• How to configure Cortex M3 endianness?

    Kalidas Tate
    Kalidas Tate

    I found two statements in cortex m3 guide(red book)

    1. Cortex m3 supports both Little as well as big endianness.

    2. After reset endianness cannot be changed dynamically.

    So indirectly it is telling change endianness settings in reset handler , is it so…

    • Answered
    • over 3 years ago
    • System
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  • Arm cortex M3(LPC1769) MPU settings

    swapnil.mishraj
    swapnil.mishraj

    Hello everyone,

    I am trying to set up the MPU in my LPC1769 Xpresso board. The memory map of LPC1769 is as given below:

    512kB FLASH           @ 0x0000 0000 – 0x0007 FFFF
    32kB on-chip SRAM @ 0x1000 0000 – 0x1000 7FFFF

    I am only configuring 2 regions…

    • Answered
    • over 3 years ago
    • System
    • Embedded forum
  • to size boundary of the structure alignment

    Ras Sharif
    Ras Sharif

    dear All,

    i started an arm cortex m3 project using eclipse+gnu.

    i want to size boundary of the structure alignment.

    where and how i can do it?

     

    thanks and regards,

    Ras

    • Answered
    • over 3 years ago
    • System
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  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
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  • Flashing STM32L0

    sarthak.kelapure
    sarthak.kelapure

    I have made a custom board for STM32L072CZ by ST. I am flashing it using STM32Cube Programmer via UART. When I flash it, I get the application running(say blinking LED) for the first time and as soon as I reset it, the application stops running. I checked…

    • over 2 years ago
    • System
    • SoC Design forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • [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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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
    • System
    • Embedded forum
  • 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 5 years ago
    • System
    • Embedded forum
  • 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 2 years ago
    • System
    • Embedded forum
  • 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 2 years ago
    • System
    • Embedded forum
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