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2003-12-29 by gene_klein2000
Hi, I'm writing a programmer for the LPC210x series. When I look in the User Manual for the chip in chapter 17 there is a description how to write data to ram (Table 147 page 187). How must I calculate the checksum to send after I've send the data to the device ?
2003-12-29 by Richard
If you are interested in ISP programming of flash and RAM (including calculation and programming of the checksum) see: http://www.semiconductors.philips.com/files/products/standard/microco ntrollers/download/80c51/utilities/LPC210x_ISP.zip Rich --- In lpc2100@yahoogroups.com, "gene_klein2000" <gene_klein@h...> wrote: > Hi, > > I'm writing a programmer for the LPC210x series. When I look in the > User Manual for the chip in chapter 17 there is a description how to > write data to ram (Table 147 page 187). > How must I calculate the checksum to send after I've send the data to > the device ?
2003-12-29 by capiman@t-online.de
Hello Richard,
this is only the executible, right ?
So how can you see the calculation of the checksum ?
BTW: Is there already an ISP programmer with source for Linux ?
Greetings,
Martin
----- Original Message ----- From: "Richard" <richas@...> To: <lpc2100@yahoogroups.com> Sent: Monday, December 29, 2003 7:03 PM Subject: [lpc2100] Re: Checksum calculation for programming flash > If you are interested in ISP programming of flash and RAM (including > calculation and programming of the checksum) see: > > http://www.semiconductors.philips.com/files/products/standard/microco > ntrollers/download/80c51/utilities/LPC210x_ISP.zip > > > Rich > > --- In lpc2100@yahoogroups.com, "gene_klein2000" <gene_klein@h...> > wrote: > > Hi, > > > > I'm writing a programmer for the LPC210x series. When I look in the > > User Manual for the chip in chapter 17 there is a description how > to > > write data to ram (Table 147 page 187). > > How must I calculate the checksum to send after I've send the data > to > > the device ? > > > > > > Yahoo! Groups Links > > To visit your group on the web, go to: > http://groups.yahoo.com/group/lpc2100/ > > To unsubscribe from this group, send an email to: > lpc2100-unsubscribe@yahoogroups.com > > Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > >
2003-12-29 by James Dabbs
I'm looking for info on the ABI GCC uses with ARM7, like how parameters are passed, how the stack is set up, which registers are saved, etc., for GNU C and C++. I've got to adapt context switches and interrupt service routines within some existing code, and I'm having trouble finding a big picture on how this all works. Thanks.
2003-12-29 by Bogdan Marinescu
Go to www.arm.com and download the ARM ATPCS document. ATPCS (ARM-Thumb Procedure Call Standard) is the ARM's version of ABI and all compilers are supposed to adhere to it. GCC is no exception. --- James Dabbs <jdabbs@...> wrote: > I'm looking for info on the ABI GCC uses with ARM7, > like how parameters > are passed, how the stack is set up, which registers > are saved, etc., > for GNU C and C++. I've got to adapt context > switches and interrupt > service routines within some existing code, and I'm > having trouble > finding a big picture on how this all works. > > Thanks. > > __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/
2003-12-29 by Richard
Try it out, you can see the value of the checksum in the flash buffer screen. I know of no version in linux. Richard --- In lpc2100@yahoogroups.com, capiman@t... wrote: > Hello Richard, > > this is only the executible, right ? > So how can you see the calculation of the checksum ? > > BTW: Is there already an ISP programmer with source for Linux ? > > Greetings, > > Martin > > ----- Original Message ----- > From: "Richard" <richas@y...> > To: <lpc2100@yahoogroups.com> > Sent: Monday, December 29, 2003 7:03 PM > Subject: [lpc2100] Re: Checksum calculation for programming flash > > > > If you are interested in ISP programming of flash and RAM (including > > calculation and programming of the checksum) see: > > > > http://www.semiconductors.philips.com/files/products/standard/microco > > ntrollers/download/80c51/utilities/LPC210x_ISP.zip > > > > > > Rich > > > > --- In lpc2100@yahoogroups.com, "gene_klein2000" <gene_klein@h...> > > wrote: > > > Hi, > > > > > > I'm writing a programmer for the LPC210x series. When I look in the > > > User Manual for the chip in chapter 17 there is a description how > > to > > > write data to ram (Table 147 page 187). > > > How must I calculate the checksum to send after I've send the data
> > to > > > the device ? > > > > > > > > > > > > Yahoo! Groups Links > > > > To visit your group on the web, go to: > > http://groups.yahoo.com/group/lpc2100/ > > > > To unsubscribe from this group, send an email to: > > lpc2100-unsubscribe@yahoogroups.com > > > > Your use of Yahoo! Groups is subject to: > > http://docs.yahoo.com/info/terms/ > > > >
2003-12-29 by James Dabbs
Thanks. This is exactly what I need. Also, is there a compiler-set #define that tells you that the processor is an ARM or ARM-THUMB?
-----Original Message-----
From: Bogdan Marinescu [mailto:a_bogdan_marinescu@...]
Sent: Monday, December 29, 2003 1:51 PM
To: lpc2100@yahoogroups.com
Subject: Re: [lpc2100] ARM7 ABI for GNU
Go to www.arm.com and download the ARM ATPCS
document. ATPCS (ARM-Thumb Procedure Call Standard) is
the ARM's version of ABI and all compilers are
supposed to adhere to it. GCC is no exception.
--- James Dabbs <jdabbs@...> wrote:
> I'm looking for info on the ABI GCC uses with ARM7,
> like how parameters
> are passed, how the stack is set up, which registers
> are saved, etc.,
> for GNU C and C++. I've got to adapt context
> switches and interrupt
> service routines within some existing code, and I'm
> having trouble
> finding a big picture on how this all works.
>
> Thanks.
>
>
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http://docs.yahoo.com/info/terms/2003-12-30 by gene_klein2000
Hi, This is not the checksum I mean. This is the checksum for validating for valid user code and startup with the application and not with the boot block. The calculation of this checksum is described in the user manual. The checksum I mean is the one to be sent after sending uuencoded lines to the device. --- In lpc2100@yahoogroups.com, "Richard" <richas@y...> wrote: > Try it out, you can see the value of the checksum in the flash > buffer screen. I know of no version in linux. > > Richard > > > --- In lpc2100@yahoogroups.com, capiman@t... wrote: > > Hello Richard, > > > > this is only the executible, right ? > > So how can you see the calculation of the checksum ? > > > > BTW: Is there already an ISP programmer with source for Linux ? > > > > Greetings, > > > > Martin > > > > ----- Original Message ----- > > From: "Richard" <richas@y...> > > To: <lpc2100@yahoogroups.com> > > Sent: Monday, December 29, 2003 7:03 PM > > Subject: [lpc2100] Re: Checksum calculation for programming flash > > > > > > > If you are interested in ISP programming of flash and RAM > (including > > > calculation and programming of the checksum) see: > > > > > > > http://www.semiconductors.philips.com/files/prod ucts/standard/microco
> > > ntrollers/download/80c51/utilities/LPC210x_ISP.zip > > > > > > > > > Rich > > > > > > --- In lpc2100@yahoogroups.com, "gene_klein2000" > <gene_klein@h...> > > > wrote: > > > > Hi, > > > > > > > > I'm writing a programmer for the LPC210x series. When I look > in the > > > > User Manual for the chip in chapter 17 there is a description > how > > > to > > > > write data to ram (Table 147 page 187). > > > > How must I calculate the checksum to send after I've send the > data > > > to > > > > the device ? > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > To visit your group on the web, go to: > > > http://groups.yahoo.com/group/lpc2100/ > > > > > > To unsubscribe from this group, send an email to: > > > lpc2100-unsubscribe@yahoogroups.com > > > > > > Your use of Yahoo! Groups is subject to: > > > http://docs.yahoo.com/info/terms/ > > > > > >
2003-12-31 by robertadsett
--- In lpc2100@yahoogroups.com, "gene_klein2000" <gene_klein@h...> wrote: > Hi, > > This is not the checksum I mean. This is the checksum for validating > for valid user code and startup with the application and not with the > boot block. The calculation of this checksum is described in the user > manual. > The checksum I mean is the one to be sent after sending uuencoded > lines to the device. In my first quick reading of the user manual I had thought that referred to the standard uuencode checksum but on re-reading it doesn't appear to. My suggestion would be to use the read memory command to reverse engineer it. I suspect it's just a simple byte checksum (or possibly it's compliment), i.e. checksum = byte1 + byte2 + byte3 + .... One other thing I noticed in my testing. The version command is appears to be documented as returning <major>.<minor> It actually returns the two numbers on separate lines. I think it's just a matter of clarity not an actual documentation bug. The Philips utility is nice but I'd sure like a command line utility to replace it (I just have other things to do first). Robert
2004-01-05 by niall@feabhas.com
Sorry for the late response, but have you checked out: http://www.arm.com/products/DevTools/ABI.html <http://www.arm.com/products/DevTools/ABI.html> Niall. Niall Cooling BSc CEng MBCS MIEEE Director Feabhas Ltd. 5 Lowesden Works Lambourn Woodlands Hungerford Berks. RG17 7RY tel: +44 (0)1488 73050 fax: +44 (0)1488 73051 www.feabhas.com
-----Original Message----- From: James Dabbs [mailto:jdabbs@...] Sent: 29 December 2003 18:40 To: lpc2100@yahoogroups.com Subject: [lpc2100] ARM7 ABI for GNU I'm looking for info on the ABI GCC uses with ARM7, like how parameters are passed, how the stack is set up, which registers are saved, etc., for GNU C and C++. I've got to adapt context switches and interrupt service routines within some existing code, and I'm having trouble finding a big picture on how this all works. Thanks. _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/lpc2100/ <http://groups.yahoo.com/group/lpc2100/> * To unsubscribe from this group, send an email to: lpc2100-unsubscribe@yahoogroups.com <mailto:lpc2100-unsubscribe@yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .