• DWT

    Gabor M.
    Gabor M.

    Hello,

    I use DWT in Cortex-M4 to catch instructions that write or read memory contents and the problem is it doesn't stop immediately where I expect, it stops after 2-3 instruction later than where it should and the contents of registers are overwritten…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M register RAM and Flash periodical check?

    Half past nine
    Half past nine

    Hi ARM,

    How to check Cortex-M4 register,RAM and Flash periodically using software when the processor is running?

    Best regards,

    Frank

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Machine Learning: PlatformIO and CMSIS-NN

    RajeshSiraskar
    RajeshSiraskar

    Hi,

    I am trying to get started with Machine Learning and the ARM Cortex-M4 processors.

    I've been struggling to get started with neural-networks to work with the PlatformIO environment

    Does anyone here have experience with that please?

    Rajesh

    • over 1 year ago
    • Open Source Software and Platforms
    • Machine Learning forum
  • V2M MPS2+: 'ERROR: FPGA did not configure.'

    Riako
    Riako

    Hi all,

    We have purchased an MPS2+ platform, and everything was going well, but since Friday we are facing an error we do not understand.

    When starting the FPGA configuration (by pressing the 'ON' button on the board), leds start blinking (the screen…

    • Answered
    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Porting the Linux Kernel on the Cortex-M4 architecture of STMicroelectronics STM32F407VGT6 MCU

    Piyush Pandey
    Piyush Pandey

    Hi guys

    This is my first post on this community page.

    Actually I have a ST microelectronics development Board with the following controller on it STM32F407VGT6.


    Now I want to port the arm Linux to it.


    The specs of the controller are as follows:


    -…

    • Answered
    • over 6 years ago
    • Software Tools
    • Arm Development Studio forum
  • Working startup for ARMCLANG Assembler Cortex M4 (STM32F401RE)

    Volker Kugler
    Volker Kugler

    Hi,

    does anybody have a working startup for the microlib-Option of the ARMCLANG assembler for a Cortex M4 (STM32F401RE)?

    Best regards

    Volker

    • over 2 years ago
    • Software Tools
    • Arm Compilers forum
  • GCC 7.2.1 on Cortex-M4 - C++ exceptions not being caught

    David R.
    David R.

    Hi all, first post.  I've posted about this issue in the NXP forums, and it was suggested I post here, since this may be a GCC toolchain issue (if it's not somehow my own fault).  If there's a better place to post this, let me know.  (I didn…

    • Answered
    • over 2 years ago
    • Open Source Software and Platforms
    • GNU Toolchain forum
  • Debug an INVPC exception

    safeg
    safeg

    Hi. I have an INVPC exception that I am trying to debug on a Cortex M4 STM32. The stack contains the following values:

    0x08003555 xPSR
    0x08006824 PC
    0x08006824 LR
    0x00000000 R12
    0x08003341 R3
    0x08006824 R2
    0xFFFFFFFD R2
    0x0000FFFF R0

    The PC and LR both point…

    • over 2 years ago
    • Software Tools
    • Keil forum
  • CMSIS DSP Biquad fixpoint error on Cortex M4

    Rene H.
    Rene H.

    Hi

    I have a problem by implementing a CMSIS Biquad lowpass filter an a Cortex M4 from TI.

    The CMSIS FLOAT filter is working but not the fixpoint  Q15 one.

    It's just a simple 2nd order (1 stage) filter. The coeffs are calculated with Matlab.

    Did anybody…

    • over 1 year ago
    • Software Tools
    • Keil forum
  • CMSIS DSP stage_rfft_f32 function

    lukasz139
    lukasz139

    Hi,

    I am exploring the CMSIS DSP library. After playing for a while I have 2 questions:

    -in case I want to evaluate DFT over bigger data window than 4096 I would need to provide Twiddle Coefficient array for particular size and make aplit the data set…

    • over 2 years ago
    • Software Tools
    • Keil forum
  • ARM M4 to BLUEGIGA module, Multithreading, and Data Buffering

    Anonymowzz
    Anonymowzz

    Hello, I am looking for information about programming an ARM M4 firmware to basically broadcast serial information to a bluegiga WF121-A wifi module. My device will receive 2 serial inputs and I want the serial input packets to be sniffed and broadcasted…

    • over 3 years ago
    • Software Tools
    • Keil forum
  • do you recommend using the V5 compiler or the V6 on cortex m4?

    stac
    stac

    I have recently started using the keil compiler for STM32 cortexL4 series of microcontrollers.

    I am interested in using the v6 compiler, especially as support for the v5 seems to be ending.

    However all the examples seem to indicate that the v6 is not…

    • over 3 years ago
    • Software Tools
    • Arm Compilers forum
  • Cycle accurate simulation/emulation for Cortex - M4 Processor based board

    Fahad
    Fahad

    Hi all,

    I am  a master student in germany and doing my thesis currently. I wanted to measure CPU cycles using emulation/simulation for some code that is running on a cortex m4F processor based board. I had QEMU in mind at initial but it turns out it doesn…

    • over 3 years ago
    • Software Tools
    • Arm Development Studio forum
  • About tool selection

    Alvin03
    Alvin03

    I have to port a solution i am working on for Cortex-M4. I need to build,profile and later optimize.
    Can somebody please suggest which all tool will be helpful. 

    • Answered
    • over 2 years ago
    • Software Tools
    • Keil forum
  • DS-MDK Path Entry Problem with supplied [Colibri-VF61] Blinky_M4 example

    vix
    vix

    I've just downloaded DS-MDK v5.27.0 which adds support for Vybrid VF61 and Toradex Colibri module (which uses this device).

    I opened the supplied <Colibri-VF61] Blinky_M4> example and I noticed there is a "Path Entry Problem":

    the…

    • Answered
    • over 3 years ago
    • Software Tools
    • Keil forum
  • What's happening if NMI is active (via a push-button) during µC (Cortex M4) start-up (power on)?

    Aurelien
    Aurelien

    Hi everyone,

    I need help about NMI that seems to freeze mu µC during power on.

    I use a cortex M4 ( K64 from NXP/Freescale ). On the board I use, the NMI is connected to a push button.

    If I don't press the NMI button, my software run.

    If I press…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Linker in gnu arm toolchain says "group ended without start" thought there is no such option in my build

    ShyamThella
    ShyamThella

    shyam@shyam:~/projects/zynq/microzed/linux_source/Test_Chips$ make
    make -C  /home/shyam/projects/zynq/microzed/linux_source/Test_Chips/../dev_tools/build
    make[1]: Entering directory `/home/shyam/projects/zynq/microzed/linux_source/dev_tools/build'
    Making…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • undefined reference to `atan2'

    Former Member
    Former Member

    Hi Friends ,

    I need to fix this problem and I've read something about gcc but I didnt understand how can I do it.

    [cc] C:\Users\Emrah\Desktop\imu_STM32F407\imu\Src/main.c:39: undefined reference to `atan2'
    [cc] collect2.exe: error: ld returned…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cache attribute write back/write allocate for Cortex-M4

    nothing
    nothing

    What is different between write back with write allocate and write with non write allocate on Cortex-M4.

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Blink Newbie help debug!

    Ole
    Ole

    Hi Forum.

    I'm new to ARM, but have experience with AVR. I'm just trying to make a Hello World with blinky LEDs. I have this board:

    https://forum.micropython.org/viewtopic.php?t=3086

    So ok, everything seems to be setup right. I can compile and…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Hard Faults and MemManage Faults in Cortex m3/m4

    Muzahir
    Muzahir

    I wrote a simple program, where I am writing to an illegal memory location. Writing in an illegal Memory location generates a MemManage fault. And if MemManage is not enabled, HardFault in generated. But in my case hardfault is also not triggering.

    Here…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Need Help regarding IOT

    Chintan
    Chintan

    Hi Team,

    i am completely new to this world, but still i would like to build a solution based on IOT where i can simply sense some object and reflect it status on internet application.

    can somebody please guide me with some documentation on how to get started…

    • over 5 years ago
    • System
    • Embedded forum
  • Cannot access target, debug stopped STM32F407 ARM Cortex

    Ajaz
    Ajaz

    Hello,

    I am trying to run deep learning neural model described in https://www.dlology.com/blog/how-to-run-deep-learning-model-on-microcontroller-with-cmsis-nn/, I am using updated MDK Lite version 5.27. The trace starts running for about 600 seconds and…

    • over 1 year ago
    • System
    • Embedded forum
  • MPU

    Vivek_yadav
    Vivek_yadav

    Hi

    Using STM32f4 Board, I am enabling MPU in between any code (simple program) always causing memory management fault on debugging fault that (

    IACCVIOL) bit is set, It means 

    • Attempting to execute an instruction from a memory region marked as…

    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Interfacing FRDM-K64F with Camera module

    Shwetakr
    Shwetakr

    Hi Team,

    How can we interface FRDM-K64F kit with camera module?

    Thanks & Regards,

    Shweta

    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
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