ajeet prajapati
modified
Dependencies: AES CRC_1 UDAES_1 mbed
Diff: main.cpp
- Revision:
- 0:f4b9f14b26cc
diff -r 000000000000 -r f4b9f14b26cc main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Sep 27 10:18:18 2017 +0000
@@ -0,0 +1,198 @@
+/*************************************************************************************************** PROGRAM FOR CONFIGURATION OF SLAVE DEVICE ******************************************************************************/
+#include "mbed.h"
+#include "string.h"
+#include "udaes.h"
+#include "crc.h"
+
+#include<sstream>
+#include "AES.h"
+
+Serial pc(USBTX,USBRX); //Serial Configuration for USB serial
+Serial device(PA_13,PA_14); //Serial Configuration for Bluetooth
+DigitalOut myled(D13); //Indicator to show status of the command coming from gateway
+AnalogIn ldr(A0); //Reading from LDR
+AnalogIn temp(A1);
+int compare_strings(char [], char []); //Function for comparing two strings to compare with the command coming from the gateway
+void dataPattern(char [],int); //Function for Dataformat of the data to be sent
+void bluetooth();
+int flag,flag1,count=0,w1=0;
+char ackmsgon[7]="LED ON"; //Response for the status of the LED
+char ackmsgoff[8]="LED OFF"; //Response for the status of the LED
+char sendData[21]; //Data to be sent to the gateway with the encrypted format of the response
+char message2[18]; //Received formatted messsage from the gateway
+char message3[18];
+char encryptedData[16]; //Encrypted message from the gateway
+char ldrsensor[9]; //Reading from the LDR
+char tempsensor[9];
+char* encrypt;
+char* decrypt;
+char crc1[3];
+int final[26];
+char dataReceive[30];
+//Main function
+int main()
+{
+
+ int x,p2=0;
+ char command_buf[] = {'O','N'}; //Data for the comparision with the command received from the gateway
+ char command_buf1[] = {'O','F','F'}; //Data for the comaprision with the command received from the gateway
+ myled = 1;
+ while(1) {
+ // count=0;
+ float ldrout = ldr.read(); //Read the LDR
+ float tempout = temp.read();
+ float tempC = ((tempout*3.3)-0.600)*100.0;
+ // int err = sensor.readData();
+ // pc.printf("\nTemperature is : %f",tempC);
+ // wait(1);
+ if(device.readable()) { // Check whether the data is received BLE or not
+ bluetooth(); //Receive the message and store it in message2
+ device.gets(dataReceive,19);
+ pc.printf("The data received is : %s",dataReceive); //Print the message2
+
+
+ for(x=0; x<19; x++) {
+ message3[x]=dataReceive[x]; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
+ }
+ for(x=0; x<30; x++) {
+ dataReceive[x]='\0'; //Extract the exact encrypted data with CRC bytes from message2 and store it in message3
+ }
+
+ int flg = crcCheck_receive(message3); //Do the CRC check for the message3
+ pc.printf("\n The flag value is : %d",flg); //Print the status of the flg which the output of the crcCheck_receive
+ if(flg==0) { //if flg is 0
+ pc.printf("\nCRC operation is successful"); //print CRC operation is successful
+ for(x=0; x<16; x++) {
+ encryptedData[x]=message3[x]; //Extract the encrypted data from the message3 and store it in encryptedData
+ }
+ decrypt = decryptData(encryptedData); //Decrypt the encryptedData and store it in decrypt
+ flag = compare_strings(decrypt, command_buf); //Compare the decrypted the message for "ON" condition and store the status in flag
+ flag1 = compare_strings(decrypt, command_buf1); //Compare the decrypted the message for "OFF" condition and store the status in flag1
+
+ //if message1 is ON
+ if (flag == 1) {
+ myled = 0; //Turn ON the LED
+ // wait_ms(1); //Wait for 1 second
+ encrypt=encryptData(ackmsgon);
+ //Encrypt the response
+ dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
+
+ }
+ //if message1 is OFF
+ else if(flag1==1) {
+ myled =1; //Turn OFF the LED
+ // wait_ms(10); //Wait for 1 second
+ encrypt=encryptData(ackmsgoff); //Encrypt the response
+ dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
+
+ }
+ else if(flag1==1) {
+ myled =1; //Turn OFF the LED
+ // wait_ms(10); //Wait for 1 second
+ encrypt=encryptData(ackmsgoff); //Encrypt the response
+ dataPattern(encrypt,50); //Create the datapattern and combine it with the encrypted repsonse and send it to the gateway
+
+ }
+ } else {
+ pc.printf("\nCRC Operation Failed");
+ }
+ }
+
+ //if LDR reading is greater than or equal to 0.200000
+ /* else if(ldrout>0.200000) {
+ //Wait for 1 second
+ sprintf(ldrsensor,"%f",ldrout); //Convert the float format to string format
+ ldrsensor[8]='0';
+ encrypt=encryptData(ldrsensor); //Encrypt the response
+ dataPattern(encrypt,100);
+ memset(ldrsensor,'\0',sizeof(ldrsensor)); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
+ wait(5);
+ }*/
+
+ /*else if(tempC>25.000000) {
+ //Wait for 1 second
+ sprintf(tempsensor,"%f",tempout); //Convert the float format to string format
+ //tempsensor[8]='0';
+ encrypt=encryptData(tempsensor); //Encrypt the response
+ dataPattern(encrypt,100); //Create the datapattern and combine it with the encrypted LDR reading and send it to the gateway
+ memset(tempsensor,'\0',sizeof(tempsensor));
+ wait(5);
+ }*/
+ }
+
+
+
+
+}
+//Function for the data pattern format
+void dataPattern(char* encack,int time)
+{
+ // v3=0;
+ int v2=0;
+ int w2;
+ //Adding the start bit[0]
+
+ //Adding the whole encrypted data
+ /* for(int w=2;w<18;w++)
+ {
+ sendData[w]=encack[v3];
+ v3++;
+ }*/
+
+
+
+ char* crctr = crcCheck_transmit(encack); //Genrating the CRC bits from the encrypted data and store it in crctr
+
+
+ for(w2=0; w2<18; w2++) {
+ sendData[w2]=crctr[w2]; //Storing the CRC along with the encrypted data in the sendData
+
+ }
+ pc.printf("\n The Data should be sent is : %s\n",sendData); //Print the whole format of the data combined with encrypted data
+
+
+ //For loop for sending the whole data via BLE
+ for(int k=0; k<19; k++) {
+ wait_ms(time); //Wait for 20 milisecond
+ pc.putc(sendData[k]); //Print the character
+ device.putc(sendData[k]); //Send the character via BLE
+ }
+
+}
+void bluetooth() //bluetooth function for reading data from slave device
+{
+ int z=0;
+ while(1) {
+ if(device.readable()) {
+ char c=device.getc();
+ if(c=='\0') { // if char is null then return to main function where it was called
+ z=0;
+ return;
+ } else {
+ dataReceive[z]=c; //
+ printf("%c",c);
+ z++;
+ }
+ }
+ }
+}
+//Function to compare two strings
+int compare_strings(char a[], char b[])
+{
+ int c = 0; //Initial count=0
+ int n=strlen(decrypt); //Size of the decrypted message
+
+ //Run the loop till the size is less than n
+ for(int s=0; s<n; s++) {
+ if(a[s] == b[s]) //if both the data is matched in the respective location
+ c++; //Increment c
+ else //if both the data is not matched in the respective location
+ break; //Break the loop
+ }
+
+
+ if(c==n) { //If c is equal to n
+ return 1; //return 1
+ } else //If c is not equal to n
+ return 0; //Return 0
+}