt=encryptData(ackmsgoff); //Encrypt the response
ajeet3004 0:f4b9f14b26cc 86 dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
ajeet3004 0:f4b9f14b26cc 87
ajeet3004 0:f4b9f14b26cc 88 }
ajeet3004 0:f4b9f14b26cc 89 else if(flag1==1) {
ajeet3004 0:f4b9f14b26cc 90 myled =1; //Turn OFF the LED
ajeet3004 0:f4b9f14b26cc 91 // wait_ms(10); //Wait for 1 second
ajeet3004 0:f4b9f14b26cc 92 encrypt=encryptData(ackmsgoff); //Encrypt the response
ajeet3004 0:f4b9f14b26cc 93 dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
ajeet3004 0:f4b9f14b26cc 94
ajeet3004 0:f4b9f14b26cc 95 }
ajeet3004 0:f4b9f14b26cc 96 } else {
ajeet3004 0:f4b9f14b26cc 97 pc.printf("\nCRC Operation Failed");
ajeet3004 0:f4b9f14b26cc 98 }
ajeet3004 0:f4b9f14b26cc 99 }
ajeet3004 0:f4b9f14b26cc 100
ajeet3004 0:f4b9f14b26cc 101 //if LDR reading is greater than or equal to 0.200000
ajeet3004 0:f4b9f14b26cc 102 /* else if(ldrout>0.200000) {
ajeet3004 0:f4b9f14b26cc 103 //Wait for 1 second
ajeet3004 0:f4b9f14b26cc 104 sprintf(ldrsensor,"%f",ldrout); //Convert the float format to string format
ajeet3004 0:f4b9f14b26cc 105 ldrsensor[8]='0';
ajeet3004 0:f4b9f14b26cc 106 encrypt=encryptData(ldrsensor); //Encrypt the response
ajeet3004 0:f4b9f14b26cc 107 dataPattern(encrypt,100);
ajeet3004 0:f4b9f14b26cc 108 memset(ldrsensor,'\0',sizeof(ldrsensor)); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
ajeet3004 0:f4b9f14b26cc 109 wait(5);
ajeet3004 0:f4b9f14b26cc 110 }*/
ajeet3004 0:f4b9f14b26cc 111
ajeet3004 0:f4b9f14b26cc 112 /*else if(tempC>25.000000) {
ajeet3004 0:f4b9f14b26cc 113 //Wait for 1 second
ajeet3004 0:f4b9f14b26cc 114 sprintf(tempsensor,"%f",tempout); //Convert the float format to string format
ajeet3004 0:f4b9f14b26cc 115 //tempsensor[8]='0';
ajeet3004 0:f4b9f14b26cc 116 encrypt=encryptData(tempsensor); //Encrypt the response
ajeet3004 0:f4b9f14b26cc 117 dataPattern(encrypt,100); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
ajeet3004 0:f4b9f14b26cc 118 memset(tempsensor,'\0',sizeof(tempsensor));
ajeet3004 0:f4b9f14b26cc 119 wait(5);
ajeet3004 0:f4b9f14b26cc 120 }*/
ajeet3004 0:f4b9f14b26cc 121 }
ajeet3004 0:f4b9f14b26cc 122
ajeet3004 0:f4b9f14b26cc 123
ajeet3004 0:f4b9f14b26cc 124
ajeet3004 0:f4b9f14b26cc 125
ajeet3004 0:f4b9f14b26cc 126 }
ajeet3004 0:f4b9f14b26cc 127 //Function for the data pattern format
ajeet3004 0:f4b9f14b26cc 128 void dataPattern(char* encack,int time)
ajeet3004 0:f4b9f14b26cc 129 {
ajeet3004 0:f4b9f14b26cc 130 // v3=0;
ajeet3004 0:f4b9f14b26cc 131 int v2=0;
ajeet3004 0:f4b9f14b26cc 132 int w2;
ajeet3004 0:f4b9f14b26cc 133 //Adding the start bit[0]
ajeet3004 0:f4b9f14b26cc 134
ajeet3004 0:f4b9f14b26cc 135 //Adding the whole encrypted data
ajeet3004 0:f4b9f14b26cc 136 /* for(int w=2;w<18;w++)
ajeet3004 0:f4b9f14b26cc 137 {
ajeet3004 0:f4b9f14b26cc 138 sendData[w]=encack[v3];
ajeet3004 0:f4b9f14b26cc 139 v3++;
ajeet3004 0:f4b9f14b26cc 140 }*/
ajeet3004 0:f4b9f14b26cc 141
ajeet3004 0:f4b9f14b26cc 142
ajeet3004 0:f4b9f14b26cc 143
ajeet3004 0:f4b9f14b26cc 144 char* crctr = crcCheck_transmit(encack); //Genrating the CRC bits from the encrypted data and store it in crctr
ajeet3004 0:f4b9f14b26cc 145
ajeet3004 0:f4b9f14b26cc 146
ajeet3004 0:f4b9f14b26cc 147 for(w2=0; w2<18; w2++) {
ajeet3004 0:f4b9f14b26cc 148 sendData[w2]=crctr[w2]; //Storing the CRC along with the encrypted data in the sendData
ajeet3004 0:f4b9f14b26cc 149
ajeet3004 0:f4b9f14b26cc 150 }
ajeet3004 0:f4b9f14b26cc 151 pc.printf("\n The Data should be sent is : %s\n",sendData); //Print the whole format of the data combined with encrypted data
ajeet3004 0:f4b9f14b26cc 152
ajeet3004 0:f4b9f14b26cc 153
ajeet3004 0:f4b9f14b26cc 154 //For loop for sending the whole data via BLE
ajeet3004 0:f4b9f14b26cc 155 for(int k=0; k<19; k++) {
ajeet3004 0:f4b9f14b26cc 156 wait_ms(time); //Wait for 20 milisecond
ajeet3004 0:f4b9f14b26cc 157 pc.putc(sendData[k]); //Print the character
ajeet3004 0:f4b9f14b26cc 158 device.putc(sendData[k]); //Send the character via BLE
ajeet3004 0:f4b9f14b26cc 159 }
ajeet3004 0:f4b9f14b26cc 160
ajeet3004 0:f4b9f14b26cc 161 }
ajeet3004 0:f4b9f14b26cc 162 void bluetooth() //bluetooth function for reading data from slave device
ajeet3004 0:f4b9f14b26cc 163 {
ajeet3004 0:f4b9f14b26cc 164 int z=0;
ajeet3004 0:f4b9f14b26cc 165 while(1) {
ajeet3004 0:f4b9f14b26cc 166 if(device.readable()) {
ajeet3004 0:f4b9f14b26cc 167 char c=device.getc();
ajeet3004 0:f4b9f14b26cc 168 if(c=='\0') { // if char is null then return to main function where it was called
ajeet3004 0:f4b9f14b26cc 169 z=0;
ajeet3004 0:f4b9f14b26cc 170 return;
ajeet3004 0:f4b9f14b26cc 171 } else {
ajeet3004 0:f4b9f14b26cc 172 dataReceive[z]=c; //
ajeet3004 0:f4b9f14b26cc 173 printf("%c",c);
ajeet3004 0:f4b9f14b26cc 174 z++;
ajeet3004 0:f4b9f14b26cc 175 }
ajeet3004 0:f4b9f14b26cc 176 }
ajeet3004 0:f4b9f14b26cc 177 }
ajeet3004 0:f4b9f14b26cc 178 }
ajeet3004 0:f4b9f14b26cc 179 //Function to compare two strings
ajeet3004 0:f4b9f14b26cc 180 int compare_strings(char a[], char b[])
ajeet3004 0:f4b9f14b26cc 181 {
ajeet3004 0:f4b9f14b26cc 182 int c = 0; //Initial count=0
ajeet3004 0:f4b9f14b26cc 183 int n=strlen(decrypt); //Size of the decrypted message
ajeet3004 0:f4b9f14b26cc 184
ajeet3004 0:f4b9f14b26cc 185 //Run the loop till the size is less than n
ajeet3004 0:f4b9f14b26cc 186 for(int s=0; s<n; s++) {
ajeet3004 0:f4b9f14b26cc 187 if(a[s] == b[s]) //if both the data is matched in the respective location
ajeet3004 0:f4b9f14b26cc 188 c++; //Increment c
ajeet3004 0:f4b9f14b26cc 189 else //if both the data is not matched in the respective location
ajeet3004 0:f4b9f14b26cc 190 break; //Break the loop
ajeet3004 0:f4b9f14b26cc 191 }
ajeet3004 0:f4b9f14b26cc 192
ajeet3004 0:f4b9f14b26cc 193
ajeet3004 0:f4b9f14b26cc 194 if(c==n) { //If c is equal to n
ajeet3004 0:f4b9f14b26cc 195 return 1; //return 1
ajeet3004 0:f4b9f14b26cc 196 } else //If c is not equal to n
ajeet3004 0:f4b9f14b26cc 197 return 0; //Return 0
ajeet3004 0:f4b9f14b26cc 198 }