Re: [lpc2000] Which tools for ecos and LPC210x?
2004-02-23 by Jean-Rene David
... eCos has not been ported to the lpc2000 family at all, for any eval board. I m working on a port as we speak. Can t tell you when it ll be done. ... eCos
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Re: [lpc2000] Digest Number 96
2004-02-22 by Ben Dooks
... I remember when I was lucky to have an ARM2 in my Acorn A3000! (those where the days, a man, his machine, and only a copy of BBC BASIC Assemler
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Bill Knight
The kernel of a preemptive RTOS might want to. Bill On Sun, 22 Feb 2004 14:32:55 -0500, Robert Adsett wrote: ... I just had a chance to read the app note (I
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... hmm, I don t yet see where that would be useful in a task switch but maybe it can happen as a side effect. I ve got a thread to worry at anyway. Atmel
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by David Willmore
... I wouldn t expect the same kinds of optimizations on uCs that you may see on larger systems. IBMs xcc for the POWER arch does a lot of bizarre stuff to
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by David Willmore
... What a tangled web we weave when first we practice *edit* to write system code. All I can say in my defence is take a look at the Linux kernel code and
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... That triggers a thought. There is a writeback cache on the LPC. It s only a single entry and I thought it was only for the SRAM but maybe it s more
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi John, ... Because of the confusion reigning, I m trying it alternating between HI-TECH C and also on CrossWorks for ARM. I m not proficient with the actual
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by J.C. Wren
Kris, Instead of stepping around, why not use objdump on the elf file to produce an assembly listing, and take a look at the ordering? objdump -dSt foo
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi all, Well, here e some feedback to this bizarre issue. Everything was already volatile, except for the local temp variable. ... Declaring temp volatile
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by J.C. Wren
... [snip] You re right about the context of the processor status save. The only reason I can think of for modifying the PSW like that would be in a task
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... That I can understand (I ve done it myself), but even in that case you don t modify the status register of the process you are interrupting but only your
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi David, I was certainly used to fairly aggressive and neat opts with IAR, but I ve never seen it change the sequence of things, that seems a bit rich. Mind
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by J.C. Wren
... It s a common method of creating interrupt prioritization. If you have a slow interrupt routine, or something more critical, it s common to re-enable
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by J.C. Wren
... If write_to_reg is a function, GCC will in NO WAY change the ordering. If they are macros, then unless the person who wrote the headers is a complete
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... I just had a chance to read the app note (I presume this is the one http://www.atmel.com/dyn/resources/prod_documents/DOC1156.PDF) and it appears to be
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... ... Thanks for the pointer. Robert Freedom has no meaning of itself. There are always restrictions, be they legal, genetic, or physical. If
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Robert Adsett
... GCC is more prone to this than other compilers I ve worked with. Most of them seem to take the approach of no re-ordering unless provably beneficial
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by David Willmore
... barrier() is just a family of constructs which, like volatile, tell the compiler what it s allowed to move around and what it s not. Consider the
Re: [lpc2000] Digest Number 96
2004-02-22 by microbit
Hi Bill (Wiese), ... I read your post with great interest, and as you can tell I m quite new to ARM. It seems sign of the times is that we can expect single
Re: [lpc2000] Digest Number 96
2004-02-22 by Bill Wiese
Hi Brian... ... Yeah, I know. A patent is really just the right to sue . And if you let something slide by not defending it (because of time or financial
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi David, ... I m not too familiar with GNU (I presume barrier() is GNU). Whta s a barrier() statement. Forgive me if I convey dumb or lazy. I _do_ want to
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by David Willmore
... temp = (tx_head+1)%RS232_SIZE; ... I d second this. I see nothing in here to stop a compiler from moving stuff around to it s hearts content. You might
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
... Hi Bill et al, In light of the previous revelations, I tried what I described before. Does anyone know what is going on here ? Outputting a character into
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
I haven t had any problems at all with the direct write. The weirdest things were happening though with the masking. For example, comm_tx[tx_head++]=ch; would
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Bill Knight
On Sun, 22 Feb 2004 11:18:03 -0500, J.C. Wren wrote: ... [snip] Why should the direct write cause this problem? The issue with read-modify-write makes perfect
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi Bill, I wouldn t want to attempt to work around the problenm with the default handler. More that I would want it to invoke a very specific prompt, so I know
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Thanks Bill, I ll certainly keep that one in mind, because I ll be porting a mini_OS, loosely based on Oleg Skidan s SOS, which I ported to CrossWorks for
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by J.C. Wren
... [snip] Why should the direct write cause this problem? The issue with read-modify-write makes perfect sense, but the write should be an atomic operation.
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Bill Knight
I don t think using the default handler to mask the problem is the answer. You might however, use it to inform the user &/or yourself of an internal error so
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Bill Knight
Version 2 of the UART, Blinky LED codeis now posted. I went ahead and protected the code which re-enables the uart interrupt in addition to when it is
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi Bill, Thanks for the prompt response. This has actually been my main problem. It s not my style when I develop to just change my SW, and go oh, yeah,
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by Bill Knight
Kris Thanks for spotting this. It s the old spurious interrupt problem. The fix is to disable global interrupts around the first read-modify-write
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
... is asserted ? ... Thinking about this again, I presume that the bit # in VicRawIntr corresponds to the VIC Slot # ? That would mean that ARM Core, Embedded
Re: [lpc2000] UART TX FIFO and INTs problem - SOLVED
2004-02-22 by microbit
Hi all, This s a hairy one - ARM Gurus, please read this !!! (Bill, this will cause a problem in your UART package too, since you set VicDefVectAddr to the
Re: [lpc2000] Wiggler Protel Files
2004-02-22 by Leon Heller
... From: gokbektas To: Sent: Sunday, February 22, 2004 10:41 AM Subject: [lpc2000] Wiggler Protel Files ...
Wiggler Protel Files
2004-02-22 by gokbektas
Is this compatible with LPC210x? http://www.wearable.ethz.ch/fileadmin/edu/projects/ws01/wearpos/hardware.html Where can I find protel files for a compatible
Which tools for ecos and LPC210x?
2004-02-22 by gokbektas
Is it possible to start/learn ECOS developement with IAR EWARM 3.40a / CrossWorks or Keil? Does they support ECOS? I am new to embedded OS and looking for a
Re: Code Protection
2004-02-22 by redsp@yahoo.com
... If I understand how this will work, field upgrades will be impossible? It seems very risky to me to blow away a working version of a program before loading
Re: [lpc2000] Re: Code Protection
2004-02-21 by microbit
Hi Igor, A speech recognition solution that worked out well (you probably know them) was using Neural Network in an 8 bit, low current. (Speaker
Re: [lpc2000] Re: Code Protection
2004-02-21 by Igor Janjatovic
Hi Kris, You probably won t believe me but for this project I checked every ARM7 solution that exists on this planet :) Data Sheets, Application Notes, User
Re: [lpc2000] CrossWorks UART example
2004-02-21 by microbit
Paul s right. What he means is that if you start up your terminal SW while the serial data is being output from the LPC, it will interpret the first high- low
RE: [lpc2000] CrossWorks UART example
2004-02-21 by Paul Curtis
I assume that the serial data is being sent at full rate, so it appears as a synchronous stream. In this case, with no pauses, it s possible for the UART to
Re: [lpc2000] Jtag adapter and 40pin module
2004-02-21 by Leon Heller
... From: To: Sent: Saturday, February 21, 2004 8:09 PM Subject: [lpc2000] Jtag adapter and 40pin module
Jtag adapter and 40pin module
2004-02-21 by peter.kuhar@guest.arnes.si
Hello, Which software can be used with jtag adapter in files section on yahoo? Is it posible to get files for making(pdf,ps or gerber) the 40pin module whos
[lpc2000] CrossWorks UART example
2004-02-21 by gokbektas
It works fine, but if I close serial port and re-connect with PC without making anything on LPC, weird data appears at PC. If I reset LPC, it turns to normal.
Re: [lpc2000] Specifications for 38 pin Mictor Connector
2004-02-21 by Leon Heller
... From: vrrraju To: Sent: Saturday, February 21, 2004 3:36 PM Subject: [lpc2000] Specifications for 38 pin
RE: [lpc2000] Re: Mixing assembly and C...
2004-02-21 by Robert Adsett
... You want to do something like this ? void Startup( void) { SetupVICentry( InterruptRoutine, InterruptEntry); } Where InterruptRoutine is your wrapper. And
Re: [lpc2000] Re: Code Protection
2004-02-21 by James Dabbs
... I used one recently and it worked great. However, they have no internal FLASH, and no serial boot capability, so designs using these parts are generally
Specifications for 38 pin Mictor Connector
2004-02-21 by vrrraju
Dear Friends, I am designing a board for LPC2106 which I want to have provision for ETM trace and secondary JTAG. I want to have a 38-pin Mictor connector for