ESP8266 Community Forum

- Mon Jan 04, 2016 8:46 pm #37923 got the parsing working with checking ..
those #$%@#$@ if/else/else if ... {} brackets are a bitch

Thinking about how to do serial , however current code is stopping over night,, suspect
memory slowing disappearing [LEAK]

How do I check for available memory ? freeMem is not good cmd ?
I only have 1 include #include <ESP8266WiFi.h>
do I need another ?

TIME for SCORPION.....will continue tommorrow thx in advance...mike

- Mon Jan 04, 2016 10:23 pm #37929 For memory usage, there is the function "system_get_free_heap_size()" from SDK, therefore you need to include "user_interface.h".

- Tue Jan 05, 2016 11:29 am #37978 added --> #include "user_interface.h"
added--> int heap;
added--> heap = system_get_free_heap_size();
Getting this during compile------------ What is it telling me ?

Arduino: 1.6.5 (Windows 7), Board: "Generic ESP8266 Module, Serial, 80 MHz, 40MHz, DIO, 115200, 512K (64K SPIFFS), ck"

wifi-web-servag.ino.cpp.o: In function `__static_initialization_and_destruction_0':
C:\ Arduino1.6.5/wifi-web-servag.ino.ino:25: undefined reference to `system_get_free_heap_size()'
wifi-web-servag.ino.cpp.o:(.text.setup+0x43): undefined reference to `system_get_free_heap_size()'
collect2.exe: error: ld returned 1 exit status
Error compiling.

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- Tue Jan 05, 2016 11:48 am #37981 Since the include file from SDK is a plain C not a C++, you need to include it that way :

Code: Select allextern "C" {
#include "user_interface.h"
}