ESP8266 Developer Zone The Official ESP8266 Forum 2016-02-29T13:48:24+08:00 https://bbs.espressif.com:443/feed.php?f=7&t=1746 2016-02-29T13:48:24+08:00 2016-02-29T13:48:24+08:00 https://bbs.espressif.com:443/viewtopic.php?t=1746&p=5858#p5858 <![CDATA[Re: ESP8266 Connection Issues]]>
1. Do you mean that there is no station can connect to the AP module easily ? Could you try it with another module ?

2. What is the curl command you used ? We will have a try.

Or you can provide your bin files, we will download and test it.

Thanks for your interest in ESP8266 !

Statistics: Posted by ESP_Faye — Mon Feb 29, 2016 1:48 pm

]]> 2016-02-06T02:46:55+08:00 2016-02-06T02:46:55+08:00 https://bbs.espressif.com:443/viewtopic.php?t=1746&p=5701#p5701 <![CDATA[ESP8266 Connection Issues]]>
1) Clients have an extremely hard time connecting to ESP AP. Our PC with WiFi can't connect, and our Raspbery Pi has to retry for almost a minute if it connects at all. True for both unencrypted / WPA2.

2) When clients do connect, we can CURL GET / POST correct WiFi STA info. But if we POST deliberately incorrect STA SSID, the ESP gets a fatal exception.

It then runs in an endless loop where it starts AP+STA, starts DHCPS, etc then gets the exception. We have to flash the chip to stop the problem, indicating that User Param (0x3C-3F000) is corrupted.

We get the same result with ESP Flash Tool 2.3 and esptool.py.python2. Pls see screenshot. Only setting changed on InitConfig to create esp_init_data_setting.bin is CrystalFreq = 26MHz. We also tried writing "blank.bin" to User Param 0x3C000-0x3E000. Didn't help.

We've wasted a week on this. When it actually works, we do NTP, REST, JSON, etc with no issues. But we keep getting these two problems.
ESP Flash.PNG

Statistics: Posted by azapps — Sat Feb 06, 2016 2:46 am

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