Re: [lpc2000] Interrupt function declaration
2006-05-12 by Andy
I am investigating exactly that point (academic project), seeing how acurate a shared clock network I can produce over ethernet. I have created a custom
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RE: [lpc2000] GCC, uCOS-II, nested interrupts
2006-05-12 by Andrew Berney
Cardiff University has a nice C write up for use with Unix at http://www.cs.cf.ac.uk/Dave/C/CE.html that may help - although its not directly aimed at GCC etc.
RE: [lpc2000] Interrupt function declaration
2006-05-12 by Andrew Berney
Without a slightly more detailed description of what you re trying to acheive via time synchronisation it s hard to give any advice, however I ve done quite a
why these codes can't work?
2006-05-12 by armnewbie
I want to get a 1000HZ PWM. @15MHz VPB Clock codes like this void ini_pwm() { PINSEL0 =0x02
Re: [lpc2000] GCC, uCOS-II, nested interrupts
2006-05-12 by Mukund Deshmukh
... Excellent Document !! I am not a C expert but use C for Embedded Application. Although I am using ld, make and asm file for LPC, but never understood
Re: [lpc2000] Interrupt function declaration
2006-05-12 by Robert Adsett
... Do you need to have your message sent as close to 1mS as possible? If so I m surprised that ethernet uncertainties don t swamp any jitter from the
Re: [lpc2000] Re: LPC2200 Application Note on SPI (AN10369)
2006-05-12 by jk jlkj
Hey Karim are u into weighing scales by any chance. wickedmonster2002 wrote: Thanks guys for all the variable answers. I am pro in
Re: IAP Blocking for 400ms?
2006-05-12 by brendanmurphy37
... To clarify: the quote used above comes from the LPC213x User Manual, under the Features list (section 1.2). It s also in plenty of other Philips
Re: IAP Blocking for 400ms?
2006-05-12 by EmbeddedHub
Same here. I partition the lpc internal flash into different groups based on its sector numbers. I then store different non-volatile variables (product serial
Re: [lpc2000] Re: IAP Blocking for 400ms?
2006-05-12 by sig5534@hotmail.com
Do you work for the government? I m just curious because anyone that has so much free time on their hands that they can keep arguing over menucia must work
Re: IAP Blocking for 400ms?
2006-05-12 by jayasooriah
... You missed my point as to what I was referring to as rubbish . It is very clear from the EE demo example, and the statements made by Philips that it is
Re: IAP Blocking for 400ms?
2006-05-12 by jayasooriah
... They do not. Note the IAP function is not a system or kernel call that typically makes minimal assumptions about the caller s environments. It is just a
Re: IAP Blocking for 400ms?
2006-05-11 by lpc2100_fan
... Well, as there are different requirements for non-volatile data memory these examples can be very usefull or if it does not work for your needs (btw. what
Re: LPC2200 Application Note on SPI (AN10369)
2006-05-11 by wickedmonster2002
Thanks guys for all the variable answers. I am pro in Assembly programming. I m just getting into C. I was used to C++ before, but that was before I got into
Re: LPC2200 Application Note on SPI (AN10369)
2006-05-11 by brendanmurphy37
... As others have pointed out discovering **what** it means is very simple: it s just standard C . What s less obvious is **why** this construct is used. I
Re: [lpc2000] Re: IAP Blocking for 400ms?
2006-05-11 by Bryce Schober
... Wouldn t the IAP functions have to be doing that anyway? -- Bryce Schober
Re: [lpc2000] LPC2200 Application Note on SPI (AN10369)
2006-05-11 by Tom Walsh
... What is 2 raised to the 7th power? This is a C statement to shift a value of 1 left by 7 bit positions. Simply write a binary 1 followed by 7 0 s.
RE: [lpc2000] LPC2200 Application Note on SPI (AN10369)
2006-05-11 by Andrew Berney
It creates a pre-processor definition (#define) such that where ever SPIF is used in the code it compiles it as though it was: (1
Re: [lpc2000] LPC2200 Application Note on SPI (AN10369)
2006-05-11 by Marko Pavlin (home)
... 1
LPC2200 Application Note on SPI (AN10369)
2006-05-11 by wickedmonster2002
I am confused. What does #define SPIF (1
Re: IAP Blocking for 400ms?
2006-05-11 by jayasooriah
... The two version EE demo that Philips published must be rubbish then.
Re: [lpc2000] ADC Problem
2006-05-11 by 3gpabko
Hi, you are trying to configure channel and start ADC at the same time. I don t know which LPC2xxx you are using but you should check the corresponding errata
Re: [lpc2000] Re: GCC, uCOS-II, nested interrupts
2006-05-11 by Andy
I ve just started reading and getting to grips with a few of the concepts. Thanks David a great help. Andy ... From: brendanmurphy37
Re: [lpc2000] Interrupt function declaration
2006-05-11 by Andy
Robert, I am running a shared clock network over ethernet, so to reduce task jitter on the slave nodes the timer0 interrupt needs to be as close as possible.
Re: IAP Blocking for 400ms?
2006-05-11 by brendanmurphy37
To be fair to Philips, they generally describe the on-board flash as program memory , and it s clear that this is very much its intended purpose. It is kind
Re: unnecessary external interrupt ( INT1 )
2006-05-11 by brendanmurphy37
Hi, I posted a message regarding this some time ago: http://groups.yahoo.com/group/lpc2000/message/11212 There are several possible work-arounds: 1. disable
Re: GCC, uCOS-II, nested interrupts
2006-05-11 by brendanmurphy37
I ll second that. Very highly recommended to anyone using these parts: clear, simple document with easy-to-understand text and good examples. Just the kind of
Re: Interrupt in LPC22XX
2006-05-11 by Tom OE6TKT
... You don t need to OR this register with itself, just write: VICIntEnable = 0x00000080; (to clear this interrupt use VICIntEnClear = 0x00000080;) Thomas
unnecessary external interrupt ( INT1 )
2006-05-11 by topandurangs
Hi all, In my application I am using INT1 as -ve edge trigger interrupt ( PINSEL0_bit.P0_3 = 0x3).I also need to check the status of the same pin by
ADC Problem
2006-05-11 by heedaf
I ve got the following code to start the ADC. If I put in a breakpoint somewhere after the code and run to the breakpoint it will enter an endless loop. If I
Re: GCC, uCOS-II, nested interrupts
2006-05-11 by roger_lynx
Dave, kudos for the AR1803.pdf! Very nicely done. Roger
Re: [lpc2000] GCC, uCOS-II, nested interrupts
2006-05-11 by David Hawkins
... http://www.ovro.caltech.edu/~dwh/ucos/ http://www.ovro.caltech.edu/~dwh/ucos/project_AR1803.pdf http://www.ovro.caltech.edu/~dwh/ucos/gcc_and_ucosii.zip
Re: in production and no chips available !!!
2006-05-11 by mbonds2006
Thanks, Philips_marketing_usa. Our purchasing guy just told me we received a partial shipment (80%) of our LPC2138 order on time. It s not as bad as I thought.
Re: Interrupt in LPC22XX
2006-05-11 by poland459
Hi Zdravko Dimitrov, Thank you very much for your valid suggestion. At last its working..really Its 2 weeks struggle..I thought I have initialised MEMMAP = 1
Re: IAP Blocking for 400ms?
2006-05-11 by jayasooriah
... Hmm... where were you when I was trying to explain to this forum why the EEPROM example from Philips was well ... not a good idea :)
Re: IAP Blocking for 400ms?
2006-05-11 by jayasooriah
... You theoretically can provided you can stop watchdog from firing.
Re: [lpc2000] Re: Interrupt function declaration
2006-05-11 by David Hawkins
... Hiya, I just uploaded the project that that code was extracted from into the files section; gcc_and_ucosii.zip. The interrupt and nesting stuff is
GCC, uCOS-II, nested interrupts
2006-05-11 by David Hawkins
Hi all, I just uploaded a project I tinkered on last year for the Philips ARM 2005 contest held by Circuit Cellar. It has a PDF document inside describing the
New file uploaded to lpc2000
2006-05-11 by lpc2000@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the lpc2000 group. File :
Re: [lpc2000] IAP Blocking for 400ms?
2006-05-10 by Peter Jakacki
... I have used program flash on other micros for data eeprom before but I really don t like doing it as I increase the risk that the program could become
Re: [lpc2000] Interrupt function declaration
2006-05-10 by Tom Walsh
... Well, in that case, you want to run nested interrupts. I don t use that mode, perhaps some others can comment on implementing nesting? From what I
Re: [lpc2000] Interrupt function declaration
2006-05-10 by Robert Adsett
... Just a question that might help. Why is the timer interrupt that critical? Have you something scheduled that must happen at 1 ms intervals? If so how
Re: Interrupt in LPC22XX
2006-05-10 by ghetto_shinobi
Ive taken look into ur code and since u are using Keils IDE its pointless to call this function void Initialize(void); This piece of code is embedded into
Re: [lpc2000] Interrupt in LPC22XX
2006-05-10 by 3gpabko
Here are some points to mention: 1. As I see you are running from FLASH. Correct? If yes you need to set MEMMAP = 1, at initialization. 2. In this case ensure
Re: Interrupt function declaration
2006-05-10 by ghetto_shinobi
HI! Hi Andy i got couple off topic question.Hope u can help me out. I see that u are using one of those hardware Tcp stack from Wiznet.Im thinking about
Re: Interrupt function declaration
2006-05-10 by brendanmurphy37
My advice would be to avoid using extensions at all and code an assembler prolog and epilog. See http://groups.yahoo.com/group/lpc2000/message/14623 for an
Re: [lpc2000] Interrupt function declaration
2006-05-10 by Andy
Thanks Tom, I m still quite new to embedded systems generally so please bear with me. I m running a task scheduler based on a 1ms tick using Timer0, so need
Re: IAP Blocking for 400ms?
2006-05-10 by lpc2100
As per my understanding you can continue to service interrupts during the IAP erase. The ISR needs to live in SRAM and must not access flash. Tom ...
Re: [lpc2000] Interrupt function declaration
2006-05-10 by Tom Walsh
... Both IRQ and FIQ should switch register contexts and save certain registers (FIQ stacks nothing). interrupt is more a general save what you use
Interrupt function declaration
2006-05-10 by Andy
Hi all, Just wondering if anyone can clear something up for me. I m using the Vectored Interrupt Controller as decribed below, just wondering what function