I am connecting a sensor to android device through arduino. I need to encrypt my sensor data and then send it to android device. But when I include aes128_enc_single(key, temp), It gives an error and said "aes128_enc_single' was not declared in this scope "
What should I do for this?
I have included AESLib.h library
My sample code is
#include <SoftwareSerial.h>
#include <Adafruit_Sensor.h>
#include <AESLib.h>
uint8_t key[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};
SoftwareSerial blue(2,3);
int i = 0;
float temp = 0;
void setup() {
Serial.begin(9600);
blue.begin(9600);
}
void loop() {
i = analogRead(A0);
temp = (i/1024.0)*500;
Serial.println(temp);
aes128_enc_single(key, temp);
Serial.print("encrypted:");
Serial.println(temp);
blue.print("Encrypted Temperature: ");
blue.println(temp);
delay(1000);
}
Related
First of all sorry for my bad english and my programming skills... im still a beginner. I have a problem implementing the example code into my project. The example code for Datalogging on my SD-Card works. So there are no wiring faults.. Implementing this working code in my project, the arduino cant find the text data and i dont know why. can anybody help me ?
im working with an arduino nano V3. and a SPI Card Reader.
Here is what happening in the serial monitor:
Initializing SD card...card initialized.
error opening datalog.txt
Here is my Code - sorry for the used German words... but i think they wont disturb.
#include <LiquidCrystal_I2C.h>
#include "RTClib.h"
RTC_DS3231 rtc;
#include <SimpleDHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include <SPI.h>
#include <SD.h>
const int chipSelect = 10; // SD KARTE
int pinDHT22 = 2; // Kombisensor
SimpleDHT22 dht22(pinDHT22);
float temperature = 0;
float humidity = 0;
volatile float windgeschwindigkeit = 0;
unsigned long previousMillis = 0;
volatile int Impulscounter = 0; // Impulszähler für Windgeschwindigkeit
unsigned long windmillis = 0;
int a = 0;
File Datenlog;
void wind()
{
Impulscounter = Impulscounter + 1;
if( Impulscounter == 1)
{
windmillis = millis();
}
}
void setup()
{
pinMode(3, INPUT);
lcd.begin();
lcd.backlight();
Serial.begin(9600);
attachInterrupt(1, wind, RISING);
while (!Serial) { // wait for serial port to connect. Needed for native USB port only
;
}
Serial.print("Initializing SD card...");
if (!SD.begin(chipSelect)) { // see if the card is present and can be initialized:
Serial.println("Card failed, or not present");
// don't do anything more:
while (1);
}
Serial.println("card initialized.");
Datenlog = SD.open("test.txt", FILE_WRITE);
if (Datenlog){
Datenlog.print("Tag "); // ... und die Textdatei anschließend befüllt werden.
Datenlog.print("Datum ");
Datenlog.print("Uhrzeit ");
Datenlog.print("Aussentemperatur ");
Datenlog.print("Aussenfeuchtigkeit ");
Datenlog.print("Windgeschwindigkeit ");
Datenlog.print("Gehaeusetemperatur ");
Datenlog.close();
Serial.print ( "it worked");
}
else {
Serial.println("error opening datalog.txt");
}
}
I have Arduino and a Duinotech NRF24L01, I am trying to send the string "Hello world" with maniacs bug RF24 library however, I think it cannot detect the incoming RF signal.
#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
RF24 radio(7, 8); // CE, CSN
const uint64_t pipe = 0xF0F0F0F0E1L;
void setup() {
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0, pipe);
radio.startListening();
}
void loop() {
if (radio.available()) {
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text);
}
else {
Serial.println("Data was not found");
}
In the read code, it would always execute data was not found. This makes me think that maybe it does not find the RF signal at all.
Here is the code that writes the data.
#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
RF24 radio(7, 8); // CE, CSN
int text = 1;
const uint64_t pipe = 0xF0F0F0F0E1LL;
void setup() {
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(pipe);
radio.stopListening();
}
void loop() {
radio.write(&text, sizeof(text));
Serial.println("Sending Data");
delay(1000);
}
Try this
For the transmitter Instead of const uint64_t pipe = 0xF0F0F0F0E1LL; use const byte address[6] = "00001"; as the address and then have you void setup like the code below
void setup() {
radio.begin();
radio.openWritingPipe(address);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();
}
Then ensure that you have a value set for the test variable to be transmitted as below
void loop() {
const char text[] = "Hello World";
radio.write(&text, sizeof(text));
Serial.println("Sending Data");
delay(1000);
}
At the receiver end have this code running
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(7, 8); // CE, CSN
const byte address[6] = "00001";
void setup() {
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0, address);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();
}
void loop() {
if (radio.available()) {
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text); //This will print out the received value
}
}
PS: Ensure that all the connections are done to the right pins
AND you can test if the NRF24L01 chip is connected correctly by adding the code below
bool result = radio.isChipConnected ();
Serial.println (result);
it should print out a 1 to the serial monitor if the NRF24L01 chip is connected correctly
I have a sketch working with an Arduino Uno and an Ethernet Shield - and it's working fine. Now I've gotten my hands on some Arduino Uno WiFi, and I want to port the sketch from ethernet to wifi - but I've run into a wall now. Most of the guide/FAQ/help I can find is for a WiFi Shield, and not a WiFi Arduino, so I'm stuck here.
Below is my (original Ethernet) code. I can post my somewhat modified Wifi code, but I can't even compile it without errors.
// Hartmann fugtighedsmåler v 0.1
// Lavet af Jan Andreasen
// Skriver til DB på FDKTO517
#include <Ethernet.h>
#include <SPI.h>
#include <DHT.h>
#define DHTPIN 2 // Siger sig selv
#define DHTTYPE DHT11 // Typen af sensor.
float h = 0;
float t = 0;
byte mac[] = {0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02}; // Macadresse på kortet
IPAddress server(10,16,9,229); // Server adressen på SQL'en
EthernetClient client;
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
Serial.println("Starting...");
Ethernet.begin(mac);
dht.begin();
}
void loop() {
readTempHum();
delay(300000); // Loop timer i millis - 5 minutter
}
void get_request(float t, float h) {
Serial.println("Connecting to Client...");
if (client.connect(server, 10080)) {
Serial.println("--> connection ok\n");
client.print("GET /test.php?");
// Placering af PHP script til upload til DB
client.print("t="); // Temp
client.print(t);
client.print("&h="); // Fugtighed
client.print(h);
client.println(" HTTP/1.1");
client.print( "Host: " );
client.println(server);
client.println("Connection: close");
client.println();
client.println();
client.stop();
Serial.println("--> finished transmission\n");
} else {
Serial.println("--> connection failed\n");
}
}
void readTempHum() {
h = dht.readHumidity();
t = dht.readTemperature();
{
Serial.print("Humidity: ");
Serial.print(h);
Serial.print("%\t");
Serial.print("Temperature:");
Serial.print(t);
Serial.println("*C");
get_request(t,h);
}
}
I've also posted this on the Arduino Forum. I'm sorry if you see my double-post, and I'll post the solution to my problem here as well.
New sketch:
#include <Wire.h>
#include <UnoWiFiDevEd.h>
#include <DHT.h>
#define DHTPIN 4
#define DHTTYPE DHT11
float h = 0;
float t = 0;
DHT dht(DHTPIN, DHTTYPE);
void setup() {
const char* connector = "rest";
const char* server = "10.16.9.229";
const char* method = "GET";
const char* resource = "/test.php?t=";
Serial.begin(9600);
Ciao.begin();
dht.begin();
pinMode(2, INPUT);
delay(10000);
}
void loop() {
readTempHum();
// doRequest(connector, server, resource, method);
delay(300000);
}
void doRequest(const char* conn, const char* server, const char* command, const char* method, float t, float h){
CiaoData data = Ciao.write(conn, server, command, method);
}
void readTempHum() {
h = dht.readHumidity();
t = dht.readTemperature();
const char* connector = "rest";
const char* server = "10.16.9.229";
const char* method = "GET";
const char* resource = "/test.php?t=";
{
doRequest(connector, server, resource, method,t,h);
}
}
Now, I've ran into a new problem. The value from the sensor (t and h) are supposed to be output in the HTTP/GET command like this:
test.php?t=1&h=2
But I can't seem to make that work. If I try to define the resource as this
const char* resource = "/test.php?t="+t+"&h="+h;
I get an error (obviously), but if I try to declare it as a string, I the same error again.
Error:
HumidSQL3_Wifi_master:24: error: invalid operands of types 'const char [13]' and 'float' to binary 'operator+'
const char* resource = "/test.php?t="+t+"&h="+h;
Now, I hope that some of you could help me out a bit here :/
If it is the Arduino.org Arduino UNO WiFi Developer Edition, then use WiFi Link with UNO WiFi Serial1 library
Okay - so I made it work. I had to start from scratch, and with the help from Juraj (I'll accept your answer as well) it works now.
Below are the final sketch ("final", as the DHT11 sensor only were for testing purpose, as a proof-of-concept)
// Hartmann fugtighedsmåler v 0.2.2
// Lavet af Jan Andreasen
// Skriver til DB på FDKTO517
// WiFi udgave, testversion
#include <Wire.h>
#include <UnoWiFiDevEd.h>
#include <DHT.h>
#define DHTPIN 4
#define DHTTYPE DHT11
#define CONNECTOR "rest"
#define SERVER_ADDR "10.16.9.229"
float h = 0;
float t = 0;
DHT dht(DHTPIN, DHTTYPE);
void setup() {
Serial.begin(9600);
Ciao.begin();
dht.begin();
pinMode(2, INPUT); // I'm not sure if this is required, just saw it now
delay(10000); // A 10 second delay from start to initialization
}
void loop() {
readTempHum();
delay(300000); // A 5 minute delay between measurements
}
void readTempHum() {
h = dht.readHumidity(); // Reads the humidity from sensor
t = dht.readTemperature(); // Reads the temperature from sensor
String uri = "/test.php?t="; // URL to the PHP-file
uri += t; // Insert the T-value
uri +="&h=";
uri += h; // Insert the H-value
CiaoData data = Ciao.write(CONNECTOR, SERVER_ADDR, uri); // Make a basic HTTP request to the specified server using REST and the URL specified above
}
Maybe not the prettiest code you've seen, however, it works now.
My goal is to essentially spoof RSSI (Received Signal Strength Indicator) using a system of counting received packets. The idea is to have something where:
A specific number of packets is sent in a specific time from the transmitter.
Then are received at another unit and the number of packets received is counted.
The number in the counter of the receiver indicates the number of packets received at that time specific in the transmitter.
The fewer packages (counter value) that are received, the farther the sender will be.
I'm having a little trouble implementing the logic in my code however so I'd really appreciate the help. I am using Arduino Pro Mini 5V with NRF24L01+ radios and the RF24 Network library. My code is as follows:
Transmitter:
#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>
#include <Wire.h>
RF24 radio(8,9);
RF24Network network(radio);
const uint16_t home_node = 00;
const uint16_t distant_node = 01;
struct payload_t { // Structure of our payload
byte ID;
};
void setup(void) {
Serial.begin(115200);
SPI.begin();
radio.begin();
network.begin(/*channel*/ 92, /*node address*/ distant_node);
}
void loop(void) {
byte ID = 1;
for (int i = 0; i < 50; i++)
{
payload_t payload = {ID};
RF24NetworkHeader header(/*to node*/ home_node);
bool ok = network.write(header,&payload,sizeof(payload));
if (ok)
Serial.println("ok.");
else
Serial.println("failed.");
delay (300);
}
delay(15000);
}
Receiver:
#include <RF24Network.h>
#include <RF24.h>
#include <SPI.h>
#include <Wire.h>
RF24 radio(8,9);
RF24Network network(radio);
const uint16_t home_node = 00;
const uint16_t distant_node = 01;
struct payload_t {
byte ID;
};
//const unsigned long interval = 3000;
//unsigned long last_sent;
int count = 0;
void setup(void)
{
Serial.begin(115200);
SPI.begin();
radio.begin();
network.begin(/*channel*/ 92, /*node address*/ home_node);
}
void loop(void)
{
RF24NetworkHeader header;
payload_t payload;
network.update();
while ( network.available() ) { // Is there anything ready for us?
bool ok = network.read(header, &payload, sizeof(payload));
if (ok) // Non-blocking
{
count++;
Serial.println ("count=");
Serial.println (count);
}
else
Serial.println ("Failed");
}
}
I'm trying to request temperatures from my DS18B20 sensor to post on plot.ly, but it seems my loop function is only running once; after connecting to plot.ly and creating the graph, the temperature is printed once in the serial monitor and does not seem to continue! Any help is greatly appreciated. Here is my code:
#include <Adafruit_CC3000.h>
#include <ccspi.h>
#include <SPI.h>
#include <plotly_streaming_cc3000.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define WLAN_SSID "wifi"
#define WLAN_PASS "********"
#define WLAN_SECURITY WLAN_SEC_WPA2
OneWire oneWire(10);
DallasTemperature sensors(&oneWire);
#define nTraces 1
char *tokens[nTraces] = {"token"};
plotly graph("username", "token", tokens, "filename", nTraces);
void wifi_connect(){
/* Initialise the module */
Serial.println(F("\n... Initializing..."));
if (!graph.cc3000.begin())
{
Serial.println(F("... Couldn't begin()! Check your wiring?"));
while(1);
}
// Optional SSID scan
// listSSIDResults();
if (!graph.cc3000.connectToAP(WLAN_SSID, WLAN_PASS, WLAN_SECURITY)) {
Serial.println(F("Failed!"));
while(1);
}
Serial.println(F("... Connected!"));
/* Wait for DHCP to complete */
Serial.println(F("... Request DHCP"));
while (!graph.cc3000.checkDHCP())
{
delay(100); // ToDo: Insert a DHCP timeout!
unsigned long aucDHCP = 14400;
unsigned long aucARP = 3600;
unsigned long aucKeepalive = 10;
unsigned long aucInactivity = 20;
if (netapp_timeout_values(&aucDHCP, &aucARP, &aucKeepalive, &aucInactivity) != 0) {
Serial.println("Error setting inactivity timeout!");
}
}
}
void setup() {
graph.maxpoints = 100;
Serial.begin(9600);
sensors.begin();
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
wifi_connect();
bool success;
success = graph.init();
if(!success){while(true){}}
graph.openStream();
}
void loop(void) {
Serial.print("Requesting temperatures...");
sensors.requestTemperatures();
Serial.println("DONE");
Serial.print("Temperature for Device 1 is: ");
Serial.print(sensors.getTempFByIndex(0));
graph.plot(millis(), sensors.getTempFByIndex(0), tokens[0]);
delay(500);
}