lwip-1.4.1数据传输

只看该作者 · 2015-12-14 14:42

需要上传94k的数据，怎么处理？
static err_t My_http_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
{
  int i, j;
  char *data;
  float adc_data = 0;
  char fname[40];
  struct fs_file file = {0, 0};
  struct http_state *hs;
  hs = arg;

  if (err == ERR_OK && p != NULL)
  {

/* Inform TCP that we have taken the data. tot_len最大值由lwipopts。h中PBUF_POOL_BUFSIZE决定*/
tcp_recved(pcb, p->tot_len);
printf("\r\n p->tot_len is 0x%X\r\n", p->tot_len);
printf("\r\n p->tot_len数据为：%s \r\n", p->payload);
if (hs->file == NULL)
{
   data = p->payload;
   if (strncmp(data, "GET /jquery.js", 14) == 0)
   {
   hs->left =  0x0176c0;
      for(i = 0; i < 0x18; i++)
      {
pbuf_free(p);
         SPI_FLASH_BufferRead(USART_Buffer_Tx, (0x0ff000+(i<<12)), 0x1000);
hs->file = USART_Buffer_Tx;
hs->left =  0x1000;
         send_data(pcb, hs);
tcp_write(pcb,USART_Buffer_Tx,0x1000,TCP_WRITE_FLAG_COPY); //    TCP_WRITE_FLAG_COPY
tcp_output(pcb);
}

         // tcp_sent(pcb, http_sent);
   }
   else close_conn(pcb, hs);
}
else pbuf_free(p);
  }
  if (err == ERR_OK && p == NULL)close_conn(pcb, hs);
  return ERR_OK;
}
上面程序只能上传5K左右的数据

只看该作者 · 2015-12-15 16:45

求大神帮助