Re: [lpc2000] Faster integer division with KEIL
2005-12-13 by Robert Adsett
... That is not be the worst of it. I did some indirect measurements of division time when working up the second revision of the timing support in the
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Re: J-Link - flash erasing
2005-12-13 by jayasooriah
... It is not difficult to erase the entire flash by downloading code (that does not depend on code in boot sector) into RAM and running it from there.
Re: self-destruct code in Philips boot sector
2005-12-13 by jayasooriah
... Yes, but still this primitive method is a infinitely superior to the technique Philips uses in its LPC devices. ... Yes, this is for use in a laboratory
Re: LPC2103 won't program
2005-12-13 by Gus
ok I found the manual in the file section! Now, rowley tool can t program the chip and I can t find a new release of the philips flash utility. Was anyone able
Re: [lpc2000] Faster integer division with KEIL
2005-12-13 by Tom Walsh
... At some point in time, the rubber has to meet the road... Assembler is about as fast as you get, division + multiplication is a series of iterative
Re: [lpc2000] Re: RS485 9 Bit Comms on LPC2148
2005-12-13 by Tom Walsh
... Absolutely, it would be impossible to use the fifo when changing the stick parity state. If the fifo is used, you would be, potentially, changing the
LPC2103 won't program
2005-12-13 by Gus
I am not able to connect to LPC2103 chip. I tried to read the ID using LPC flash utility and tried to connect through JTAG with no luck at all. I have DBGSEL
Re: [lpc2000] Faster integer division with KEIL
2005-12-13 by Charles Manning
... OK, I have not tried this out, but I m quite surprised it takes soooooo long. Keil have a good reputation and I would have expected a better result than
Sotware Watchdog; was Re: Problem with watchdog
2005-12-13 by Bruce Paterson
... I have done something like this in the past for a multi-tasking system. The supervisory task was responsible for feeding the hardware watchdog. It was one
Re: Faster integer division with KEIL
2005-12-12 by arrek_x
Hi, an example division procedure (unsigned 32-bit) is described in ARM s application note named ARM DDI 0029E. I ve tried this with ARM-GCC as separated
Faster integer division with KEIL
2005-12-12 by uedogan
Hi everybody, i m currently working with the LPC2136 and the latest KEIL C-compiler. Does anybody know some functions that provide a (much) faster 16-bit
J-Link - flash erasing
2005-12-12 by arm_beta_tester
Is there a possibility to erase the whole flash memory in LPC2xxx chip using the IAR J-LINK programmer/debugger with IAR EWARM?
Re: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Charles Manning
... AFAIK, there are some ARM proprietary issues with Jazelle which mean it can t be included in the Linux codebase. AFAIK, you need to get a Jazelle license
RE: [lpc2000] Re: Embedded JAVA and µCLinux on LPC22 94
2005-12-12 by Joel Winarske
... Thanks for pointing this out Doug.
Re: Embedded JAVA and µCLinux on LPC2294
2005-12-12 by thomas_ploeger
O.K I ll check it out. Thanks Thomas
RE: [lpc2000] Re: Embedded JAVA and µCLinux on LPC22 94
2005-12-12 by Joel Winarske
... If you don t want to touch C in your embedded micro project you might look at some of these options: http://jstik.systronix.com/compare.htm Joel
Re: [lpc2000] Re: Embedded JAVA and µCLinux o n LPC2294
2005-12-12 by Doug Sutherland
... Blackfin DSP with MMU boots uclinux. Gumstix with MMU uses uclinux. There are countless other examples. Perhaps it was made for MMU-less devices but in
Re: Embedded JAVA and µCLinux on LPC2294
2005-12-12 by thomas_ploeger
Joel, yeah you re right. µCLinux is for devices w/o MMU. Thats the point, like Doug said. This OS is not memory save. Java could do everything. Is like in C
Re: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Doug Sutherland
... Yes but it s often used on devices with MMU. Gumstix (PXA255) for example. You need lots of ram to run these interpreters. Even on an ARM720T with MMU and
Re: Embedded JAVA and µCLinux on LPC2294
2005-12-12 by thomas_ploeger
Yeap, I understood guys. Thanks for the input. I m really unsure what to do. The best would be I put the 2294 in the garbage and switch to an ARM9 with MMU.
RE: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Joel Winarske
... uClinux is for devices without a MMU.
RE: [lpc2000] Olimex LPC2148 and IAR UART example
2005-12-12 by Joel Winarske
... This incorporates the old license. Their next release will have the revised license.
Re: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Doug Sutherland
I really don t think any of those JVMs will work on ARM7TDMI without MMU. Perhaps on an ARM720T with lots of RAM. Even on X-Scale with 64MB most of the JVMs
RE: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Joel Winarske
... This runs uClinux and implements Waba: http://www.linuxdevices.com/news/NS7588348856.html http://waba.sourceforge.net/
Re: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Doug Sutherland
I think you d need an ARM with an MMU to run any of the normal Java interpreters (ie JamVM, kaffe etc). However, there is this: http://www.rtjcom.com/home.html
Re: LPC2214 and 16 bit flash
2005-12-12 by Ken Wada
... use the 2106 before)? 2106? The 2106 does not support an external address or data bus. Anyway...to answer your question. Yes, there are differences in
RE: [lpc2000] Embedded JAVA and µCLinux on LPC2294
2005-12-12 by Joel Winarske
... Useful JVM Performance Chart: http://www.gumstix.org/tikiwiki/tiki-index.php?page=java http://wiki.java.net/bin/view/Linux/AlternativeJavaVMsSDKs
Embedded JAVA and µCLinux on LPC2294
2005-12-12 by thomas_ploeger
Hello, does somebody made experience to use embedded Java and µCLinux on this chip. I try to figure out what I need. O.K. µCLinux is easy but where I can get
RE: [lpc2000] Crossworks vs IAR and Keil uVision
2005-12-12 by Joel Winarske
If you re looking to spend up to 4k for development software, you might want to research the products first, then post your lingering questions. Useful for
RE: [lpc2000] Phytec-LPC2294 (IAR / J-Link) QS guide
2005-12-12 by Joel Winarske
... This may be a good start: Program Files IAR Systems Embedded Workbench 4.0 arm src examples Philips LPC22xx Phytec-PCM023 ... See message #11307
Re: Problem with watchdog
2005-12-12 by Ken Wada
... Precisely my point. It appears as if this is an extra undocumented feature. Ken Wada ... lot ... for ... the ... for ... interrupt ... communications ...
Re: RS485 9 Bit Comms on LPC2148
2005-12-12 by mhoneywill
Thanks Tom, for the quick reply. ... I will try what you suggest to transmit the 9th bit. Do you turn the FIFO off permanently, or only when you are
Phytec-LPC2294 (IAR / J-Link) QS guide
2005-12-12 by mahbub1833
hi, Anyone please send me a quickstart guide of Phytec LPC-2294 using IAR workbench and IAR J-link adapter? How Would I integrate Keil uVision3 and IAR JLink?
Re: [lpc2000] GNUARM tools at www.gnuarm.com
2005-12-12 by 42Bastian Schick
... How about a small sentence on the download page: Please klick one of the ads to help financing this page. -- 42Bastian Schick
Re: WARNING: problem reading state of external interrupt lines.
2005-12-12 by brendanmurphy37
Thiadmer, Thanks for the suggestion. However, we ve determined that it s definitely a feature of the LPC213x. The reason I phrased it as I did was that we
Re: [lpc2000] RS485 9 Bit Comms on LPC2148
2005-12-12 by Tom Walsh
... I ve a 9bit comm running now using an LPC2138 and LPC2106, both processors are using the internal uarts to do 9bit communications. You are correct, you
RE: [lpc2000] Olimex LPC2148 and IAR UART example
2005-12-12 by Stephen Synakowski
Hello again Joel, thanks alot for your tool. I have the uart code working. I would like to check out your port of the EFSL for IAR and the LPC2148 if it is
Re: WARNING: problem reading state of external interrupt lines.
2005-12-12 by Thiadmer Riemersma (ITB CompuPhase)
Hello Brendan Murphy, On our LPC2138-based design, we noticed too that you cannot use a pin as EINT and GPIO at the same time, and we used the same
Re: Problem with watchdog
2005-12-12 by brendanmurphy37
Robert, Thanks for the reference to the watchdog paper - I hadn t seen it before, and it s certainly very good i/p to watchdog design. I d agree with the
RealMonitor within LPC Flash
2005-12-12 by kibobo59
Hi, the LPC2106 user manual deals with Realmonitor code within the flash memory (chap. 20). An example code is even given (p.218) but there isn t any mention
Crossworks vs IAR and Keil uVision
2005-12-12 by householder_lpc
Does the Crossworks environment allow you to build a professional quality program? Other than the compiler, are there big limitations of Crossworks as opposed
Re: self-destruct code in Philips boot sector
2005-12-12 by Rick Collins
... I suppose they could generate an interrupt on execution of any part of the bootloader other than the first few bytes which would contain code to turn off
Re: Zylin CDT installation - solution
2005-12-12 by householder_lpc
I found the solution to my own problem. Eclipse didn t find the cdt- feature , because it was not the right version. The version of the plugin was
Re: Zylin CDT installation
2005-12-12 by lynchzilla
... eclipse ... of ... I got this e-mail a couple of days ago from Eelco Duivenstijn that might be the answer. I haven t investigated it yet since I ve just
Zylin CDT installation
2005-12-12 by householder_lpc
I ve been trying to get the Zylin CDT to work on Eclipse, but my attempts have been futile. As Jim Lynch wrote in his book, and as is written on the Zylin
re: self-destruct code in Philips boot sector
2005-12-12 by jayasooriah
Hello, An application code being debugged on LPC device that crashes can execute code in boot sector and cause the device to self-destruct. This is because the
RS485 9 Bit Comms on LPC2148
2005-12-12 by mhoneywill
Hi, I m implementing a comms protocol which requires RS485 half duplex comms with a 9 bit data word for the first byte. I m new to the LPC214x chips so was
RE: [lpc2000] Re: JTAG debugging tools
2005-12-12 by Joel Winarske
... The J-Link is also compatible with any development environment that supports RDI, two examples are IAR and Keil. IAR supports J-Link with or without an
Re: Problem with watchdog
2005-12-11 by derbaier
... True enough. :-) ... for ... Minimal is NOT zero, so conservative hardware design pratices dictate erring on the side of caution. IMHO, that reasoning
Re: LPC2214 and 16 bit flash
2005-12-11 by smoutpatrick
... Ken, thanks for the feedback. Regarding topic 5°, any differences in vector setup between using internal flash and external flash (did use the 2106