Norimasa Okamoto / WIZ820ioNetIf

WIZ820io（W5200) network interface、EthernetNetIf compatible.

/media/uploads/va009039/wiz820ionetif.jpg

example

#include "WIZ820ioNetIf.h"
#include "HTTPClient.h"
#include "HTTPServer.h"

#if defined(TARGET_KL25Z)
WIZ820ioNetIf eth(PTD2,PTD3,PTD1,PTD0,PTD5);
#endif
HTTPClient http;
HTTPStream stream;

void callback(HTTPResult r){
    printf("callback %d %s\n", r, HTTPClient::ResultStr(r));
}

int main() {
    int err = eth.setup();
    if (err < 0) {
        printf("setup error %d\n", err);
        exit(-1);
    }    

    HTTPServer svr;
    svr.addHandler<SimpleHandler>("/");
    svr.bind(80);

    const char* uri = "http://va009039-mbed.appspot.com/kl25z/";
    http.get(uri, &stream, callback);
    uint8_t buf[256];
    int total = 0;
    stream.readNext(buf, sizeof(buf));
    while(1) {
        if(stream.readable()) {
            int len = stream.readLen();
            total += len;
            printf("%d %d\n", total, len);
            stream.readNext(buf, sizeof(buf));
        }
        Net::poll();
    }
}

w5200.cpp

Committer:
va009039
Date:
2013-03-24
Revision:
1:22b9052d864d

File content as of revision 1:22b9052d864d:

/*
 * Copyright (c) 2010 by Cristian Maglie <c.maglie@bug.st>
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of either the GNU General Public License version 2
 * or the GNU Lesser General Public License version 2.1, both as
 * published by the Free Software Foundation.
 */

#include <stdio.h>
#include <string.h>
#include "mbed.h"
#include "w5200.h"

SPI* pSPI;
DigitalOut* pCS;
void initSS(){ pCS->write(1); }
void setSS() { pCS->write(0); }
void resetSS() { pCS->write(1); }

// W5200 controller instance
W5200Class W5200;

#define TX_RX_MAX_BUF_SIZE 2048
#define TX_BUF 0x1100
#define RX_BUF (TX_BUF + TX_RX_MAX_BUF_SIZE)

#define TXBUF_BASE 0x8000
#define RXBUF_BASE 0xC000

#if defined(TARGET_KL25Z)
#define RESET_PIN PTD5
#define CS_PIN    PTD0
#define MOSI_PIN  PTD2
#define MISO_PIN  PTD3
#define SCLK_PIN  PTD1
#endif

void W5200Class::init(void)
{
  if (!pSPI) {
    pSPI = new SPI(MOSI_PIN, MISO_PIN, SCLK_PIN); // mosi, miso, sclk
  }
  if (!pCS) {
    pCS = new DigitalOut(CS_PIN);
  }
  initSS();
  writeMR(1<<RST);
  
  for (int i=0; i<MAX_SOCK_NUM; i++) {
    write((0x4000 + i * 0x100 + 0x001F), 2);
    write((0x4000 + i * 0x100 + 0x001E), 2);
  }

  for (int i=0; i<MAX_SOCK_NUM; i++) {
    SBASE[i] = TXBUF_BASE + SSIZE * i;
    RBASE[i] = RXBUF_BASE + RSIZE * i;
  }
}

uint16_t W5200Class::getTXFreeSize(SOCKET s)
{
  uint16_t val=0, val1=0;
  do {
    val1 = readSnTX_FSR(s);
    if (val1 != 0)
      val = readSnTX_FSR(s);
  } 
  while (val != val1);
  return val;
}

uint16_t W5200Class::getRXReceivedSize(SOCKET s)
{
  uint16_t val=0,val1=0;
  do {
    val1 = readSnRX_RSR(s);
    if (val1 != 0)
      val = readSnRX_RSR(s);
  } 
  while (val != val1);
  return val;
}


void W5200Class::send_data_processing(SOCKET s, const uint8_t *data, uint16_t len)
{
  // This is same as having no offset in a call to send_data_processing_offset
  send_data_processing_offset(s, 0, data, len);
}

void W5200Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len)
{
  uint16_t ptr = readSnTX_WR(s);
  ptr += data_offset;
  uint16_t offset = ptr & SMASK;
  uint16_t dstAddr = offset + SBASE[s];

  if (offset + len > SSIZE) 
  {
    // Wrap around circular buffer
    uint16_t size = SSIZE - offset;
    write(dstAddr, data, size);
    write(SBASE[s], data + size, len - size);
  } 
  else {
    write(dstAddr, data, len);
  }

  ptr += len;
  writeSnTX_WR(s, ptr);
}


void W5200Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek)
{
  uint16_t ptr;
  ptr = readSnRX_RD(s);
  read_data(s, (uint8_t *)ptr, data, len);
  if (!peek)
  {
    ptr += len;
    writeSnRX_RD(s, ptr);
  }
}

void W5200Class::read_data(SOCKET s, volatile uint8_t *src, volatile uint8_t *dst, uint16_t len)
{
  uint16_t size;
  uint16_t src_mask;
  uint16_t src_ptr;

  //src_mask = (uint16_t)src & RMASK;
  src_mask = (int)src & RMASK;
  src_ptr = RBASE[s] + src_mask;

  if( (src_mask + len) > RSIZE ) 
  {
    size = RSIZE - src_mask;
    read(src_ptr, (uint8_t *)dst, size);
    dst += size;
    read(RBASE[s], (uint8_t *) dst, len - size);
  } 
  else
    read(src_ptr, (uint8_t *) dst, len);
}


uint8_t W5200Class::write(uint16_t _addr, uint8_t _data)
{
  setSS();  
  
  pSPI->write(_addr >> 8);
  pSPI->write(_addr & 0xFF);
  pSPI->write(0x80);
  pSPI->write(0x01);
  pSPI->write(_data);
  resetSS();
  return 1;
}

uint16_t W5200Class::write(uint16_t _addr, const uint8_t *_buf, uint16_t _len)
{
    setSS();
    pSPI->write(_addr >> 8);
    pSPI->write(_addr & 0xFF);
    pSPI->write((0x80 | ((_len & 0x7F00) >> 8)));
    pSPI->write(_len & 0x00FF);

  for (uint16_t i=0; i<_len; i++)
  {
    pSPI->write(_buf[i]);
  }
  resetSS();
 
  return _len;
}

uint8_t W5200Class::read(uint16_t _addr)
{
  setSS();  
  pSPI->write(_addr >> 8);
  pSPI->write(_addr & 0xFF);
  pSPI->write(0x00);
  pSPI->write(0x01);
  uint8_t _data = pSPI->write(0);
  resetSS();
  return _data;
}

uint16_t W5200Class::read(uint16_t _addr, uint8_t *_buf, uint16_t _len)
{
    setSS();
    pSPI->write(_addr >> 8);
    pSPI->write(_addr & 0xFF);
    pSPI->write((0x00 | ((_len & 0x7F00) >> 8)));
    pSPI->write(_len & 0x00FF);

    for (uint16_t i=0; i<_len; i++)
    {
        _buf[i] = pSPI->write(0);
    }
    resetSS();
    return _len;
}

void W5200Class::execCmdSn(SOCKET s, SockCMD _cmd) {
  // Send command to socket
  writeSnCR(s, _cmd);
  // Wait for command to complete
  while (readSnCR(s))
    ;
}