• Error when using Cortex -M3 DesignStart FPGA-Xilinx edition

    Shiping
    Shiping

    I download the original package, did not change anything and opened it using Vivado 2019.1. I assume this should be working out of the box.

    When I tried to verify it, I see below error messages.  

    Anyone can see what did wrong here?

    Thanks

    ---

    [BD 41-2161…

    • 7 days ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M3 DesignStart FPGA-Xilinx edition package bitstream incompatible on Arty A7-100T

    Shiping
    Shiping

    Hi, there

    I just downloaded  the "Cortex-M3 DesignStart  FPGA-Xilinx edition packag" and tried to load the bitstream up to Arty A7-100T , but got error

    "Incorrect bitstream assigned to device. Bitfile is incompatible for this device"…

    • 9 days ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M3 bare metal start_up example error in clock ticks

    dak.sera
    dak.sera

    Hi,

    the bare metal example code in ARM ds giving me mismatched output on clock ticks. debug output is given here.

    Cortex-M3 bare-metal startup example
    Insertion sort took 1 clock ticks
    Shell sort took 0 clock ticks
    Quick sort took 0 clock ticks
    SysTick interrupt…

    • 2 months ago
    • Processors
    • Cortex-M / M-Profile forum
  • why there are separate registers for interrupt set-enable and clear-enable while can be just one

    Morteza
    Morteza

    I can't understand why there are separate registers like Interrupt Set-Enable and Clear-Enable Registers or Interrupt Set-Pending and Clear-Pending Register in NVIC? these dual registers couldn't be handled in just one? what are the reasons that ARM processors…

    • Answered
    • 4 months ago
    • Processors
    • Cortex-M / M-Profile forum
  • How to Generate Exceptions on Cortex M3?

    aaerciyas
    aaerciyas

    Hi all,

    I am trying to generate exceptions like Bus Fault, Usage Fault on ARM Cortex-M3. My code for enable exceptions:

    void EnableExceptions(void)
    {
    	UINT32 uReg = SCB->SHCSR;
    
        uReg |= 0x00070000;
    
        SCB->SHCSR = uReg;
    
        //Set Configurable…

    • 7 months ago
    • Processors
    • Cortex-M / M-Profile forum
  • Global variable initialisation problem

    Maitland
    Maitland

    Is this a bug?

    //in global scope:

    uint32_t a = 0;

    uint32_t b = 1 

    // in main():

    printf( "%d %d", a, b);

    Output is -1472002 1.

    i.e. variable not initialised if it is explicitly set to zero.

    version  9-2020-q2-update) 9.3.1 20200408., target STM32F103…

    • 8 months ago
    • Processors
    • Cortex-M / M-Profile forum
  • Hard fault in STM32F101RF due to MRC2 Disassembly ??!!

    Vish_
    Vish_

    Hi all,

    I am having a bootloader code wherein I will sending/receiving data via USART . I have configured USART to operate in interrupt mode.

    USART functionality works perfectly fine independently. Verified this with multiple read/write instances.

    When…

    • 10 months ago
    • Processors
    • Cortex-M / M-Profile forum
  • Resetting GIC by SW?

    kabel
    kabel

    Hello,

    we have a board using Armada 3720 SOC, which contains two Cortex-A53s and one Cortex-M3 used as secure-coprocessor. The interrupt controller is GIC-500.

    The M3 has access to all registers that A53 can see. The first A53 has RVBAR at 0xffff0000 where…

    • over 1 year ago
    • Processors
    • Cortex-A / A-Profile forum
  • Cycle accurate Cortex-M3 simulator using obsfucated RTL

    EBB
    EBB

    I stumbled upon this page which brought up some questions:

    https://developer.arm.com/tools-and-software/simulation-models/cycle-models/designstart

    The obsfucated RTL is synthesizable and should be cycle accurate. I don't see any technical reasons why…

    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Problem with frequency on STM32F103C8T6

    TechnoMan
    TechnoMan

    Hello!
    Found a very strange problem with STM32F103C8T6. When executing this program, if you remove the CountDigit () function, then the delay function works correctly, i.e. Delay (1000) makes a delay of about 1 second. But if you execute the CountDigit…

    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Character recognition using NXP LPC1768 (Cortex-M3)

    Tzan_IT
    Tzan_IT

    Hello guys.

    I have a project on handwritten character recognition using a landTiger NXP LPC1768 ARM Cortex M3 board using touchscreen and so on.

    My experience in such kind of projects or programming is limited but I am willing to put the effort to do…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • ARM Cortex-M3 floating point...

    dtvonly dtvonly
    dtvonly dtvonly
    Note: This was originally posted on 9th May 2008 at http://forums.arm.com

    Hi.  Are there any floating point support for the ARM CORTEX-M3?
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Abort some questions of arm interrupt

    josh zhao
    josh zhao
    Note: This was originally posted on 20th June 2008 at http://forums.arm.com

    I try to understand arm interrupt,there are some questions I don't know,
      1.   Why the nested interrupt has to switch out of irq mode to svc mode?  I think  it only pushes…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • ARM9 replacing Cortex M3

    Michael von Hauff
    Michael von Hauff
    • Answered
    • over 7 years ago
    • Processors
    • Classic processors forum
  • Cortex M3 compilers and benchmarks

    Andrey Madan
    Andrey Madan
    Note: This was originally posted on 20th January 2009 at http://forums.arm.com

    Please help me identify the best compiler for CortexM3.
    I currently use armcc from ARM, but curious if that is the best option on the market. So far, I found a couple of options…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Shortest code for memory to memory transfer

    subin t
    subin t
    Note: This was originally posted on 16th March 2009 at http://forums.arm.com

    Hi All,
        Can anyone tell me what is the shortest code I can use for cortex M3 to transfer (a few words) from one memory location to other(without using the DMA).  It should…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • What is the general purpose register number for LR in Cortex M3

    Umut Umut
    Umut Umut
    Note: This was originally posted on 25th March 2009 at http://forums.arm.com

    Note: Topic title is not valid. It should be "What is the general purpose register number for FP in Cortex M3"

    I would like to know which general purpose register is…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Precise Memory Error

    Susan Davies
    Susan Davies
    Note: This was originally posted on 3rd August 2010 at http://forums.arm.com

    I am working with a Cortex-m3 using assembler and am getting "precise memory errors".  The manuals refer to this fault a lot, but don't actually explain what it IS and how to…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Question : The Definitive Guide to the ARM Cortex-M3

    Kenichi Kenichi
    Kenichi Kenichi
    Note: This was originally posted on 11th December 2007 at http://forums.arm.com

    Dear, all.

    I am new in this forum.
    Recently I studying Cortex-M3 core, so I bought book "The Definitive Guide to the ARM Cortex-M3" by Joseph Yiu.
    This book is very…
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M3 Hard Fault - find cause?!?!?!?

    Tim Borland
    Tim Borland

    Hello all,

    I'm new to the ARM platform and I'm having a problem discovering why my code is generating a Hard Fault.

    My hardware is an mbed platform board with the NXP LPC1768 processor.

    The code in question works when compiled using the mbed…

    • Answered
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • I want to know priority of Cortex-M3 processor

    kyujin
    kyujin

    which interrrupt priority is higher?

    systick vs IRQ(external timer)

    because In my case externl timer is higher then systick.

    I saw that during processing in systick ISR, but  suddenly pc jump to timer ISR

    so  I experimented print out. systick print letter…

    • Answered
    • over 7 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M3: Are "Errata Notice" and "Software developers Errata Notice" the same?

    J K
    J K

    Im wondering if these documents are different types:

    1. Errat Notice, PR141-PRDC-007452, v9.0, 2008

    2. Software developers Errata Notice, ARM-EPM-039114, v2.0, 2014

    From my point of view, these documents are the "same" (of course in another revision).…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex M3 - Literal-pool vs MOVW-MOVT when cache is present

    Remi DUCLOS
    Remi DUCLOS

    This question is a kind of survey:

    Hi folks,

    I know this subject, or almost the same, has already be presented, but I don't found an appropriate answer.

    First, a short reminder

    The Cortex-M3 instruction set offers three ways to load a 32-bit literal…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Yet another processor crash!

    Chris Williams
    Chris Williams

    Yes, my ARM cortex M3 is crashing, whats new?

    Well, after 3 weeks of debug  I am no closer to an answer, so I hope you will not mind if I list what I have tried and see if anybody has a flash of inspiration?

    The setup:

    Bare bones LPC1788 ARM Cortex…

    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • ARM : LPC2148 Registers and programming examples

    Satya Prakash Prasad
    Satya Prakash Prasad

    I am a beginner in using ARM LPC2148 MCU for project purpose. I searched for details about tutorials, example set, registers details of MCU but could not find much.

    Please let me know site that would be useful for me to avail the datasheet, examples and…

    • Answered
    • over 6 years ago
    • Processors
    • Cortex-M / M-Profile forum
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