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Forum: ARM programming with GCC/GNU tools Require documentation to create application in WinARM


Author: Dharmendra Vasadia (dharmendra)
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Hi All,

I have, with the help of this forum, installed WinARM. i did following
to created application:

1) open PN editor
2) create new project
3) add LPC21xx.h and
   that add  makefile, crt0.s, LPC2138-ROM.ld manually(copied from some
other application)
4) then create my own C file with name main.c. by default in makefile
target    file name is main that is why i have kept name of the file
main.c

now Questions is:

1) what other file i have to added, to crete application?
2) What the procedure to create executable module that can i download to
my LPC2138
3) I tried, couldn't found any documentation that describe complete How
to use WinARM. so if you find or have any documetion please forward me

HUGE thanks in advance

Dharmendra
09898455770

Author: Clifford Slocombe (clifford)
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Starting with teh last one:
> 3) I tried, couldn't found any documentation that describe complete How
> to use WinARM. so if you find or have any documetion please forward me
It is not that simple. WinARM is simply a distribution of tools from
more than one source put together for your convenience. You need to
consult the documentation for the individual tools (some of which is
included with the distribution). Even then the GNU toolchain and Newlib
library are not ARM specific, they are available for a number of
architectures, so the documentation is mostly generic in nature.
Information on how to use WinARM as a whole is provided mostly in the
form of numerous examples.

> 1) what other file i have to added, to crete application?
Possibly nothing, some functions in the standard library call stubs that
you must implement in order for the code to link or to work correctly.
These are detailed in the syscalls section of the Newlib documentation,
several working examples are provided with WinARM. If you are using
stdio calls or dynamic memory allocation you need to implement these.

> 2) What the procedure to create executable module that can i download to
> my LPC2138
There are numerous examples for LPC313x provided with WInARM and at
http://gandalf.arubi.uni-kl.de/avr_projects/arm_projects/. The
compiler/linker produce an object module in ARM-ELF format. Some
debuggers/programmers can load this format directly, otherwise you use
the arm-elf-objcopy utility (documentation at
http://sourceware.org/binutils/docs-2.17/binutils/...)
to produce the format used by the tool you are using (typically an Intel
Hex file). A FLASH programming tool for LPC2xxx devices can be
downloaded from the Philips/NXP website
(http://www.standardics.philips.com/support/techdoc...).
The makefiles in the WinARM LPC2xxx examples already invoke objcopy and
the Philips ISP utility automatically to allow a build and program
operation. Exammine the examples (or just use them directly) to see how
it is done.

Clifford

Author: Martin Thomas (Guest)
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Just a small correction: I have included Martin Maurer's lpc21isp in
WinARM for flashing thru the LPC2000 bootloader and this tool is
configured in the makefiles and used for the "make program". lpc21isp's
homepage: http://guest.engelschall.com/~martin/lpc21xx/isp/

The NXP/Philips utility offers a GUI so it may be interesting for
beginners. There is also a tool from Embedded Artists ("sponsored by
NXP") http://www.esacademy.com/software/flashmagic/fmfree.htm . Both not
included in WinARM so far but available for free from the given URLs.

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