Hi Tim, The code generates the Data Abort after executing the instruction at 0x68. 0x00000068: 34823004 .0.4 STRCC r3,[r2],#4 Before this instruction is executed the value of r2 is 0x04000000 After this instruction is executed the value of r2 is 0x04000004 Now both these memory locations are not in the RAM or Flash space and hence the data abort. It should have been 0x40000000 and 0x40000004 As a sanity check, before executing the instruction at 0x68, I changed the value of r2 to 0x40000000 and the execution continued with no problems. Amit --- In lpc2000@yahoogroups.com, "tah2k" <tah2k@y...> wrote: > > I forwarded additional info via email. > Thanks- > Tim > > --- In lpc2000@yahoogroups.com, "Amit" <emailakb@y...> wrote: > > > > Hi, > > > > I just tried the same procedure and used the Flash ISP to load the > > code. I then used the AxD to load the debug symbols. Everything > seems > > to be working fine. I can single step, run at full speed...etc > > > > If you have a small blinky application just send it to my email > > address and I can check it in my enviornment. > > > > amit > > > > --- In lpc2000@yahoogroups.com, "tah2k" <tah2k@y...> wrote: > > > > > > Multi-Ice autodetects the core based on the macrocell. It > detects > > > ARM7TDMI-S ETM. This looks right to me. To verify memory > contents, > > I > > > downloaded the flash image using Philips Flash Utility, and it > > > matches my code perfectly. > > > > > > --- In lpc2000@yahoogroups.com, "ian48harry" <ahi93@d...> wrote: > > > > > > > > Have you "told" Multi-ICE what chip you are dealing with? The > > > AT91 > > > > is plain ARM7TDMI, the LPC2000 is -S. Other tools allow > specific > > > > selection of chips rather than basic core types. > > > > > > > > Ian > > > > > > > > --- In lpc2000@yahoogroups.com, "tah2k" <tah2k@y...> wrote: > > > > > > > > > > I understand where you are coming from, but I am trying to > > > prevent > > > > > buying more tools. From what I understand, the keil tools > > > require > > > > > their own emulator to actually run the debugger, and I > already > > > have > > > > > 3 multi-ice. > > > > > > > > > > I am missing something, this should be trivial. If I reload > the > > > > > blinky application, it works just fine. > > > > > > > > > > I have also got a keil mcb2100 board and I have the same > issue. > > > > > > > > > > > > > > > --- In lpc2000@yahoogroups.com, "Dan Beadle" > <dan.beadle@i...> > > > > wrote: > > > > > > I suggest you download the Keil tools. > > > > > > > > > > > > > > > > > > > > > > > > Download their demos. That will verify that everything is > > > > working > > > > > properly. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > From there, you could try the ARM tools with the Keil elf > > > > output. > > > > > At that > > > > > > point, you know that the board and the code are good. So > you > > > > > would only be > > > > > > working one problem. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _____ > > > > > > > > > > > > From: tah2k [mailto:tah2k@y...] > > > > > > Sent: Monday, December 20, 2004 4:15 PM > > > > > > To: lpc2000@yahoogroups.com > > > > > > Subject: [lpc2000] Data Aborts > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Still not up and running with my Arm tools and the Keil > > > MCB2130. > > > > > > > > > > > > I setup the Arm AXD debugger to run the following script > on > > > > > startup: > > > > > > > > > > > > loadsymbols C:\Projects\Sampler_2138 > > > \AppFlash\Output\AppFlash.axf > > > > > > setpc 0x0 > > > > > > sreg cpsr 0xd3 > > > > > > spp vector_catch 0 > > > > > > spp semihosting_enabled 0 > > > > > > > > > > > > It basically loads the debug symbols for the image in the > > 2138 > > > > > > flash, initializes the CPSR, sets the pc to 0, and > disables > > > > > > breakpoints at the Arm exceptions. > > > > > > > > > > > > The debugger loads the source file correctly and the PC is > > set > > > at > > > > > > 0x0 which is a branch to my startup handler at 0x20. > However, > > > if > > > > I > > > > > > run, or singlestep, or do anything, I get a "Data abort". > > > > > > > > > > > > Also, if I try and display memory starting at 0x0, the > > > debugger > > > > > > gives an error "Memory access failed" and only gives the > > > contents > > > > > of > > > > > > addresses 0-20, the rest 0's. > > > > > > > > > > > > I thought perhaps the data abort had something to do with > the > > > > > > remapping done by the Philips boot loader, but I checked > the > > > > > MEMMAP > > > > > > flag and it is set to 1, so I am running the flash at 0. > > > > > > > > > > > > I'm new to the part and evaluating it against the AT91 > > > pocessors, > > > > > > and I am fresh out of ideas. The memory bus is internal so > > its > > > > not > > > > > > like I can hook up my logic analyzer too get some ideas. > > > > > > > > > > > > Is it possible the Philips memory accelerator is partly to > > > blame? > > > > > > Tehre must be otehrs using Arm tools with this part so I > am > > > > hoping > > > > > > it is something trivial. > > > > > > > > > > > > Any ideas are appreciated. > > > > > > Tim > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Sponsor > > > > > > > > > > > > > > > > > > > > > > > > ADVERTISEMENT > > > > > > > > > > > > > > > > > > > > > > > > > > > <http://us.ard.yahoo.com/SIG=1297jigje/M=295196.4901138.6071305.30011 > > > > > 76/D=gr > > > > > > > > > > > > > > > > > > > > > oups/S=1706554205:HM/EXP=1103674517/A=2128215/R=0/SIG=10se96mf6/*http > > > > > :/compa > > > > > > nion.yahoo.com> click here > > > > > > > > > > > > > > > > > > > > > > > > <http://us.adserver.yahoo.com/l? > > > > > M=295196.4901138.6071305.3001176/D=groups/S= > > > > > > :HM/A=2128215/rand=272492819> > > > > > > > > > > > > > > > > > > > > > > > > _____ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > * To visit your group on the web, go to: > > > > > > http://groups.yahoo.com/group/lpc2000/ > > > > > > > > > > > > * To unsubscribe from this group, send an email to: > > > > > > lpc2000-unsubscribe@yahoogroups.com > > > > > > <mailto:lpc2000-unsubscribe@yahoogroups.com? > > > subject=Unsubscribe> > > > > > > > > > > > > * Your use of Yahoo! Groups is subject to the Yahoo! > > > > > > <http://docs.yahoo.com/info/terms/> Terms of Service. > > > > > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been removed]
Message
Data Abort
2004-12-22 by Amit