Is there a problem on cache setting optimization for ARM with Linux?

Started by Robert Willy in comp.arch.embedded4 years ago

Hi, For an ARM processor with Linux, MMU is an essential part. ARM cache is part of MMU function? Does the cache optimization problem exist...

Hi, For an ARM processor with Linux, MMU is an essential part. ARM cache is part of MMU function? Does the cache optimization problem exist for such a system? I know for a bare metal ARM, the user is responsible for cache setting and optimization. Here my question is about Linux ARM. Thanks,


Its difficult to start firmware

Started by werty in comp.arch.embedded12 years ago 8 replies

No one has made a Buffallo monitor for the ARM . you cant start an ARM , its missing to much essential firmware . Vendors want you to...

No one has made a Buffallo monitor for the ARM . you cant start an ARM , its missing to much essential firmware . Vendors want you to NOT know their h/w so they steer you into a 50 MegaByte i.D.E. , to keep you distracted , and detour you away from learning the essence of the ARM mcu . You must use a helper host PC , which burrys too many bugs, because you dont have han...


Version errors with Crossworks, ARM-7 target

Started by Anonymous in comp.arch.embedded4 years ago 1 reply

I'm just getting started with ARM. I use protoboards that host an LPC2138 ARM-7. My toolchain is Crossworks / J-link, I've set up a project with...

I'm just getting started with ARM. I use protoboards that host an LPC2138 ARM-7. My toolchain is Crossworks / J-link, I've set up a project with a demo test file that's supplied with the protoboard, a trivial LED flasher in C. It's the only file in the project, and as a supplied demo it will be error-free. The build gives the following errors: Source object ARM flash Debug/crt0 has EABI ve...


Anyone using TMS470 (ARM) toolset?

Started by Vladimir Vassilevsky in comp.arch.embedded9 years ago 7 replies

Hello All, I have to use a TMS470 C/C++ compiler (TMS470 == ARM). The toolset wasn't my choice. The more I use it, the more nonsense I...

Hello All, I have to use a TMS470 C/C++ compiler (TMS470 == ARM). The toolset wasn't my choice. The more I use it, the more nonsense I discover and more doubts I have. Also, in theory there is TI DSP BIOS for ARM, but zero documentation. I suspect those tools are kinda unloved by TI, and I am the only one who had ever tried them, and the earlier I switch to something different, ...


ARM-JTAG Pinout

Started by Tim Wescott in comp.arch.embedded7 years ago 2 replies

I have several ARM evaluation boards, and they all have exceedingly similar pinouts on the JTAG port, varying only in how they treat TRST. Is...

I have several ARM evaluation boards, and they all have exceedingly similar pinouts on the JTAG port, varying only in how they treat TRST. Is there a standard out there on what the JTAG port should look like? If so, who maintains it? Is it available on the web? I'm kinda hoping for "yes", "ARM", and "here you go", but I'll take what I can get. -- My liberal friends think I'm a c...


How to build RTOS kernal for ARM processor

Started by saro in comp.arch.embedded11 years ago 2 replies

Hi all, I am begineer to this ARM technology.I am working in ARM926 processor.I select FreeRTOS for my ARM processor.But this is not...

Hi all, I am begineer to this ARM technology.I am working in ARM926 processor.I select FreeRTOS for my ARM processor.But this is not directly support my ARM processor.It is support ARM966 processor.These both are in same ARM9E family.I want to build source codes of the ARM966 for my processor.But i dont know how to build it from ARM966.If anyone having idea regarding about this plz suggest...


High-end AVR vs. low-end ARM?

Started by Bresco in comp.arch.embedded10 years ago 25 replies

In terms of pricing, how do high-end AVR's (Mega-128) compare to low-end ARM processors? The ARM's are much more powerfull and have large RAM...

In terms of pricing, how do high-end AVR's (Mega-128) compare to low-end ARM processors? The ARM's are much more powerfull and have large RAM memories on them. Anyone ever compare them? I heard that ARM's are cheaper than AVR's these days. Is this true?


Underclocking ARM and SRAM

Started by ghazanhaider in comp.arch.embedded13 years ago 14 replies

I have an LPC3180 header board that needs 10MHz+ crystals to run per spec. I plugged in a ~2MHz crystal and it ran, as slow as expected. I've...

I have an LPC3180 header board that needs 10MHz+ crystals to run per spec. I plugged in a ~2MHz crystal and it ran, as slow as expected. I've underclocked PIC parts down to being static, even using a button as a clock. Can this be done with ARM MCUs? Can this be done with ARM MCUs interfaced with SRAM chips?


Re: ARM code size

Started by daniel in comp.arch.embedded13 years ago 4 replies

Hi, I am moving from 8051 to ARM, I have a question related to code size. In 8051, if code size is about 64K bytes, it should be big enough....

Hi, I am moving from 8051 to ARM, I have a question related to code size. In 8051, if code size is about 64K bytes, it should be big enough. However, for ARM(take LPC2214 as example), it has 256k bytes built-in flash, because ARM instruction is 32bits word long, so its actually code size 64K instructions, then my question is 64K instructions code size is enough most ARM project ? Thanks. ...


ARM dev board

Started by Anonymous in comp.arch.embedded13 years ago 7 replies

Hi fellows, I need to learn the ARM MCPU (any core that can help), so I am looking to buy a development board with ARM MCPU with at least the...

Hi fellows, I need to learn the ARM MCPU (any core that can help), so I am looking to buy a development board with ARM MCPU with at least the basic stuffs (LEDs, SW, LCD ect...) do you know where i can buy one? Thanks to any one how at least toke time to read this posting Thomas.


networking problem in samsung 44box chip arm board

Started by arm developer in comp.arch.embedded15 years ago 1 reply

after booting to uclinux... I experiment the following if I used a cross cable connecting a sumsang S3C44BOX chip with a PC ( 98 SE), I can...

after booting to uclinux... I experiment the following if I used a cross cable connecting a sumsang S3C44BOX chip with a PC ( 98 SE), I can ping each other. I can see the web page in the arm. IP address: PC 98 se is 192.168.0.80 while the arm is 192.168.0.100 and router is 192.168.0.1. however if I common straight utp cable in 98 SE going to router and the arm board is connected to r...


Which is the most popular ARM-based microcontroller?

Started by Mayank Kaushik in comp.arch.embedded14 years ago 21 replies

Hi everyone, Ive only worked with the Atmel ARM variants, but im curious about knowing your views on which ARM-based microcontroller is the...

Hi everyone, Ive only worked with the Atmel ARM variants, but im curious about knowing your views on which ARM-based microcontroller is the most popular..Plz enlighten me! Regards Mayank


GDB or Insight across ethernet

Started by ChrisQuayle in comp.arch.embedded12 years ago 21 replies

Am trying to get a environment going to allow development on > 1 networked hosts, perhaps unix, win2k, or even linux, with networked target...

Am trying to get a environment going to allow development on > 1 networked hosts, perhaps unix, win2k, or even linux, with networked target hardware. Am late to the arm party, but am considering several arm variants, as well as coldfire. The arm targets all seem to be jtag, with wiggler interface to parallel port and to get this networked, plan to use a cheap s/hand hp printserver (Paral


Graphics chip for ARM processors?

Started by Widget in comp.arch.embedded13 years ago 15 replies
ARM

Are there any good graphics processors which are compatible with ARM architectures? Or ARM processors with a built-in graphics...

Are there any good graphics processors which are compatible with ARM architectures? Or ARM processors with a built-in graphics core? TIA -- Posted via a free Usenet account from http://www.teranews.com


Recommend a good ARM book ?

Started by Colin MacDougall in comp.arch.embedded14 years ago 2 replies

Hi, Hoping to get in to programming and using the ARM range of cores ( ARM 7 TDMI mainly ) from using PIC and AVR. Anyone recommend a...

Hi, Hoping to get in to programming and using the ARM range of cores ( ARM 7 TDMI mainly ) from using PIC and AVR. Anyone recommend a good book that covers the hardware and software of these chips - both assembly and C. Just a hobbyist interest so nothing too heavy going if possible please. TIA, Colin


raisonance plus Rlink - any issues?

Started by Peter Harrison in comp.arch.embedded11 years ago 3 replies

I am still trying to sort out a set of tools for the STM32 (and possibly other ARM processors). I know there have been several discussions on...

I am still trying to sort out a set of tools for the STM32 (and possibly other ARM processors). I know there have been several discussions on here. I have very little money as I am essentially a hobby user. Raisonance RIDE7 and the ARM toolit provide what appears to be a good IDE and a version of the GNU ARM tools. It is free and unrestricted. So far I quite like it. To program and debu...


ARM about to be sold

Started by Simon Clubley in comp.arch.embedded3 years ago 29 replies
ARM

ARM is about to be sold to a Japanese company: http://www.bbc.co.uk/news/business-36822806 As a Brit, it saddens me to see a British success...

ARM is about to be sold to a Japanese company: http://www.bbc.co.uk/news/business-36822806 As a Brit, it saddens me to see a British success story sold into foreign hands, but my real concern is about what the future might bring several years down the road. Questions currently going through my mind include whether ARM will still be able to perform R&D at their current rate and whether ...


ARM Cortex M3 newbie questions

Started by Boo in comp.arch.embedded7 years ago 26 replies

Hi, I'm working on a project which is currently planned to use an ARM Cortex M3 from ST (device is from the STM32L151xC series). I've never...

Hi, I'm working on a project which is currently planned to use an ARM Cortex M3 from ST (device is from the STM32L151xC series). I've never used the Cortex chips before and my ARM experience is quite limited too, is anyone here prepared to give me the executive precis of the state of the compiler/debugger situation for these chips ? If I'd been asked the same question 10 years ago a...


general questions regarding ARMs

Started by Michael J. Noone in comp.arch.embedded14 years ago 36 replies

Hi - I'm fairly certain I'm going to use an ARM in a project I'm working on. I have a good deal of experience with Atmel AVRs, but I have never...

Hi - I'm fairly certain I'm going to use an ARM in a project I'm working on. I have a good deal of experience with Atmel AVRs, but I have never used an ARM before. So I was wondering if you all could answer a couple basic questions regarding ARMs: 1. programming: My understanding of programming an ARM is that you do it with a JTAG cable. I was looking at this one, specifically: http://olim...


Question about inline asm for ARM

Started by Anonymous in comp.arch.embedded5 years ago 3 replies

Hi, I want to use ARM A8 performance counter. I find a post on line, but I do not understand its grammar. ARM inforcenter does not help much. I...

Hi, I want to use ARM A8 performance counter. I find a post on line, but I do not understand its grammar. ARM inforcenter does not help much. I especially do not understand the '::'. Could you explain it to me? Or point to some links for it. Thanks, ................. Accessing the performance counters isn't difficult, but you have to enable them from kernel-mode. By default the counter...