About bit toggling.

Started by b_kostelidis in LPC200013 years ago 3 replies

Hello. I remember some time ago about how the LPC2xxx had a problem of speed in the GPIO. I also remember that some people here were...

Hello. I remember some time ago about how the LPC2xxx had a problem of speed in the GPIO. I also remember that some people here were very unsatisfied about this fact. I searched the board but it is not easy to come to a conclusion. So, what I am asking now is if philips has done anything to improve the problem in the latest models of this micro family, because I also remember seing so...


How do interrupts work?

Started by Guillermo Prandi in LPC200014 years ago 6 replies

Hi! I read every doc I've found and I couldn't get a detailed description of the interrupt mechanism in the LPC2XXX. In particular, I'm...

Hi! I read every doc I've found and I couldn't get a detailed description of the interrupt mechanism in the LPC2XXX. In particular, I'm looking for the following: - What happens to interrupts while they're disabled? Do they get "cached"? I mean, if I'm in the middle of processing a UART0 interrupt and UART1 receives a new character, I'd proba


Forth for CM3

Started by Stephen Pelc in LPC200010 years ago

> Posted by: "k5nwa" > I'm drooling I would love a FORTH compiler for the M3 family, alas > I'm a hobbyist and I can't afford your...

> Posted by: "k5nwa" > I'm drooling I would love a FORTH compiler for the M3 family, alas > I'm a hobbyist and I can't afford your commercial stuff. I love FORTH > for working with new hardware and testing out concepts. The ARM with Cortex-M3 compilers are now available. In a few weeks time, we'll do a Stamp edition for LPC13xx/17xx and LPC2xxx parts. This will be priced at GBP 75,


External memory

Started by "Niren.R" in LPC200011 years ago 4 replies

Is it possible to interface External Ram and Rom to ARM7 family ? if possible in LPC2XXX series which are the address , data and...

Is it possible to interface External Ram and Rom to ARM7 family ? if possible in LPC2XXX series which are the address , data and control lines used for interfacing external Ram and Rom . ------------------------------------


OT: LPC903 ICP spec

Started by Peter Jakacki in LPC200015 years ago 2 replies

This is slightly off topic but since this is a Philips micro and I also use them as a support micro for the LPC2xxx .....

This is slightly off topic but since this is a Philips micro and I also use them as a support micro for the LPC2xxx ..... I just received some samples of the LPC903 the other day and it hit me. Where is the specification for the IC


HBBR Basic for ARM LPC2xxx

Started by bluex_scf in LPC200012 years ago 3 replies

Hi, I found on some posts mention of HBBR Basic for NXP chips. Is this basic a true compiler or is it only a tokenizer (like MBasic on...

Hi, I found on some posts mention of HBBR Basic for NXP chips. Is this basic a true compiler or is it only a tokenizer (like MBasic on PIC) that tokenize basic programs, adds to them an executor and flash all to the chip? wARM regards ;) Victor


Flash Endurance LPC2xxx

Started by winbond2 in LPC200016 years ago

Hi Guys, I think I saw a figure of 10k for the endurance for the Philips ARM flash parts. Where is it in the data sheet or...

Hi Guys, I think I saw a figure of 10k for the endurance for the Philips ARM flash parts. Where is it in the data sheet or User manuals for the 2119,2129? I couldn't see it anywhere.... am I blind? Thanks in advance. Joe


Re: Anyone want to help start an open-source LPC2xxx hardware library for GCC?

Started by Laurie Gellatly in LPC200012 years ago

Hi Robert, Maybe Ii'm a bit off track, but what about using some of the heahers from eCos? They seem to cater for the variations in hardware...

Hi Robert, Maybe Ii'm a bit off track, but what about using some of the heahers from eCos? They seem to cater for the variations in hardware between processors in a reasonable fashion. Might save you re-inventing the wheel. Cheers ...Laurie:{) -----Original Message----- From: "Robert Adsett" Sent: 7/19/07 12:23:54 PM To: "l...@yahoogroups.co


Re: Free LPC2xxx RTOS for non-commercial use

Started by duci750 in LPC200011 years ago

Dear Anders, Is this RTOS still available for download? Best Regards, Peter Huszar Hungary --- In l...@yahoogroups.com,...

Dear Anders, Is this RTOS still available for download? Best Regards, Peter Huszar Hungary --- In l...@yahoogroups.com, "kristianstad2001" wrote: > > Hello all, > I've followed this group basically from the beginning and I've > notices that a recurring question/subject is real-time operating > systems. > eCos is of course an interesting alternative, but as some of y


LPC2xxx MAM.2 bug - specific cause?

Started by Fred Quimby in LPC20008 years ago

Hello, I know this is an old issue but we still have a bunch of parts with this bug, and it has been cropping up recently since we've been...

Hello, I know this is an old issue but we still have a bunch of parts with this bug, and it has been cropping up recently since we've been running code from flash instead of just SRAM. The errata sheets just say "The conditions under which the problem can occur is dependent on the code itself along with its positioning within the Flash memory," which is somewhat of an insult to our intellige...


Philips Apps

Started by jamesasteres in LPC200015 years ago 2 replies

Hi all, At the risk of starting a thread contrary to why I am posting, I would like to say that the Philips apps support on...

Hi all, At the risk of starting a thread contrary to why I am posting, I would like to say that the Philips apps support on this list is greatly appreciated. It is true that the LPC2xxx has some warts (and this list has been invaluable in documenting them) but really,


Memory usage when migrating from 8 to 32 bit platform

Started by Rudy Van Raemdonck in LPC200014 years ago 3 replies

Hello, I have been using 8-bit AVR MCU's so far (ATMega8) for relatively small projects. Right now I need to convert a PC...

Hello, I have been using 8-bit AVR MCU's so far (ATMega8) for relatively small projects. Right now I need to convert a PC application running under DOS to an embedded platform. The LPC2xxx series is one of the possible targets I will be using. I would prefer a single chip solution without external memory interface.


Do you need an RTOS in your LPC2xxx system?

Started by "Pont, Michael J." in LPC200012 years ago 1 reply

In an earlier e-mail, I raised some questions about the general need for an RTOS in an embedded system (and argued that - for many designs - use...

In an earlier e-mail, I raised some questions about the general need for an RTOS in an embedded system (and argued that - for many designs - use of co-operative multi-tasking may *sometimes* be a better starting point). It was suggested that this wasn't an appropriate subject for debate on this list. Personally, I think this debate is important (not least because many people on this ...


PWM on LPC24xx

Started by Herbert Demmel in LPC200011 years ago 3 replies

Hi, I seem to have problems to understand the PWM (although it's not the first time I've set one up for the LPC2xxx family). I run the uC...

Hi, I seem to have problems to understand the PWM (although it's not the first time I've set one up for the LPC2xxx family). I run the uC with 72MHz and have set the PCLK for PWM0 to divide by 8. So I would expect to get a 300 Hz signal (with a duty cycle of 50%) out of P3.16, but in fact I get 290 (???) Hz, I don't understand why. In the specific case it's not a problem not to have ...


Makefile

Started by rtos2010 in LPC200010 years ago 1 reply

I'm looking for a good book or online resource that explains GNU GCC makefiles for the LPC2xxx series. Something that you may have used to learn...

I'm looking for a good book or online resource that explains GNU GCC makefiles for the LPC2xxx series. Something that you may have used to learn makefiles not just a Google search result (I already did that). My dilemma is that I see many example code for WinARM, YAGARTS, CodeSourcery and the make files never seem to work unilaterally between then even though they all use GNU GCC. Thanks. ...


5V tolerant i/o pins

Started by onceinfour in LPC200016 years ago 7 replies

I want to connect the LPC2114 (or other LPC2xxx) to 5V solenoid drivers (eg. UDN2981's). Can I pull up the outputs of the LPC to 5V...

I want to connect the LPC2114 (or other LPC2xxx) to 5V solenoid drivers (eg. UDN2981's). Can I pull up the outputs of the LPC to 5V with say 10K, to satisfy the input reqmts of the driver? And secondly, I cant find a list anywhere in the datasheets of the LPC pins which are 5V tol


Re: Cortex M3

Started by Mike Harrison in LPC200012 years ago 1 reply

On Fri, 07 Dec 2007 20:23:42 -0000, you wrote: > Hallo, > > Have you tested calculating speed? > Are the STM32 parts as fast as the...

On Fri, 07 Dec 2007 20:23:42 -0000, you wrote: > Hallo, > > Have you tested calculating speed? > Are the STM32 parts as fast as the ST-people claim? They should be a=20 > bit faster then a lpc2xxx at the same clock. > > I don't doubt the core, but I'm not sure about the Flash-Memory=20 > Interface. The flash interface has something that looks similar to the MAM - not sure = of the exact de


LPC2XXX Peripherals

Started by waldstadt2004 in LPC200013 years ago 1 reply

Hello, Does anybody know if the peripherals within a family of LPC2000 chips are register compatible? With "family" I mean LPC2100/LPC2200...

Hello, Does anybody know if the peripherals within a family of LPC2000 chips are register compatible? With "family" I mean LPC2100/LPC2200 and LPC2300/LPC2400. I would like to start to write drivers for the peripherals on the LPC2368, since the LPC2478 is not yet available. Especially, I am interested in the Interrupt controller, DMA controller and the timers. There is not yet a ...


Useful regulator

Started by Brian C. Lane in LPC200016 years ago

I just came across this, it looks like it will make a good regulator for LPC2xxx projects: LP2966IMM-1833 Its a dual...

I just came across this, it looks like it will make a good regulator for LPC2xxx projects: LP2966IMM-1833 Its a dual voltage 3.3v & 1.8v low dropout regulator with 135mV dropout voltage. Brian -- -----------------------------------


Banchmarking different ARMs

Started by tsvetanusunov in LPC200015 years ago 15 replies

Hello All, For a while I'm thinking to make a benchmark code which to run on all boards with ARMs we already have: Philips...

Hello All, For a while I'm thinking to make a benchmark code which to run on all boards with ARMs we already have: Philips LPC2xxx, OKI ML67Q5xxx, TI TMS470, ST STR711&STR712, Analog devices ADuC7xxx, Cirrus EP9301, Atmel SAM7S. Although the core is same, a