3 Replies Latest reply on Jul 30, 2018 5:01 PM by zhez

    High speed Ftp server on CYW54907 with sd card(sdio)

    emre.kara@neuron.com.tr

      Hi,

      We want to high speed file transfer from sdcard to mobile phone with CYW54907.

      But we need min 2Mbyte/sec transfer speed.

       

      lf l use 802.11ac and make ftp server on lwip with wiced platform, can i reach min 2Mbyte/sec?

      wlth high speed sdcard on CYW54907 sdio interface.

       

      is it possible? If not is there any solution with any controller?

       

      Thanks

        • 1. Re: High speed Ftp server on CYW54907 with sd card(sdio)
          zhez

          Hi :

           

          we can divide the app into three steps:

          1.  TCP throughput , I just use 54907 board to do a iperf TCP test.

          please see the result, it is on 159 channel with HT20 .   It can get a result >2M Bytes  easily in an open envrionment .

          C:\Users\Administrator>iperf -s -w 1M -i1

          ------------------------------------------------------------

          Server listening on TCP port 5001

          TCP window size: 1.00 MByte

          ------------------------------------------------------------

          [264] local 10.0.0.2 port 5001 connected with 10.0.0.4 port 54462

          [ ID] Interval Transfer     Bandwidth

          [264]  0.0- 1.0 sec 3.11 MBytes  26.1 Mbits/sec

          [264]  1.0- 2.0 sec 2.95 MBytes  24.8 Mbits/sec

          [264]  2.0- 3.0 sec 3.13 MBytes  26.3 Mbits/sec

          [264]  3.0- 4.0 sec 2.94 MBytes  24.7 Mbits/sec

          [264]  4.0- 5.0 sec 2.83 MBytes  23.7 Mbits/sec

          [264]  5.0- 6.0 sec 2.88 MBytes  24.2 Mbits/sec

          [264]  6.0- 7.0 sec 2.97 MBytes  24.9 Mbits/sec

          [264]  7.0- 8.0 sec 3.05 MBytes  25.6 Mbits/sec

          [264]  8.0- 9.0 sec 2.80 MBytes  23.5 Mbits/sec

          [264]  9.0-10.0 sec 3.23 MBytes  27.1 Mbits/sec

          [264] 10.0-11.0 sec  3.20 MBytes  26.9 Mbits/sec

          [264] 11.0-12.0 sec  3.37 MBytes  28.3 Mbits/sec

          [264] 12.0-13.0 sec  3.18 MBytes  26.7 Mbits/sec

          [264] 13.0-14.0 sec  3.19 MBytes  26.8 Mbits/sec

           

          2.  SDIO  interface speed, as you said we can set SDIO into 4-line hight speed mode, it can get a speed > 2M Bytes easily.

           

          3.  so the main tuning and focus are the process :  data read from SDIO interface -->  RAM --->  send to mac , RF side by using FTP protocol.

              The application optimization will determine the transfer speed.

           

          1 of 1 people found this helpful
          • 2. Re: High speed Ftp server on CYW54907 with sd card(sdio)
            inoue_tomohiro_1742091

            I tried video streaming from SD card via HTTP before. In that case, the maximum throughput was more than 10 Mbyte/sec.

            1 of 1 people found this helpful
            • 3. Re: High speed Ftp server on CYW54907 with sd card(sdio)
              zhez

              thanks a lot,  54907 should have this capability with 11AC enabled.