Occasionally, when I send data with "AT+CIPSEND" for "AT+CIPSENDBUF", I received below return.
Recv xx bytes
After sending data, it takes 7 sec until receive "CLOSED" return.
I wonder my codes have some timing issues or other problems.
So, I want to check conditions why ESP returns "CLOSED" and avoid these conditions.
Would you share why ESP returns "CLOSED" or how I can check problem conditions?
If I need to check "error code" in this condition, please let me know how I can check it.
I try to input "AT+SYSLOG=1" or "AT+SYSLOG?", ESP only returns "ERROR".
p.s. I used ESP-WROOM-02D and please refer below firmware information.
AT version:220.127.116.11(Mar 19 2020 18:15:04)
compile time:Mar 24 2020 16:16:12
Bin version(Wroom 02):3.0.3
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