• CM4: Can processor halt itself by writing DHCSR

    SysTom
    SysTom

    Hello,

    As part of my diagnostic regime I wanted the diag to halt when completed.  It doesn't seem like it can.  It seems to keep running when I 

      CoreDebug->DHCSR = (0xA05FUL << CoreDebug_DHCSR_DBGKEY_Pos) |
                         CoreDebug_DHCSR_C_HALT_Msk…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How cortex-M4 handles data hazard situations in the pipeline?

    HimanshuDoshi19
    HimanshuDoshi19

    Hello to all,

    Since I am working on ARM Cortex-M4, I would like to know about the handling of the hazard situations (especially the RAW, WAR and WAW hazard situations) in the pipeline.

    Is the processor also use the method of "Forwarding" in order to handle…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How does memory work in cortex M3?

    ele
    ele

    Hi 

    Now I'm trying to understand about memories in the Cortex design kit.

    I came across memory address map of cortex M3 when I googling as the below.

    In the image, left one is an AHB memory map, and right one is STM32F103's memory map.

    As you…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M1 on Actel - how to start?

    daniel.s
    daniel.s

    Hello ARM Community,

    some time ago I started with Cortex-M1 core on Actel Proasic3L FPGA. I don't have much experience, but I have development board without working example:) I tried to follow Actel's tutorials and create simple LED blinking application…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Does Cortex-M3/M4 continue with burst in response to ERROR?

    MSaif
    MSaif

    AMBA spec states that 'Master can choose whether to terminate current burst or continue with burst in response to ERROR'.
    What does Cortex-M3/M4 do in response to ERROR? Does it continue with burst in response to ERROR in some special cases?

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • What happens to upper half of 32-bit data bus when reading 16-bit chip?

    Pszemol
    Pszemol

    Hi guys, I am interested in exploring a scenario when Cortex M4 cpu performs a 16-bit static memory read when 32-bit memory is actually on the board.

    The 16-bit memory chip is connected to lower half of the data bus, signals D0..D15 and there are two…

    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • What is the top level difference in features between Cortex-M33 and Cortex-M4?

    Diya Soubra
    Diya Soubra

    This is a very common question.

    The diagram below is a pictorial description of the differences followed by some explanations.

    Cortex-M33 v Cortex-M4 features

    Starting from the bottom:

    • Cortex-M33 is an implementation of the ARMv8-M architecture. Full details are in my blog on the 5…
    • over 3 years ago
    • TrustZone for Armv8-M
    • TrustZone for Armv8-M forum
  • What is the top level difference in features between Cortex-M23 and Cortex-M0+?

    Diya Soubra
    Diya Soubra

    This is a very common question too.

    The diagram is a pictorial description of the differences followed by some explanations.

     

     

    Starting from the bottom:

     

    -Cortex-M23 is an implementation of the ARMv8-M architecture. Full details here.

    -Using the same debug…

    • over 3 years ago
    • TrustZone for Armv8-M
    • TrustZone for Armv8-M forum
  • CMSDK - design multi-master bus

    Phil Burr
    Phil Burr

    Wenkwei asked: "with the M3 designstart CMSDK, is it possible to design multi-master bus? In the IoT Cortex-M TRM, only an ahb-lite structure is illustrated. That document does mention AHB and APB expansion through INTEXP[1:0] but what if there are more…

    • Answered
    • over 2 years ago
    • DesignStart
    • DesignStart forum
  • First compile, verilog files missing

    LeChuck
    LeChuck

    Hi,

    I am just performing the first steps with the DesignStart Eval Edition (Cortex-M0), trying to compile the verilog sources to get a simulation running.

    So I changed /systems/fpga_testbench/trl_sim/makefile to use gcc and modelsim and now I want to …

    • Answered
    • over 2 years ago
    • DesignStart
    • DesignStart forum
  • Cortex-M0 example system

    pangda
    pangda

    Hi,

    II refer to the example MCU system level in the document "arm_cortex_m0_designstart_eval_user_guide", put it into MPS2+ after synthesis, the software uses the following example in this directory.

    D:\CMPS3\AT510-MN-80001-r2p0-00rel0\systems…

    • Answered
    • over 1 year ago
    • DesignStart
    • DesignStart forum
  • How to load program into DesingStart SoC

    vbandaaru
    vbandaaru

    Hi,

    I am trying to get familiarize with the SoC design provided with Desgin Start Cortex-M0 Eval version.

    Here is my setup:

    1. ARM Cortex-M0 core
    2. Design Start Eval  with CMSDK used for SOC design.
    3. Keil MDK – mdk_pro uvision V5.25.2.0
    4. Vivado Tool used…
    • over 1 year ago
    • DesignStart
    • DesignStart forum
  • New AMBA Specification Extends Security to Embedded Design: AMBA 5 AHB5

    Eoin McCann
    Eoin McCann

    The amount of data we generate is growing exponentially. Gartner has predicted that in 2015 the global mobile data traffic will be a total of 52 billion terabytes, an increase of 59 percent on 2014. It’s a staggering number that is driven not just by…

    • over 4 years ago
    • Processors
    • Processors blog
  • Embedded World 2014 - ARM Cortex-M Processor based System Prototyping on FPGA

    Joseph Yiu
    Joseph Yiu

    Several people have asked me for the following paper I presented in Embedded World 2014:

    ARM Cortex-M Processor based System Prototyping on FPGA

    Abstract

    Many SoC designers need to design FPGA prototypes of Cortex-M series processor-based systems for…

    • 8378.zip
    • over 6 years ago
    • Processors
    • Processors blog
  • 10 Useful Facts about Cortex-M System Design Kit (CMSDK)

    Joseph Yiu
    Joseph Yiu

    The Cortex-M System Design Kit (CMSDK) is an extremely useful product for chip designers and FPGA designers working with the ARM Cortex-M processors. It contains a wide range of AMBA bus infrastructure components, example systems, example peripherals…

    • over 6 years ago
    • Processors
    • Processors blog