Looking for a Distributor...
With more and more overseas customers buying our products, more and more people ask whether we (Forlinx Embedded Technology) have distributors or dealers in Europe and any other countries. I think now...
View ArticleRe: GLES3+ GL_DEPTH_COMPONENT16-32 on Nexus 10/Mali T604
I've implemented the GL_KHR_debug extension as follows : PFNGLDEBUGMESSAGECALLBACKPROC glDebugMessageCallback = (PFNGLDEBUGMESSAGECALLBACKPROC)eglGetProcAddress("glDebugMessageCallback");...
View Article免费Cortex-A8开发板,等你来拿
ARM 中文社区-飞凌嵌入式联合发放免费Cortex-A8开发板活动 各位中文用户大家好, 我是斑竹Song Bin 宋斌,告诉大家一个好消息,我们有免费的开发板可以提供给大家使用了。对于我们工程师而言,工欲善其事,必先利其器,有一块好的开发板能让工作事半功倍。此次我们ARM在中国的Partner Forlinx Embedded...
View ArticleRe: Scope of Embedded linux ????
Well as to whether Android is "Embedded Linux" - check out the O'Reilly book "Embedded Android". I think if you are porting Android to a new platform, or adding low-level features to Android itself,...
View ArticleRe: Scope of Embedded linux ????
If you want a platform for learning, might as well start with QEMU - it's a free emulator for the ARMv7instruction set (and down to ARMv5TEJ) with NEON extension. https://en.wikipedia.org/wiki/QEMU#ARM
View ArticleRe: Re: input path to be changed
I believe set semihosting file-base ... is the command you are looking for. See the docs http://infocenter.arm.com/help/topic/com.arm.doc.dui0452t/CHDBCCFA.html
View ArticleRe: Is there a way for me to estimate power usage for various ARM cores...
Hi Karthik, This is definitely a "difficult" problem - even on fixed silicon process different manufacturers will choose different standard cells for the physical implementation, which can dramatically...
View ArticleSWD physical structure
What is SWDIO pin hardware structure? I want to know which is a push-pull or a n-channel open-drain with pull-up.I can't find the maximum of SWD interface frequency. Please, let me know the above...
View ArticleRe: Cortex M4 exception return sequence
Thanks jensbauerIt was step 10 and 11 where I was not getting clear idea. Thanks daith for your inputs as well !
View ArticleRe: Cortex M4 exception return sequence
As daith says, it's possible that another interrupt will be handled by tail-chaining.This may occur between step 8 and step 9.Joseph Yiu once explained the details about this, that the registers R0-R3...
View ArticleRe: Re: Cortex M4 exception return sequence
-In fact, you can never trust what's in R0-R3 and R12, so if you need those values (for instance if you're using SVC, or if you're making some debug-facility), then fetch them from the stack.That makes...
View ArticleRe: Cortex M4 exception return sequence
To me, it looks like you've understood almost all of it correctly. Loading PC with the value of LR is sufficient. LR already holds EXC_RETURN, and you do not have to worry about which stack you need to...
View ArticleRe: Re: Cortex M4 exception return sequence
That is correct.-Note: I wrote earlier that you can use the interrupt routine as a subroutine (or vice versa), but that implies that you're not passing parameters to the routine. -It also implies that...
View ArticleInformation on the Cortex-M7
I believe that many of us are interested in the ARM Cortex-M7.Recently, Joseph Yiu posted a status update, where I asked a couple of questions about the architecture.A few questions on the subject was...
View ArticleRe: Cortex M4 exception return sequence
ARM recommends the following code__asm void SVCHandler(void){ IMPORT SVCHandler_main TST lr, #4 ITE EQ MRSEQ R0, MSP MRSNE R0, PSP B SVCHandler_main}See SVC_Handler for Cortex M0It...
View ArticleRe: Cortex M4 exception return sequence
Good input! -There are some flaws in my above 'example', which your snippet fixes.Detecting a subroutine call could probably be done by an unsigned compare against 0xffffff00; if 'higher', then it's an...
View ArticleRe: I'm developing a Retail Merchandising Display with Real-Time Tracking -...
Correct me if I am wrong, I thought retailers are already doing that, except for the part with HDMI video.
View Article"Eeny, meeny, miny, moe"
Product development is all about making choices, but not all need to be compromises. Though the latest offerings of SoC FPGA's may appear very similar, embedded systems experts will disagree. The...
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