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Clemens Kirchgatterer
@everslick
it just adds defines i.e. umm_malloc malloc ...
so yes, i guess i have to wrap umm*
marksev1
@marksev1
https://www.youtube.com/watch?v=fPDBZUztAhY here i found code so that the gesture sensor can work with esp8266 :)
Clemens Kirchgatterer
@everslick
hmpf, slight annoyance: my __wrap_malloc functions get mangled even though i declare them extern "C"
Mario Mikočević
@mozgy
sigh, #1916 stolen code ..
Michael Miller
@Makuna
@mozgy stolen? They had copied code and made it into a usable Arduino Library, code that is not marked with any license, and they gave accreditation to that original code. What are you seeing that I didn't?
Clemens Kirchgatterer
@everslick
is there a way to get the number of bytes sent over a network interface? like e.g. ifconfig ?
Ivan Grokhotkov
@igrr
yes, check this header file: https://github.com/esp8266/Arduino/blob/18f66e99693020a758b8f5ac92e042cbdecb7760/tools/sdk/lwip/include/lwip/stats.h
LWIP_STATS_DISPLAY is not enabled in lwIP config, so IP_STATS_DISPLAY() functions will not work
Ivan Grokhotkov
@igrr
ah, my bad. LWIP_STATS is disabled in default build of lwIP
https://github.com/esp8266/Arduino/blob/18f66e99693020a758b8f5ac92e042cbdecb7760/tools/sdk/lwip/include/lwipopts.h#L1482
But you can change that line locally and use lwIP built from source.
To do that, you need to be using git version of the core, and select "Core Development Module" board from Tools menu. It will have an additional option to select lwIP variant used.

Just tried that myself, seems to be working fine.
Add 

extern "C" {
  #include <lwip/stats.h>
}

to the sketch

Ivan Grokhotkov
@igrr
lwip_stats.ip.xmit returns something sane, lwip_stats.etharp.xmit and lwip_stats.link.xmit do not seem to work
Clemens Kirchgatterer
@everslick
thank you very much. any chance that those stats could be made available in the default build? i open a can of worms, if i have to redo those changes every time i update esp8266/Arduino. :-/
IMHO performance measures are painfully missing
with your help i can now track heap memory (with the malloc wrapper) but my cpu load measurment is very cumbersum. i count the number of yield and delay calls and estimate some cpu load from that :-(
it would also be interesting how much cpu time is spent in the core and how much in 'user space'.
or is there something like a 'idle' time (sleeping) ?
Ivan Grokhotkov
@igrr
First we need to check how much RAM does enabling stats consume... Then, if the value is not huge (or if we can enable just a portion of these stats), we can make this change once we switch to GCC-built lwip as the default one.
#1926
Clemens Kirchgatterer
@everslick
IC
looks promising. :)
Me No Dev
@me-no-dev
@igrr see there was a point of adding source build option not just for me :)
Ivan Grokhotkov
@igrr
@me-no-dev yeah, i see the point :)
since i was building from the command line, it was never actually a trouble for me to do make -C path/to/lwip all install && ./build-sketch.py
but it is good to be able to do that from the IDE :)
Clemens Kirchgatterer
@everslick
what was the make option to set a define from command line?
Ivan Grokhotkov
@igrr
make CPPFLAGS=-DLWIP_STATS=1
Clemens Kirchgatterer
@everslick
or i could use sed to chang that particular define in lwipopts.h
thx, will try this first :)
Ivan Grokhotkov
@igrr
maybe it needs some quotes around -DLWIP_STATS=1
Mario Mikočević
@mozgy
@me-no-dev yes, thats a copy and one that do not even work on all OLEDs, I don't like when people put their names in credits for something copied and barely functional
there are several OLED libraries that are way better than this, imnho the best is https://github.com/squix78/esp8266-oled-ssd1306
Ivan Grokhotkov
@igrr
oh, I wonder why it's not added yet. it's a great library
Mario Mikočević
@mozgy
none did a PR I suppose
Me No Dev
@me-no-dev
@mozgy maybe you meant to ping @Makuna ? :)
Mario Mikočević
@mozgy
crap
one tab too many, apologies :)
Me No Dev
@me-no-dev
no probs :)
Mario Mikočević
@mozgy
heck, even my OLED lib is better :) ;)
nice, 2.2.0 release, gz and (beer) to @igrr
Clemens Kirchgatterer
@everslick
I believe we have to change on line in Arduino/tools/sdk/lwip/src/Makefile:
BUILDDEFINES = -D_ets ...
to
BUILDDEFINES += -D_ets
don't we?
Clemens Kirchgatterer
@everslick
cd $(SDK_ROOT)/lwip/src ; make BUILD_DEFINES="$(LWIP_DEFINES)" install
works
cd $(SDK_ROOT)/lwip/src ; make CPPFLAGS="-DLWIP_STATS=1" install
does not
but the first has the disadvantage that i have to redefine ALL build defines