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Rabu, 06 Juni 2012

Arduino Wiznet

Here is the first implementation I've made relating to the powerfull couple arduino + wiznet WIZ810MJ board here is what I get :




I bought a card from from ebay and made the solders by myself, i am not so good for that because it was my first time but anyway I did it finally !!!



Here is what I get after several hours of soldering....



Perfect, I can connect it to the arduino !!!
I did follow the progress from the actual reference site :
http://code.rancidbacon.com/LearningAboutArduinoWIZ810MJ

and after configuring the module I was able to ping (so great ..... !!!).

I did use a cross ethernet cable directly connected to the computer, My ethernet cable was free because i am conneted via wifi ...

I did configure a mini local network (http://www.commentcamarche.net/faq/sujet-2639-windows-xp-mise-en-place-d-un-reseau-prive-virtuel-vpn). sorry it's in french. WIFI connection is not compatible with ethernet local configuration !!!


Here is the code to be qble to enable the ping response (Arduino Code) :

*

Code to test wiznet WIZ810MJ module

See:


Current features:

* Read register/address values

* Write register/address values

* Configure networking to enable ping

* Terrible hacked-together code

License:

LGPL

(Although note spi_transfer comes from the Playground originally.)

*/

// Define SPI-related pins
#define PIN_DATA_OUT 11 // MOSI (Master Out / Slave In)
#define PIN_DATA_IN 12 // MISO (Master In / Slave Out)
#define PIN_SPI_CLOCK 13 // SCK (Serial Clock)
#define PIN_SLAVE_SELECT 10 // SS (Slave Select)

#define PIN_RESET 9 // WIZnet module /RESET

#define WIZNET_OPCODE_READ 0x0F
#define WIZNET_OPCODE_WRITE 0xF0

#define DUMMY_DATA 0xFF

void setup () {
Serial.begin(9600);
Serial.println("Setup enter...");

Serial.print("SPCR: "); Serial.println(SPCR, BIN);

// Configure SPI
// Configure I/O pins
pinMode(PIN_DATA_OUT, OUTPUT);
pinMode(PIN_DATA_IN, INPUT);
pinMode(PIN_SPI_CLOCK, OUTPUT);
pinMode(PIN_SLAVE_SELECT, OUTPUT);

digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave

// Configure SPI Control Register (SPCR) (All values initially 0)
// Bit Description
// 7 SPI Interrupt Enable -- disable (SPIE --> 0)
// 6 SPI Enable -- enable (SPE --> 1)
// 5 Data Order -- MSB 1st (DORD --> 0) (Slave specific)
// 4 Master/Slave Select -- master (MSTR --> 1)
// 3 Clock Polarity -- (CPOL --> 0) (Slave specific) ("Mode")
// 2 Clock Phase -- (CPHA --> 0) (Slave specific)
// 1 SPI Clock Rate Select 1 -- } (SPR1 --> 0)
// 0 SPI Clock Rate Select 0 -- } fOSC/4 (SPR0 --> 0) ("Fastest" but see SPI2X in SPSR)
SPCR = (1<
<

Serial.print("SPCR: "); Serial.println(SPCR, BIN);

// Clear previous data and status (TODO: Determine if necessary/better way.)
// (Based on Playground SPI example.)
byte dummy;
dummy = SPSR;
dummy = SPDR;
delay(10);

// Serial.println((1 <<>

// Serial.print("IODIR response: ");
// iodirVal = getRegister(deviceOpcodeRead, REG_IODIR);
// Serial.println(iodirVal, BIN);

// setRegister(deviceOpcodeWrite, REG_IODIR, newVal);

Serial.println("Triggering reset...");
pinMode(PIN_RESET, OUTPUT);

digitalWrite(PIN_RESET, HIGH); // no reset
delay(10); // Pretty arbitrary length
digitalWrite(PIN_RESET, LOW); // reset
delay(10);
digitalWrite(PIN_RESET, HIGH); // no reset
delay(10);
Serial.println("Reset triggered...");

// Attempt read
Serial.println("Read attempt...");

// digitalWrite(PIN_SLAVE_SELECT, LOW); // Enable slave

/*
byte data;

data = spi_transfer(0x0F); // read
Serial.print("Response: "); Serial.println(data, HEX);

data = spi_transfer(0x00); // address part1
Serial.print("Response: "); Serial.println(data, HEX);

data = spi_transfer(0x18); //address part2 //18 should return 0xD0 after reset.
Serial.print("Response: "); Serial.println(data, HEX);

data = spi_transfer(0xFF); // dummy
Serial.print("Response: "); Serial.println(data, HEX);

digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave
*/

// RTR Retry Time-value Register
Serial.print("Read 0x0017: "); Serial.println(readAddressValue(0x00, 0x17), HEX);
Serial.print("Read 0x0018: "); Serial.println(readAddressValue(0x00, 0x18), HEX);


Serial.println("Read attempt end...");


Serial.println("Write attempt start...");

Serial.print("Initial read 0x0001: "); Serial.println(readAddressValue(0x00, 0x01), HEX);

writeAddressValue(0x00, 0x01, 0xC0);

Serial.print("Post-write read 0x0001: "); Serial.println(readAddressValue(0x00, 0x01), HEX);

Serial.println("Write attempt end...");


Serial.println("Configure device...");

// default gateway
writeAddressValue(0x00, 0x01, 0xC0);
writeAddressValue(0x00, 0x02, 0xA8);
writeAddressValue(0x00, 0x03, 0x02);
writeAddressValue(0x00, 0x04, 0x65);

// subnet mask
writeAddressValue(0x00, 0x05, 0xFF);
writeAddressValue(0x00, 0x06, 0xFF);
writeAddressValue(0x00, 0x07, 0xFF);
writeAddressValue(0x00, 0x08, 0x00);

// source hardware address (MAC?)
writeAddressValue(0x00, 0x09, 0x00);
writeAddressValue(0x00, 0x0A, 0xDE);
writeAddressValue(0x00, 0x0B, 0xAD);
writeAddressValue(0x00, 0x0C, 0xBE);
writeAddressValue(0x00, 0x0D, 0xEF);
writeAddressValue(0x00, 0x0E, 0x00);

// source ip address
writeAddressValue(0x00, 0x0F, 0xC0);
writeAddressValue(0x00, 0x10, 0xA8);
writeAddressValue(0x00, 0x11, 0x02);
writeAddressValue(0x00, 0x12, 0x69);

Serial.println("End configure device...");


Serial.println("Setup exit...");

}

byte readAddressValue(byte addressHiByte, byte addressLowByte) {
// TODO: use a word for the address instead

byte data = 0x00;

digitalWrite(PIN_SLAVE_SELECT, LOW); // Enable slave

// TODO: Check response values? e.g. 0x00, 0x01, 0x02
spi_transfer(WIZNET_OPCODE_READ);
spi_transfer(addressHiByte);
spi_transfer(addressLowByte);

data = spi_transfer(DUMMY_DATA);

digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave

return data;
}


void writeAddressValue(byte addressHiByte, byte addressLowByte, byte targetValue) {
// TODO: use a word for the address instead

digitalWrite(PIN_SLAVE_SELECT, LOW); // Enable slave

// TODO: Check response values? e.g. 0x00, 0x01, 0x02
spi_transfer(WIZNET_OPCODE_WRITE);
spi_transfer(addressHiByte);
spi_transfer(addressLowByte);

spi_transfer(targetValue);

digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave
}


/*
byte getRegister(byte targetDeviceOpcode, byte registerAddress) {

digitalWrite(PIN_SLAVE_SELECT, LOW); // Enable slave
spi_transfer(targetDeviceOpcode);
spi_transfer(registerAddress); // The register we want to read

byte data; // Correct type?
data = spi_transfer(0xFF); // Transfer dummy byte to get response
digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave

return data;
}
*/

/*
void setRegister(byte targetDeviceOpcode, byte registerAddress, byte value) {
// TODO: Do Better?

digitalWrite(PIN_SLAVE_SELECT, LOW); // Enable slave
spi_transfer(targetDeviceOpcode);
spi_transfer(registerAddress); // The register we want to write
spi_transfer(value);

digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave
}
*/

// From Playground
char spi_transfer(volatile char data)
{
SPDR = data; // Start the transmission
while (!(SPSR & (1<

{
};
return SPDR; // return the received byte
}


void loop() {

}

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