• error: Hard Fault Handler

    kiran
    kiran

    HI,currently i am working on project based on stm32f407 chip.my development work has been stopped since two days as i have stuck in hard fault handler. Please  guide me how to trace the fault ???i tried every possible way i could.but result in nothing…

    • Answered
    • over 5 years ago
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  • IP Camera interface via STM32

    Gopal Amlekar
    Gopal Amlekar

    Hi all,

    I am looking for developing an IP camera based system based on STMicroelectronics STM32. The way it is supposed to work is:

    STM32F4 will have few IP cameras connected to it. It may have a web server running so it can be accessed from outside…

    • Answered
    • over 5 years ago
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  • will cortex m3/m4 enter a lockup mode if a serious fault happened while FAULTMASK is set

    Mustafa S.
    Mustafa S.

    Greetings,,

    what happens if FAULTMASK is set in cortex-m3/m4 and one or more serious fault happened like bus fault, MPU violation, invalid instruction, stack corruption.. etc will the processor enter a lockup? if not what would be the status of the processor…

    • Answered
    • over 5 years ago
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  • How to change the BMI(Boot Mode Index) with Serial Wire Debug Protocol???

    harshan
    harshan

    Greetings,

    sir/madam i am working on serial wire debug protocol. I was implemented serial wire debug protocol, which was successfully tested for used controllers like xmc1100,xmc4500..etc, when i tried to Access the control on newer controller i.e xmc1100…

    • Answered
    • over 5 years ago
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  • Align source and assembly

    Poonam
    Poonam

    I have a source file, converted it to assembly and added 2 instructions and generated the final elf. When I load this final elf, symbols doesnt match the source due to assembly instructions addition.

    Is there a way to align them ? am using ARM cortex-M4…

    • over 5 years ago
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  • Open Source IDE

    Jeevan
    Jeevan

    Now we are thinking of using cortex M4 based MCU in custom board design, can I know is there any opensource IDE/Toolchain available?

    Is there any other opensource cross compilation tool chain available for  cortex M4 ?

    thanks and regards,

    Jeevan

    • Answered
    • over 4 years ago
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  • GNU Scientific Library vs CMSIS Library Time and Space complexity

    Laxmi Kant Tiwari
    Laxmi Kant Tiwari

    Hello,

             I have been using CMSIS library for implementation of DSP functions in ARM, however, CMSIS have very limited DSP functions. Although GNU has many DSP functions which CMSIS do not, It only have floating point implementation. I am trying…

    • Answered
    • over 4 years ago
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  • file compression with cortex M4

    Brun Charly
    Brun Charly

    Hi

    I'm using a kinetis K64 cortex M4 with FreeRTOS and I need to compress files on a SD card. I have 100-150ko free Ram.

    Do you know a library for this ? I found only solutions with 1Mo minimum RAM requirement.

    It's csv files. I have a lot of time available…

    • Answered
    • over 4 years ago
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  • FFT C-File

    Jochen
    Jochen

    Hello everybody,

    im using the Math.h file to do a rfft with 1024 points und q15 datatype.

    So far everything works fine, and I get good results. It needs a computation time of ~720us on my CortexM4 @100Mhz.

    This is very Impressive, but to long for my application…

    • Answered
    • over 4 years ago
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  • Cheap alternative of J-Link Segger

    Horaira
    Horaira

    I am looking for some alternative of J-Link Segger for Cortex-M3/4 , the cheapest one is J-Link Base as J-Link Lite can be used only with evaluation boards, 

    Any suggestion ?

    I am using GNU arm gcc as toolchain and debugger and Eclipse as IDE, I…

    • Answered
    • over 4 years ago
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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
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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
    • System
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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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  • 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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  • 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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  • 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 5 years 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 2 years ago
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  • ARM Toolchain/Linker support for External RAM on EBI Interface

    Ritesh Prajapati
    Ritesh Prajapati

    Hi,

    We are working on ARM Cortex-M4 (Nuvoton NUC472) based SoC as per our requirement and we need support to set specific object (.o) or specific
    library file (.a) into specific section into External RAM on EBI Interface.

    So, Would you please provide…

    • over 1 year ago
    • System
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