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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include "dm9000.h"
#include <netif/ethernetif.h>
#include "lwipopts.h"
#define MAX_ADDR_LEN 6
struct rt_dm9000_eth
{
/* inherit from ethernet device */
struct eth_device parent;
/* interface address info. */
rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */
};
static struct rt_dm9000_eth dm9000_device;
/* interrupt service routine */
void rt_dm9000_isr(int irqno)
{
rt_uint32_t status;
if (status) // if receive packet
{
rt_err_t result;
/* a frame has been received */
result = eth_device_ready(&(dm9000_device.parent));
RT_ASSERT(result == RT_EOK);
}
if (status) // if finished packet transmission
{
}
}
/* RT-Thread Device Interface */
/* initialize the interface */
static rt_err_t rt_dm9000_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t rt_dm9000_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t rt_dm9000_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_ssize_t rt_dm9000_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
{
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_ssize_t rt_dm9000_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
{
rt_set_errno(-RT_ENOSYS);
return 0;
}
static rt_err_t rt_dm9000_control(rt_device_t dev, int cmd, void *args)
{
switch(cmd)
{
case NIOCTL_GADDR:
/* get mac address */
if(args) rt_memcpy(args, dm9000_device.dev_addr, 6);
else return -RT_ERROR;
break;
default :
break;
}
return RT_EOK;
}
/* ethernet device interface */
/* transmit packet. */
rt_err_t rt_dm9000_tx( rt_device_t dev, struct pbuf* p)
{
struct pbuf* q;
rt_uint32_t len;
rt_uint8_t* ptr;
for (q = p; q != NULL; q = q->next)
{
len = q->len;
ptr = q->payload;
/* write data to device */
}
return RT_EOK;
}
/* reception packet. */
struct pbuf *rt_dm9000_rx(rt_device_t dev)
{
struct pbuf* p;
rt_uint32_t len;
/* init p pointer */
p = RT_NULL;
if (1) // if there is packet in device
{
/* get one packet length */
len = 0; // packet length
/* allocate buffer */
p = pbuf_alloc(PBUF_LINK, len, PBUF_RAM);
if (p != RT_NULL)
{
rt_uint8_t* data;
struct pbuf* q;
for (q = p; q != RT_NULL; q= q->next)
{
data = q->payload;
len = q->len;
/* read data from device */
}
}
}
else
{
/* restore interrupt */
}
return p;
}
void rt_hw_dm9000_init()
{
dm9000_device.parent.parent.init = rt_dm9000_init;
dm9000_device.parent.parent.open = rt_dm9000_open;
dm9000_device.parent.parent.close = rt_dm9000_close;
dm9000_device.parent.parent.read = rt_dm9000_read;
dm9000_device.parent.parent.write = rt_dm9000_write;
dm9000_device.parent.parent.control = rt_dm9000_control;
dm9000_device.parent.parent.user_data = RT_NULL;
dm9000_device.parent.eth_rx = rt_dm9000_rx;
dm9000_device.parent.eth_tx = rt_dm9000_tx;
rt_device_register((rt_device_t)&dm9000_device,
"E0", RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX);
}
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