(unsigned char reg)
{
DM_ADDR_PORT = reg;
return DM_DATA_PORT;//将数据从数据端口读出
}
void delay(U32 t)
{
U32 i;
for(;t>0;t--)
{
for(i=0;i<100;i++){}
}
}
void dm_init(void)
{
//int i;
dm_reg_write(DM9000_NCR,3);//1//软件复位DM9000
delay(30);//延时至少20μs
dm_reg_write(DM9000_NCR,0);//清除复位位
dm_reg_write(DM9000_NCR,3);//1//为了确保复位正确，再次复位
delay(30);
dm_reg_write(DM9000_NCR,0);
dm_reg_write(DM9000_GPCR,1);//设置GPIO0为输出
delay(50);
dm_reg_write(DM9000_GPR,0);//激活内部PHY
delay(50);/////////////////////////////////////
dm_reg_write(DM9000_NSR,0x2c);//清TX状态
dm_reg_write(DM9000_ISR,0x3f); //0xf//清中断状态
dm_reg_write(DM9000_RCR,0x39);//设置RX控制
dm_reg_write(DM9000_TCR,0);//设置TX控制
dm_reg_write(DM9000_BPTR,0x3f);
dm_reg_write(DM9000_FCTR,0x3a);
dm_reg_write(DM9000_FCR,0xff);
dm_reg_write(DM9000_SMCR,0x00);
dm_reg_write(DM9000_PAR0,0x00);//设置MAC地址：00-01-02-03-04-05
dm_reg_write(DM9000_PAR1,0x01);
dm_reg_write(DM9000_PAR2,0x02);
dm_reg_write(DM9000_PAR3,0x03);
dm_reg_write(DM9000_PAR4,0x04);
dm_reg_write(DM9000_PAR5,0x05);
dm_reg_write(DM9000_NSR,0x2c);//再次清TX状态
dm_reg_write(DM9000_ISR,0x3f); //0xf//再次清中断状态
dm_reg_write(DM9000_IMR,0x81);//打开接受数据中断
}
void dm_tran_packet(unsigned char *datas, int length)
{
int i;
dm_reg_write(DM9000_IMR, 0x80);//在发送数据过程中禁止网卡中断
dm_reg_write(DM9000_TXPLH, (length>>8) & 0x0ff);//设置发送数据长度
dm_reg_write(DM9000_TXPLL, length & 0x0ff);
DM_ADDR_PORT = DM9000_MWCMD;//发送数据缓存赋予数据端口
//发送数据
for(i=0;i{
delay(50);
DM_DATA_PORT = datas[i]|(datas[i+1]<8);//8位数据转换为16位数据输出
}
dm_reg_write(DM9000_TCR, 0x01);//把数据发送到以太网上
while((dm_reg_read(DM9000_NSR) & 0x0c) == 0)
;//等待数据发送完成
delay(50);
dm_reg_write(DM9000_NSR, 0x2c);//清除TX状态
dm_reg_write(DM9000_IMR, 0x81);//打开DM9000接收数据中断
}
int dm_rec_packet(unsigned char *datas)
{
unsigned char int_status;
unsigned char rx_ready;
unsigned short rx_status;
unsigned short rx_length;
unsigned short temp;
int i;
int_status = dm_reg_read(DM9000_ISR);//读取ISR
if(int_status & 0x1)//判断是否有数据要接受
{
dm_reg_write(DM9000_ISR,0x01);//清除中断*******************F
rx_ready = dm_reg_read(DM9000_MRCMDX);//先读取一个无效的数据
Uart_Printf("ready1=%dn",rx_ready);
rx_ready = (unsigned char)DM_DATA_PORT;//真正读取到的数据包首字节
Uart_Printf("ready2=%dn",rx_ready);
if(rx_ready == 1)//判读首字节是否为1或0
{
DM_ADDR_PORT = DM9000_MRCMD;//连续读取数据包内容
rx_status = DM_DATA_PORT;//状态字节
rx_length = DM_DATA_PORT;//数据长度
Uart_Printf("nlength=%dn",rx_length);
for(i=0; i//16位数据转换为8位数据存储
{
delay(20);
temp = DM_DATA_PORT;
datas[i] = temp & 0x0ff;
datas[i + 1] = (temp >> 8) & 0x0ff;
}
if((datas[12]==8)&&(datas[13]==6))
{
if((datas[20]==0)&&(datas[21]==1))
Uart_Printf("ARP请求n");
if((datas[20]==0)&&(datas[21]==2))
Uart_Printf("ARP应答n");
for(i=1; i<=rx_length; i++)
{
Uart_Printf("%d",datas[i-1]);
if(i%6==0)
Uart_Printf("n");
}
}
}
}
else if(rx_ready !=0)//停止设备
{
//dm_reg_write(DM9000_IMR,0x80);//停止中断
//dm_reg_write(DM9000_ISR,0x0F);//清中断状态
//dm_reg_write(DM9000_RCR,0x0);//停止接收
//还需要复位系统，这里暂时没有处理
}
dm_reg_write(DM9000_ISR, 0x1);//清中断
return rx_length;
}
void __irq uartISR(void)
{
char ch;
rSUBSRCPND |= 0x1;
rSRCPND |= 0x1<28;
rINTPND |= 0x1<28;
ch=rURXH0;
if(ch == s)
tran=1;//表示发送一个ARP数据请求包
while(!(rUTRSTAT0 & 0x2));
rUTXH0=ch;
//for(i=0;i<100;i++);
}
void __irq DM9000ISR(void)
{
DisableIrq(BIT_EINT4_7);
Uart_Printf("nEINT7 Occuredn");
if(rEINTPEND&(1<7))
{
rEINTPEND = rEINTPEND | (0x1<7);
packet_len = dm_rec_packet(buffer);//接收网卡数据
}
rSRCPND = rSRCPND | (0x1<4);
rINTPND = rINTPND | (0x1<4);
EnableIrq(BIT_EINT4_7);
}
void init()
{
//uart0 port
rGPHCON = 0x00faaa;
rGPHUP= 0x7ff;
rULCON0 = 0x3;
rUCON0 = 0x5;
rUFCON0 = 0;
