Re: [lpc2000] Re: Problem with watchdog
2005-12-11 by Robert Adsett
... Umm minimal chances are what the watchdog is there to protect against. If the chance isn t minimal you can make a very good case that is should be covered
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GNUARM tools at www.gnuarm.com
2005-12-11 by Rick Collins
I provide a web site where compiled versions of the GNUARM tools are hosted, www.gnuarm.com. I can pretty much leave it alone and it generates enough revenue
Re: [lpc2000] Re: Problem with watchdog
2005-12-11 by Ake Hedman, eurosource
... The absolute majority of watchdogs, internal or external, function by toggling a bit from time to time. Where in the code you do this toggling is
Re: Problem with watchdog
2005-12-11 by derbaier
... the ... received ... It sounds like you have described a really robust watchdog timer!! It detects and stops fragile software. It s function is NOT to make
Re: [lpc2000] Re: Problem with watchdog
2005-12-11 by Robert Adsett
... Actually, that is rather the point. The idea is to prevent being able to accidentally satisfy the watchdog with writes from multiple places in the
Re: [lpc2000] Re: Problem with watchdog
2005-12-11 by Ake Hedman, eurosource
... At least I would say that its a bit strange behavior for a watchdog. Anyway there is a work around and it appears to work well (at least in my case). I
RE: [lpc2000] Re: JTAG debugging tools
2005-12-11 by Paul Curtis
Tong, ... J-Link is from Segger, ULINK is from Keil. ... Only the J-Link is supported on CrossWorks. -- Paul Curtis, Rowley Associates Ltd
RE: [lpc2000] New file uploaded to lpc2000
2005-12-11 by Joel Winarske
... Yes. USB CDC 1.1 ACM Serial Emulation. I implemented this as one of my design requirements is to support Win32, Mac OS X, and Linux. USB CDC ACM will
RE: [lpc2000] Interrupt driven UART example
2005-12-11 by Joel Winarske
... http://www.keil.com/download/docs/288.asp?bhcp=1 Joel
RE: [lpc2000] A/D simulation passes but on board fails
2005-12-11 by Joel Winarske
... Keep in mind the reset value of MEMMAP is 0, which is Boot Loader Mode. Excerpt from User manual: Criterion for valid user code: The reserved ARM
Re: [lpc2000] New file uploaded to lpc2000
2005-12-11 by Doug Sutherland
A while ago a virtual com port driver was uploaded. I have been wondering about this: is it possible to create a virtual com port driver on USB MCU that does
Re: [lpc2000] Re: Problem with watchdog
2005-12-11 by Tom Walsh
... I ve been following this thread with interest as I expected to use the watchdog in my application. The old design used a MAX690 where you would toggle the
Re: [lpc2000] Interrupt driven UART example
2005-12-11 by Tom Walsh
... Yeah, take a look at the rdcf2 source, that driver has been banging away for days without failure: *http://tinyurl.com/8bmk8 TomW * ... -- Tom Walsh - WN3L
Interrupt driven UART example
2005-12-11 by gussabina
Hi: I need to handle a high rate serial connection using the UART, but my interrupt driven routines are not working fine. The Rx interrupt works fine, but when
A/D simulation passes but on board fails
2005-12-11 by hdxlh74
I am trying to utilize the A/D converters of the LPC2138. I have successfully coded a routine that utilizes AD0.0 and outputs a values on the serial port. The
Re: [lpc2000] Re: JTAG debugging tools
2005-12-11 by Tong Le
Hi I am new to the Phillips Arm I was gonna use the JLink from Keil for debug. Will this work? Please Advice Dominic Rath wrote: Hello,
Re: [lpc2000] Re: olimex lpch2214 documentation
2005-12-10 by Dominic Rath
I believe it s a .chm file, not .chn . On linux, you can use xchm to read this proprietary format. Regards, Dominic
Re: [lpc2000] Re: olimex lpch2214 documentation
2005-12-10 by George M. Gallant, Jr.
John, Thanks for the quick reply. I normally use Linux and Firefox but they have no clue what to do with a chn file. George ... [Non-text portions of this
Re: olimex lpch2214 documentation
2005-12-10 by junderwo12
I bet you re using Windows XP. It s a feature . Save the file on your local disk. Right-click on the file and select Properties . There is an entry which
Re: [lpc2000] Re: Problem with watchdog
2005-12-10 by Ake Hedman, eurosource
OK Guys, I can confirm that the WD problem is solved in my case. Thanks a lot all! (Description of solution below.) I think this definitely should be
Re: [lpc2000] olimex lpch2214 documentation
2005-12-10 by Uwe Arends
George, ... do you mean this one: http://www.olimex.com/dev/pdf/H2214.chm ? I can access it just fine, maybe you should try again. If it still doesn t work,
Re: [lpc2000] olimex lpch2214 documentation
2005-12-10 by Bertrik Sikken
... Hash: SHA1 ... I was able to download the H2214.chm file without any problems. Mail me privately if you want it and I ll forward it to you. Regards,
olimex lpch2214 documentation
2005-12-10 by ggallant571
I am looking for documentation for the Olimex LPCH2214 board. Their web site has it as .chn but I get unable to access messages. I do get the top level index
Re: [lpc2000] Re: Problem with watchdog
2005-12-10 by Ake Hedman, eurosource
;-) /Ake ... -- ... Ake Hedman (YAP - Yet Another Programmer) eurosource, Brattbergavägen 17, 820 50 LOS, Sweden Phone: (46) 657 413430 Cellular: (46) 73 84
Re: [lpc2000] Re: Problem with watchdog
2005-12-10 by Martin Maurer
Why Karma ? Use Paypal... :-) Regards, Martin ... From: Ake Hedman, eurosource To: Sent: Saturday, December
Re: [lpc2000] Re: Problem with watchdog
2005-12-10 by Ake Hedman, eurosource
Hi and thankyou for this discussion. I just want to confirm that my problems also go away when I turn of IRQ s while feeding the dog. I have just tested it on
Re: Problem with watchdog
2005-12-10 by brendanmurphy37
Ken, Thanks for the reference to the previous discussion on this: it s exactly what I was looking for (confirmation/proof that there is indeed a problem). By
Re: [lpc2000] Re: JTAG debugging tools
2005-12-10 by Michael Johnson
Hi, ... We ve written our own parallel port device driver. Not because there s anything wrong with the Magraigor stuff we just prefer to have our own code. ...
Re: [lpc2000] Re: JTAG debugging tools
2005-12-10 by Dominic Rath
Hello, ... Yes, Crossworks bitbangs the parport itself, you don t need OCDRemote anymore. But OCDRemote supports hardware breakpoints, just search recent posts
Re: JTAG debugging tools
2005-12-10 by householder_lpc
Thank you for a very clear and comprehensive answer. It it so that, if you use Crossworks, you don t use OCDRemote anymore, so Crossworks bitbangs jtag
[lpc2000] Re: Problem with watchdog
2005-12-10 by Robert Adsett
... Which, of course, is what it should do since that is what was being asked of it. IE the sequence disable interrupts critical code restore interrupts will
Re: Problem with watchdog
2005-12-10 by Ken Wada
I have been wondering about that myself. If you look very closely at the past threads, in this forum, others have been wondering about this also. I have
Re: [lpc2000] Re: Problem with watchdog
2005-12-10 by Karl Olsen
... From: Ken Wada To: Sent: Saturday, December 10, 2005 12:17 AM Subject: [lpc2000] Re: Problem with watchdog
Re: Problem with watchdog
2005-12-09 by Ken Wada
ok... I can surely tell you this... I had the Watchdog working perfectly, until I started adding interrupt support, (mainly device drivers for the UART). After
Re: Problem with watchdog
2005-12-09 by brendanmurphy37
Karl, Thanks for this: I was worried I d been misreading the manual in someway, or missing something. We don t turn interrupts off to feed the watchdog, as
Re: [lpc2000] Re: Problem with watchdog
2005-12-09 by Karl Olsen
... From: Ken Wada To: Sent: Friday, December 09, 2005 9:02 PM Subject: [lpc2000] Re: Problem with watchdog ...
Re: Problem with watchdog
2005-12-09 by Ken Wada
Asynchronously turning off and on interrupts in the main body of your code is problematic. Instead of tempting fate; I decided to play the overly-cautious
RE: [lpc2000] OT: PPP implementation for uIP
2005-12-09 by Joel Winarske
... Follow-up: I ended up working with the PPP stack from Contiki. It s a stripped down version of the lwIP version. It was an ok start. After spending some
Re: Problem with watchdog
2005-12-09 by brendanmurphy37
Ken, If you follow workaround 1 in the ATMEL app note (and some of the examples in some of the ARM documentation) referred to in the other response to this,
Re: Problem with watchdog
2005-12-09 by brendanmurphy37
Ken, I m still curous about your statement the processor expects a WRITE(0xAA) on the very next cycle . Where is this documented? It may be true, but if so,
Re: [lpc2000] Re: Problem with watchdog
2005-12-09 by David Hawkins
Hi guys, The uCOS-II RTOS port for the ARM processor defines an OS_ENTER_CRITICAL and OS_EXIT_CRITICAL pair of macros, inside which you can perform atomic
Re: Problem with watchdog
2005-12-09 by Ken Wada
... space ... to ... cycle ... watchdog. It makes a bit difference! If you WRITE (0x55), the processor expects a WRITE(0xAA) on the very next cycle. If this
Re: Problem with watchdog
2005-12-09 by Ken Wada
From extensive testing...I have found that the LPC22xx just ignores an invalid feed. I have come across this in Motorola s Power PC chip also. Ken Wada ...
Re: [lpc2000] Re: Problem with watchdog
2005-12-09 by Ake Hedman, eurosource
Ken, yes this is probably it (as zdravko_k_d@yahoo.com also pointed out earlier). Strange not to have an atomic feed. First time I have come across that. I
Re: Problem with watchdog
2005-12-09 by brendanmurphy37
Ken, Can you explain why you think there s a problem with an interrupt between the two writes? According to the User Manual: Once 0xAA is written to the
Re: [lpc2000] Re: Problem with watchdog
2005-12-09 by Ake Hedman, eurosource
... Good thought! Sadly it did not help on my problems. But I agree this is probably something one should do. The watchdog is initialized to 0xff on reset
Re: Problem with watchdog
2005-12-09 by Ken Wada
Basically, your method works fine... UNTIL: you start adding interrupt service routines! This is why: void WDOG_pet() { WDFEED = 0xAA; /* Interrupt
Re: JTAG Download problems
2005-12-09 by dagoss123
There is a jumper (J9) that is labeled JTAG. It is installed. Thanks. Doug ... mode. ... is on) ... eval ... (and ... Comm
RE: [lpc2000] JTAG Download problems
2005-12-09 by Michael Rubitschka
Hi On my boards I must set a jumper to activate the debug, download mode. Did you set the jumper ? Cheers Michael
Re: [lpc2000] JTAG debugging tools
2005-12-09 by Leon Heller
... From: householder_lpc To: Sent: Friday, December 09, 2005 2:00 PM Subject: [lpc2000] JTAG debugging