Question about interrupts and the ARM interupt registers.
2004-10-09 by Mark Gross
This may be, perhaps, a bit off topic. I m trying to make sense of the IRQ modle of the ARM core on the lpc2124. My understanding of how this works is based
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Re: PC104
2004-10-09 by Pete
Hi Joe, thanks for the info. The ISA bus should be simple to implement from the LPC peripheral bus i presume. As for the driver interface then it should be ok,
RE: [lpc2000] PC104
2004-10-09 by Joe Hlebasko
The PC104 bus is nothing more than the ISA bus from the desktop PC. If the ARM MCU is the bus master won t be much help as to use any commercial card you still
Re: [lpc2000] Re: Problems w/ UART
2004-10-08 by Robert Adsett
... This may seem obtuse, but first line of C or asm? A good optimizer on the ARM may change the order of execution in non-obvious ways. ... It doesn t matter
Re: Problems w/ UART
2004-10-08 by peterburdine
... The first line of code that should always be executed. ... at the ... You are correct, I was just being stupid. ... If I removed the vectored setup, then
Re: [lpc2000] Re: Problems w/ UART
2004-10-08 by Robert Adsett
... OK, but where in the interrupt? ... No, switch does not work that way. It is an exact match, not a bit mask. And having multiple bits set is not only
Re: Problems w/ UART
2004-10-08 by peterburdine
... do you ... While I was debugging w/ JTAG, I put a breakpoint in the isr, it was never reached. I d turn on an LED if one existed for my dev board. ...
Re: [lpc2000] Re: Problems w/ UART
2004-10-08 by Robert Adsett
First a question, you say the interrupt is not being generated, how do you know? A few comments on the code below, probably more when I get a chance to review
Re: Problems w/ UART
2004-10-08 by peterburdine
It was a small oversite that it wasn t posted. I was copying stuff out that I didn t need. Since then I ve made another small project that just tests the
Re: Problems w/ UART
2004-10-08 by peterburdine
Use __fiq instead of __irq. From Keil help: Fast Interrupt Functions (__fiq) Fast Interrupt Functions can be directly defined using the __fiq function
Re: Problems w/ UART
2004-10-08 by Pete
Hi Peter Interesting to hear this as I too am using Keil, but wasnt aware that you could do this! For my info, how do you tell Keil that you want the interrupt
Re: [lpc2000] Re: Problems w/ UART
2004-10-08 by Robert Adsett
... Speaking of which, I just reviewed your code. You don t appear to be actually calling your uart initialization code anywhere (I don t see how you would
Re: Problems w/ UART
2004-10-08 by peterburdine
Pete, The Keil s compilier does not require such initialization. I have a timer isr that works just fine being declared as void timer_isr (void); void
Re: [lpc2000] Yet another email with "getting started" questions....
2004-10-08 by Robert Adsett
At 06:40 AM 10/8/04 -0700, you wrote: ... Both of the serial ISP programs I know about (Philips gui and Martins command line) calculate and insert the
Yet another email with "getting started" questions....
2004-10-08 by Mark Gross
I recently purchased an Olimex lpc-p2124 development boardfrom sparkfun.com along with a p-port JTAG dongle. I have some questions, one about JTAG use with
Re: [lpc2000] Re: Does code read protection exist on the LPC2106 ?
2004-10-08 by Sébastien MARION (UMM)
It s just for complete the list of LPC who have nt code read protection. I find this groups very usefull, and interresting, thank for all. Sebastien (always in
PC104
2004-10-08 by bty639886
Has anyone implemented a PC104 bus from the LPC2192/4 series of processors? Any information would be really useful as I am not familiar with the pc104 spec
Re: [lpc2000] Re: Does code read protection exist on the LPC2106 ?
2004-10-08 by Robert Adsett
... With no internal flash there is nothing to protect. The point is moot. Protecting external flash would require some sort of encrypted bus. Robert
Re: RTC manipulation (ctd.)
2004-10-08 by Leighton Rowe
Yep, PLLSTAT says that the PLL s enabled, connected & locked. I m running the code on a mcb2100 as well (12MHz crystal). I made a mistake about the processor
Re: Hitex Tools for LPC2xxx ?
2004-10-08 by ksrabit2000
Hi Bobi, I started with a startekit from hitex and now I work with the full Tanto system with ETM support. When I started there were some stability problems
Hitex Tools for LPC2xxx ?
2004-10-08 by bobi catorski
Hi all Any one using the hitex tool s for the LPC2xxx ? I would like to know your impression from the tool Regards Bobi ... Do you Yahoo!? vote.yahoo.com -
Re: [lpc2000] Re: Does code read protection exist on the LPC2106 ?
2004-10-08 by Sébastien MARION (UMM)
Just for information LPC2210 too ? (no flash integrated ...) ... From: Robert Adsett To: lpc2000@yahoogroups.com Sent: Thursday, October 07, 2004 8:28 PM
Re: Does eCos work on the LPC2104 ?
2004-10-08 by balazs_scherer
... of ... Hello, You will be able to work with eCos on LPC2104, but it is far from an ideal sollution. You have to make restictions for thread stack sizes,
Re: Problems w/ UART
2004-10-07 by Pete
peter i think also that you need to initialise the isr function differently... something like this: void uart0_isr(void) __attribute__ ((interrupt( IRQ )));
Re: RTC manipulation (ctd.)
2004-10-07 by Pete
Hi Leighton, Im using the MCB2100 development board from Keil for the time being. Our main control unit is in development as we speak... anyway, the MCB is
Re: RTC manipulation (ctd.)
2004-10-07 by Leighton Rowe
Thanks for your results What lpc are you using by the way? Is your RTC counting at the right speed when VPBDIV=0? Try comparing the RTC timers against a normal
Re: Does code read protection exist on the LPC2106 ?
2004-10-07 by funes_armando
... have ... Hi Shane, As Robert said the LPC210X family does not support code read protection (great mistake from Philips). If you are working in a cost
Re: [lpc2000] Re: Does code read protection exist on the LPC2106 ?
2004-10-07 by Robert Adsett
... Ashling s answer is incomplete. From the Flash security thread just a little while ago. Hello Armando, Richard is right, The LPC2104 / 2105 and
Re: [lpc2000] LPC2106 - Newbie
2004-10-07 by Robert Adsett
... Actually, there is a fair amount of free software around. Some in the files section of this forum. I have some newlib support routines here (
Re: Problems w/ UART
2004-10-07 by peterburdine
I am sure the might help, if the ISR was called in the first place. But it isn t. Also, according to the user manual I have,, it states that only U0IIR must be
Re: [lpc2000] Re: Problems w/ UART
2004-10-07 by Robert Adsett
... Actually, just reading IIR does that for the UART. But as you point out you still need the write to VICVectAddr. Robert Freedom has no meaning of
Re: Problems w/ UART
2004-10-07 by Pete
In an interrupt service routine: in order to exit it properly you must, Clear the interrupt flag that triggered it (write a 1 to the flag?) eg: U0IIR =
Re: RTC manipulation (ctd.)
2004-10-07 by Pete
ok, got home and have tried on my dev board... Using a 12Mhz crystal, I configured the VPBDiv=0 As a result modified the Fac and Int settings to: PREINT =
Re: LPC2106 - Newbie
2004-10-07 by Pete
the philips flash utility is for programming via UART0 you need to use a JTAG programmer.... Are you using Keil or similar to do the writing of code? Keil has
Problems w/ UART
2004-10-07 by peterburdine
I think I may be missing something stupid, but can anyone help me? I am tring to write to UART0, but it doesn t seem to work. I am trying to write a software
LPC2106 - Newbie
2004-10-07 by Alex
My problem is propably very stupid. I am student and work with the ATMega32. Now I bought the Olimex LPC2106 Board and a JTAG, and thougt it could be used as
Re: [lpc2104] uart0 doesn't emit 0x00 byte(s) :-O
2004-10-07 by bty639886
im not near anything that can specifically help, but can you check that your PC side is not suppressing the NULL byte? (I know VB has an option in the MSCOMM
LPC Reset..
2004-10-07 by bty639886
Is there any way to reset the processor from within the firmware? I am currently using the Watchdog feature, and I know if I stop toggling the watchdog then my
Re: RTC manipulation (ctd.)
2004-10-07 by bty639886
when i get home i will check this out on my systsem. I do however have a 12Mhz clock rather than the 14.xx that u are using. So my preints and facs will be
Re: RTC manipulation (ctd.)
2004-10-07 by Leighton Rowe
... own; ... ...sorry bout the typos. I m saying that you should end up with the same problem when running the RTC with vpbdiv=0.
Re: RTC manipulation (ctd.)
2004-10-07 by Leighton Rowe
... Good news! After setting VPBDIV = 1 (pclk =cclk) and setting PREINT and PREFRAC (based on the user manual), the RTC counted correctly. Thanks Pete. The RTC
[lpc2104] uart0 doesn't emit 0x00 byte(s) :-O
2004-10-07 by Pawel Sikora
Hi, I don t know what is wrong with uart0 (or my code). testcase: int rs232_txAvailable() { return ((U0LSR & bit(5)) != 0); } 000000a0 : a0:
RE: [lpc2000] Does eCos work on the LPC2104 ?
2004-10-07 by Hugh O'Keeffe
Hi Shane, Check out www.ecoscentric.com. I know that they are working on a range of LPC2000 ports Hugh @ www.ashling.com/support/lpc2000/ ... From: smt5211
Re: [lpc2000] Does code read protection exist on the LPC2106 ?
2004-10-07 by Robert Adsett
... No (I think we may need to start building a FAQ). ... Also no, There was a recent post from philips_apps on this, apparently a re-spin of the silicon would
Re: [lpc2000] Re: LPC2106 timer problem?
2004-10-07 by Robert Adsett
... Not in the timers but I ve seen a similar effect on the serial port (missing interrupts). It behaved as if the transmit interrupt flag was cleared as it
Does eCos work on the LPC2104 ?
2004-10-07 by smt5211
Hi, I know that eCos works on the LPC2106, with 64Kb ram and 128Kb flash. Does eCos work on the LPC2104, given that it only has 16Kb of ram? We would need a
Does code read protection exist on the LPC2106 ?
2004-10-07 by smt5211
Hi, I know that code read protection exists on the LPC2114,2124,2212,2214. Does code read protection exist on the LPC2106. If it doesnt, will the bootloader
Re: VPB maximum speed? No divider needed
2004-10-06 by philips_apps
Hello For the record: The assumptions about VPB divider being there to lower power, prepare for faster core speeds are all correct. Also the statement that
Re: LPC2106 timer problem?
2004-10-06 by vaughan_anztec
... timer0 simultaneously (in the match interrupt mode, while the main timer0 is free running)? ... reloaded at a period rate. The other channels may be
Re: RTC manipulation (ctd.)
2004-10-06 by Leighton Rowe
Hey Pete, ... configuring ... Yes I config ed PLL first, but I skipped the vpbdiv config. I m aware vpbdiv is 0 by default, so I have the uart/timer/rtc