• I have an Arm 32-bit Cortex V3.10, Does anyone know the manufacturer/email?

    jeff
    jeff

    I need a configuration to get rid of the spacing between the numbers in a single barcode.

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Is ARMv7-M3 thumb instructions compatible to ARMv7-A thumb?

    Kaiyuan
    Kaiyuan

    Hello guys,

    I am trying to verify some features of ARMv7-M3 in a software simulator platform for ARM. But this simulator only support ARMv7-A ISA.

    Is ARMv7-M3 instructions compatible to ARMv7-A, especially thumb instructions?

    Thank you very much.

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Race condition between wake up event and WFI on Cortex-M3/M4

    neo
    neo

    When I read below thread in arm forum, I still not clear which one is the safety way.

    Cortex-M4: guaranteed wakeup from WFI?

    There're two solutions mentioned above, using WFE instead of WFI, and swap __WFI() and __enable_irq().

    I can understand WFE…

    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Can we Modify the Flash Memory Access Permission with MPU( Memory Protection Unit)

    harshan
    harshan

    Hi Sir,

             Can i change Flash Memory Permission through MPU??

    Thanks and Regards,
    Harshan.

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • maximum level of functions than can be called within

    NABEEN LAL AMATYA
    NABEEN LAL AMATYA

    function1 calling function2, function2 calling function3, function3 calling function4 and so on.

    Maximum stage depends upon Stack Size, right? How to identify Stack Size and if required how to change it? I am using IAR and Fujitsu ARM Cortex M3 MB9AF312K…

    • over 4 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Real Value of PC Register.

    Carlos Delfino
    Carlos Delfino

    I've been reading books on the ARM Cortex-M architecture and as already mentioned in other post, all the books are consistent in saying that the PC points four bytes (Thumb Instruction Set) forward due to Pipeline (prefetch).

    Did some testing with…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How long bitfields on which ARM?

    Øyvind Teig
    Øyvind Teig

    I need to be able to handle long bitfields as effectively as possible. Right now I need up to 64 bits in length.

    Are there instructions to set, clear and test individual bits in one cycle available for some of the architectures? Which? Particularly, will…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • If CAN receive buffer is'nt cleared before a new message arrives,will it over-write the earlier data?

    Akshay Immanuel
    Akshay Immanuel

    I am writing an application where a number of devices send messages to a common CAN processor in LPC1778 via CAN bus.

    FYI-i dont need to use Acceptance Filter because all messages have to be allowed.

    My question is that,if Device A sends a message and after…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • ARM Cortex M3 STM32F207 processor hangs during the initializing if the code-size is more then 64k

    Stefan Tesche
    Stefan Tesche

    Hallo,

    I'm using a ARM Cortex M3 STM32F207 processor and if the code of  my project becomes a value of more than 64k, the processor hangs before the PC reach the __main().

    The code starts at 0x08020000 (sector 5) and hangs at a Breakpoint or any…

    • Answered
    • over 5 years ago
    • Processors
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  • [CM3]assembly language trouble

    stupidMokey
    stupidMokey

    CORE: STM32F103ZET6

    Hi,Pros.

         Here Monkey comes agian

    I have met a problem with my code,see below:

    /* --------- code here --------- */
         .section .data
    _sp_usart:
         .word     _stack_usart
    _stack_usart:
         .space     0x100…
    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Break Points and Watch Points

    harshan
    harshan

    Greetings,

                   Sir,i am working on SWD, after  Research on Break Point & Watch Point i found One Thing That There are Some Comparators will Do These Things but I am not Very Sure That How These are Work …

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Get current active interrupt priority

    Jonathan Weber
    Jonathan Weber

    Hi everybody,

    We are working on a simple priority RTC (run to completion) framework for the Cortex M3/M4. Thanks to the NVIC/BASEPRI, we got most of this functionality for free but we want to extend it to user tasks.

    In our implementation we need to determine…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Continue the Target using Serial Wire Debug Protocol

    harshan
    harshan

    Greetings,
                   sir, i am working on serial wire debug protocol and till now i succeeded in halt,write,erase,and reset the target. now i am trying to implement breakpoints and watch points on my custom debugger. for break point i read "the definitive…

    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How many times same interrupt can be in pending state at a time? (In ARM CM-3)

    sandeep tayal
    sandeep tayal

    Could not find the answer to How many times same interrupt can be in pending state at a time? (In ARM CM-3) e.g. :

    We are processing one interrupt INT_RX, at the same time 3 more packets received. so I expect 3 times more this interrupt to appear sequentially…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • [CM3]which clock sources can be closed?

    stupidMokey
    stupidMokey

    Hi bro,I am wondering which clock sources can be closed by software within stm32?thanks for helps.

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How to get Cortex m3 soft core

    Vivek Jayakrishnan
    Vivek Jayakrishnan

    Hi,

    I needed to know where i could get arm cortex m3 soft core. Its for my masters thesis for which i'll be also using Keil uvision 5.

    Thanks in advance

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Access ETM without using a debug kit

    Lorenzo_UR
    Lorenzo_UR

    Hi

    i'm using Nucleo board F401RE.

    i want to access to ETM with code.

    i'm using IAR Embedded Workbench

    My code:

    #define ETM_CR 0xE0041000 // Address of ETM_CR

    #define ETM_LAR 0xE0041FB0 // Address of  ETM_LAR

    #define UNLOCK 0xC5ACCE55 // Value…

    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • stm32f103c8t6 "blue pill" board

    mike kilo
    mike kilo

    Hi,

    I am new to ARM cortex and have started with a m3 board stm32f103c8t6 using a St link v2 usb device and Stm32cubemx . 

    To begin with the IDE used was Keil 5 and everything went ok first shot. I had the on board led blinking within minutes.

    Then just…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • setting breakpoint from code

    franto
    franto

    Hi, my app (cortex m3) needs to set up a breakpoint directly from code, in order to jump to an interrupt when an instruction from a certain address is fetched. This WITHOUT using a debugger.

    Any hint or tutorial? I think the only possible way is the patch…

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

    jay shah
    jay shah

    Hi All, My Question is related to CMSIS DSP Library. i'm working on ADuCM3029 EZ-KIT. I'm using IAR v7.8.1 to build the project. In my application i have an ADC interfaced with the controller, from which i acquire 60 samples and stores it into the buffer…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Arm Instruction Set (Thumb-2)

    AbdAllah Talaat
    AbdAllah Talaat

    Hi , I am New to this Community

    I am Studying now Cortex-M3 .. I am reading Joseph Yiu book...

    I am Confused in the part of the instruction set , and I couldn't get the following:

    as i understand that some of the original ARM 32-bit instructions are…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Where to find the execution cycles of Cortex m7 instruction

    tyskin
    tyskin

    for Cortex-M0, M3 and M4, I can find the execution time in their Technical Reference Manual > Programmers Model > Instruction set summary 里面查看

    http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0432c/CHDCICDF.html

    but for M7 It said that…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • What is the relationship between UART and printf within retarget?

    ele
    ele

    HI.

    I'm trying to understand the relationship between UART and printf within retarget.

    as I understand, retarget supports to implement low level function fputc, if I want to use printf().

    if I am right, I can't still understand the relationship between…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Where could I find a good start for studying Memory Types and Attributes as well as Monitors and semaphores ?

    AbdAllah Talaat
    AbdAllah Talaat

    Hi I was studying the memory system ... and I found three related concepts/topics but I couldn't grasphow these concepts are related to each other and to the AMBA Protocol ... these concepts are : - memory Type - memory Attributes - Monitors and semaphores…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Detect RESET cause on Cortex M3 (STM32F107)?

    Terje
    Terje

    Hi.

     

    I have a problem HW-resetting an external HW-circuit on my PCB (my MCU is STM32F107):

    Because the POWER to my HW-circuits arrives later that to my MCU, I need to (re-) generate a delayed RESET-signal from my MCU towards the RESET-pin of the external…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
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