Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

Wi-Fi Combo

Anonymous
Not applicable

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

0 Likes
1 Solution
ToIn_1742091
Level 5
10 solutions authored 5 solutions authored First solution authored
Level 5

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

View solution in original post

3 Replies
Zhengbao_Zhang
Moderator
Moderator First comment on KBA 10 questions asked 5 questions asked
Moderator

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.

ToIn_1742091
Level 5
10 solutions authored 5 solutions authored First solution authored
Level 5

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

Zhengbao_Zhang
Moderator
Moderator First comment on KBA 10 questions asked 5 questions asked
Moderator

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

0 Likes