mbed-os/targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/ethernet_api.c

/* mbed Microcontroller Library
 * Copyright (c) 2006-2017 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <string.h>

#include "ethernet_api.h"
#include "cmsis.h"
#include "mbed_interface.h"
#include "mbed_toolchain.h"
#include "mbed_error.h"
#include "mbed_wait_api.h"
#include "smsc9220_eth.h"

/*----------------------------------------------------------------------------
  Ethernet Device initialize
 *----------------------------------------------------------------------------*/
int ethernet_init()
{
    return smsc9220_init();
}

/*----------------------------------------------------------------------------
  Ethernet Device Uninitialize
 *----------------------------------------------------------------------------*/
void ethernet_free()
{
    /* Uninitialize function is not implemented in Ethernet driver. */
}

int ethernet_write(const char *data, int size)
{
    /* smsc9220 cannot provide the functionality of writing into the tx buffer */
    /* by chunks, without knowing the full size of the packet in the beginning */
    return 0;
}

int ethernet_send()
{
    /* smsc9220 cannot provide the functionality of writing into the tx buffer */
    /* by chunks, without knowing the full size of the packet in the beginning */
    return 0;
}

int ethernet_receive()
{
    return smsc9220_peek_next_packet_size();
}

/* Read from an recevied ethernet packet.*/
/* After receive returnd a number bigger than 0 it is*/
/* possible to read bytes from this packet.*/
/* Read will write up to size bytes into data.*/
/* It is possible to use read multible times.*/
/* Each time read will start reading after the last read byte before. */
int ethernet_read(char *data, int dlen)
{
    return smsc9220_receive_by_chunks(data, dlen);
}

void ethernet_address(char *mac)
{
    smsc9220_read_mac_address(mac);
}

int ethernet_link(void)
{
    return 0;
}

void ethernet_set_link(int speed, int duplex)
{
    smsc9220_establish_link();
}