158 lines
3.2 KiB
C
158 lines
3.2 KiB
C
#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_size_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_size_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);
|
|
}
|