ajeet prajapati / Mbed 2 deprecated AESslave_modified_test

IOT client program

Dependencies:   AES CRC UDAES mbed

main.cpp@0:236079d2b0db, 2017-06-20 (annotated)

Committer:
ajeet3004
Date:
Tue Jun 20 05:40:20 2017 +0000
Revision:
0:236079d2b0db
AES client program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ajeet3004 0:236079d2b0db 1 /*************************************************************************************************** PROGRAM FOR CONFIGURATION OF SLAVE DEVICE ******************************************************************************/
ajeet3004 0:236079d2b0db 2 #include "mbed.h"
ajeet3004 0:236079d2b0db 3 #include "string.h"
ajeet3004 0:236079d2b0db 4 #include "udaes.h"
ajeet3004 0:236079d2b0db 5 #include "crc.h"
ajeet3004 0:236079d2b0db 6
ajeet3004 0:236079d2b0db 7 #include<sstream>
ajeet3004 0:236079d2b0db 8 #include "AES.h"
ajeet3004 0:236079d2b0db 9
ajeet3004 0:236079d2b0db 10 Serial pc(USBTX,USBRX); //Serial Configuration for USB serial
ajeet3004 0:236079d2b0db 11 Serial device(PA_13,PA_14); //Serial Configuration for Bluetooth
ajeet3004 0:236079d2b0db 12 DigitalOut myled(D13); //Indicator to show status of the command coming from gateway
ajeet3004 0:236079d2b0db 13 AnalogIn ldr(A0); //Reading from LDR
ajeet3004 0:236079d2b0db 14 AnalogIn temp(A1);
ajeet3004 0:236079d2b0db 15 int compare_strings(char [], char []); //Function for comparing two strings to compare with the command coming from the gateway
ajeet3004 0:236079d2b0db 16 void dataPattern(char [],int); //Function for Dataformat of the data to be sent
ajeet3004 0:236079d2b0db 17 void bluetooth();
ajeet3004 0:236079d2b0db 18 int flag,flag1,count=0,w1=0;
ajeet3004 0:236079d2b0db 19 char ackmsgon[7]="LED ON"; //Response for the status of the LED
ajeet3004 0:236079d2b0db 20 char ackmsgoff[8]="LED OFF"; //Response for the status of the LED
ajeet3004 0:236079d2b0db 21 char sendData[21]; //Data to be sent to the gateway with the encrypted format of the response
ajeet3004 0:236079d2b0db 22 char message2[18]; //Received formatted messsage from the gateway
ajeet3004 0:236079d2b0db 23 char message3[18];
ajeet3004 0:236079d2b0db 24 char encryptedData[16]; //Encrypted message from the gateway
ajeet3004 0:236079d2b0db 25 char ldrsensor[9]; //Reading from the LDR
ajeet3004 0:236079d2b0db 26 char tempsensor[9];
ajeet3004 0:236079d2b0db 27 char* encrypt;
ajeet3004 0:236079d2b0db 28 char* decrypt;
ajeet3004 0:236079d2b0db 29 char crc1[3];
ajeet3004 0:236079d2b0db 30 int final[26];
ajeet3004 0:236079d2b0db 31 char dataReceive[30];
ajeet3004 0:236079d2b0db 32 char crc_failed[] = "FCRC";
ajeet3004 0:236079d2b0db 33 //Main function
ajeet3004 0:236079d2b0db 34 int main()
ajeet3004 0:236079d2b0db 35 {
ajeet3004 0:236079d2b0db 36
ajeet3004 0:236079d2b0db 37 int x,p2=0;
ajeet3004 0:236079d2b0db 38 char command_buf[] = {'O','N'}; //Data for the comparision with the command received from the gateway
ajeet3004 0:236079d2b0db 39 char command_buf1[] = {'O','F','F'}; //Data for the comaprision with the command received from the gateway
ajeet3004 0:236079d2b0db 40 myled = 1;
ajeet3004 0:236079d2b0db 41 while(1) {
ajeet3004 0:236079d2b0db 42 // count=0;
ajeet3004 0:236079d2b0db 43 float ldrout = ldr.read(); //Read the LDR
ajeet3004 0:236079d2b0db 44 float tempout = temp.read();
ajeet3004 0:236079d2b0db 45 float tempC = ((tempout*3.3)-0.600)*100.0;
ajeet3004 0:236079d2b0db 46 // int err = sensor.readData();
ajeet3004 0:236079d2b0db 47 // pc.printf("\nTemperature is : %f",tempC);
ajeet3004 0:236079d2b0db 48 // wait(1);
ajeet3004 0:236079d2b0db 49 if(device.readable()) { // Check whether the data is received BLE or not
ajeet3004 0:236079d2b0db 50 bluetooth(); //Receive the message and store it in message2
ajeet3004 0:236079d2b0db 51 // device.gets(dataReceive,19);
ajeet3004 0:236079d2b0db 52 pc.printf("The data received is : %s",dataReceive); //Print the message2
ajeet3004 0:236079d2b0db 53
ajeet3004 0:236079d2b0db 54 if(dataReceive[0]=='F')
ajeet3004 0:236079d2b0db 55 {
ajeet3004 0:236079d2b0db 56 for(int k=0; k<19; k++) {
ajeet3004 0:236079d2b0db 57 wait_ms(50); //Wait for 20 milisecond
ajeet3004 0:236079d2b0db 58 pc.putc(sendData[k]); //Print the character
ajeet3004 0:236079d2b0db 59 device.putc(sendData[k]); //Send the character via BLE
ajeet3004 0:236079d2b0db 60 }
ajeet3004 0:236079d2b0db 61 }
ajeet3004 0:236079d2b0db 62 else{
ajeet3004 0:236079d2b0db 63
ajeet3004 0:236079d2b0db 64 for(x=0; x<19; x++) {
ajeet3004 0:236079d2b0db 65 message3[x]=dataReceive[x]; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
ajeet3004 0:236079d2b0db 66 }
ajeet3004 0:236079d2b0db 67 for(x=0; x<30; x++) {
ajeet3004 0:236079d2b0db 68 dataReceive[x]='\0'; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
ajeet3004 0:236079d2b0db 69 }
ajeet3004 0:236079d2b0db 70
ajeet3004 0:236079d2b0db 71 int flg = crcCheck_receive(message3); //Do the CRC check for the message3
ajeet3004 0:236079d2b0db 72 pc.printf("\n The flag value is : %d",flg); //Print the status of the flg which the output of the crcCheck_receive
ajeet3004 0:236079d2b0db 73 if(flg==0) { //if flg is 0
ajeet3004 0:236079d2b0db 74 pc.printf("\nCRC operation is successful"); //print CRC operation is successful
ajeet3004 0:236079d2b0db 75 for(x=0; x<16; x++) {
ajeet3004 0:236079d2b0db 76 encryptedData[x]=message3[x]; //Extract the encrypted data from the message3 and store it in encryptedData
ajeet3004 0:236079d2b0db 77 }
ajeet3004 0:236079d2b0db 78 decrypt = decryptData(encryptedData); //Decrypt the encryptedData and store it in decrypt
ajeet3004 0:236079d2b0db 79 flag = compare_strings(decrypt, command_buf); //Compare the decrypted the message for "ON" condition and store the status in flag
ajeet3004 0:236079d2b0db 80 flag1 = compare_strings(decrypt, command_buf1); //Compare the decrypted the message for "OFF" condition and store the status in flag1
ajeet3004 0:236079d2b0db 81
ajeet3004 0:236079d2b0db 82 //if message1 is ON
ajeet3004 0:236079d2b0db 83 if (flag == 1) {
ajeet3004 0:236079d2b0db 84 myled = 0; //Turn ON the LED
ajeet3004 0:236079d2b0db 85 // wait_ms(1); //Wait for 1 second
ajeet3004 0:236079d2b0db 86 encrypt=encryptData(ackmsgon);
ajeet3004 0:236079d2b0db 87 //Encrypt the response
ajeet3004 0:236079d2b0db 88 dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
ajeet3004 0:236079d2b0db 89
ajeet3004 0:236079d2b0db 90 }
ajeet3004 0:236079d2b0db 91 //if message1 is OFF
ajeet3004 0:236079d2b0db 92 else if(flag1==1) {
ajeet3004 0:236079d2b0db 93 myled =1; //Turn OFF the LED
ajeet3004 0:236079d2b0db 94 // wait_ms(10); //Wait for 1 second
ajeet3004 0:236079d2b0db 95 encrypt=encryptData(ackmsgoff); //Encrypt the response
ajeet3004 0:236079d2b0db 96 dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
ajeet3004 0:236079d2b0db 97
ajeet3004 0:236079d2b0db 98 }
ajeet3004 0:236079d2b0db 99
ajeet3004 0:236079d2b0db 100 } else {
ajeet3004 0:236079d2b0db 101 pc.printf("\nCRC Operation Failed");
ajeet3004 0:236079d2b0db 102 wait(3);
ajeet3004 0:236079d2b0db 103 for(int k1=0;k1<5;k1++)
ajeet3004 0:236079d2b0db 104 {
ajeet3004 0:236079d2b0db 105 wait_ms(50);
ajeet3004 0:236079d2b0db 106 pc.putc(crc_failed[k1]);
ajeet3004 0:236079d2b0db 107 device.putc(crc_failed[k1]);
ajeet3004 0:236079d2b0db 108 }
ajeet3004 0:236079d2b0db 109 }
ajeet3004 0:236079d2b0db 110 }
ajeet3004 0:236079d2b0db 111 }
ajeet3004 0:236079d2b0db 112
ajeet3004 0:236079d2b0db 113 //if LDR reading is greater than or equal to 0.200000
ajeet3004 0:236079d2b0db 114 /* else if(ldrout>0.200000) {
ajeet3004 0:236079d2b0db 115 //Wait for 1 second
ajeet3004 0:236079d2b0db 116 sprintf(ldrsensor,"%f",ldrout); //Convert the float format to string format
ajeet3004 0:236079d2b0db 117 ldrsensor[8]='0';
ajeet3004 0:236079d2b0db 118 encrypt=encryptData(ldrsensor); //Encrypt the response
ajeet3004 0:236079d2b0db 119 dataPattern(encrypt,100);
ajeet3004 0:236079d2b0db 120 memset(ldrsensor,'\0',sizeof(ldrsensor)); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
ajeet3004 0:236079d2b0db 121 wait(5 );
ajeet3004 0:236079d2b0db 122 }*/
ajeet3004 0:236079d2b0db 123
ajeet3004 0:236079d2b0db 124 else if(tempC>70.000000) {
ajeet3004 0:236079d2b0db 125 //Wait for 1 second
ajeet3004 0:236079d2b0db 126 sprintf(tempsensor,"%f",tempC); //Convert the float format to string format
ajeet3004 0:236079d2b0db 127 //tempsensor[8]='0';
ajeet3004 0:236079d2b0db 128 encrypt=encryptData(tempsensor); //Encrypt the response
ajeet3004 0:236079d2b0db 129 dataPattern(encrypt,100); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
ajeet3004 0:236079d2b0db 130 memset(tempsensor,'\0',sizeof(tempsensor));
ajeet3004 0:236079d2b0db 131 wait(5);
ajeet3004 0:236079d2b0db 132 }
ajeet3004 0:236079d2b0db 133
ajeet3004 0:236079d2b0db 134
ajeet3004 0:236079d2b0db 135 }
ajeet3004 0:236079d2b0db 136
ajeet3004 0:236079d2b0db 137
ajeet3004 0:236079d2b0db 138
ajeet3004 0:236079d2b0db 139
ajeet3004 0:236079d2b0db 140 }
ajeet3004 0:236079d2b0db 141 //Function for the data pattern format
ajeet3004 0:236079d2b0db 142 void dataPattern(char* encack,int time)
ajeet3004 0:236079d2b0db 143 {
ajeet3004 0:236079d2b0db 144 // v3=0;
ajeet3004 0:236079d2b0db 145 int v2=0;
ajeet3004 0:236079d2b0db 146 int w2;
ajeet3004 0:236079d2b0db 147 //Adding the start bit[0]
ajeet3004 0:236079d2b0db 148
ajeet3004 0:236079d2b0db 149 //Adding the whole encrypted data
ajeet3004 0:236079d2b0db 150 /* for(int w=2;w<18;w++)
ajeet3004 0:236079d2b0db 151 {
ajeet3004 0:236079d2b0db 152 sendData[w]=encack[v3];
ajeet3004 0:236079d2b0db 153 v3++;
ajeet3004 0:236079d2b0db 154 }*/
ajeet3004 0:236079d2b0db 155
ajeet3004 0:236079d2b0db 156
ajeet3004 0:236079d2b0db 157
ajeet3004 0:236079d2b0db 158 char* crctr = crcCheck_transmit(encack); //Genrating the CRC bits from the encrypted data and store it in crctr
ajeet3004 0:236079d2b0db 159
ajeet3004 0:236079d2b0db 160
ajeet3004 0:236079d2b0db 161 for(w2=0; w2<18; w2++) {
ajeet3004 0:236079d2b0db 162 sendData[w2]=crctr[w2]; //Storing the CRC along with the encrypted data in the sendData
ajeet3004 0:236079d2b0db 163
ajeet3004 0:236079d2b0db 164 }
ajeet3004 0:236079d2b0db 165 pc.printf("\n The Data should be sent is : %s\n",sendData); //Print the whole format of the data combined with encrypted data
ajeet3004 0:236079d2b0db 166
ajeet3004 0:236079d2b0db 167
ajeet3004 0:236079d2b0db 168 //For loop for sending the whole data via BLE
ajeet3004 0:236079d2b0db 169 for(int k=0; k<19; k++) {
ajeet3004 0:236079d2b0db 170 wait_ms(time); //Wait for 20 milisecond
ajeet3004 0:236079d2b0db 171 pc.putc(sendData[k]); //Print the character
ajeet3004 0:236079d2b0db 172 device.putc(sendData[k]); //Send the character via BLE
ajeet3004 0:236079d2b0db 173 }
ajeet3004 0:236079d2b0db 174
ajeet3004 0:236079d2b0db 175
ajeet3004 0:236079d2b0db 176 }
ajeet3004 0:236079d2b0db 177 void bluetooth() //bluetooth function for reading data from slave device
ajeet3004 0:236079d2b0db 178 {
ajeet3004 0:236079d2b0db 179 int z=0;
ajeet3004 0:236079d2b0db 180 while(1) {
ajeet3004 0:236079d2b0db 181 if(device.readable()) {
ajeet3004 0:236079d2b0db 182 char c=device.getc();
ajeet3004 0:236079d2b0db 183 if(c=='\0') { // if char is null then return to main function where it was called
ajeet3004 0:236079d2b0db 184 z=0;
ajeet3004 0:236079d2b0db 185 return;
ajeet3004 0:236079d2b0db 186 } else {
ajeet3004 0:236079d2b0db 187 dataReceive[z]=c; //
ajeet3004 0:236079d2b0db 188 printf("%c",c);
ajeet3004 0:236079d2b0db 189 z++;
ajeet3004 0:236079d2b0db 190 }
ajeet3004 0:236079d2b0db 191 }
ajeet3004 0:236079d2b0db 192 }
ajeet3004 0:236079d2b0db 193 }
ajeet3004 0:236079d2b0db 194 //Function to compare two strings
ajeet3004 0:236079d2b0db 195 int compare_strings(char a[], char b[])
ajeet3004 0:236079d2b0db 196 {
ajeet3004 0:236079d2b0db 197 int c = 0; //Initial count=0
ajeet3004 0:236079d2b0db 198 int n=strlen(decrypt); //Size of the decrypted message
ajeet3004 0:236079d2b0db 199
ajeet3004 0:236079d2b0db 200 //Run the loop till the size is less than n
ajeet3004 0:236079d2b0db 201 for(int s=0; s<n; s++) {
ajeet3004 0:236079d2b0db 202 if(a[s] == b[s]) //if both the data is matched in the respective location
ajeet3004 0:236079d2b0db 203 c++; //Increment c
ajeet3004 0:236079d2b0db 204 else //if both the data is not matched in the respective location
ajeet3004 0:236079d2b0db 205 break; //Break the loop
ajeet3004 0:236079d2b0db 206 }
ajeet3004 0:236079d2b0db 207
ajeet3004 0:236079d2b0db 208
ajeet3004 0:236079d2b0db 209 if(c==n) { //If c is equal to n
ajeet3004 0:236079d2b0db 210 return 1; //return 1
ajeet3004 0:236079d2b0db 211 } else //If c is not equal to n
ajeet3004 0:236079d2b0db 212 return 0; //Return 0
ajeet3004 0:236079d2b0db 213 }