ESP8266 Connection Issues

[azapps]

We're running ESP SDK IOT Demo 1.5.1 (unmodified) on Adafruit Huzzah. We have two serious problems.

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_Faye]

Hi,

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 !