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425 lines
9.6 KiB
425 lines
9.6 KiB
/*
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Code to test wiznet WIZ810MJ module
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See:
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<http://code.rancidbacon.com/LearningAboutArduinoWIZ810MJ>
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Current features:
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* Initial W5100 driver port:
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+ new-style network configuration
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+ socket creation/listening/closing
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+ Sending/Receiving okay
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+ example "echo" server (no longer)
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+ example "web server" with LED flash.
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* Terrible hacked-together code
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Author:
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follower@rancidbacon.com
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License:
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LGPL
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Version:
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20071106-0005+
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*/
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#include <WIZ810MJ.h>
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/* --------- SPI --------- */
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// Define SPI-related pins
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#define PIN_DATA_OUT 11 // MOSI (Master Out / Slave In)
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#define PIN_DATA_IN 12 // MISO (Master In / Slave Out)
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#define PIN_SPI_CLOCK 13 // SCK (Serial Clock)
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#define PIN_SLAVE_SELECT 10 // SS (Slave Select)
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class SpiConfiguration {
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public:
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static void begin(void);
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};
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void SpiConfiguration::begin(void) {
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/*
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Configure pins and registers required for SPI communication.
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*/
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// Configure I/O pins
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pinMode(PIN_DATA_OUT, OUTPUT);
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pinMode(PIN_DATA_IN, INPUT);
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pinMode(PIN_SPI_CLOCK, OUTPUT);
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pinMode(PIN_SLAVE_SELECT, OUTPUT);
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digitalWrite(PIN_SLAVE_SELECT, HIGH); // Disable slave
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/*
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Configure SPI Control Register (SPCR) (All values initially 0)
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Bit Description
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7 SPI Interrupt Enable -- disable (SPIE --> 0)
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6 SPI Enable -- enable (SPE --> 1)
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5 Data Order -- MSB 1st (DORD --> 0) (Slave specific)
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4 Master/Slave Select -- master (MSTR --> 1)
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3 Clock Polarity -- (CPOL --> 0) (Slave specific) ("Mode")
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2 Clock Phase -- (CPHA --> 0) (Slave specific)
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1 SPI Clock Rate Select 1 -- } (SPR1 --> 0)
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0 SPI Clock Rate Select 0 -- } fOSC/4 (SPR0 --> 0) ("Fastest" but see SPI2X in SPSR)
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*/
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SPCR = (1<<SPE)| (1<<MSTR);
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// Clear previous data and status (TODO: Determine if necessary/better way.)
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// (Based on Playground SPI example.)
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byte dummy;
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dummy = SPSR;
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dummy = SPDR;
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delay(10);
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}
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SpiConfiguration SPI = SpiConfiguration();
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/* ----------------------- */
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/* ------ WIZ810MJ ------ */
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class Wiz810MjDevice {
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public:
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Wiz810MjDevice(int resetPin);
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void setIp(byte b0, byte b1, byte b2, byte b3);
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void setMask(byte b0, byte b1, byte b2, byte b3);
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void setGateway(byte b0, byte b1, byte b2, byte b3);
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private:
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void _init(void);
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byte * _packBuffer(byte b0, byte b1, byte b2, byte b3);
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int _resetPin;
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byte _scratchBuffer[6]; // Can we make this static?
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};
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Wiz810MjDevice::Wiz810MjDevice(int resetPin) {
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// TODO: We should really allow the chip-select pin to be set here?
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// Or require that it's defined. (Currently in the library file 'types.h'.)
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_resetPin = resetPin;
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_init();
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}
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void Wiz810MjDevice::_init(void) {
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/*
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Initialise the WIZ810MJ module and driver.
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*/
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/*
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Initialise the W5100 chip
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(Originally I thought it was possible for the chip
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to function without a hardware reset but it
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seems not to be the case.)
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*/
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pinMode(_resetPin, OUTPUT);
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// We rely on the time between function calls to
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// be long enough for the chip to recognise the
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// reset.
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digitalWrite(_resetPin, HIGH);
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digitalWrite(_resetPin, LOW); // reset
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digitalWrite(_resetPin, HIGH);
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// Chip initialisation by driver
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// Might be redundant following the above reset,
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// as this performs a software reset.
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iinchip_init();
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// Initialise driver
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// (This is required to configure some variables used
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// internally by the driver--even if the default chip
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// configuration is used.)
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sysinit(0x55, 0x55);
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}
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byte * Wiz810MjDevice::_packBuffer(byte b0, byte b1, byte b2, byte b3) {
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/*
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*/
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_scratchBuffer[0] = b0;
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_scratchBuffer[1] = b1;
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_scratchBuffer[2] = b2;
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_scratchBuffer[3] = b3;
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return _scratchBuffer;
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}
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void Wiz810MjDevice::setIp(byte b0, byte b1, byte b2, byte b3) {
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/*
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*/
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setSIPR(_packBuffer(b0, b1, b2, b3));
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}
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void Wiz810MjDevice::setMask(byte b0, byte b1, byte b2, byte b3) {
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/*
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*/
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setSUBR(_packBuffer(b0, b1, b2, b3));
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}
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void Wiz810MjDevice::setGateway(byte b0, byte b1, byte b2, byte b3) {
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/*
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*/
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setGAR(_packBuffer(b0, b1, b2, b3));
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}
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/* ----------------------- */
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// #define PIN_RESET 9 // WIZnet module /RESET
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#define PIN_RESET 8 // WIZnet module /RESET
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SOCKET testSocket;
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byte ip[6];
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#define PIN_LED 2
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void setup () {
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Serial.begin(9600);
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Serial.println("Setup enter...");
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SPI.begin();
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Wiz810MjDevice WIZ810MJ = Wiz810MjDevice(PIN_RESET);
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Serial.println("Test W5100 configuration...");
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byte config_gateway[] = {192,168,2,101};
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byte config_subnet_mask[] = {255,255,255,0};
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byte config_mac_address[] = {0x02,0xDE,0xAD,0xBE,0xEF,0x00};
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byte config_ip_address[] = {192,168,2,105};
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setSHAR(config_mac_address);
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WIZ810MJ.setIp(192,168,2,105);
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WIZ810MJ.setMask(255,255,255,0);
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WIZ810MJ.setGateway(192,168,2,101);
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Serial.println("End test W5100 configuration...");
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Serial.println("Test W5100 driver code...");
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getGAR(ip);
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Serial.print("Gateway IP read (first digit): ");
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Serial.println(ip[0], DEC);
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Serial.println("End test W5100 driver code...");
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pinMode(PIN_LED, OUTPUT);
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digitalWrite(PIN_LED, HIGH);
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Serial.println("Setup exit...");
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}
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void sendBanner(uint8_t *buffer, int ledState) { // {Socket targetSocket, ) {
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//strcpy((char *) buffer, "Content-Type: text/plain\n\nfoo!\n");
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strcpy((char *) buffer, "HTTP/1.1 200 OK\nContent-Type: text/html\n\n<html><body bgcolor='#000000'>foo!</body></html>\n");
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if (ledState) {
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buffer[63] = 'F';
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} else {
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buffer[65] = 'F';
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}
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Serial.print("send result: ");
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Serial.println(send(testSocket, buffer, strlen((char *)buffer)), DEC);
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}
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uint8_t readByte() {
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uint8_t theByte;
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recv(testSocket, &theByte, 1);
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return theByte;
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}
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int readMatch(char *stringToMatch) {
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/*
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Routine to read and match bytes received.
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(Essentially strcmp replacement without requiring a large receive buffer.)
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NOTE: Failed matches drop all bytes read so far. (i.e. you can't check for
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a bunch of possible matches from the same starting position).
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TODO: Fix this.
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Note: This blocks if there isn't enough data in the rx buffer.
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*/
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while (getSn_RX_RSR(testSocket) < strlen(stringToMatch)) {
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// block
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// TODO: Return error or wait or "too short"?
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}
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// TODO: Do fancy string-matching techniques to avoid reading the whole string
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// on non-matches. :-)
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for (int currCharIdx = 0; currCharIdx < strlen(stringToMatch); currCharIdx++) {
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if (readByte() != stringToMatch[currCharIdx]) {
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return 0;
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}
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}
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return 1;
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}
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void loop() {
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Serial.println("Test W5100 socket...");
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Serial.print("Create socket result: ");
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Serial.println(socket(testSocket, Sn_MR_TCP, 80, 0), DEC);
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Serial.print("Socket status: ");
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Serial.println(IINCHIP_READ(Sn_SR(testSocket)), HEX);
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if (IINCHIP_READ(Sn_SR(testSocket)) == SOCK_CLOSED) {
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Serial.println("Socket still closed, waiting...");
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while (IINCHIP_READ(Sn_SR(testSocket)) == SOCK_CLOSED) {
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//pass
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}
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}
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Serial.print("Listen on socket result: ");
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Serial.println(listen(testSocket), DEC);
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Serial.println("Waiting for connection...");
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while (getSn_SR(testSocket) == SOCK_LISTEN) {
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delay(500);
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}
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Serial.println(getSn_SR(testSocket),HEX);
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getSn_DIPR(testSocket, ip);
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Serial.print("Destination IP read (last digit): ");
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Serial.println(ip[3], DEC);
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// TODO: Avoid buffer overflows...
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#define MAX_TX_BUFFER_SIZE 200
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uint8_t bytesToSend[MAX_TX_BUFFER_SIZE];
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//sendBanner(bytesReceived);
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int dataLength = 0;
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#define STATE_GET 0
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#define STATE_READ 5
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#define STATE_END -2
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#define STATE_ERR -1
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int state = STATE_GET;
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int ledState = 1;
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unsigned char theByte;
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while (getSn_SR(testSocket) == SOCK_ESTABLISHED) {
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while (getSn_RX_RSR(testSocket) > 0) {
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if (state == STATE_GET) {
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if (readMatch("GET /")) {
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state = STATE_READ;
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} else {
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state = STATE_ERR;
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}
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}
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if (state == STATE_READ) {
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theByte = readByte();
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if (theByte == '0') {
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digitalWrite(PIN_LED, LOW);
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ledState = 0;
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delay(100);
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} else if (theByte == '1') {
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digitalWrite(PIN_LED, HIGH);
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ledState = 1;
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delay(100);
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} else {
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// It's not a valid byte.
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state = STATE_END;
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}
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} else {
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state = STATE_ERR;
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}
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if ((state == STATE_ERR) || (state == STATE_END)) {
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Serial.println("");
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break;
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}
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/*
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dataLength = getSn_RX_RSR(testSocket);
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if (dataLength >= MAX_RX_BUFFER_SIZE) { // TODO: blah, blah...
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dataLength = MAX_RX_BUFFER_SIZE-1;
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}
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// Serial.print("dataLength: "); Serial.println(dataLength, HEX);
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//Serial.print("recv result: ");
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//Serial.println(recv(testSocket, bytesReceived, dataLength), DEC); // NOTE: Throws away unread portion? No?
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recv(testSocket, bytesReceived, dataLength); // TODO: Return length?
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bytesReceived[dataLength]=0x00;
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Serial.print((char *)bytesReceived);
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//Serial.print("send result: ");
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//Serial.println(send(testSocket, bytesReceived, dataLength), DEC);
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*/
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}
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sendBanner(bytesToSend, ledState);
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break;
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}
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close(testSocket);
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disconnect(testSocket);
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Serial.println("End test W5100 socket...");
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}
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