Re: [lpc2000] Corssworks CTL examples
2005-10-18 by Tom Walsh
... Yes, some external interrupt controllers / sources exert a continuous active level until all interrupt sources within them have been cleared. A device
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Re: [lpc2000] flashing an elf-file to internal Flash
2005-10-18 by Alexandre PETIT
Hi, During the reset, you would like to verify the state of pins which give the boot mode : internal flash, external peripherical on CS0 or other. good luck
Re: [lpc2000] Corssworks CTL examples
2005-10-18 by rseku
Thank You very much indeed! Meantime I figured out, that external interrupt trigerring by level keeps triggering as long as the reason is kept.This makes
Confused re: endianness
2005-10-18 by rtstofer
I have a pointer to an unsigned 32 bit value in an array[512] of unsigned chars (actually the partition table of a CF). When I point to the value using GCC,
Re: [lpc2000] Re: Problems with sting constants and gcc -On
2005-10-18 by Tom Walsh
... Well, there is always objdump: arm-elf-objdump -d -S -x -s .o BTW, objdump not only works for object files but it also works quite nicely on
Re: [lpc2000] External watchdog and flash loader
2005-10-18 by Tom Walsh
... This almost sounds like a High-Energy Laser controller... ... Well, all I can say is that I am glad it is you and not me with this problem. In the field
Re: [lpc2000] Re: Problems with sting constants and gcc -On
2005-10-18 by Robert Adsett
... Good point. ... But it will make a difference in this case. Case 1: void myfun( char *); myfun( test ); In this case we have a pointer to a modifiable
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-18 by Landrum Haddix
... Robert, We thought of that today. There are some SOT-23 PICs with 4 I/O that would be cheap and perfect. Downside is they have to be programmed somehow. So
Re: [lpc2000] External watchdog and flash loader
2005-10-18 by Landrum Haddix
TomW, We use a gun and step from a couple of KV to +/-25KV. All of my connector pins pass though these surge devices we use called SurgX that will clamp the
Re: [lpc2000] ARM mode
2005-10-18 by Charles Manning
... Instead of doing a blx, the following will work pretty well: ldr r0,=func_addr (assumes func_addr has 1 set for Thumb funcs) mov lr,pc bx r0 ... That is
Re: Problems with sting constants and gcc -On
2005-10-18 by embeddedjanitor
... They will be in a different area. A constant string will be on the rommable constants area (.rodata in GNU talk). A modifiable string will be in the data
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-18 by Peter Jakacki
I ve been using an external 8-pin micro as a reset/watchdog control for years. Originally I used the PIC12C509 and more recently the 12C629 as they have proved
Re: Problems with sting constants and gcc -On
2005-10-18 by Guillermo Prandi
I too gave a suspicious look at the startup code. But the thing is, in order to copy the modifiable data to RAM it must be in the ROM in the first place! It
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-18 by Robert Adsett
... I think the additional micro as watchdog is not a bad idea. A little 8 pin micro can act as quit a flexible watchdog. 1 pin for reset, 1 as the watchdog
Re: [lpc2000] Problems with sting constants and gcc -On
2005-10-17 by Robert Adsett
... It sounds like a problem with your startup code. ... This string, for instance needs to be copied to RAM since your declaration indicates it s modifiable.
Re: [lpc2000] External watchdog and flash loader
2005-10-17 by Tom Walsh
... I m wondering why you would subject a board s electronics to a static discharge?? When we go through U/L testings, they zap us with an ESD on the inputs
Re: RE : [lpc2000] ARM mode
2005-10-17 by Tom Walsh
... I had been wondering which arch type was for the LPC2xxx family, thank you. So, I would imagine that even if I built an arm9tdmi (armv5t) GCC compiler
Problems with sting constants and gcc -On
2005-10-17 by Guillermo Prandi
Hi! Has anybody found this? I m using gcc 4.01 (latest WinARM) and I m compiling for LPC2138 (ARM7). If I use this kind of stuff, constants don t get to the
RE : [lpc2000] ARM mode
2005-10-17 by Yannick Hildenbrand
Hello, I just would like to add a small remark to this excellent analysis The BLX instruction is available on architectures V5 and above (see the
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-17 by Sten
... The situation of course! This is like building a house without a door. ;-) ... Roberts idea with the JTAG-Enable pin (RTCK) is quite good. If you pull-up
Re: External watchdog and flash loader
2005-10-17 by lp2000c
One thing which will kill your internal Watchdog is writing a large value to the WDTC register. While the WDMOD register is write- protected, this register is
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-17 by Robert Adsett
... What about using the pin that enables JTAG in the same manner as you are planning on using P0.14? That doesn t detect the cable presence but it does
Re: External watchdog and flash loader
2005-10-17 by lhaddix
Sten, What do you mean bad foul!!! my design or this situation? I think I will add circuitry to inhibit the external watchdog when P0.14 is low. I also want
Re: [lpc2000] ARM mode
2005-10-17 by Sten
Hello, entry of interrupts must be compiled in ARM mode. If you return from a function or interrupt by LR (return address in link register) you do not need to
Re: [lpc2000] Re: LPC2148 errata
2005-10-17 by Joel Winarske
... Yes thanks!!
Re: [lpc2000] Re: LPC2148 errata
2005-10-17 by Joel Winarske
... Great I will! Thanks!!
Re: LPC2148 errata
2005-10-17 by philips_apps
Joel, the LPC2148 Errata Sheet is here: http://www.standardics.philips.com/support/techdocs/microcontrollers/ pdf/errata_lpc2148.pdf It is not identical to the
Re: [lpc2000] Corssworks CTL examples
2005-10-17 by Tom Walsh
... If you are experiencing continual execution of your ISR code, then it would probably be that the interrupt is in level rather than edge mode. See
Re: [lpc2000] ARM mode
2005-10-17 by Tom Walsh
... I was just reading something about that up at arm.com. Something about having interrupt handlers written / compiled in thumb. IIRC, the ARM processors
ARM mode
2005-10-17 by wiese_matthias
Hi, we are programming a lpc2294 and have problems with the ARM/THUMB mode. We d like to use the mixed mode (arm & thumb mode) to save time loading the
Re: LPC2148 errata
2005-10-17 by dr_danish_ali
Hi Joel, I found this link only mentions the lpc2148: http://www.standardics.philips.com/support/techdocs/microcontrollers/pdf/ errata_lpc2148.pdf off the
Re: [lpc2000] External watchdog and flash loader
2005-10-17 by Sten
Yes, with a LPC2124 we had some similar problems in a design. ... -- /************************************************ Do you need a tiny and efficient real
Re: [lpc2000] External watchdog and flash loader
2005-10-17 by Marcio Zaquela
Did anyone else experience the same problem (the LPC2138 stops running and the wachdog doesn´t restart it) ? ... From: lhaddix To:
LPC2148 errata
2005-10-17 by Joel Winarske
Can Phillips apps confirm if the errata for the LPC2148 is identical to the LPC2138? This link downloads the errata sheet for the LPC2138:
Re: External watchdog and flash loader
2005-10-17 by bdmlpc
Ok, there is a software solution... ;-) Sten
Re: flashing an elf-file to internal Flash
2005-10-17 by bdmlpc
Hello Klaus, if you have a bootloader flash tool you can check at UART0 if you can connect with that tool after RUN command to your bootloader without
flashing an elf-file to internal Flash
2005-10-17 by Klaus
I am downloading an elffile to the internal Flash. I write the sections with IAP. So far everything works. But after reset, the program doesnt start. I set the
Re: [lpc2000] Re: External watchdog and flash loader
2005-10-17 by Bill Knight
IIRC some external watchdog timer chips force a reset on timeout only if their input pin is held high or low for too long a period. If the pin is left
Re: External watchdog and flash loader
2005-10-17 by bdmlpc
Hello, bad foul!!! I think there is no software solution (except hacking the philips bootloader). You could insert a single gate (NAND) into the /reset signal
External watchdog and flash loader
2005-10-17 by lhaddix
Hi, I m working on an LPC2138 design and just moved into ESD testing. After some ESD hits there was no damage, but the processor would be left not running.
Corssworks CTL examples
2005-10-17 by rseku
I am testing simplest ever Crossworks CTL examples for builtin multi tasking. When I went through test 2 for Olimex(LPC2138), I found that button ISR once
Re: [lpc2000] Re: Newbie problem : Connecting LPC2214 to Segger J-Link
2005-10-17 by Michael Johnson
Hi, You ll need to copy the latest JlinkARM.dll (the one that matches your firmware) from the Segger distribution into the CrossWorks bin directory. For the
Re: Newbie problem : Connecting LPC2214 to Segger J-Link
2005-10-17 by mhoneywill
Sorry, can t help you just confirm your problem. I have tried the same with the Segger J-Link (IAR rebadged) and the IAR (Olimex) LPC2148 eval board. I get
Re: [lpc2000] Lookup table in GAS!!!!
2005-10-17 by Sten
Hello Vineet, documentation can be found under: http://www.gnu.org/software/binutils/manual/gas-2.9.1/as.html Why you want to build up such lookup table in
Re: [lpc2000] Lookup table in GAS!!!!
2005-10-17 by Richard Duits
You can use an __attribute__((section( .lookup_table ))) and create a section in your linker script. I used the following linker script for some calibration
Re: [lpc2000] Lookup table in GAS!!!!
2005-10-17 by Michael Anburaj
use .word like this, .word 0x123456678 Cheers, -Mike. ... __________________________________ Yahoo! Mail - PC Magazine Editors Choice 2005
Re: [lpc2000] Using Keil development. env. with GNU-ARM
2005-10-17 by Matthias Hertel
Hi, if you are planning to do commercial development, you will need a Debugger Kit licence for Keil µVision. Otherwise you may use the 16k-limited evaluation
Lookup table in GAS!!!!
2005-10-17 by vineet jain
Hello ppl, I am using the GNU tool under the Keil environment. I wanted to know if there is anyway I could make a lookup table(in code memory, flash) from a
Re: Using Keil development. env. with GNU-ARM
2005-10-17 by kennytrussell
Chapter 6 of the online book at http://www.hitex.co.uk/arm/lpc2000book/ is a tutorial of using Keil with the GNU tools. I personally have not tried the GNU
SPI / SD initialization sequence - my way
2005-10-17 by Peter Jakacki
I ve had a few queries in regards to SD card initialization in SPI mode. For anyone who is interested I have included a dump of the SPI activity during an