Hello everyone,
I have an LPC4337 running uCLinux. I'm trying to get code to run in the M0 in parallell.
I load the code to 0x10080000, set the M0APPMEMMAP to 0x10080000, release the M0APP Reset and nothing happens. I have to reset the M0-core using…
Hello.
I'm studying about the tail chaining of Cortex-M0.
Is it same as Cortex-M3 or M4?
Best regards.
Hello, Everybody. I have several questions.
1. Please See the NVIC_Type structure. I don't understand about why ISER,ICER,ISPR and ICPR use size of array 1( I think It can use just __IO uint32_t ISER; ), and what does RESERVEDs do???
2. I would like…
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 need some indications to begin writing a program.
Write a compare routine to compare 64-bits values , using only two instructions.
Thanks for your indications !
Hi,
in the course of developing an SWD debugger, I try to find the necessary components on the Access Ports. Through the CIDRs and PIDRs, I can divide components in being CoreSight components or being Generic IP. My first supported targets will be nR51…
Hi.
I'm a robot engineer and I usually use MCUs such as nrf52832(cortex-M4f) or ST32f407(cortex) to use various sensors.
Since those MCUs have an FPU inside, calculating time was quite fast without any burdensome optimizations.
The problem is, I have to…
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…
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…
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 all,
We have purchased an MPS2+ platform, and everything was going well, but since Friday we are facing an error we do not understand.
When starting the FPGA configuration (by pressing the 'ON' button on the board), leds start blinking (the screen…
Overview of stack size requirement estimations in Cortex-M based applications
“How much stack memory do I need for this application?” - This is a common question for many software developers working on applications that run on microcontroller…
Body control applications can sometimes be overlooked in favour of application areas which at face value are seeing a greater rate of change, such as advanced driver assistance, safety and electrified powertrains. However, the sheer volume of body domain…
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.
…
The exploding IoT (Internet of Things) chip market is expected to reach 20 billion devices by 2020 by many predictions. The majority of these will NOT be wearables.
The IoT market will be driven by Data and Subscription business models. THOUSANDS of…
In the DSP lib files like arm_conv_f32, arm_fir_f32, the algorithm implementation in Cortex-M3/M4 and in Cortex-M0 is different. i.e., loop unrolling is used in M3/M4 and it is not used in M0.
Pls tell me the reason behind it. Is there any advantage of…
Good news for those basketball players looking to hone their hoop skills, a new coach has officially arrived. Sure, professional, collegiate and other competitive leagues have their ways to tracking and analyzing shot stats and performance data; however…
Hi I'm very excited to announce of the release of a new product we have been working on for the last few months called the Cortex-M Prototyping System, as part of the Versatile Express family of products. This development board is targeted at the evaluation…
In my presentation at ARM TechCon 2013 last week "ARM Cortex-M for Beginners", someone asked a question of “Is there any advice for getting the best performance? Which C compiler to use?
This is a very interesting question. One page of…
I saw what looks like the start of a series of short videos on the ARMflix YouTube channel.
Of course, it doesn't go into much details, but I thought it was a simple way to discover the series.
As they come up, anyone please feel free to edit this…
