ESP-WROOM-02 Link Error
Posted: Wed Mar 27, 2024 11:01 am
- Hello all,
- i am new to ESPRESSIF Wifi module. I am using ESP-WROOM-02 module with stm32 microcontroller using AT commands in my project.
- I have uploaded lastest AT firmware version ESP8266-AT-V2.2.1.0\factory\factory_WROOM-02.bin to esp module.
- I have developed a web server application in stm32. Esp module is configured as softAP.
- STM32 reads web ui content (.html, .css, .js files) from sd card and send to esp module when requested by the connected station.
- all works fine but some times it produces error.
- error in sending response to station.
- AT+CIPSEND returns ERROR and also not able to close that particular link i.e. AT+CIPCLOSE returns ERROR.
- means no further request comes to that link id.
- [b]for example requests are received at link 0-4 and response are sent to all request respective their link id successfully.
- but sometimes while sending response to a link id lets say 3 AT-CIPSEND=3,len returns error and if i try to close link 3 sometimes it closes and returns OK and sometimes it returns ERROR.
- if AT+CIPCLOSE returns error then new request is not received at link 3 until web page is reloaded at station.
- link 3 is able to receive new request only after web page reload at station.
- please guide me to solve this problem[/b]