Module de transmisie/receptie radio si... Arduino (II)

date numerice transmise prin radio memorate pe card SD folosind 2 placi Arduino

   Fata de primul articol, am conectat si un modul de scriere/citire pe card SD pastrand partea cu 4 valori transmise de catre emitator:

   Pe ecranul de monitorizare seriala avem informatiile urmatoare:

iar pe cardul SD in documentul fisier.txt sunt scrise aceleasi informatii...

   Sketch-ul de receptor este:

/*.............................................................
Sending Multiple Variables Using VirtualWire. Receiver
Author: Rodrigo Mompo Redoli
For http://controlrobotics.rodrigomompo.com

The SD circuit:
 * SD card attached to SPI bus as follows:
 ** MOSI - pin 11
 ** MISO - pin 12
 ** CLK - pin 13
 ** CS - pin 4

 created   Nov 2010
 by David A. Mellis
 modified 9 Apr 2012
 by Tom Igoe

alse, I use SD example from http://www.roroid.ro
adapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.com
..............................................................*/

#include <VirtualWire.h> // use Virtual library for decode signal from Rx module
#include <Time.h> // use Time library for control the time between data from receiver
#include <SD.h> // use SD library
File fisier;

// Sensors 
int Sensor1Data;
int Sensor2Data;
int Sensor3Data;
int Sensor4Data;

int suma;
  
char StringReceived[22]; 

// other  
int led = 13; //pin for LED
int j=1; // count the messages
  
void setup() {
  // set the time for record time and value
   setTime(0,0,0,25,9,13); // set time to Saturday 8:29:00am Jan 1 2011

pinMode(led, OUTPUT); 

// VirtualWire 
    // Initialise the IO and ISR
    // Required for DR3100
   
    // Bits per sec
    vw_setup(2000);
  
    // set pin for connect receiver module 
    vw_set_rx_pin(7);  
      
    // Start the receiver PLL running
    vw_rx_start();       

Serial.begin(9600);
Serial.println("Receptorul lui niq_ro e pregatit sa primeasca mesaje, "); 
Serial.print("pregatesc si cardul de memorie SD...");
  // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
  // Note that even if it's not used as the CS pin, the hardware SS pin 
  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
  // or the SD library functions will not work. 
  pinMode(10, OUTPUT);

 if (!SD.begin(4)) {
    Serial.println("dar a aparut o eroare...");
    return;
  }
  Serial.println("care este si el gata.");

   File fisier = SD.open("niq_ro.txt", FILE_WRITE); // open a new file
if (fisier) { //daca fisierul este disponibil vom scrie in el
    fisier.println("www.tehnic.go.ro");
    fisier.println("o noua sesiune de teste de receptie cu module RF");
    fisier.close();
   Serial.println("www.tehnic.go.ro");
   Serial.println("o noua sesiune de teste de receptie cu module RF");
   Serial.println("---------------------------------------------------");
  }  
  // if is an error
  else {
    Serial.println("Nu am putut deschide fisierul niq_ro.txt");
  }

  
} // END void setup
  
void loop(){
    uint8_t buf[VW_MAX_MESSAGE_LEN];
    uint8_t buflen = VW_MAX_MESSAGE_LEN;
      
//Taking the data from the control base
    if (vw_get_message(buf, &buflen)) 
    {
      digitalWrite(led, HIGH);
Serial.print("Pachet date nr. "); // print a message
Serial.print(j); // number of message
Serial.print(": ");
 int i;
        // Message with a good checksum received, dump it. 
        for (i = 0; i < buflen; i++)
 {            
          // Fill Sensor1CharMsg Char array with corresponding 
          // chars from buffer.   
          StringReceived[i] = char(buf[i]);
     //     Serial.print(StringReceived[i]);
 }
  
      sscanf(StringReceived, "%d,%d,%d,%d,%d,%d",&Sensor1Data, &Sensor2Data,&Sensor3Data,&Sensor4Data); // Converts a string to an array
//Serial.print();
  if (hour()<10) Serial.print("0");
  Serial.print(hour());
  Serial.print(":");
  if (minute()<10) Serial.print("0");
  Serial.print(minute());
  Serial.print(":");
  if (second()<10) Serial.print("0");
  Serial.print(second());
Serial.print(" : ");
digitalWrite(led, LOW);        
Serial.print(Sensor1Data);
Serial.print(" + ");
Serial.print(Sensor2Data);
Serial.print(" + ");
Serial.print(Sensor3Data);
Serial.print(" + ");
Serial.print(Sensor4Data);
Serial.print(" = ");
suma = Sensor1Data + Sensor2Data + Sensor3Data + Sensor4Data;
Serial.println(suma);


// write on SD card
   
  if (hour()<10) fisier.print("0");
  fisier.print(hour());
  fisier.print(":");
  if (minute()<10) fisier.print("0");
  fisier.print(minute());
  fisier.print(":");
  if (second()<10) fisier.print("0");
  fisier.print(second());
fisier.print(" : ");
//digitalWrite(led, LOW);        
fisier.print(Sensor1Data);
fisier.print(" + ");
fisier.print(Sensor2Data);
fisier.print(" + ");
fisier.print(Sensor3Data);
fisier.print(" + ");
fisier.print(Sensor4Data);
fisier.print(" = ");
fisier.println(suma);

 
        // Turn off light to and await next message 
j=j++; // count the message         
    }

 memset( StringReceived, 0, sizeof( StringReceived));// This line is for reset the StringReceived
}

   Sketch-ul de emitator este ultimul din prima parte.
   Pentru a putea conecta modulul SD, care folosea pinul D11, a trebuit sa conectez receptorul la alt pin liber si am ales pe D7.
   Mesajul de pe monitorizarea seriala, respectiv din fisierul text creat sunt: