• ECG, Wavelets and Cortex-M4

    Carlos Delfino
    Carlos Delfino

    Hello
    First of all a successful 2017 for all of us.

    I'm looking for examples of C algorithms for applying the concept of wavelets to identify ECG patterns in data collected with a Cortex-M4, preprocessed and later sent to a Cortex-A for graphical re-ordering…

    • Answered
    • over 3 years ago
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  • Best version tracking tools for embedded software?

    Andrea Bettati
    Andrea Bettati

    Hi to you all, I'm working on a software involving an LPC4370 (Cortex M4 + 2*M0) and LPCXpresso IDE. I'd like to know if someone knows a good version tracking tool for the platform.
    My key requisites are:

    • free/cheap for smal teams
    • integration…
    • Answered
    • over 3 years ago
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  • ethernet mac address

    karthik dharma
    karthik dharma

    i am looking for a ethernet connection for my pump. which i am using a stm32f discovery board. for this i need a mac address. how can i get an mac address and how can i interface with the pump and control with my pc. can you all please guide me.

    • Answered
    • over 3 years ago
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  • ethernet connection program stm32f4 discovery board

    karthik dharma
    karthik dharma

    Hi,

        I am doing my pump project using stm32f407vg controller. I want to control my device through pc. where i have developed a .NET software for various parameters. through that i want to control the device through ethernet. how i can i control the device…

    • Answered
    • over 3 years ago
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  • regarding pwm issue in stm32f4 discovery board

    karthik dharma
    karthik dharma

    hi all,

       i am using the stm32f4 discovery board to drive my stepper motor in the rpm of between 0.001 to 500 RPM. for this i am using pwm. my clock frequency is 32MHZ and prescale for ABP1 is divided by 2 of my clock frequency. in this i cant make my…

    • over 3 years ago
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  • Regarding ARMv8M processor Cortex-M23

    anilyadav
    anilyadav

    Hello,

    I am looking for a development board and software development kit with ARMv8M processors Cortex-M23.

    I need to prototype trusted applications in c/c++ programming language for my research work.

     I am expecting availability of development libraries along…

    • over 3 years ago
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  • Can I use LAPACK with Cortex-M4?

    Michelle Tseng
    Michelle Tseng

    Hi, everyone!

    I'm a beginner of  cortex-M4 developing which the student of master degree.

    Actually, I implement the algorithm model on cortex-M4 platform now, including calculation of eigenvalue and eigenvector.

    I have found the LAPACK library which…

    • Answered
    • over 3 years ago
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  • Value of "__initial_sp"

    niekiran
    niekiran

    Hello , 

    I am new to ARM cortex M processors and while doing some coding on my board using KEIL  i found that

    at location 0x0000_0000 my debugger shows the value "0x2000_0660" . Thats the value of the MSP loaded. 

    but i really dont understand how…

    • over 2 years ago
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  • TRACEDATA Capture issues

    Dave Marples
    Dave Marples

    Hi there,

    I am the author of the open source Orbuculum tools for SWO data parsing on CORTEX-M targets. I am currently expanding those tools by implementing 1, 2 & 4-bit parallel TRACEDATA capture from CORTEX-M3/M4 CPUs using a small FPGA connected to…

    • Answered
    • over 2 years ago
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  • Custom RTOS - general ideas veryfication

    en2
    en2

    Greetings Community !

     

    Im currently working on my custom real time kernel project (STM32F7). It was really in mature stage of developement, when i figured that its not compleately ISR safe, gets stucked sometimes, corrupts some data etc. Im rebuilding…

    • over 2 years ago
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  • Building position independent binary

    dburrell
    dburrell

    Hi,

    I've created a custom firmware update process on a TI TM4c1294NCPDT (Arm Cortex-m4f) and have divided the flash into 2 partitions. I'd like to be able to build one image that will work in either of the partitions but so far haven't figured out how…

    • over 2 years ago
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  • ARM cortex M4

    Loay
    Loay

    Which Linux version used for ARM cortex M4 ?? and how to install this linux version on TDA3x from Texas instruments ??

    • Answered
    • over 2 years ago
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  • [Cortex M0] Number of clock cycles for LDR instruction

    Mohammed Aboelnasr
    Mohammed Aboelnasr

    Hello,

    I need to know the exact number of the clock cycles per each instruction in terms of the system clock frequency especially the "LDR" instruction

    Here is the needed instruction: "LDR r3,[r1]" 

    Note that r1 is an address in the…

    • over 2 years ago
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  • Where is M4 hardware breakpoint address?

    ctc8631
    ctc8631

    Hi I'm learning cortex m4 debug feature, 

    I'm using stm32f407 discovery with openocd in ubuntu

    I'm trying to understad breakpoint feature,

    I can set breakpoint address in openocd and chip will stop when pc run to that address

    like main function…

    • over 2 years ago
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  • How can I force a Usage (instruction) exception in cortex m4

    Owain
    Owain

    I want to test all my exception handlers; but have so far failed miserably at forcing a usage exception.

    I tried disabling FPU and running a FPU instruction, but this resulted in HARD Fault rather than USAGE Fault.

    Anyone know a good way to foce such…

    • over 2 years ago
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  • FreeRtos software timer

    Former Member
    Former Member

    Hi friends, I am using STM32CubeMX and trying to start software timer but I couldn't start.These are my codes.Do you have any simple example or How can I manage it?

    #include "main.h"
    #include "stm32f1xx_hal.h"
    #include "cmsis_os…

    • over 2 years ago
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  • Stick timer

    Mahi
    Mahi

    i am using LPC11C24FBD48 Controller and i initialized the Stick timer but when i run the code it is going to Hard fault handler.

    __STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
    {
    if (ticks > SysTick_LOAD_RELOAD_Msk) return (1); /* Reload value…

    • over 2 years ago
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  • SAM4S Bootloader Jump Address Offset

    cSmout
    cSmout

    Hi everyone, 

    Apologies for asking a very similar question to those that are out there already, but this is my last hope as I have scoured Atmel and arm forums for a solution that works for me, but not found any yet,

    I am trying to write a bootloader for…

    • over 2 years ago
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  • Atmel SAM4E Bootloader/VTOR executing new application

    Paul Maddox
    Paul Maddox

    I've written a boot loader for the Atmel SAM4E device which is working to a point, it can receive new application code via SPI, erase flash and write to flash, but I don't understand how to execute the new application. I've learned the VTOR can be relocated…

    • Answered
    • over 4 years ago
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  • Connection and interface between Cortex M3 and Wireless Activity detection transmitter

    Edward19
    Edward19

    Hello, I am looking for USB shield to connect with arm cortex m3 to communicate through the wireless receiver that receives the signal through wireless Activity detection transmitter store.ncd.io/.../ which detects the motion near the room entrance which…

    • over 1 year ago
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  • DSB command for external Nor-Flash memory (Cortex-M7)

    NikolayRU
    NikolayRU

    Good afternoon, dear collegs! 

    I'v started to connect STM32H7 (Cortex M7) MCU with exteranal Nor-Flash memory by use FMC. I'm alittle confused by write command. Without DSB() command it refuses to work correct. Program loads from embedded Flash (7 waitstaits…

    • over 1 year ago
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  • Cortex M series and their compatibility

    Prsr
    Prsr

    Hello ,

    I am new to ARM. I have a particular software package written to the Cortex  M0+ MCU. How can I evaluate that these libraries will be compatible with other type of cortex M series microcontrollers. I need to perform a porting from the given MCU…

    • over 1 year ago
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  • FFT algorithm

    ChungHustVN
    ChungHustVN

    Hello everyone. I write FFT, it's ran! But it run very slow speed, I try on STM32F103C8T6 72MHz and used timer to measure time, the result about 360ms and I can't run another program. Somebody help me please! Thank all!

    My code here: the DFT http…

    • over 1 year ago
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  • Lock up state in ARM Cortex M4F

    bewoke2
    bewoke2

    Hello community ! 

    I hope you guys are doing fine, this is my first post here with the arm community. 

    I have a problem regarding my MCU Arm Cortex M4F S32K144, after performing several resets each 3/4 seconds (needed for my test), I see that, randomly…

    • over 1 year ago
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  • 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 =…

    • over 1 year ago
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