How does transparent transmission mode work?

[Mattb]

Hello there
Is someone able to tell me how transparent transmission mode sends data? The documentation (https://www.espressif.com/sites/default/files/documentation/4a-esp8266_at_instruction_set_en.pdf ) states there is a 20ms delay between transmission and the maximum bytes sent will be 2048 bytes. Does this mean there is a packet sent every 20ms and the packet that is sent is whatever is in the buffer at the time up to 2048bytes?

If this is the correct thinking, my project requires sending a 7 byte packet every 4ms from an Arduino to an android phone via an ESP8266 (ESP-01) WIFI connection. So using this theory if I send a value (7bytes) every 4ms to the esp8266 then there should be 35bytes sent every 20ms and if I sample the android receive buffer every 20ms then I should find 35 bytes on this buffer. Is this the way the transparent transmission mode should work?

[Her Mary]

Yes, I believe that is true.

[Her Mary]

You can try command AT+CIPSENDBUF instead.