• Help with programming STM32F103RCT6 board.

    makiyoung
    makiyoung

    I have bought  this Cortex M3 board. Now I want to program it through jtag.

    So I bought this wire. By using the USB to serial interface of my linux machine, I want to program the board.

    I went to read the data sheet of board here[1]. In section 2.3.29…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Program ARM-device from Linux

    yahniukov
    yahniukov

    Hello everyone!

    I want to buy STM32F103C8T6 and my os is Ubuntu and I don't want to use IDEs. I already found the developer's tools - GNU Arm Embedded Toolchain, but have the question - there is a suitable linux software to program ARM devices…

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

    lyk
    lyk

    Hello, when I use stm32f103xx, I am confused of  one of the boot modes it supported. One of  the boot modes is booting from embedded SRAM while the I-BUS of Cortex-M3 is connected to FLASH only . When boots from SRAM,  how Cortex-M3 fetches instructions…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Hard Faults and MemManage Faults in Cortex m3/m4

    Muzahir
    Muzahir

    I wrote a simple program, where I am writing to an illegal memory location. Writing in an illegal Memory location generates a MemManage fault. And if MemManage is not enabled, HardFault in generated. But in my case hardfault is also not triggering.

    Here…

    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Store the value of PC to Memory address

    Muzahir
    Muzahir

    I want to store the value of Program Counter(pc) to a memory location.

    I did this, 

        LDR R1, =[0x20000000]

        STR R15, [R1,#0]

    I got an error saying, "Error: r15(pc) not allowed here -- `str R15,[R1,#0]'.

    How should I get over this error?

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • the means of tail-chaining of interrupts

    xiasxian
    xiasxian

    hellow

         I am reading the book  “Cortex  -M3 Embedded Software Development” on page of 3,chapter 1.1 Nested Vectored Interrupt Controller (NVIC),

    i don not understand  the means of tail-chaining of interrupts .In the sentence of  "The NVIC also…

    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • i2c LPC1788 interface with raspberry pi3

    Jvis
    Jvis

    Greetings ARM peoples

    I am trying to interface LPC1788 with Raspberry Pi3 through I2C.

    Raspberry Pi will be master and LPC will be slave (More LPC slaves have to be added in future)

    Raspberry will send set of data to LPC and LPC will generted output for…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • NVIC and ARM asm

    martin
    martin

    Cannot configure interupts of TIM6 on stm32f103 board

    Does my NVIC configuration wrong?

    Code:

    @ stm32f103 timer & interrupt test by laper_s (from 2019-02-02)
    
    .thumb
    .cpu cortex-m3
    .syntax unified
    
    .word   0x20005000
    .word   start + 1
    
    b   start…

    • Answered
    • over 1 year ago
    • Processors
    • Cortex-M / M-Profile forum
  • Question about the Pipeline, clock cycle and machine cycle in Cortex-M Series.

    tyskin
    tyskin

    Recently I'm learning the implement of ARM cortex m core in order to optimize my software to be more efficient and be easier to predict its execute time. But now I'm confused about the clock cycle, machine cycle and the pipeline of cortex-m.

    …
    • 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
  • infinite Break Points

    harshan
    harshan

    Greetings,

                   sir/Madam the hardware break points use internal FPB comparators so that the address we update there are internally comare with program counter if value == program counter then automatically the core will be halted and ready to…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Instruction timings - arm cortex m3

    newbie
    newbie

    I am using the following 3 assembly sections to read a memory mapped i/o to multiple registers and to read same i/o and save it ram respectively , on an ARM Cortex M3. I want to know exactly how many CPU cycles this would take to complete. Or in other…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • [C++11][Cortex-M] - distortos - object-oriented C++ RTOS for microcontrollers

    Freddie Chopin
    Freddie Chopin

    Hello!

    I finally decided to share some info about a project I've been doing for the past 8 months. Currently it can be considered "alpha" or maybe "early beta" stage, but - despite literal meaning of these terms - the things that are already done (and…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Addressing memory question for Cortex-M3

    Merle Wagner
    Merle Wagner

    First I apologize if I am in the wrong place to ask this but can't find info anywhere or I just don't know what question to ask regarding memory address for the Cortex-M3.

    I am very new to microcontrollers. I have an STM32F103VE and I downloaded…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • How to get started with ARM Cortex-M3?

    shadab
    shadab

    Hi, I am eager to learn about ARM, I have a miniSTM32F1 board, and I have little bit knowledge of lpc2148? Please suggest me some tutorial,video,or links.

    • Answered
    • over 6 years ago
    • Processors
    • Cortex-M / M-Profile forum
  • Im using an ARM Cortex-M3(LPC1768).I would like to know how many oscillator periods make up 1 instruction cycle for arm.Like for example,12 oscillator periods make up 1 instruction cycle for 8051.

    Akshay Immanuel
    Akshay Immanuel

    I would like to use the the number of oscillator periods for each instruction in delay calculations for instructions like NOP etc.

    • Answered
    • over 6 years ago
    • Processors
    • Cortex-M / M-Profile forum
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