int32_t recvfrom(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port)
{
uint8_t mr;
uint8_t head[8];
uint16_t pack_len=0;
CHECK_SOCKNUM();
//CHECK_SOCKMODE(Sn_MR_UDP);
switch((mr=getSn_MR(sn)) & 0x0F)
{
case Sn_MR_UDP:
case Sn_MR_MACRAW:
break;
#if ( _WIZCHIP_ < 5200 )
case Sn_MR_IPRAW:
case Sn_MR_PPPoE:
break;
#endif
default:
return SOCKERR_SOCKMODE;
}
CHECK_SOCKDATA();
if(sock_remained_size[sn] == 0)
{
while(1)
{
pack_len = getSn_RX_RSR(sn);
if(getSn_SR(sn) == SOCK_CLOSED) return SOCKERR_SOCKCLOSED;
if( (sock_io_mode & (1<<sn)) && (pack_len == 0) ) return SOCK_BUSY;
if(pack_len != 0) break;
};
}
sock_pack_info[sn] = PACK_COMPLETED;
switch (mr & 0x07)
{
case Sn_MR_UDP :
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 8);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
// read peer's IP address, port number & packet length
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
*port = head[4];
*port = (*port << 8) + head[5];
sock_remained_size[sn] = head[6];
sock_remained_size[sn] = (sock_remained_size[sn] << 8) + head[7];
sock_pack_info[sn] = PACK_FIRST;
}
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
//
// Need to packet length check (default 1472)
//
wiz_recv_data(sn, buf, pack_len); // data copy.
break;
case Sn_MR_MACRAW :
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 2);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
// read peer's IP address, port number & packet length
sock_remained_size[sn] = head[0];
sock_remained_size[sn] = (sock_remained_size[sn] <<8) + head[1];
if(sock_remained_size[sn] > 1514)
{
close(sn);
return SOCKFATAL_PACKLEN;
}
sock_pack_info[sn] = PACK_FIRST;
}
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
wiz_recv_data(sn,buf,pack_len);
break;
#if ( _WIZCHIP_ < 5200 )
case Sn_MR_IPRAW:
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 6);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
sock_remained_size[sn] = head[4];
sock_remaiend_size[sn] = (sock_remained_size[sn] << 8) + head[5];
sock_pack_info[sn] = PACK_FIRST;
}
//
// Need to packet length check
//
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
wiz_recv_data(sn, buf, pack_len); // data copy.
break;
#endif
default:
wiz_recv_ignore(sn, pack_len); // data copy.
sock_remained_size[sn] = pack_len;
break;
}
setSn_CR(sn,Sn_CR_RECV);
/* wait to process the command... */
while(getSn_CR(sn)) ;
sock_remained_size[sn] -= pack_len;
if(sock_remained_size[sn] != 0) sock_pack_info[sn] |= 0x01;
return pack_len;
}
int32_t recvfrom(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port)
{
//M20150601 : For W5300
#if _WIZCHIP_ == 5300
uint16_t mr;
uint16_t mr1;
#else
uint8_t mr;
#endif
//
uint8_t head[8];
uint16_t pack_len=0;
CHECK_SOCKNUM();
//CHECK_SOCKMODE(Sn_MR_UDP);
//A20150601
#if _WIZCHIP_ == 5300
mr1 = getMR();
#endif
switch((mr=getSn_MR(sn)) & 0x0F)
{
case Sn_MR_UDP:
case Sn_MR_IPRAW:
case Sn_MR_MACRAW:
break;
#if ( _WIZCHIP_ < 5200 )
case Sn_MR_PPPoE:
break;
#endif
default:
return SOCKERR_SOCKMODE;
}
CHECK_SOCKDATA();
if(sock_remained_size[sn] == 0)
{
while(1)
{
pack_len = getSn_RX_RSR(sn);
if(getSn_SR(sn) == SOCK_CLOSED) return SOCKERR_SOCKCLOSED;
if( (sock_io_mode & (1<<sn)) && (pack_len == 0) ) return SOCK_BUSY;
if(pack_len != 0) break;
};
}
//D20150601 : Move it to bottom
// sock_pack_info[sn] = PACK_COMPLETED;
switch (mr & 0x07)
{
case Sn_MR_UDP :
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 8);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
// read peer's IP address, port number & packet length
//A20150601 : For W5300
#if _WIZCHIP_ == 5300
if(mr1 & MR_FS)
{
addr[0] = head[1];
addr[1] = head[0];
addr[2] = head[3];
addr[3] = head[2];
*port = head[5];
*port = (*port << 8) + head[4];
sock_remained_size[sn] = head[7];
sock_remained_size[sn] = (sock_remained_size[sn] << 8) + head[6];
}
else
{
#endif
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
*port = head[4];
*port = (*port << 8) + head[5];
sock_remained_size[sn] = head[6];
sock_remained_size[sn] = (sock_remained_size[sn] << 8) + head[7];
#if _WIZCHIP_ == 5300
}
#endif
sock_pack_info[sn] = PACK_FIRST;
}
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
//A20150601 : For W5300
len = pack_len;
#if _WIZCHIP_ == 5300
if(sock_pack_info[sn] & PACK_FIFOBYTE)
{
*buf++ = sock_remained_byte[sn];
pack_len -= 1;
sock_remained_size[sn] -= 1;
sock_pack_info[sn] &= ~PACK_FIFOBYTE;
}
#endif
//
// Need to packet length check (default 1472)
//
wiz_recv_data(sn, buf, pack_len); // data copy.
break;
case Sn_MR_MACRAW :
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 2);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
// read peer's IP address, port number & packet length
sock_remained_size[sn] = head[0];
sock_remained_size[sn] = (sock_remained_size[sn] <<8) + head[1] -2;
#if _WIZCHIP_ == W5300
if(sock_remained_size[sn] & 0x01)
sock_remained_size[sn] = sock_remained_size[sn] + 1 - 4;
else
sock_remained_size[sn] -= 4;
#endif
if(sock_remained_size[sn] > 1514)
{
close(sn);
return SOCKFATAL_PACKLEN;
}
sock_pack_info[sn] = PACK_FIRST;
}
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
wiz_recv_data(sn,buf,pack_len);
break;
//#if ( _WIZCHIP_ < 5200 )
case Sn_MR_IPRAW:
if(sock_remained_size[sn] == 0)
{
wiz_recv_data(sn, head, 6);
setSn_CR(sn,Sn_CR_RECV);
while(getSn_CR(sn));
addr[0] = head[0];
addr[1] = head[1];
addr[2] = head[2];
addr[3] = head[3];
sock_remained_size[sn] = head[4];
//M20150401 : For Typing Error
//sock_remaiend_size[sn] = (sock_remained_size[sn] << 8) + head[5];
sock_remained_size[sn] = (sock_remained_size[sn] << 8) + head[5];
sock_pack_info[sn] = PACK_FIRST;
}
//
// Need to packet length check
//
if(len < sock_remained_size[sn]) pack_len = len;
else pack_len = sock_remained_size[sn];
wiz_recv_data(sn, buf, pack_len); // data copy.
break;
//#endif
default:
wiz_recv_ignore(sn, pack_len); // data copy.
sock_remained_size[sn] = pack_len;
break;
}
setSn_CR(sn,Sn_CR_RECV);
/* wait to process the command... */
while(getSn_CR(sn)) ;
sock_remained_size[sn] -= pack_len;
//M20150601 :
//if(sock_remained_size[sn] != 0) sock_pack_info[sn] |= 0x01;
if(sock_remained_size[sn] != 0)
{
sock_pack_info[sn] |= PACK_REMAINED;
#if _WIZCHIP_ == 5300
if(pack_len & 0x01) sock_pack_info[sn] |= PACK_FIFOBYTE;
#endif
}
else sock_pack_info[sn] = PACK_COMPLETED;
#if _WIZCHIP_ == 5300
pack_len = len;
#endif
//
//M20150409 : Explicit Type Casting
//return pack_len;
return (int32_t)pack_len;
}
