📄 util.c
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}
if(string_compare("@",1)!=0)
{
if(retransmit_buffer[rt_size].rtframe.status!=0)
{
FunAddCommand(command_length-1);goto roll;
}
txdnet.tcpframe.tcpdata[0]=0x55;
txdnet.tcpframe.tcpdata[1]=0xaa;
txdnet.tcpframe.tcpdata[2]=0x55;
txdnet.tcpframe.tcpdata[3]=rt_size;
for(i=1,j=4;i<command_length;i++,j++){txdnet.tcpframe.tcpdata[j]=command_buffer[i];}
txdnet.tcpframe.tcpdata[j]='a';
c_txcount++;
for(i=0;i<3;i++){txdnet.etherframe.destnodeid[i]=ping_ethernet_address.words[i];}
create_tcp_packet(command_length+4);
}
if(string_compare("&",1)!=0)
{
i=FunCheckEmpty();
if(i==rt_size)goto roll;
txdnet.tcpframe.tcpdata[0]=0x55;
txdnet.tcpframe.tcpdata[1]=0xaa;
txdnet.tcpframe.tcpdata[2]=0x55;
txdnet.tcpframe.tcpdata[3]=i;
for(i=1,j=4;i<command_length;i++,j++){txdnet.tcpframe.tcpdata[j]=command_buffer[i];}
txdnet.tcpframe.tcpdata[j]='a';
c_txcount++;
for(i=0;i<3;i++){txdnet.etherframe.destnodeid[i]=ping_ethernet_address.words[i];}
create_tcp_packet(command_length+4);
}
if(string_compare("$",1)!=0)
{
/* if(command_length<5)goto roll;
txdnet.tcpframe.tcpdata[0]=0x55;
txdnet.tcpframe.tcpdata[1]=0xaa;
txdnet.tcpframe.tcpdata[2]=0xaa;
for(i=4,j=4;i<command_length;i++,j++){txdnet.tcpframe.tcpdata[j]=command_buffer[i];}
txdnet.tcpframe.tcpdata[j]='a';
ping_ip_address.bytes[3]=(command_buffer[1]-0x30)*100+(command_buffer[2]-0x30)*10+command_buffer[3]-0x30;
for(i=0;i<3;i++){txdnet.etherframe.destnodeid[i]=ping_ethernet_address.words[i];}
create_tcp_packet(command_length+4);*/
txdnet.udpframe.udpdata[0]=0x55;
txdnet.udpframe.udpdata[1]=0xaa;
txdnet.udpframe.udpdata[2]=0x55;
for(i=1,j=4;i<command_length;i++,j++){txdnet.udpframe.udpdata[j]=command_buffer[i];}
txdnet.udpframe.udpdata[j]='a';
for(i=0;i<3;i++){txdnet.etherframe.destnodeid[i]=ping_ethernet_address.words[i];}
rxdnet.ipframe.sourceip[0]=ping_ip_address.words[0];
rxdnet.ipframe.sourceip[1]=ping_ip_address.words[1];
udp_dstport=1521;
create_udp_packet(command_length+4);
}
if(string_compare("TELNET",6)!=0)//以下为TELNET命令的解析和执行
{
ip=0;
for(i=6,j=0;i<command_length;i++)//取得ip地址
{
if(command_buffer[i]!='.')
{
command_buffer[i]=command_buffer[i]&0x0f;
ip=ip*10;
ip=ip+command_buffer[i];
}
else
{
ping_ip_address.bytes[j]=ip;
if(j==3)break;
j++;ip=0;
}
}
if(j==3)
{
if((ping_ip_address.dwords&mask_ip_address.dwords)==(my_ip_address.dwords&mask_ip_address.dwords))
{
//表示位于同一子网.
arp_request(ping_ip_address.dwords);
}
else
{
//表示属于不同的子网,需要通过网关.
ping_ip_address_ttl=10;
for(j=0;j<6;j++)
{
ping_ethernet_address.bytes[j]=gateway_ethernet_address.bytes[j];
}
if(gateway_ip_address_ttl==0)
{
// send_string("\r\nGateWay Not Found!\r\nC:>");
// tcp_count=0;
}
}
}
}
if(string_compare("DVR",3)!=0)
{
ip=0;
//取得ip地址
for(i=3,j=0;i<command_length;i++)
{
if(command_buffer[i]!='.')
{
if(j==4)
{
command_buffer[i]=command_buffer[i]&0x0f;
s_port=s_port*10;
s_port=s_port+command_buffer[i];
}
else
{
command_buffer[i]=command_buffer[i]&0x0f;
ip=ip*10;
ip=ip+command_buffer[i];
}
}
else
{
if(j==4)
{
// c_camnumber=s_port;
break;
}
else
{
temp_ip_address.bytes[j]=ip;
}
j++;ip=0;
}
}
if(j==4)
{
// tcp_count=20;//20second
// local_use_port=Local_Dvr_Port;
// socketnumber=Dvr_Port;
dvr_buffer[c_DvrWriteBuffer].dstipaddress=temp_ip_address.dwords;
dvr_buffer[c_DvrWriteBuffer].cam_number=s_port;
c_DvrWriteBuffer++;
if(c_DvrWriteBuffer>=dvr_length)c_DvrWriteBuffer=0;
/*
if((dvr_ip_address.dwords&mask_ip_address.dwords)==(my_ip_address.dwords&mask_ip_address.dwords))
{
//表示位于同一子网.
arp_request(dvr_ip_address.dwords);
}
else
{
//表示属于不同的子网,需要通过网关.
ping_ip_address_ttl=10;
for(j=0;j<6;j++)
{
dvr_ethernet_address.bytes[j]=gateway_ethernet_address.bytes[j];
}
if(gateway_ip_address_ttl==0)
{
// send_string("\r\nGateWay Not Found!\r\nC:>");
tcp_count=0;
ping_ip_address_ttl=0;
}
}*/
}
}
roll: command_length=0;
}
}
}
void process_data()
{
uchar i,j,temp;
command_length=0;
while(comrxdread!=comcommandend)
{
pwdi=!pwdi;
temp=get_char();
command_buffer[command_length]=temp;
if((temp!=' ')&&(temp<'a')) //表示不是空格和回车
{
command_length++;
if(command_length==command_buffer_size)command_length=0;
}
if(temp>='a')
{
// pwdi=!pwdi;
txdnet.tcpframe.tcpdata[0]=0x55;
txdnet.tcpframe.tcpdata[1]=0xaa;
txdnet.tcpframe.tcpdata[2]=0xaa;
for(i=4,j=0;j<=command_length;i++,j++)
{
txdnet.tcpframe.tcpdata[i]=command_buffer[j];
}
for(i=0;i<3;i++){txdnet.etherframe.destnodeid[i]=ping_ethernet_address.words[i];}
create_tcp_packet(command_length+5);
command_length=0;
}
}
}
void timer0() interrupt 1
{
/*工作在16位定时模式,中断时间为10毫秒中断一次,误差小于千分之1,晶振使用22.1184Mhz*/
unsigned char i;
tl0=9;
th0=184;
msec++;
for(i=0;i<=rt_size;i++)
{
if(retransmit_buffer[i].rtframe.status!=0)
{
retransmit_buffer[i].rtframe.timeout--;
//if(retransmit_buffer[i].rtframe.timeout==0){retransmit_packet(i);}
}
if(retransmitpacket[i].status!=0)
{retransmitpacket[i].timeout--;}
}
if((msec%20)==0)b_100ms=1;
if(msec==100)
{
/*100分频,就是1秒一次*/
msec=0;
sec++;
double_second=1;
if(sec==60)
{
sec=0;
if(gateway_ip_address_ttl>0)gateway_ip_address_ttl--;
}
if(ping_ip_address_ttl>1)ping_ip_address_ttl--;
if(c_net_delay>0)c_net_delay--;
if(c_DvrRunTime>0)c_DvrRunTime--;
}
}
void serial(void) interrupt 4
{
unsigned char temp;
if(ti)
{
ti=0;
if(comtxdread!=comtxdwrite)
{
sbuf=comtxdbuf[comtxdread];
comtxdread++;
if(comtxdread>=com_txd_buffer_size)comtxdread=0;
comtxdbufempty=0;
}
else {comtxdbufempty=1;}
}
if (ri)
{
ri=0;
temp=sbuf;
comrxdbuf[comrxdwrite]=temp;
comrxdwrite++;
if(comrxdwrite>=com_txd_buffer_size)comrxdwrite=0;
//if(c_type==0)
//{
if(temp>='a'){bDataFlag=1;comcommandend=comrxdwrite;}
//}
if(temp==0x0d){bCommandFlag=1;comcommandend=comrxdwrite;}
}
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