python (65.2k questions)

javascript (44.3k questions)

reactjs (22.7k questions)

java (20.8k questions)

c# (17.4k questions)

html (16.3k questions)

r (13.7k questions)

android (13k questions)

Questions - arm

arm cortex log10 function sometimes returns 0

I'm using stm32f4xx mcu with <math.h> lib when I convert the mW to dBm, used log10f() function but, the log10 function return value is not valid occasionally. here is my code: volatile float pow...
test-img

박동진

c

arm

math.h

Votes: 0

Answers: 0

Warn : GDB connection 1 on target STM32F103C8Tx.cpu not halted undefined debug reason 8 - target needs reset in Linux Ubuntu 21.10

I'm using STM32CubeIDE on Kubuntu Linux and when I want to program my microcontroller it gives me this error Image Error while trying to upload the code CubeIDE console error Open On-Chip Debugger 0.1...
test-img

Mohammad Mahdi Mohammadi

arm

stm32

openocd

stm32cubeide

stm32f1

Votes: 0

Answers: 0

R3 register of ARM-Cortex M4F suddenly changes value right after ldr instruction

I have this really strange bug where an ldr instruction first loads in a valid value into the R3 register, then when I use the debugger to step over one instruction, it all of a sudden contains the va...
test-img

Vincent Kenbeek

assembly

gcc

arm

cortex-m

microchip

Votes: 0

Answers: 1

Latest Answer

I remember Microchip compilers having strange (timing?) issues where lines of repeated instructions behave in unexpected ways. I still don't know about the details but sometimes padding NOPs between t...
test-img

X Zhang

ARM - Memory map leakages

Lets assume that we are using MCU with ARM Cortex-M4, 256KB of FLASH and 64KB of RAM. This CPU contains memory map like showed below: As I understand it correctly, the memory map tells us what are th...
test-img

Bratw

arm

embedded

microcontroller

Votes: 0

Answers: 3

Latest Answer

As I understand it correctly, the memory map tells us what are the maximum sizes of memories, that limits MCU vendor and where that CPU will look for it. Yes. For example, we cannot use Cortex-M4 w...
test-img

Lundin

Posts

Questions

Blogs

Jobs