• What is the advantage of floating point of CM7 versus CM4

    Rastislav
    Rastislav

    Hi all,

    I did some of the investigation based on comparison of FPU based algorithms on CM4 and CM7 cores. All the code/data were placed into the single cycle memory with full utilization of modified / true Harvard architecture, it means:

    - on CM4 - code…

    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Dual core cortex-m7 for security applications

    Haram80
    Haram80

    Why nobody offers a dual core cortex-m7 solution for security applications, even if the lockstep functionality is provided?

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • c register config

    Rajeswari Pallagani
    Rajeswari Pallagani

    Hi

    i'm tring to implement code for lin interface by using driver functions for atsame70q21.i was done code it is compiled. i was debug the code check what in registers that time what i know is some registers are not configured i dont how to do that.is…

    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • The easiest way to debug a lockup reset on Cortex M7

    mastupristi
    mastupristi

    In my Cortex M7 based project I am in a condition where often a reset takes place apparently for no reason. The only thing I can think of is that there has been a lockup.
    If I have a breakpoint at the first instruction of the Handler Reset is it possible…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • How many bits has TBLOFF in VTOR for Cortex M7?

    mastupristi
    mastupristi

    I'm reading the "Arm Cortex-M7 Devices Generic User Guide" and at paragraph 4.3.4 I find:

    What does that mean? What is the value of the bits [31:30]?

    In my SOC, the Flash is at the address 0x6000 0000, so bits [31:30] are 0 and 1. Does this…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Understanding XDMAC on Cortex-M7

    Paul Braman
    Paul Braman

    I've inherited some XDMAC code and no one that wrote this code really seems to be able to explain anomalies that I am seeing. So, I'm trying to understand just the basics in an attempt to make sure it was written correctly in the first place. Here we…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Buffer Depth of UART in Arm cortex M7 processor

    Jeevan
    Jeevan

    Can any one tell me what is the Buffer Depth of UART in Arm cortex M7 processor.

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Optimized RGB to YCbCr conversion on Cortex-M7

    Ilyes Gouta
    Ilyes Gouta

    Hi,

    Does ARM make available optimized routines for RGB/YCbCr conversions (e.g. RGB16/RGB888 to YCbCr 4:2:0 and 4:2:2) on Cortex-M7 (e.g. using SIMD instructions and intrinsics)?

    (and in general, is there such an optimized library for DSP and image processing…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M7 minimum schematic ?

    dgubber
    dgubber

    I'm looking to start a new design based on the ARM Cortex-M7 and have been reading thousands of pages of documentation ( not done yet of course ). I am able to design my own schematics and PCBs so I'm trying to first determine the very bare minimum to…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Help Choosing a processor

    strawberryfieldsforever
    strawberryfieldsforever

    I have been given the task of selecting a suitable processor for a project in which we will have a dedicated processor.

    The project will involve configuring HW and inverting matrices in C.  We will use the Cholesky algorithm in double precision.  We don…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • When will be the Release of "The Definitive Guide to Cortex M7" ??

    harshan
    harshan

    Hi Sir,

    may be the title of this question looks fun, but i am eagerly waiting for your next book "The Definitive Guide to Cortex M7" are you working on this book?? When could i Expect this book

    Thanks and Regards,

    Harshan.

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • mismatch between ARMv7-M ref manual and core_cm7.h

    jheissjr
    jheissjr

    The ARMv7-M reference manual notes there eight ITM trace enable registers called ITM_TER0 to ITM_TER7.  However, core_cm7.h only has one ITM_TER register.  Can you clarify?  Is it an error in core_cm7.h?

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Trying to find basic performance measurements of ARM cores

    eskimoalva
    eskimoalva

    Howdy, I was trying to find some basic performance benchmarks for a couple of different ARM cores: The Arm 926EJ-S, Cortex A9, and the Cortex M7.

    I am looking for primarily DMIPS (per MHz or a form that requires me scaling to my specific chip is fine…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Semihosting in DS-5

    Wilfrand
    Wilfrand

    Hi, I am trying to do file in DS-5 (evaluation version) using semihost, gettting errors (fopen returns -1). Is the eval version not able to do file IO?

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex-M7 VFMA usage

    GDzsudzsak
    GDzsudzsak

    Dear All,

    this is my first post and I hope I do not make any serious mistakes.

    My question is regarding the use case of the cortex-m7 VFMA/VMLA instruction.

    I am evaluating a polinomial for which the C compiler emits VFMA.F32 instructions. Out of curiosity…

    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • DMB, DSB, ISB on Cortex M3,M4,M7 Single Core parts

    Trampas
    Trampas

    I have been reading through the ARM documentation on memory and instruction barriers. 

    I have read that the single core ARMv7-M parts do not reorder instructions, as such the DSB and ISB are not needed, is this correct? 

    I have also read the same about…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Is a DMB required between loading BASEPRI and storing BASEPRI_MAX?

    Ramzyo
    Ramzyo

    Hi,

    I have a question regarding BASEPRI, BASEPRI_MAX, and DMBs as they relate to both the V7-M and V7E-M architectures.

    Let's say I have the following assembly,

    // stuff
    mrs r0, BASEPRI
    msr BASEPRI_MAX, #3
    // more stuff

    Is it necessary to put a…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Looking for typical max frequency for Cortex-M CPUs

    ahming
    ahming

    I'm looking for information on the typical max frequency (or typical frequency range) for the Cortex-M cores, in 40nm. Is there any documentation on that? Thanks.

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Number of Integer and Floating point execution units in M7

    Kallooran
    Kallooran

    Hi guys,

    I have 2 doubts.

    1) the number of integer and floating point execution units in cortex M7

    2) is the number of pipeline stages different for integer and FP 

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • When an exception is taken into account

    Karolis
    Karolis

    Hi

    Related to ARMv7-M architecture:

    I am searching through all infocenter documents but still cannot find anything and answer this question: "When an exception is taken into account?" I mean, are exceptions only serviced after the current instruction…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • MIPS of Arm cortex m7

    shreyas@007
    shreyas@007

    Hi.

    I need the MIPS of cortex m7 processor. The results which I saw on wikipedia were in DMIPS. But i need it in MIPS only.

    Can someone help me with it?

    Thanks,

    Shreyas

    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Cortex M7 DSP moving average UMAAL

    Mr_M_from_G
    Mr_M_from_G

    Hello,

    I am looking to do a moving average function using DSP instructions of ARM Cortex M7. Unfortunately I couldn't find a direct example. My goal is to have variables for

    - the sum

    - the new value

    - the oldest value

    Then the algorithm is sum =…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • how dose the PC run to startup.s when the mcu reset

    rookie enginner
    rookie enginner

    Hi,dear enginner:

        i want to know how the PC run to startup.s when mcu reset?

       The Definitive Guide to the ARM Cortex-M3 says address 0x00000000 is MSP‘,address 0x00000004 is ResetVector.

       But when I look at STM32F767, I find that 0x00000000 and…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Can't understand the difference between armv7e-m and armv7e-m-pic?

    Bilal Wasim
    Bilal Wasim

    Hello people. I'm trying to do libgcc extraction for hard FPU's for k70 tower board. However, when I look at the libgcc library for arm targets, I find armv7-m, armv7e-m and armv7e-m-pic. I'm able to deduce from the armv7-m reference manual that the difference…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Capturing video on ARM Cortex M7

    Lorecn
    Lorecn

    My intent is to capture a low-medium fps (5-10 fps) of some seconds duration. What's the best way to do that, and what can be a feasible compression on Arm Cortex M7 ?

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