Questions tagged [arm9]

ARM9 is an ARM architecture 32-bit RISC CPU family. With this design generation, ARM moved from a von Neumann architecture (Princeton architecture) to a Harvard architecture with separate instruction and data buses (and caches), significantly increasing its potential speed. The ARM9 processors are well suited for applications requiring a mix of DSP and microcontroller performance.

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Can I use ST-LINK (or clone) for programming non-ST ARM{7,9} and Cortex A chips?

Can I program non-ST ARM926 or ARM7TDMI and Cortex-A chips using ST-LINK and ST-LINK clone? I've searched ST's website and I haven't found anything about this. If no, what is the cheapest way to do ...
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why ARM architecture necessarily dominates the IOT market? [closed]

I would like to understand why do we use ARM for routers, cell phones, cameras, refrigerators, smart tv, and everything. instead of using any other architecture like x86. What are the advantages of ...
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Zynq 7020 subcomponent equivalent parts [closed]

The Xiling Zynq 7020 has a dual-core ARM Cortex-A9 and an Artix-7 FPGA in it. What is the equivalent part number of these chips independently? (i.e. what individual part numbers have the same ...
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Can a PCIe bus exist on its own?

Modern SoC solutions (FPGA+ARM) can exist both as a PCIe board, but can also work disconnected (with a 19V PSU). So my question is - is there a solution which provides just a PCIe motherboard/bus, ...
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Estimate RAM usage information of an embedded device [closed]

I'm monitoring the performance of an ARM-based embedded device which runs poky linux distro (from Yocto project) which contains OpenEmbedded build system. I need to get the MHz (CPU cycles) ...
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Operating system on an ARM9 MCU

I have an ARM926EJ MCU (datasheet) that I am learning how to program for a research project. I have been researching, as well as reading a textbook on Professional Embedded ARM Development in order ...
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Uploading C program to the ARM core for execution through ethernet!

I want to write a c code on my local PC and upload it to ARM core on Zed-board for execution. I know we can do it using JTAG, but for obvious reason I want to use Ethernet interface. I will be glad ...
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ARM Cores Benchmark

I am taking some deep interest lately in the ARM architecture and there are many flavors of ARM out there....ARM7, ARM9, ARM11, ARM Cortex-A, ARM Cortex-M and etc. Are there any benchmarks of all the ...
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Periodic timer (64Hz) with ARM processor and (embedded) Linux

I want to call a function 64 times per second with a ARM processor which is running linux. (ex: Rasberry Pi or Freescale i.mx6). Ideally, I don't want too much jitter. I want to perform a task ...
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Purpose of ARM Linker Files

I would like to know what is the purpose of ARM scatter file and ARM Linker address MAP file ? How do they help in compilation and eventually during loading of the executable ?
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How do I setup an SSH to remote into ARM using ethernet port

I am using the Xilinx Zynq 7000, on the TE0720-1 which is mounted on the TE0701-03 carrier board. I was wondering how do I set up an SSH to be able to remote into the ARM processor of the SoC to be ...
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ARM9 vs ARM11 performance? [closed]

This may be a loaded question, but is there a general understanding of the performance increase per clock between ARM9 and ARM11? Say, for a math-heavy function (FFT)? Thanks!
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Why are ARM9 and ARM11 processors still used when the Cortex-A5 is more efficient? [closed]

Many consumer devices that require a low-power processor capable of running for several days to a few weeks on a charge still use ARM9 or ARM11 processors. However, the ARM Cortex-A5 is more powerful ...
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QT Based TouchScreen GUI for ARM9

I want to work in HMI domain and have started learning it. In first stage I want to develop QT GUI based touchscreen application for ARM9 board. Can anyone please suggest how to go for it and any ...
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Sorting of data from instructions ( ARM I-cache and D-cache )

Some ARM cores like the ARM9 family of cores have a Harvard Architecture, at least at the cache level. That is they access two seperate caches, an I-cache for instructions and a D-cache for data ( ...
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ARMCC dependency on ARM processor on the board

Is armcc dependent on the type of ARM processor on the hardware board ? Example: while I compile my code (using a make file) where option CPU=CORTEX-A9 is given , it errors out stating argument ...
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How to connect Ethernet Switch IC with ARM9 CPU

I'm planning to develop an ARM9 based Linux board as an Ethernet wired router device. I selected EP9302 from Cirrus Logic as the ARM9 CPU and RTL8305 from RealTek as the Ethernet Switch/Hub IC. But ...
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Assembling ARM computer [closed]

I want to assemble my own mini-computer with ARM processor, but I don't know the start point I must to start. Can you advice me some articles or other sources where I can read something about that? ...
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Resistive touchscreen with 5-wire connection & Freescale IMX28

I have a IMX28EVK board and I would like to to connect this board to a 5-wire resistive touchscreen. In the Reference Manual of the I.MX28, Freescale said: LRADC2 - 6 can be used for 4/5-wire ...
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NS9750 operating temperatures

I have a ticketing device with an ARM9 CPU, more specifically a NS9750 module. In the datasheet, its operating grades/ambient temperatures are listed as follows: 125 MHz: 0 to 70ºC 162 MHz: -40 to +...
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(Updated) Strange reset behavior with ARM9 processor

I'm working on debugging a boot problem with an Atmel AT91SAM9G20 board. Everything goes great for the first 700 ms or so. It seems that about 700 ms after reset, the processor freezes. What's curious ...