HI EmbeddedRelated members I have a subject about LPC2212 ARM7 micro-controller that i want that one could help me on it. I have a board...

HI EmbeddedRelated members I have a subject about LPC2212 ARM7 micro-controller that i want that one could help me on it. I have a board containing an LPC2212+S29AL016D-M02 Spansion Flash. I'm programming it by a LPT port wiggler interface (bought from H-Jtag), I used H-Flasher utility existant in H-Jtag 1.0 freeware obtained from H-JTAG. OS is Windows XP. After well writing the script .hf...

hello, i am evaluating various rtos for on of our products based on arm7. i have been looking at Nucleus, embOS, Rtxc, Threadx and MicroC...

hello, i am evaluating various rtos for on of our products based on arm7. i have been looking at Nucleus, embOS, Rtxc, Threadx and MicroC os-ii. Of the lot Threadx and embOS seem to be good. Although i believe that the others are just as good. It seems hard to zero in one choice. I have been searching for reviews in the newsgroups. I have found some scattered info for nucleus and threadx (...

Hi, I am currently taking an embedded systems design class, where we are building a computer using an ARM7 microcontroller. The class used to...

Hi, I am currently taking an embedded systems design class, where we are building a computer using an ARM7 microcontroller. The class used to be based on the 8086 processor, which could easily be mounted on a breadboard for prototyping. After switching to the ARM, it was more difficult to do the prototyping since the AT91M42800A only comes in a 144 pin surface mount package. A special PCB ...

Hello. I developing embedded system based on ARM7 core and i want to transfer lots of data(about 128 MB)from system to PC via RF link. ...

Hello. I developing embedded system based on ARM7 core and i want to transfer lots of data(about 128 MB)from system to PC via RF link. Do you know good RF module with min. 500kbps date rate and 10 m distans? I thing about RadioCraft RC2000 module and Bluegiga WT12 module. What do you think about them? Anybody use them? Marian Staw

I'm looking for the lowest power ARM7 MCU out there... one with the best mips/watt ratio. Its hard to compare the benchmarks used by various...

I'm looking for the lowest power ARM7 MCU out there... one with the best mips/watt ratio. Its hard to compare the benchmarks used by various manufacturers since they measure active Idd in various ways, but the process technology (130nm, 90nm etc) is almost never specified. I've been looking at the LPC2101 which I believe is built with a 90nm process, but Ive heard there are intel parts that...

Dear All, I'm not sure if what I'm about to propose is achievable, won't work, or just plain wacky. I'm attempting to design an ARM7-based...

Dear All, I'm not sure if what I'm about to propose is achievable, won't work, or just plain wacky. I'm attempting to design an ARM7-based system which has no Flash, on-chip or off. There is a requirement to have NVRAM, i.e. battery-backed. So I'm thinking, can I manage with only the NVRAM? One major concern of mine is how to initially insert the run-time code in the NVRAM in the firs...

Dear all, I am having a problem when I try to read CF card. I am using an ARM7 and the CF card is in Memory Mapping mode with 16-bit data bus...

Dear all, I am having a problem when I try to read CF card. I am using an ARM7 and the CF card is in Memory Mapping mode with 16-bit data bus width. > From the CF specification 4.0, it said that to access the data register in CF card, pull down -CE1 and -CE2, and the 512 bytes can be read out consecutively. But when I tried to do this, every second read is the same as its previous read such

I bought a wiggler probe for ARM7 and was very disappointed when I didn't receive a Flash Programmer Utility with it! Apparently they sell the...

I bought a wiggler probe for ARM7 and was very disappointed when I didn't receive a Flash Programmer Utility with it! Apparently they sell the Flash Programmer SW for 500 extra bucks! I am not eager to pay any additional dollars to this company, so I would like to know if the wiggler can be used with any other Flash Programmer software. Thanks, Erol P.S. I heard that the OCD Comman...

Hi, I am looking to start learning about ARM uc. I have chosen as a developer platform this...

Hi, I am looking to start learning about ARM uc. I have chosen as a developer platform this board. http://embedinfo.com/English/Product/ax4510.asp The board has a flash loader software on CD and also a bootloader (w/o any Monitor, the bootloader is simple). The board has a 20 pin JTAG connector. Also, I would be using gnu tools. 1. Please suggest any JTAG ICE that is cheap and supp...

Hi, I am thinking about putting either eCos or ucOS into the just released Philips ARM7 LPC21xx chip. It has something like 16kB of RAM,...

Hi, I am thinking about putting either eCos or ucOS into the just released Philips ARM7 LPC21xx chip. It has something like 16kB of RAM, 128kB (or 256kB depending on the part) of FLASH on-chip, with no external memory bus. Before going ahead, I would like to have a sanity check: can the porting of eCos or ucOS be done with the resources? It aims to be my hobby project. Just want to try...

Hello, I'm looking for ARM development boards for students laboratory. The board should be based on ARM7 or ARM9 core and has features:...

Hello, I'm looking for ARM development boards for students laboratory. The board should be based on ARM7 or ARM9 core and has features: simple keyboards (4x4 or similar), LCD display, ADC, EIA232. It should be working with GNU GDB debugger. Can someone recommend me a board which may be useful for students laboratory? Of course, it should not be expensive. Best regards, -- Bartlomiej ...

Hello All, reading some of the specs I'm still not completely sure about the debugging capabilities of a LPC21xx. Can I access memory "non...

Hello All, reading some of the specs I'm still not completely sure about the debugging capabilities of a LPC21xx. Can I access memory "non intrusive" while the program is executing (like BDM in the 68HC(S)12 or the HCS08?)? Or does a memory read always interrupt program execution for some cycles? If "non intrusive" is possible: is this a standard feature of debuggers? Any genera...

A move from 8051 to ARM7 (with Thumb) is being contemplated. This move would also incorporate a move from asm to C. Has anyone published metrics...

A move from 8051 to ARM7 (with Thumb) is being contemplated. This move would also incorporate a move from asm to C. Has anyone published metrics for code space increases in such a migration? I'm imagining a 40% size increase (wider instructions vs. optimize-friendly architecture) but this is basically a guess. I'd prefer a documented case study rather than simply anecdotes, but I'll take a...

We have a hardware platform with 8 dry contact closures and 8 intput lines, among other things, controlled by an ARM7 uC running a proprietary...

We have a hardware platform with 8 dry contact closures and 8 intput lines, among other things, controlled by an ARM7 uC running a proprietary kernel. We now have an RFP to add PLC functionality to the box, to make this I/O available to the end user. We think we may be able to manage adding sequencing capability to the box, but we don't want to create user tools for building PLC prog...

Hello to you all. Has anybody used successfully the SED1335 device in bus mode with LPC 2294 (the ARM7 from Philips)? I'm using a Phytec...

Hello to you all. Has anybody used successfully the SED1335 device in bus mode with LPC 2294 (the ARM7 from Philips)? I'm using a Phytec development board, which uses the A2 address bus as the lowest bit for the addresses. The register BCFG3 seem to correctly set: BCFG3 --> 0x0000FBEF bit memory access, RBLE = 0, IDCY=15, WST1=31, WST2=31. I have also set PINSEL2 to 0x0E6149E4,

Our team is working on the early stages of development of a class 2 medical device using a low-end ARM7 controller. Our plan is to do much...

Our team is working on the early stages of development of a class 2 medical device using a low-end ARM7 controller. Our plan is to do much of the preliminary development using FreeRTOS and then migrate to SafeRTOS after we have proved feasibility, on the theory that SafeRTOS will be easier to get past the FDA. Today, I got a brief look at what SafeRTOS costs ... something on the order ...

Is there someone who has access to the CRC_CCITT 16-bit code written in ARM7 assembly language? I'm well aware that there's a ton of code in C...

Is there someone who has access to the CRC_CCITT 16-bit code written in ARM7 assembly language? I'm well aware that there's a ton of code in C for the same. What's funny is i can do the CRC calculation by hand and have also developed the algorithm but i'm unable to get the code up and running. I'd be happy to share the code that i wrote. If you can help me kindly send me an e-mail at vywa...

I found my J-Link lying around and tried again to get IAR to play nice with an NXP ARM7, and I'm heading to the conclusion that this toolchain...

I found my J-Link lying around and tried again to get IAR to play nice with an NXP ARM7, and I'm heading to the conclusion that this toolchain simply doesn't work with NXP. Here's what happens - it's really weird, so maybe someone can explain: - Create an empty C main project (main just returns 0) - Select the correct chip as target - Select J-Link as the debugger - Uncheck the "run to ma...

I have 16x4 HD44780 base LCD module. 2 days ago I wrote the code and it worked but I wasn't pleased with it so i deleted it and started writing...

I have 16x4 HD44780 base LCD module. 2 days ago I wrote the code and it worked but I wasn't pleased with it so i deleted it and started writing new one. And for the lase 2 days it won't work :((( I lost 5-6 hours already on this. I can't even get LCD to initialize and turn cursor and blinking ON. Can you people find something wrong in this init code? MCU is LPC22129 with ARM7 running at ...

Hi, I am using: - NXP LPC2103FBD48 with ARM7 core. - Rowley Associates CrossStudio for ARM v1.7 Build 4. - C++. - Compiling with no...

Hi, I am using: - NXP LPC2103FBD48 with ARM7 core. - Rowley Associates CrossStudio for ARM v1.7 Build 4. - C++. - Compiling with no optimizations. I have a mysterious bug that is causing, once in a while, a prefetch abort exception or a data abort exception. I suspect it is either the chip or the CrossStudio's fault, because commenting out one single line of source code that says "con...