Search found 36 matches

by abcdcadb
Mon Feb 26, 2018 11:08 am
Forum: ESP32 IDF
Topic: F_write of fatfs: so slow
Replies: 1
Views: 1429

F_write of fatfs: so slow

I did a configuration on sd_card example: int iOk,iCount; FIL iHandle; f_unlink((const TCHAR*)"/demodir/r.txt"); iOk=f_open(&iHandle,(TCHAR*)"/demodir/r.txt",(BYTE)(FA_CREATE_NEW|FA_WRITE)); gpio_pad_select_gpio(25); gpio_set_direction(25, GPIO_MODE_INPUT); gpio_set_pull_mode(25, GPIO_PULLUP_ONLY); ...
by abcdcadb
Tue Jan 23, 2018 2:53 am
Forum: ESP32 IDF
Topic: TCP throughput: How can speed up
Replies: 5
Views: 6907

Re: TCP throughput: How can speed up

Dear,

I use tcp_perf test from idf( example/performance) without modification and send continuously data to another laptop(access into the AP wifi created by esp32) and receive by Hercules(terminal)

my board is ESP-wrover-kit(black)
by abcdcadb
Mon Jan 22, 2018 6:24 am
Forum: ESP32 IDF
Topic: How can I implement FTP client?
Replies: 4
Views: 3716

Re: How can I implement FTP client?

quanvu,

if code size is big, make a modification on partition
by abcdcadb
Mon Jan 22, 2018 3:49 am
Forum: ESP32 IDF
Topic: TCP throughput: How can speed up
Replies: 5
Views: 6907

Re: TCP throughput: How can speed up

kbaud1, deeply appreciate for your rep. As you mentioned, we cared the specs of MCU from document only and picked it. Unfortunately, there were a few reviews about performance at that time. Now, besides throughput, we also face the other problems such as the stability when running bluetooth and wifi...
by abcdcadb
Thu Jan 18, 2018 5:58 am
Forum: ESP32 IDF
Topic: TCP throughput: How can speed up
Replies: 5
Views: 6907

Re: TCP throughput: How can speed up

Besides idf/examples/performance/tcp_perf ( which gives around 1.8Mbit/sec, I used also idfexamples/wifi/iperf) and did as the manual "readme". weirdly, I got ~ 8Mbit/sec!!!. The result is highly different from the "examples/performance/tcp_perf" could any one give e an explanation and how can I mak...
by abcdcadb
Mon Jan 15, 2018 12:48 am
Forum: ESP32 IDF
Topic: TCP throughput: How can speed up
Replies: 5
Views: 6907

TCP throughput: How can speed up

there has been already a question about tcp throughput here: https://esp32.com/viewtopic.php?t=126 however, no one gives a method (either software or hardware) to improve the speed. While someone can get 10Mbyte/sec, My ESP32 wrover-kit still gives around 200KByte/sec!!!! I test using iperl from new...
by abcdcadb
Wed Jan 03, 2018 8:56 am
Forum: ESP32 IDF
Topic: WiFi AP disappeared suddenly while using HTTP Server
Replies: 9
Views: 3472

Re: WiFi AP disappeared suddenly while using HTTP Server

Hi there, I also am facing a similar. my esp32 (configured as AP) shows there is a new station connected into it ( even though the station has been connected and transfered data already): I (4001604) wifi: n:1 1, o:1 1, ap:1 1, sta:255 255, prof:1 I (4001604) wifi: station: 74:e5:43:04:86:99 join, A...
by abcdcadb
Fri Dec 29, 2017 4:14 am
Forum: ESP32 IDF
Topic: wifi tcp transmission drops: error 104 connection reset by peer
Replies: 0
Views: 1088

wifi tcp transmission drops: error 104 connection reset by peer

I use the tcpiperl to test speed and operation of tcp transmission, some time and especially highly frequently occurs when ble is enabled at the same time is, wifi automatically drops, tcp cannot send (sent byte is -1) and return error 104 connection reset by peer. At that time, my pc couln't ping e...
by abcdcadb
Tue Dec 26, 2017 4:19 am
Forum: ESP32 IDF
Topic: wifi tcp transmission: configure to get the best for streaming application
Replies: 1
Views: 1266

wifi tcp transmission: configure to get the best for streaming application

I just finished a streaming video (stored in sd card of esp) via wifi tcp ( by samba protocol), however for a big video (high resolution and big fps), esp almost drops down after a moment, especially when enabling bluetooth. I suspect that some parameters of wifi weren't configured well to support f...
by abcdcadb
Tue Dec 12, 2017 3:20 am
Forum: General Discussion
Topic: I2C assert failed,and not work somtimes!
Replies: 7
Views: 3912

Re: I2C assert failed,and not work somtimes!

So, eventually, I2C cant work simultaneously with WLan, it seems that is a bug of SDK or hardware, should we report to company to fix or what else should we do?

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