TX buffer corrupt

Question

I send biggest(60 048 bytes) char string via buffer[2047-(48)] to HTTP user request i’m using latest w5500 driver from wiznet all ok… however, sometimes displayed is trash why? init: socket(sockn, Sn_MR_TCP, 80, SF_TCP_NODELAY); loop and handler: switch(getSn_SR(sn)) { case SOCK_ESTABLISHED : if(getSn_IR(sn) & Sn_IR_CON) { setSn_IR(sn,Sn_IR_CON); } if((size = getSn_RX_RSR(sn)) > 0) { if(size > WN_BUFFER_SIZE) size = WN_BUFFER_SIZE; ret = recv(sn,rx_buf,size); if(ret <= 0) return ret; uint16_t maxBlockSize = 2047; uint16_t currentBlockSize = 0; uint16_t totalDataSize = sizeof(image_logo)-1; /// <<<<------ 60 048 !!!!!!!!!!! uint16_t totalSendSize = 0; uint16_t freeSize=0; while(totalDataSize != totalSendSize){ // clear buffer memset(tx_buf,0x00, 2048); if(totalDataSize-totalSendSize < maxBlockSize){ currentBlockSize=totalDataSize-totalSendSize; } else { currentBlockSize=maxBlockSize; } memcpy(tx_buf, image_logo+totalSendSize, currentBlockSize); sentsize[sn]=0; size=currentBlockSize; while(size != sentsize[sn]) { ret = send(sn,tx_buf+sentsize[sn], currentBlockSize-sentsize[sn]); // error if(ret < 0) { close(sn); return ret; } // sended if(ret > 0){ sentsize[sn] += ret; } totalSendSize+=sentsize[sn]; } disconnect(sn); ...... ...... RESULT: 12345678 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000…

lawrence · Answer

Hi, nicom I would like to see all of the project. Could you email me the project zip file? I will check it. lawrence@wiznet.co.kr Thank you lawrence