Lpc2000

Nic
  For an example project using the GNU tools, you might want to have a
look at UT050418A.zip in the Files section of this mailing list in
Yahoo.

Regards
-Bill Knight
R O SoftWare &
http://www.theARMPatch.com


On Sun, 11 Sep 2005 17:19:54 -0700 (PDT), nic@... wrote:

>Hi Dan,

>Thanks for your recommendation, and I agree for any commercial project
>that would be the fastest (and consequently also the cheapest) way to
>begin. My preference would be the IAR system and I have already priced it
>from our local distributer at AUD590.00 for the LPC2148 KickStart board,
>USB JTAG programmer and 32K version of EWARM.

>However my decision to use the GNU toolchain is very deliberate, in fact
>the ARM processor was selected for this project primarily because of the
>availability of the GNU toolchain!

>The project is not a commercial project, it is a collaborative project to
>design and build an unmanned aerial vechicle (UAV). I expect the design
>will ultimately be larger than 32k and with the exception of myself, the
>entire design team consists of students so buying multiple fully-fledged
>systems from Keil or IAR is not really an option. If we did have a budget
>for development tools available we would probably have selected the
>Freescale DSP56F803 with CodeWarrior because the DSP architecture is much
>more appropriate for the repetitive calculations we require.

>Given that I have already resigned to my fate, spending many more hours
>learning to use the GNU toolchain than it would take me to earn the money
>to buy the IAR system...

>Does anyone know where I can find some example C code for LPC2148 with
>header file, startup assembly file, and GNU makefile and linker script?

>Kind regards,

>Nic
>_____

>From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com] On Behalf
>Of dan@...
>To: lpc2000@yahoogroups.com
>Subject: [lpc2000] Trouble with LPC2148 (first project)


>The fastest way to get started is with one of the quick start kits from
>IAR or Keil. See LPCTools.com. These complete kits of hardware and
>demo compilers, JTAG units are $200-300...



>That will give you a working code base that you can compile, download,
>test and modify. The only restriction is you cannot compile programs
>larger than 32K. These are really quite big for most embedded work, so
>you may not need to buy the complete compiler for LPC based products.
>(My experience is ARM/Thumb code is about the same size as 8051 code, if
>that helps you in sizing the problem).



>I like the IAR tool set. They have several tiers of products. The
>$2000 product is plenty for LPC. (I have the full product). Keil
>actually has two compilers: their own and a front end for GNU. While
>GNU is priced well, I like the GUI offered by IAR and Keil - I think the
>IDE saves time (and I used to be a command line advocate). If you want
>to end up in GNU, you might buy one of the Keil development kits.



>Buy the quickstart kit of choice. Play with it seriously for a week,
>then start thinking about the real design and environment. I tried (and
>did) learn ARM starting with GNU and a development board based on ARM
>tools. The learning curve was steep and long, even though I have many
>years experience in embedded products.



>Dan





>_____

>From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com] On Behalf
>Of nic@...
>Sent: Sunday, September 11, 2005 2:39 AM
>To: lpc2000@yahoogroups.com
>Subject: [lpc2000] Trouble with LPC2148 (first project)



>Dear lpc2000@yahoogroups.com,

>I would like to use the LPC2148 for a C project, but I can't get any
>program to run on the processor. This is my first time using the ARM
>microcontrollers.

>I am using the GNUARM toolchain with GCC to write and compile code and
>the
>Philips LPC2000 Flash Utility v2.2.2 to upload the hex files to the
>flash.
>I am using the IAR KS2148 Kickstart Kit for LPC214x (w/ LPC2148)
>hardware
>(made by Olimex).

>I have uploaded many different hex files to the processor. Some hex
>files
>I have downloaded from the internet "Compare Flash" OK after uploading,
>but hex files I have compiled do not. I think this is because the local
>copy has a NOP at address 0x14 and the flash copy has a checksum
>generated
>by the flash utility at this address.

>I have followed the "ARM Cross Development with Eclipse" PDF tutorial by
>Jim Lynch which includes an example program using the GNUARM toolchain
>and
>GCC for LPC2106. I made some modifications and tried to use the example
>for LPC2148 (specifically, I used an lpc214x.h header file from a Keil
>example, changed the IODIR, IOSET, IOCLR instructions to IODIR0, IOSET0,
>IOCLR0 and increased the flash size in the linker script). Everything
>compiles and uploads as I would expect, but the program does not run
>when
>I take BSL high and reset the processor.

>Does anyone know where I can find some example C code for LPC2148 with
>header file, startup assembly file, and GNU makefile and linker script?

>Failing this, does anyone know where I can find an example hex file to
>test that the board and the Philips LPC2000 Flash Utility are working
>OK?

>Kind regards,

>Nic