我改进过的RTL8019AS部分,你可以看看
#include "config.h"
#include "LPC2294.h"
#include "general.h"
#define INT_N 0x00000080
#define NET_RST 0x00000040
#define NET_BASE_ADDR 0x83400000
//{0x52,0x54,0x4c,0x19,0xf7,0x42}
#define The_PAR0 0x52
#define The_PAR1 0x54
#define The_PAR2 0x4C
#define The_PAR3 0x19
#define The_PAR4 0xF7
#define The_PAR5 0x42
uint8 Tx_Buff_Page = 0x46;
void WriteToNet(uint8 ADDR_16, uint16 WRITEDATA)
{
(*((volatile unsigned short *)NET_BASE_ADDR + ADDR_16)) = WRITEDATA; //0x83400000
return;
}
uint16 ReadFromNet(uint8 ADDR_16)
{
uint16 temp_uint16;
temp_uint16 = (*((volatile unsigned short *)NET_BASE_ADDR + ADDR_16)); //0x83400000
return temp_uint16;
}
void SetPage(uint8 pagenumber)
{
uint8 temp_uint8;
temp_uint8 = ReadFromNet(0); //command register
temp_uint8 = temp_uint8 & 0x3B; //注意txp位不能要
pagenumber = pagenumber << 6;
temp_uint8 = temp_uint8 | pagenumber;
WriteToNet(0, temp_uint8);
return;
}
void InitNic(void)
{
int temp_i;
PINSEL0 = PINSEL0 & ~0x0000F000;
IO0DIR = (IO0DIR & ~INT_N) | NET_RST;
IO0CLR = NET_RST;
for (temp_i = 0; temp_i < 40000; temp_i++);
IO0SET = NET_RST;
for (temp_i = 0; temp_i < 40000; temp_i++);
IO0CLR = NET_RST;
for (temp_i = 0; temp_i < 40000; temp_i++);
//WriteToNet(0x1F, 0x00);
//for (temp_i = 0; temp_i < 40000; temp_i++);
WriteToNet(0x00, 0x21); //使芯片处于停止模式,这时进行寄存器设置
for (temp_i = 0; temp_i < 40000; temp_i++);
SetPage(0);
/////////////////////////////////////////////
WriteToNet(0x0F, 0x00);
WriteToNet(0x07, 0xFF);
///////////////////////////////////
WriteToNet(0x0E, 0xCB); //DCR ???
WriteToNet(0x0C, 0xE0); //RCR ???
WriteToNet(0x0D, 0xE0); //TCR ???
///////////////////////////////////
WriteToNet(0x01, 0x4C);
WriteToNet(0x02, 0x80);
WriteToNet(0x03, 0x4C);
WriteToNet(0x09, 0x40);
WriteToNet(0x08, 0x00);
WriteToNet(0x0B, 0x00);
WriteToNet(0x0A, 0x00);
WriteToNet(0x04, 0x40);
WriteToNet(0x06, 0x00);
WriteToNet(0x05, 0x00);
/////////////////////////////////////////////
SetPage(1);
/////////////////////////////////////////////
WriteToNet(0x07, 0x4D);
///////////////////////////////////
WriteToNet(0x01, The_PAR0);
WriteToNet(0x02, The_PAR1);
WriteToNet(0x03, The_PAR2);
WriteToNet(0x04, The_PAR3);
WriteToNet(0x05, The_PAR4);
WriteToNet(0x06, The_PAR5);
///////////////////////////////////
WriteToNet(0x08, 0x00);
WriteToNet(0x09, 0x00);
WriteToNet(0x0A, 0x00);
WriteToNet(0x0B, 0x00);
WriteToNet(0x0C, 0x00);
WriteToNet(0x0D, 0x00);
WriteToNet(0x0E, 0x00);
WriteToNet(0x0F, 0x00);
/////////////////////////////////////////////
SetPage(0);
WriteToNet(0x0C, 0xC4); //RCR ???
WriteToNet(0x07, 0xFF);
WriteToNet(0x00, 0x22);
Tx_Buff_Page = 0x46;
return;
}
void Send_Packet(uint16 * buf, uint32 len)
{
uint32 temp_len;
int temp_i, temp_j;
if (len < 60)
len = 60;
if (len & 1)
len++;
temp_len = len >> 1;
if (Tx_Buff_Page == 0x40)
Tx_Buff_Page = 0x46;
else
Tx_Buff_Page = 0x40;
SetPage(0); //切换至第0页
WriteToNet(0x09, Tx_Buff_Page); //设置发送页地址
WriteToNet(0x08, 0x00); //写入RSAR0
WriteToNet(0x0b, len >> 8); //写入RSCR1
WriteToNet(0x0a, len & 0xFF); //写入RSCR0
WriteToNet(0x00, 0x12); //启动DMA写write dma, page0
for (temp_i = 0; temp_i < temp_len; temp_i++)
WriteToNet(0x10, *buf++);
WriteToNet(0x0b, 0x00);
WriteToNet(0x0a, 0x00);
WriteToNet(0x00, 0x22); //结束或放弃DMA操作
WriteToNet(0x04, Tx_Buff_Page); //txd packet start;
WriteToNet(0x06, len >> 8); //high byte counter
WriteToNet(0x05, len & 0xFF); //low byte counter
WriteToNet(0x07, 0xFF);
WriteToNet(0x00, 0x3E); //to sendpacket;
for (temp_i = 0; temp_i < 6; temp_i++) //最多重发6次
{
for (temp_j = 0; temp_j < 1000; temp_j++)
{
if ((ReadFromNet(0) & 0x04) == 0) //检查CR寄存器的txp位是否为低,为1说明正在发送,为0说明发完或出错放弃
break;
}
if (ReadFromNet(0x04) & 0x01) //表示发送成功,判断发送状态寄存器TSR，决定是否出错
break;
WriteToNet(0x00,0x3E); //to sendpacket;
}
WriteToNet(0x07, 0xFF);
return;
}
int Rec_Packet(uint16 * buf)
{
uint8 temp_BNRY, temp_CURR;
uint16 temp_buf0, temp_buf1;
uint32 temp_len;
uint8 temp_uint8;
int temp_i;
SetPage(0);
/*
temp_uint8 = ReadFromNet(0x07); //读取中断状态
if (temp_uint8 & 0xAC)
{
InitNic();
return -1;
}
*/
temp_BNRY = ReadFromNet(0x03); //bnry page have read 读页指针
SetPage(1);
temp_CURR = ReadFromNet(0x07); //curr writepoint 8019写页指针
SetPage(0);
temp_BNRY++; //bnry++;
if (temp_BNRY > 0x7F)
temp_BNRY = 0x4C;
if (temp_BNRY != temp_CURR) //此时表示有新的数据包在缓冲区里
{
WriteToNet(0x09, temp_BNRY); //RSAR1写入读页地址的高字节
WriteToNet(0x08, 0x00); //RSAR0写入读页地址的低字节
WriteToNet(0x0b, 0x00); //RSCR1写入读取字节计数高字节
WriteToNet(0x0a, 0x04); //RSCR0写入读取字节计数低字节
WriteToNet(0x00, 0x0a); //启动Remote DMA读操作
temp_buf0 = ReadFromNet(0x10);
temp_buf1 = ReadFromNet(0x10);
WriteToNet(0x0b,0x00); //RSCR1写入读取字节计数高字节
WriteToNet(0x0a,0x00); //RSCR0写入读取字节计数高字节
WriteToNet(0x00,0x22); //结束或放弃DMA操作
temp_buf1 = temp_buf1 - 4;
if (((temp_buf0 & 0x0001) == 0) ||
((temp_buf0 & 0xFF00) < 0x4C00) ||
((temp_buf0 & 0xFF00) > 0x7F00) ||
( temp_buf1 > 0x0600))
{
SetPage(1);
temp_CURR = ReadFromNet(0x07); //page1读取CURR的值
SetPage(0); //切换回page0
temp_BNRY = temp_CURR - 1; //把bnry恢复为下16K中的空余部分
if (temp_BNRY < 0x4C)
temp_BNRY = 0x7F;
WriteToNet(0x03, temp_BNRY); //把BNRY恢复到指向下一帧write to bnry
WriteToNet(0x07, 0xFF); //清除中断标志
return -1;
}
else //表示数据包是完好的.读取剩下的数据
{
WriteToNet(0x09, temp_BNRY); //RSAR1写入读页地址的高字节//read page address high
WriteToNet(0x08, 0x04); //RSAR0写入读页地址的低字节//read page address low
WriteToNet(0x0b, temp_buf1 >> 8); //RSCR1写入读取字节计数高字节//read count high
WriteToNet(0x0a, temp_buf1 & 0xFF); //RSCR0写入读取字节计数低字节//read count low;
WriteToNet(0x00, 0x0a); //启动Remote DMA读操作
temp_len = temp_buf1 / 2;
for (temp_i = 0; temp_i < temp_len; temp_i++)
*buf++ = ReadFromNet(0x10);
WriteToNet(0x0b,0x00); //RSCR1写入读取字节计数高字节//read count high
WriteToNet(0x0a,0x00); //RSCR0写入读取字节计数高字节//read count low;
WriteToNet(0x00,0x22); //结束或放弃DMA操作//结束或放弃DMA
temp_BNRY = (temp_buf0 >> 8) - 1;
if (temp_BNRY < 0x4C)
temp_BNRY = 0x7F;
WriteToNet(0x03, temp_BNRY);
WriteToNet(0x07, 0xFF);
return temp_buf1;
}
}
else
return 0;
}
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