Re: LED & Button connection
2006-05-26 by rtstofer
... Not at all! I wouldn t do that... The question re: shorting the output was VERY specific and implied the knowledge that such a thing was NOT a good idea.
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Re: error for RDI in keil "MISSING DEVICE (R003:SECURITY KEY NOT FOUND)"
2006-05-26 by Sutton Mehaffey
That message is no big deal. You are just running the evaluation version of the software and that s the message you get sometimes. It will go away once you
Re: [lpc2000] LED & Button connection
2006-05-26 by Tom Walsh
... Something that I did not realize from the LED datasheets, until I did a dot matrix display bar, was that LEDs have a max current and a max voltage rating
error for RDI in keil "MISSING DEVICE (R003:SECURITY KEY NOT FOUND)"
2006-05-26 by naderus2000
hi, i configure keil for working with RDI for wiggler jtag but when want to start debug a massege box apear that write: MISSING DEVICE (R003:SECURITY KEY NOT
Re: [lpc2000] Re: LED & Button connection
2006-05-26 by Tom Walsh
... That depends on the driver used, some of those multiplexed dot matrix driver chips have internal current limiters and can withstand a dead short. This is
Re: [lpc2000] Re: Global arrays
2006-05-26 by Tom Walsh
... sigh, my ESP powers seem to diminish with age. I could have sworn that was the vendor he was using. :( TomW ... -- Tom Walsh - WN3L - Embedded Systems
Re: LED & Button connection
2006-05-26 by rtstofer
... Leon is correct! For a short period of time... According to the LPC2141_42_44_46_48 Datasheet, Iohs (HIGH-state short-circuit current is -45 mA and note 8
Re: [lpc2000] LED & Button connection
2006-05-26 by newmanrf@originarea.com
Hummel, These guys are pulling your leg. That means they are teasing you for not knowing any better. It is not eloquent to connect a led to a i/o pin without a
Re: [lpc2000] Re: LED & Button connection
2006-05-26 by Leon Heller
... From: Gus To: Sent: Friday, May 26, 2006 5:58 PM Subject: [lpc2000] Re: LED & Button connection I
Re: LED & Button connection
2006-05-26 by Gus
I don t know what Leon is trying to do here but no you can t do that. If you know electronics well you will know why but if you are hobbyist then just follow
lpcusb and mcb2140
2006-05-26 by Erick Damasceno
Has anyone succed porting lpcusb for keil mcb2140?? I tried many things but doesn t work. If anyone have succed, please, send me the code or tell me what i
Re: LED & Button connection
2006-05-26 by c.barbaro
... Are you an enemy of resistors? Nevertheless they aren t big or costly components...
Re: LPC2214, Wiggler and arm-elf-insigh
2006-05-26 by stefb16
Just an idea: Are there bad characters in the path name e.g. a blank and GDB has problems to locate the binary file and/or the sources?
Re: Programming external flash
2006-05-26 by stefb16
... You can write a flasher tool in ARM code running in RAM section of LPC2210. The tool gets data from JTAG/UART/... and puts this data in flash. Look in the
Re: [lpc2000] LED & Button connection
2006-05-26 by Leon Heller
... From: Èâàí Êîí÷àëîâñêèé To: Sent: Friday, May 26, 2006 4:14 PM Subject: [lpc2000] LED &
LED & Button connection
2006-05-26 by Иван Кончаловский
Hello All. I have two questions for you: 1. Is it possible to connect LED (super bright 1mA) to port pin without additional current limiting resistor? 2. Is it
JTAG issues again
2006-05-26 by Sutton Mehaffey
Anyone out there running the combo of Keil s compiler and JTAG with Embedded Artists 2148 board and prototype board? I have been using Philips Flash Utility
Handling interrupts on RAM (debug) version
2006-05-26 by stefano_m_a
Hi group, i m studying ARM stuff on Olimex LPC-E2294 and, in particular, i m testing interrupts. My problem is the following: if i compile for RAM_RUN
Re: Global arrays
2006-05-26 by brendanmurphy37
It s unlikely to be a compiler problem with optimisation: I believe the ARM compiler to be very reliable in terms of producing correct code. You don t say
RE: [lpc2000] Re: Global arrays
2006-05-26 by vineet jain
Hello again, I am using the armcc compiler from ARM itself. Also I already tried the static option. Doesn t quite work. Thanks for that. Difficult to
RE: [lpc2000] Re: Global arrays
2006-05-26 by balaji cr
Make it a static variable in a function and see if the compiler treats it nicely. Balaji ... Dream is just a dream. A goal is a dream with a plan and a
RE: [lpc2000] Re: Global arrays
2006-05-26 by Eric Rullens
Vineet, ... It would help if you told what compiler (+version, platform etc.) you are using. Also you might want to look at the code generated by your compiler
Re: Global arrays
2006-05-26 by brendanmurphy37
First off, it s not clear whether the problem is global/local or -O3/- O0, as you seem to say that changing two things broke the code. I d recommend: 1. Get
Re: [lpc2000] Re: Global arrays
2006-05-26 by Bertrik Sikken
Is -O2 not enough? Perhaps you can see what is happening by checking the generated assembly between the -O0 and -O3? Regards, Bertrik
RE: [lpc2000] Re: Global arrays
2006-05-26 by vineet jain
Guys, I need to use that option for speed. Can t get away with that. Any other pointers? Regards, Vineet. ... Yeah, the same goes for the bzzztbzzzt ARM
RE: [lpc2000] Re: Global arrays
2006-05-26 by Eric Rullens
... Yeah, the same goes for the bzzztbzzzt ARM compiler v2.01c.... Eric
Re: Global arrays
2006-05-26 by brendanmurphy37
... boingboing?
Re: [lpc2000] Global arrays
2006-05-26 by Tom Walsh
... The boingboing ARM compiler version 198 is broken, don t use -O3 TomW -- Tom Walsh - WN3L - Embedded Systems Consultant http://openhardware.net,
Global arrays
2006-05-26 by vineet jain
Hello group, My application fails to give the correct output when I define a global array of size 1024 int type. When I make it local to a function it gives
Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-26 by brendanmurphy37
Richard, Can you explain why you think removing const gives the code a better chance ? Regardless of whether the code is running from flash or RAM, if you
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-26 by Robert Adsett
... Hmm, I would have left it in to gain the extra type checking. Always valuable. Robert Freedom has no meaning of itself. There are always restrictions,
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by newmanrf@originarea.com
... Robert, Yes your right. But for now it wont hurt him to remove it as if he is building for flash its there and if he is building for ram its still there.
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by newmanrf@originarea.com
I m assuming you did not change much if anything in Michael Karas s main that’s included with the gLCD files off of 8052.com. So being that’s the case now
Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by wickedmonster2002
Ok. To clear some things up. I m using an LPC2210 on a Phytec board. No internal memory except 16kB of RAM. I am using 2M of external flash and 1M of external
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by Robert Adsett
... Question: Why get rid of const? I would have thought you would still want this in flash. Robert
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by newmanrf@originarea.com
The ARM architecture is, of course, flat with code and data able to be put anywhere therefore you can run code out of your ram as well as your flash and you
Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by rtstofer
... You need to look at the context of things in XDATA to determine whether it is ROM or RAM. All XDATA means to the 8051 is that it is external memory. See
Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by wickedmonster2002
The gLCD from M Karas has storage classes defined as code and xdata . One is ROM and the other is RAM, i believe. How can I replicate this in ARM standards
Re: [lpc2000] Re: Olimex LPC2294H external flash
2006-05-25 by Karl Olsen
... From: stefano_m_a To: Sent: Thursday, May 25, 2006 2:47 PM Subject: [lpc2000] Re: Olimex LPC2294H
Re: Olimex LPC2294H external flash
2006-05-25 by stefano_m_a
Hi, is it possible to save some routines into the external flash (but boot into the internal one..) ? I try to modify my linker script adding an output section
Re: [lpc2000] Re: Timer as counter...
2006-05-25 by Mukund Deshmukh
... The mind set was for C51 ;-) ... Thanks Brendan, Yes this should be OK. Best Regards, Mukund Deshmukh. Beta Computronics Pvt Ltd 10/1, IT Park, Parsodi,
Re: ARM/ Thumb exception
2006-05-25 by ³³«æµ¦³ñÌX
Dear TomW, Currently, I am using Keil 3.12a/ GNU tools(Cygnus) (SARM.DLL ver 1.25 & DARMP.DLL ver1.09) ... Currently, no optimization is selected. Best
Re: Timer as counter...
2006-05-25 by brendanmurphy37
... 1Khz), and ... the 8 bit ... Why not use 32-bit counters? If you use a 5 kHz timer, you can easily count both phase changes, with plenty of safety margin
Re: [lpc2000] Re: Using Hantronix Chip on glass technology LCD Modules
2006-05-25 by Herbert Demmel
If you don t want to have the effort of creating fonts etc, you may use one of the intelligent iLCD panels from www.ilcd.info You can load any Windows font
Re: [lpc2000] Re: Timer as counter...
2006-05-25 by Mukund Deshmukh
... Well, my plan was to use the timer at 0.9 mil sec (max freq being 1Khz), and average out the reading at 100 mil sec, so that I don t over flow the 8 bit
Re: Timer as counter...
2006-05-25 by brendanmurphy37
Mukund, I would imagine the technique I proposed (sampling each channel at a rate higher than the maximum expected frequency) would work well in the setup you
Re: [lpc2000] Re: Timer as counter...
2006-05-25 by Mukund Deshmukh
... I am sorry the message was hurriedly posted. I am using 4 proximity switches with toothed wheel to determine the speed of 4 shafts. The shaft are driven by
Re: [lpc2000] Re: Programming external flash
2006-05-25 by Mac Mahoi
I am using ADS1_2, in a self made test board with LPC2220 with External SST39VF160 (at base address 0x80000000) and external IS61LV25616 (at base address
Re: [lpc2000] ARM/ Thumb exception
2006-05-25 by Tom Walsh
... I think the first question is what compiler are you using, what version, are you using any optimization (compile for speed, optimize for size)? TomW -- Tom
ARM/ Thumb exception
2006-05-25 by ³³«æµ¦³ñÌX
Hi All, Recently, I have encountered a funny issue. Currently, I have enabled support call between ARM & thumb instruction & complie thumb code & enable ARM/