Gobetwino is a Windows-based program that acts as a "generic proxy" for the Arduino. It acts on behalf of the Arduino and does actions the Arduino could not do on its own. In this tutorial, the Log to File command is used so you get a sense of using Gobetwino commands. This command will automatically log data to a .txt file you have created on your PC using a program such as notepad and optionally timestamp it, depending on your preferences.
Steps to set up breadboard:
1.) Connect one lead of a CdS Photocell to +5V power. Connect the other lead to a 10k ohm resistor as well as pin A0 of the Arduino. Connect the other lead of the resistor to ground.
2.) Connect pins 3, 7, and 8 of the EEPROM to +5V power. Connect pin 4 to ground.
3.) Connect pin 1 of the EEPROM to pin D10 of the Arduino. This sets up the Slave Select line.
4.) Connect pin 2 of the EEPROM to pin D12 of the Arduino. This sets up the MISO (Master In Slave Out) line.
5.) Connect pin 5 of the EEPROM to pin D11 of the Arduino. This sets up the MOSI (Master Out Slave In) line.
6.) Connect pin 6 of the EEPROM to pin D13 of the Arduino. This sets up the Serial Clock.
- 1.jpg (24 KiB) Viewed 3493 times
Code: Select all
//Define the pins used in the SPI conection
#define DATAOUT 11//MOSI
#define DATAIN 12//MISO
#define SPICLOCK 13//sck
#define SLAVESELECT 10//ss
//opcodes
#define WREN 6
#define WRDI 4
#define RDSR 5
#define WRSR 1
#define READ 3
#define WRITE 2
//initialize all variables used in program
byte eeprom_output_data;
byte eeprom_input_data=0;
byte clr;
int address = 0;
int CdS_Pin = 0;
char CdS_Val = 0;
char serInString[25];
int serInLen = 25;
char buffer[5];
int value;
//SPI transfer function to shift data from the Arduino to the EEPROM via the SPI connection
char spi_transfer(volatile char data)
{
SPDR = data; // Start the transmission
while (!(SPSR & (1<<SPIF))) // Wait the end of the transmission
{
};
return SPDR; // return the received byte
}
void setup()
{
Serial.begin(9600);
pinMode(DATAOUT, OUTPUT);
pinMode(DATAIN, INPUT);
pinMode(SPICLOCK,OUTPUT);
pinMode(SLAVESELECT,OUTPUT);
digitalWrite(SLAVESELECT,HIGH); //disable device
// SPCR = 01010000
//interrupt disabled,spi enabled,msb 1st,master,clk low when idle,
//sample on leading edge of clk,system clock/4 rate (fastest)
SPCR = (1<<SPE)|(1<<MSTR);
clr=SPSR;
clr=SPDR;
delay(10);
digitalWrite(SLAVESELECT, LOW);
spi_transfer(WREN);
digitalWrite(SLAVESELECT, HIGH);
delay(10);
digitalWrite(SLAVESELECT, LOW);
spi_transfer(WRITE);
address = 0;
spi_transfer((char)(address>>8)); //send MSByte address first
spi_transfer((char)(address)); //send LSByte address
digitalWrite(SLAVESELECT, HIGH);
delay(3000);
}
byte read_eeprom(int EEPROM_CdS_Val)
{
//READ EEPROM
int data;
digitalWrite(SLAVESELECT,LOW);
spi_transfer(READ); //transmit read opcode
spi_transfer((char)(EEPROM_CdS_Val>>8)); //send MSByte address first
spi_transfer((char)(EEPROM_CdS_Val)); //send LSByte address
data = spi_transfer(0xFF); //get data byte
digitalWrite(SLAVESELECT,HIGH); //release chip, signal end transfer
return data;
}
void loop()
{
CdS_Val = analogRead(CdS_Pin); //read value from CdS cell
digitalWrite(SLAVESELECT, LOW); //enable device
spi_transfer(WREN); //write enable
digitalWrite(SLAVESELECT, HIGH); //disable device
delay(10);
digitalWrite(SLAVESELECT, LOW);
spi_transfer(WRITE); //write instruction
spi_transfer((char)(CdS_Val)); //send value of CdS cell from Arduino (master) to EEPROM (slave)
digitalWrite(SLAVESELECT, HIGH);
delay(3000);
eeprom_output_data = (char) read_eeprom(CdS_Val);
Serial.println(eeprom_output_data,DEC);
Serial.println('\n',BYTE);
value = CdS_Val;
Serial.print("#S|LOGDATA|[");
Serial.print(itoa((value), buffer, 10));
Serial.println("]#");
readSerialString(serInString, 1000);
address++;
if(address == 128)
address = 0;
delay(300000); //read and store value every 5 minutes
}
void readSerialString (char *strArray,long timeOut)
{
long startTime=millis();
int i;
while (!Serial.available()) {
if (millis()-startTime >= timeOut) {
return;
}
}
while (Serial.available() && i < serInLen) {
strArray[i] = Serial.read();
i++;
}
}- 2.JPG (58.04 KiB) Viewed 3493 times
- 3.jpg (74.84 KiB) Viewed 3493 times
- 4.jpg (80.9 KiB) Viewed 3493 times