The bulk of the AT commands consist of a request followed by a response, which has implicit flow control since you can send the next request when you are ready. The exception to this is the +IPD packet which can be sent at any time when you have an open connection. In the case of TCP, if the remote end sends data the device will keep receiving +IPD packets regardless if it wants to throttle the connection. If the device's buffers overflow then TCP data will be lost.
As a way to allow flow control and prevent overflow I was wondering if any of the following are feasible:
-Would it be feasible to add a new command to set the max amount of +IPD data that can be received, along with a command to indicate that the device is ready to receive more data?
-Alternatively, what about a mode where +IPD data is never sent and instead there is a new command the device issues to read data off of the device
Do either of these solutions seem reasonable to implement? Is this something that could by supported officially if a working version was made? Finally, do you have any tips on how I could attempt to make this change? I see there is an AT example in the ESP8266 SDK (ESP8266_NONOS_SDK\examples\at). Is this where the ESP8266 AT command firmware comes from? Is this the right starting point? Thanks in advance for the help.
Who is online
Users browsing this forum: No registered users and 3 guests
Newbies Start Here
Are you new to ESP8266?
Unsure what to do?
Dunno where to start?
Start right here!
We also have a RTOS version and a MESH version too!
Complete listing of the official ESP8266 related documentation release by ESPRESSIF!
Must read here!