Sn_RX_FIFOR problem

Question

Hi, W5300 configured as TCP server When the W5300 receive more of 16383 byte the S0_RX_FIFOR refer to TX memory space: Why the S0_RX_FIFOR is not automatically reset? Is possible reset the S0_RX_FIFOR manually? This is the receive code: u32 lanRecv(u8 *buf, u32 len) { u16 pack_size=0; if(LAN_SCKT_MR_REG & S0_MR_ALIGN) { lanReadBuf(buf, (u32)len); setS0_CR(S0_CR_RECV); return len; } lanReadBuf((u8 *)&pack_size,2); // extract the PACKET-INFO(DATA packet length) if( LAN_MR_REG & MR_FS ) pack_size = ((((pack_size << 8 ) & 0xFF00)) | ((pack_size >> 8)& 0x00FF)); lanReadBuf(buf, (u32)pack_size); // copy data setS0_CR(S0_CR_RECV); // recv return (u32)pack_size; } u32 lanReadBuf(u8 *buf, u32 len) { u32 idx; for (idx = 0; idx < len; idx+=2) *((u16 *)(buf+idx)) = LAN_SCKT_RX_FIFO_REG; return len; } Best Regards

gbit · Answer

Hi, I have set the RMS01R=0x4000 (64KB), the TMSR=0x4000 (64KB) and the MTYPER=0x00FF, is it correct? As I told you before I have set the Socket 0 RX memory size register to 64KB but after 16KB the S0_RX_FIFOR return the first TX data sent. It seems that MTYPER is not correctly configured, but it is set with the first 8 blocks as TX memory (88KB=64KB)and the last 8 blocks as RX memory (88KB=64KB). What is the mistake?

gbit · Answer

Yes, I want to use only one socket(S0) with 64KB Tx and RX memory length… Maybe the problem is that I have set only the RMS01R?

gbit · Answer

Ok, that was the problem. Thanks a lot. Best Regards.