LPC210x board update
2003-12-10 by leon_heller
I ve added a bill of materials to my LPC210x board web page: http://www.geocities.com/leon_heller/lpc2104.html I ve had a small batch of the boards made.
Messages
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VPB bad read behaviour
2003-12-09 by Robert Adsett
I m seeing some odd behaviour in the VPB registers that I haven t been able to track down so far. So I thought I would check to see if anyone else had run
Poll results for lpc2100
2003-12-09 by lpc2100@yahoogroups.com
The following lpc2100 poll is now closed. Here are the final results: POLL QUESTION: Which microcontroller in an existing or planned design is most likely to
Re: [lpc2100] Re: Overclocking, risky, risky
2003-12-08 by microbit
Hi Bob, ... This is a very WISE decision and also sound advice Bob ! Surely you have been in the position where I have been on many occasions. : You run into
Re: Overclocking, risky, risky
2003-12-08 by lpc2100_fan
Hi, we also did some speed testing. From internal RAM (room temperature) we got the first suspicious behavior between 90 and 100 MHz. I guess this is very good
Re: Wiggler JTAG connections
2003-12-07 by leon_heller
... interface ... Wiggler, ... needed. I ve just tried removing them - it works OK. Leon
Re: [lpc2100] Wiggler JTAG connections
2003-12-07 by Arie de Muynck
... Except on JTAG interface line nTRST. The purpose of this line is to keep the JTAG logic in a reset state, so the device can function normally when no JTAG
Re: [lpc2100] Wiggler JTAG connections
2003-12-07 by Leon Heller
... From: Ben Dooks To: Sent: Saturday, December 06, 2003 10:56 PM Subject: Re: [lpc2100] Wiggler JTAG connections
RE: [lpc2100] Delay routines
2003-12-07 by Robert Adsett
... A timer using timer 0. This is a first pass and still could use some refinement and verification but it does show a method that works. Using the
Re: [lpc2100] Wiggler JTAG connections
2003-12-06 by Ben Dooks
... I am always of the opinion that pull-up resistors are a good idea. -- Ben Q: What s a light-year? A: One-third less calories than a regular year.
Overclocking
2003-12-06 by Leon Heller
Here is a note from someone about overclocking the LPC210x: http://runryder.com/helicopter/t66907p2/ He has had one running at 120 MHz. Leon -- Leon Heller,
Re: Floating Point performance
2003-12-06 by lpc2100_fan
Hi Robert, all my messages show up almost instantly. I never use e-mail though, always posting direct inside the yahoo group. Bob ... least one ... site I
Re: [lpc2100] Floating Point performance
2003-12-06 by Robert Adsett
... Umm, floating point gives dynamic range. It generally reduces precision. The next question that comes to mind is what sort of communication channel are
RE: [lpc2100] Delay routines
2003-12-05 by Robert Adsett
... I would be surprised it they couldn t be used that way. I see two ways of doing it. One is to use interrupts on match. The other is to poll the status
Re: [lpc2100] Re: LPC's w/ external address/data bus
2003-12-05 by Bill Knight
I didn t put in the new part numbers (sorry). They are the LPC 2214/2219/2224/2229 The factory is still working on the DOCs. The parts are suppose to be
Best way of synchronizing Timers 0, 1 & PWM?
2003-12-05 by Duncan Entwisle
I m going to use the PWM and Timer 1 to generate signals for driving a display, however that requires that the timers for the PWM & Timer 1 start at the same
Re: LPC's w/ external address/data bus
2003-12-05 by Richard
Those are 64 pin devices with and without CAN interfaces, they do not have external buses. Richard ... yesterday. ... essentially
LPC's w/ external address/data bus
2003-12-05 by Bill Knight
I downloaded a new eval copy of the ARM toolsuite from Keil yesterday. In the docs I found reference to four new parts. They were essentially the LPC
Floating Point performance
2003-12-05 by harshit suri
Hi All 1)Can we perform floating point operations using the latest lpc series MCUs? i specifically need to perform a PID controller and need flaoting point for
Re: [lpc2100] Re: Delay routines
2003-12-05 by Bill Knight
Interesting, yahoo stripped all of my open/close parenthesis. -Bill
Re: [lpc2100] Re: Delay routines
2003-12-05 by Bill Knight
While I have yet to implement this on the LPC ARMs the following is an approach I have been using with success for years. At system startup setup a timer
RE: [lpc2100] Re: Delay routines
2003-12-05 by Curt Powell
That sounds great; let s hope they follow with a LPC2126 for us RAM-hungry types! ... From: lpc2100_fan [mailto:lpc2100_fan@yahoo.com] Sent: Friday, December
Re: Delay routines
2003-12-05 by lpc2100_fan
Curt, it is my understanding that you can use the match registers without changing the I/O pins but I will make sure this statement is true. In regards to the
RE: [lpc2100] Delay routines
2003-12-05 by Curt Powell
I had looked at the timers before but it was unclear if you would have to give up GPIO pins by putting them into alternate function mode (we re already
Re: [lpc2100] Delay routines
2003-12-05 by Robert Adsett
... I m just starting to look into this myself. A pointer in the general direction. Look at timer 0 (or 1) and the match registers). I ll followup with more
Re: [lpc2100] New file uploaded to lpc2100
2003-12-05 by microbit
Hi Leon, ... Thanks for the relief :-) I can imagine it must be a time consuming task to keep the list spam free. As you undoubdtedly would know, Bruce Cannon
Re: [lpc2100] New file uploaded to lpc2100
2003-12-05 by Leon Heller
... From: microbit To: Sent: Friday, December 05, 2003 2:24 AM Subject: Re: [lpc2100] New file
Re: [lpc2100] New file uploaded to lpc2100
2003-12-05 by microbit
Hi Leon, Looks like you might have to consider Bruce s strategy of delaying intiial posts, as invariably these spam scumbags found their way into the system.
Re: Power up sequence
2003-12-04 by skulchak
Thank you Richard. I did not know that Nohau compiles check sum automatically. I assumed that I had to do it. Regards, Skulchak. ... complement ... worry ...
Re: Power up sequence
2003-12-04 by Richard
Skulchak, The valid code signature at 0x14 is merely the two s complement of the sum of the vector table. That way when the checksum for the whole vector
Re: [lpc2100] Power up sequence
2003-12-04 by Robert Adsett
... I don t understand. Why not just use Philips download utility? Also does Nohau s utility not deal with this already? ... Considering that the processor
Power up sequence
2003-12-04 by skulchak
Hello group, I am trying to come up with a simple power up sequence for my application using IAR. So that I could just FLASH application into the part, and run
Re: [lpc2100] Re: Introduction to the group
2003-12-04 by Hugh O'Keeffe
Hi Shinji, Thanks for your feeback. I recommend the following: 1. Continue to use the GNU tools provided by Ashling. These are not time limited in any way when
DDS update
2003-12-04 by Leon Heller
Using the latch has eliminated nearly all the glitches. The remaining ones are very small and probably won t matter. I ll try to get rid of them, anyhow.
Artciles not readable ! (Only from Ben Dooks)
2003-12-04 by capiman@t-online.de
Hello Ben, can you change the properties of your email programme, to put the messages not in attachments ? Everytime i see an email from you it is empty, but
Re: Does LPC21XX support programming via Can Bus ???
2003-12-04 by Tutors of ESAcademy
... We at ESAcademy are working on several CAN and CANopen related Philips LPC2xxx projects. Some of these will be available for free, others only as part of a
Re: [lpc2100] Re: DDS working
2003-12-04 by microbit
I think the server gets silly at times, or whatever. There was a stage very recently where I didn t get posts from the CW430 group for like 12 days, and then
Re: Does LPC21XX support programming via Can Bus ???
2003-12-04 by lpc2100
IAP call to program the flash takes care of the RAM execution requirement. i.e. program talking to CAN can execute in flash and erase/program flash sectors
Re: [lpc2100] Delay routines
2003-12-04 by Robert Adsett
Curiouser & curiouser. I just had my latest message echoed back in about 10 minutes and then this one showed up. It looks like it took about 5 hours. I ve
GDB, wiggler and breakpoints
2003-12-03 by Robert Adsett
Sigh, has anyone had any success setting breakpoints using a wiggler and GDB? I thought I had something but today I realized it doesn t actually set the
Re: [lpc2100] Simple test program - is now instruction pipeline/VPB question
2003-12-03 by Robert Adsett
... Got it. Cleaning up by support and generalizing it so I could place it with some newlib support and I realized that I had misplaced the pll divider field
Re: [lpc2100] Re: DDS working
2003-12-03 by otc_friend
I have the same feeling. - Henry ... Von: leon_heller An: lpc2100@yahoogroups.com Datum: Mittwoch, 3.
Re: Does LPC21XX support programming via Can Bus ???
2003-12-03 by lpc2100_fan
... Hi, depending if you are talking about a virgin device or reprogramming a device that has been programmed before it does not / it does. There is no low
Re: DDS working
2003-12-03 by leon_heller
... I have the same problem as well. They appear almost immediately on the group s web page, but sometimes the emailed version takes a long time. I ve got a
Re: [lpc2100] DDS working
2003-12-03 by Ben Dooks
... yeah, the best way is to use some form of latch to clean the signal up. -- Ben Q: What s a light-year? A: One-third less calories than a regular
Delay routines
2003-12-03 by Curt Powell
Can anyone point me to some delay() routines for the lpc? I can handle milliseconds and above but I need something that works down in the microseconds range
Re: [lpc2100] DDS working
2003-12-03 by Robert Adsett
... Even with assembly I would expect to see a significant glitch. Even at max speed I was seeing several hundred nS to perform both operations. (see earlier
Re: [lpc2100] Re: DDS working
2003-12-03 by microbit
Hmmm, I didn t see the post of Ben, seems like I m in the same boat as Robert here :-) Obviously not all posts are always routed fully to every member. -- Kris
Re: DDS working
2003-12-03 by leon_heller
... Thanks, Ben. That speeded it up somewhat. Compiling for Release rather than Debug made a big difference as well. I ve never used C before for this sort of
Re: [lpc2100] DDS working
2003-12-03 by Ben Dooks
... yeah, I pointed out the code being produced is loading the table value twice, which is why I suggested that the sawtooth[ptr] be loaded into a temporary