I need a configuration to get rid of the spacing between the numbers in a single barcode.
I need a configuration to get rid of the spacing between the numbers in a single barcode.
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.
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…
Hi Sir,
Can i change Flash Memory Permission through MPU??
Thanks and Regards,
Harshan.
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…
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…
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…
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…
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…
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…
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 …
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…
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…
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…
Hi bro,I am wondering which clock sources can be closed by software within stm32?thanks for helps.
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
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…
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…
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…
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…
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…
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…
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…
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…
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…