Re: [lpc2000] Re: AT91SAM7 Yahoo! group
2005-01-24 by Robert Adsett
... I didn t either but it didn t show up when I did a search. It does now, go figure. Robert Freedom has no meaning of itself. There are always
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Re: LPC2000 and EMC radiation (Application radio modems)
2005-01-24 by charlesgrenz
Hi Joseph, To true. The real question is the LPC2138 one of those processors? If so, then we may have to box it. reagards, Charles
Re: LPC2000 and EMC radiation (Application radio modems)
2005-01-24 by phlpcmicro
Hi Charles, Thanks for the suggestions - all relivant details.... However some cores do radiate abormally higher than others. Using an RF probe and a spectrum
Re: Code optimization problem
2005-01-24 by Richard
I ran into a problem with the Keil compiler and code optimization. The default optimization level was such that lines of code that did dummy reads of
Re: LPC2000 and EMC radiation (Application radio modems)
2005-01-24 by charlesgrenz
Hello, I am currently in the middle of a design for the 2138. EMI is very important in the design. Are you used multilayer boards? How about series resistors
Re: AT91SAM7 Yahoo! group
2005-01-24 by Rick Collins
... group ... Sorry, I guess I figured it would not be hard to find the group... http://groups.yahoo.com/group/AT91SAM7/
Re: LPC2000 and EMC radiation (Application radio modems)
2005-01-24 by tsvetanusunov
... this is very interesting topic, I can t find any info on this in LPC datasheets, but we found interesting feature: when LPC PLL is enabled if you have near
JTAG - /TRST Pin state on the LPC213x
2005-01-24 by jim_e_dallas
FYI, I just found out that for the JTAG interface to work proprly on the LPC213xdevices, P0.31 (/TRST) needs to be tied high. (unless you are want to reset the
LPC2000 libraries
2005-01-24 by Gus
Hello, For newbies (or experts!) I made this library that has almost all functions you need to get your LPC project going. I would be happy to add any other
Re: Code optimization problem
2005-01-24 by Gus
In my case, my code doesn t work when optomization is enabled! Gus
LPC2000 and EMC radiation (Application radio modems)
2005-01-24 by phlpcmicro
Hi All, Some micro s have terible radiation characteristics and are unsuitable to in radio modems with sensitive analogue frontends. ARM controllers are used
Re: [lpc2000] PWM with 60MHz?
2005-01-24 by 42Bastian Schick
... Do you write 5 or 4 into MSEL ? With 5, you get 84MHz. VPBDIV = 0 ? ... ^^ ... -- 42Bastian Schick
Code optimization problem
2005-01-24 by delta delta
Hello, We are using GNU C compiler and Philips LPC2294 ARM processor. We need to know how code optimization is used in GNU compiler? Can we exclude some files
LPC2138 power consumption
2005-01-24 by Henrique
Hi, I m considering using the new LPC2138 instead of the LPC2114 processor, but I have power supply constraints. Should I expect to see a major current
PWM with 60MHz?
2005-01-24 by gorazd_grkman
on philips offical web site i found this: http://www.semiconductors.philips.com/markets/mms/products/microcontro
Re: [lpc2000] Strange ISP Problem
2005-01-24 by Thomas Patrick
Have you tried other com port for ISP ?? Nice Guy wrote: I m using an olimex 2106 header board and I m having problems getting ISP to work.
Strange ISP Problem
2005-01-24 by Nice Guy
I m using an olimex 2106 header board and I m having problems getting ISP to work. The philips ISP program will not do a thing, simply says unable to
Re: 2138 Data Abort Loading SSP Reg
2005-01-24 by dsidlauskas1
Woops! The problem is with the Keil Simulator, not the part or code. It runs fine on the hardware. Dave S.
Re: [lpc2000] accurate pulse measurements
2005-01-24 by onestone
Thanks Bill, I m earwigging here for a while trying to pick up enough on the LPC2139 to seem as if I know what I m doing. ;?} Al
Re: 2138 Data Abort Loading SSP Reg
2005-01-24 by embeddedjanitor
Perhaps it is because these are 16-bit registers? Try #define SSPCR0 (*((volatile unsigned short *) 0xE0068000)) ... SSP
2138 Data Abort Loading SSP Reg
2005-01-23 by dsidlauskas1
This one instruction program creates a Data Abort when setting an SSP Register. Anyone know what s going on? int main (void) { #define SSPCR0
Re: [lpc2000] accurate pulse measurements
2005-01-23 by Robert Adsett
... I haven t gone through this in any sort of detail, but doing floating point in an interrupt is at least questionable. At the very least you need to check
Re: [lpc2000] accurate pulse measurements
2005-01-23 by dasbento@aeiou.pt
I m using 3 capture channels (3 signals). I have linking each signal to an capture pin and also linked to a generic input. The captures are configured for
Re: [lpc2000] accurate pulse measurements
2005-01-23 by Bill Knight
Al Yes you can, if you want to implement two interrupts per cycle. The project this was for had a number of interrupts firing off much of the time. Because we
Re: [lpc2000] Re: AT91SAM7 Yahoo! group
2005-01-23 by Robert Adsett
... That would be a web forum though, I loathe web forums. Anyway we ve strayed off topic. Robert Freedom has no meaning of itself. There are always
Re: [lpc2000] Rowley CrossWorks ARM support --any I2S
2005-01-23 by microbit
Hi Gus, ... Atmel AT91SAM7 has I2S amongst others as part of its SSC (Synchr. Serial Controller). -- Kris
Re: [lpc2000] Re: accurate pulse measurements and tilt classification
2005-01-23 by onestone
... Unless you have really poorly written software (like monstrous ISR s) it is highly unlikely that you w9ill miss any edge event when using an ADXL202. The
Re: [lpc2000] accurate pulse measurements
2005-01-23 by onestone
Can t you just use a single timer and toggle the bits in the control register that set the trigger edge? I haven t studied LPC2000 in any great detail yet, but
Re: AT91SAM7 Yahoo! group
2005-01-23 by glennskidoo
... group ... hope ... There is also a website dedicated to Atmel s AT91 series chips. Click on forum and you ll see a section for the AT91SAM7 series.
Re: [lpc2000] Re: accurate pulse measurements and tilt classification
2005-01-23 by Robert Adsett
... I stand corrected. I had forgotten about that. ... True but with a 1 mS period you ve got a long time between edges. Unless you expect to change by the
Re: accurate pulse measurements and tilt classification
2005-01-23 by chazeltopman
... Not impossible, just convoluted: o Set PINSEL0 back to GPIO for that pin o read input value from IOPIN o change PINSEL0 back to timer capture ... You must
Re: [lpc2000] AT91SAM7 Yahoo! group
2005-01-22 by Robert Adsett
... Link Rick? Robert Freedom has no meaning of itself. There are always restrictions, be they legal, genetic, or physical. If you don t believe me, try
AT91SAM7 Yahoo! group
2005-01-22 by Rick Collins
I saw that there were people posting questions about the Atmel SAM7 ARM chips in other Yahoo! groups. So I thought I would start a group just for these chips.
Re: LPC2138
2005-01-22 by Rick Collins
... He s already banned in my groups. I also started receiving direct emails from them to the email address I use in these groups.
Re: [lpc2000] accurate pulse measurements
2005-01-22 by Bill Knight
We am doing something similar with two capture inputs to the same timer. - setup 1st capture input to capture the time of the rising edge - setup 2nd capture
Re: LPC2138
2005-01-22 by leon_heller
... flash ... than an ... I ve sent him an email, asking him to stop doing it. He ll get banned if he does it again. Leon Moderator
Re: [lpc2000] Re: LPC2138
2005-01-22 by Alex Holden
... That s the third advert for your product you ve sent us in less than an hour. -- ... If it doesn t work, you re not hitting it with a big enough hammer
Re: complier stuff for LPC2138
2005-01-22 by leon_heller
... it s ... It s actually very easy, you don t need to build the tool chain. Download the Cygwin gcc 3.4 binaries from http://www.gnuarm.com/ Run the setup
Re: LPC2138
2005-01-22 by embest1sale1
Yes, You can program the flash of LPC2138 via JTAG port. Embest flash programmer can do this. Look detail at:
Re: complier stuff for LPC2138
2005-01-22 by embest1sale1
Yes, you can use GCC and GDB for developing ARM application. Bus it s very difficult to build the whole tools chain and use with it. Maybe you can look at
Re: Development tools
2005-01-22 by embest1sale1
Maybe Embest tools is a good choose. Embest IDE package includes IDE, integrated GCC, debugger, project manager, flash programming tools and Jtag Emulator. The
Re: [lpc2000] accurate pulse measurements
2005-01-22 by Kerem Or
Assuming you d like to measure the duty cycle of the input signal applied one of the capture pins of T0, try the following: 1) setup input pin as capture input
Re: [lpc2000] accurate pulse measurements
2005-01-22 by Kerem Or
Assuming you d like to measure the duty cycle of the input signal applied one of the capture pins of T0, do the following: 1) setup input pin as capture input
Re: [lpc2000] accurate pulse measurements
2005-01-22 by Robert Adsett
... I just recounted. Silly me, it s twice for each period. I was thinking two falling and two rising edges but that defines two overlapping periods not a
Re: [lpc2000] accurate pulse measurements
2005-01-22 by Robert Adsett
... As I remember there was a discussion of this a while ago. The upshot was it was impossible to read the actual level of a pin set up for input capture. ...
Re: [lpc2000] Re: transmit interrupt kicker
2005-01-22 by Robert Adsett
... Ah, that does allow you to explore specialized solutions. ... I don t think you will find it in an errata. I doubt it s actually considered one. Hmm,
Re: eCos port for the Ashling LPC2106 development board?
2005-01-22 by smt5211
... We can t use FreeRTOS - it doesn t have inbuilt support for a JFFS2 filing system in flash, and a USB stack. eCos supports both of these, and a whole lot
Re: eCos port for the Ashling LPC2106 development board?
2005-01-22 by smt5211
Unfortunately, we can t go down that road - eCos Pro costs 2,500 pounds. We can t quite budget for that at the moment.
What types of batteries used for Real Time Clock?
2005-01-22 by lpc2100_fan
Hi, I have been looking into batteries lately and so far haven t found the right solution, not just for the LPC2138 but in general. 1. For those who connect
accurate pulse measurements
2005-01-21 by chazeltopman
I m trying to capture the width of a pulse using the capture timers on the LPC2106 and getting an accurate reading every time has proven difficult. The pulses