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bgColor	#ffffff
title	Q

Is there the possibility on having an memory usage overview?

Panel

bgColor	#ffffff
title	A

The usage of defined memory in GCC may be visualized with several methods. However, their correctness depends highly on your application.

In the linker script is the definition of available hardware memory areas. Into those areas, the sections containing code and variables, the program memory is stored.

Program memory created by the compiler usually consists out of the sections ".text", ".rodata", ".data" and ".bss". The sections ".heap" and ".stack" are user defined.

This directly shows, that the dynamic (user) program memory inside heap and stack area cannot be measured during compile- and link-time because they are user defined.

However, for the program memory it is possible to visualize this after link-time with a linker option or with the gcc toolchain.

Panel

bgColor	#ffffff
title	A Linker flag (>~ gcc 4.9.3)

To display the RAM and Flash usage in netX Studio, simply add the line ### 15 into the Targets folder wscript:

Code Block

language	cpp
linenumbers	true

    bld.program(
        target="netx90_app_iflash",
        name="netx90_app_iflash",
        description="Host Example using NXHX90-JTAG as Host",
        displaygroup="Targets",
        toolchain="gccarmemb",
        platform="netx90",
        source=sources,
        includes=includes,
        defines=defines,
        use=uses,
        stlib=['m', 'c', 'nosys'],
        linkerscript=["Linker/netx90_app_iflash.ld"],
        features=["group_lib"],
        linkflags=["-Wl,--print-memory-usage"], //############################ This line has to be added
        netx_type='netx90_rev0',
        cxxflags="-std=c++11",
    )

Panel

bgColor	#ffffff
title	A Postbuild Toolchain method (<=gcc 4.9.3))

To display the RAM and Flash usage in netX Studio, you have to modify the main wscript:

At its beginning with

Code Block

language	py
linenumbers	true

import os
from waflib.Context import STDOUT, BOTH
import subprocess

and around the build function with

Code Block

language	py
firstline	53
linenumbers	true

def prebuild(bld):
   print os.listdir(os.getcwd() + "\\build\\" + bld.get_conditions())
   print 'before the build is started'
 
def postbuild(bld):
   print 'after the build is complete'
   print os.listdir(os.getcwd() + "\\build\\" + bld.get_conditions())
   for root, dirs, files in os.walk(os.getcwd() + "\\build\\" + bld.get_conditions() + "\\Targets\\"):
       for file in files:
           if file.endswith(".elf"):
               cmd = [bld.all_envs["toolchain_gccarmemb"].get_flat('OBJDUMP').replace("objdump","size"), root + os.sep + file,"-Bxt"]
               result = bld.cmd_and_log(cmd, output = BOTH, quiet=STDOUT)
               print result[0]

def build(bld):
   bld.add_pre_fun(prebuild)
   bld.add_post_fun(postbuild)
   bld.autorecurse()

You will then receive this command line output in the build console:

Code Block
text data bss dec hex filename 0x31ef4 0xa54 0x1e48 214928 34790 C:\Users\user\Desktop\project\build\debug\Targets\NXHX90-JTAG\netx90_app_iflash.elf 0x31ef4 0xa54 0x1e48 214928 34790 (TOTALS)

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title	See also...

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