ESP8266 Community Forum

- Sun Nov 23, 2014 2:18 pm #3186

in file READ.ME set that to download one toochain from
https://github.com/esp8266/esp8266-wiki/Toolchain
but server throwed 404.

Looks like the instructions have moved here: https://github.com/esp8266/esp8266-wiki/wiki/Toolchain. I will update the readme link shortly.

- Sun Nov 23, 2014 7:32 pm #3197 Updated code and binaries, changes are as follows:

• update to SDK 0.9.3 (thanks to github.com/jaseg)
• add support for static IP address on STA interface
• fix line endings for extended syntax result codes in V0 format
• add +IREADY unsolicited result code on module boot

- Mon Nov 24, 2014 3:28 am #3207 @igrr
Error N1:
Using transmission to TCP stack. The stack can be busy. The stack arrange impossible if the numbers of free bytes is unknown. TCP stack has 5800 bytes (max). MSS <= 1460. The internal function "espconn_sent" has no answer if transmission was successful. "Espconn_tcp_sent" throws incoming data, if there is no free space.
Error N2:
Each transmission takes a ‘heap’ memory. Free allocate memory occurs on a timer event... Multiple short transmission = cause event 'malloc assert!' and reset the module.

- Mon Nov 24, 2014 3:53 am #3208

"Espconn_tcp_sent" throws incoming data, if there is no free space.

Does it return some error code that can be used to determine how much data was lost, if any?

Free allocate memory occurs on a timer event...

Is this documented somewhere, or maybe you have access to the source code? Is there a function that will collect unused memory that we can call?