====== Arduino Tools ======

Dieses Kapitel enthält Tools zum Entwickeln, Testen und Einrichten der Kommunikation für Arduino-Software.

===== I²C Tools =====

==== I²C scanner ====
{{:de:project_s7:uk.png?16|english}} This sketch tests the standard I²C 7-bit addresses. Devices with higher bit address might not be seen properly.

{{:de:project_s7:de.png?16|deutsch}} Diese Sketch testet die Standard-I²C-7-Bit-Adressen. Geräte mit höherer Bitadresse werden möglicherweise nicht richtig angezeigt.

Eine Zusammenfassung des Arduino I²C finden Sie hier: [[de:arduino:start#arduino_i2c|Arduino I²C]]. \\  
Arduino I²C Kommunikationsmodule finden Sie hier: [[de:arduino:comm_example#i2c|Arduino I²C Kommunikation]]. \\  

<hidden click here to see the program>
<code c>
// --------------------------------------
// i2c_scanner
//
// Version 1
//    This program (or code that looks like it)
//    can be found in many places.
//    For example on the Arduino.cc forum.
//    The original author is not known.
// Version 2, Juni 2012, Using Arduino 1.0.1
//     Adapted to be as simple as possible by Arduino.cc user Krodal
// Version 3, Feb 26  2013
//    V3 by louarnold
// Version 4, March 3, 2013, Using Arduino 1.0.3
//    by Arduino.cc user Krodal.
//    Changes by louarnold removed.
//    Scanning addresses changed from 0...127 to 1...119,
//    according to the i2c scanner by Nick Gammon
//    http://www.gammon.com.au/forum/?id=10896
// Version 5, March 28, 2013
//    As version 4, but address scans now to 127.
//    A sensor seems to use address 120.
// 
//
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
//

#include <Wire.h>


void setup()
{
  Wire.begin();

  Serial.begin(9600);
  Serial.println("\nI2C Scanner");
}


void loop()
{
  byte error, address;
  int nDevices;

  Serial.println("Scanning...");

  nDevices = 0;
  for(address = 1; address < 127; address++ ) 
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the address.
    Wire.beginTransmission(address);
    error = Wire.endTransmission();

    if (error == 0)
    {
      Serial.print("I2C device found at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.print(address,HEX);
      Serial.println("  !");

      nDevices++;
    }
    else if (error==4) 
    {
      Serial.print("Unknow error at address 0x");
      if (address<16) 
        Serial.print("0");
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found\n");
  else
    Serial.println("done\n");

  delay(5000);           // wait 5 seconds for next scan
}
</code>
</hidden>

===== SIM900 Tools =====
==== SIM900 serielle Kommunikation ====
{{:de:project_s7:de.png?16|deutsch}} Kommunikationsprogramm zum Testen des SIM900-Moduls. Befehle müssen in der Befehlszeile des seriellen Monitors (mit ENTER) ausgegeben werden. Der Monitor muss auf //"auch NL als auch CR"// eingestellt sein. 

Weitere Informationen zum SIM900 finden Sie hier: [[de:arduino:gprs#at_coms|SIM900 quad band GSM-GPRS shield]] \\
SIM900-Befehle: [[de:arduino:gprs#at_coms|SIM900 AT Befehle]] \\

{{:de:project_s7:uk.png?16|english}} Communication program for testing the SIM900 module. Commands must be issued on the serial monitor command line (with ENTER). The monitor must be set to //"booth NL & CR"//.

You can read more about the SIM900 here: [[de:arduino:gprs#at_coms|SIM900 quad band GSM-GPRS shield]] \\
SIM900 commands: [[de:arduino:gprs#at_coms|SIM900 AT commands]] \\

<hidden click here to see the program>
<code c>
//Serial Relay - Arduino will patch a
//serial link between the computer and the GPRS Shield
//at 19200 bps 8-N-1
//Computer is connected to Hardware UART
//GPRS Shield is connected to the Software UART
 
#include <SoftwareSerial.h>
 
SoftwareSerial GPRS(50, 51);  //Mega 2560
unsigned char buffer[64]; // buffer array for data recieve over serial port
int count=0;     // counter for buffer array
void setup()
{
    GPRS.begin(19200);               // the GPRS baud rate
    Serial.begin(19200);             // the Serial port of Arduino baud rate.
 
}
 
void loop()
{
    if (GPRS.available())              // if date is comming from softwareserial port ==> data is comming from gprs shield
    {
        while(GPRS.available())          // reading data into char array
        {
            buffer[count++]=GPRS.read();     // writing data into array
            if(count == 64)break;
        }
        Serial.write(buffer,count);            // if no data transmission ends, write buffer to hardware serial port
        clearBufferArray();              // call clearBufferArray function to clear the storaged data from the array
        count = 0;                       // set counter of while loop to zero
 
 
    }
    if (Serial.available())            // if data is available on hardwareserial port ==> data is comming from PC or notebook
    GPRS.write(Serial.read());       // write it to the GPRS shield
}
void clearBufferArray()              // function to clear buffer array
{
    for (int i=0; i<count;i++)
    { buffer[i]=NULL;}                  // clear all index of array with command NULL
}
</code>
</hidden>