hi can someone tell me how to configure the FRAM FM20L08
Do whatever the Datasheet tells you!
i have read the datasheet but i don't understand well.
Note that this has nothing specifically to do with Keil tools, nor even the 8051; it is all specific to the FM20L08 - so you might be better to ask Ramtron about this.
Don't Ramtron have any application notes, sample code, etc, to illustrate the process?
If you want further help, you're going to have to ask specific questions - "i don't understand well" give no clues as to where you're actually stuck, nor how to help you...
Do you have any experience with other memory devices, and/or the 8051 in general?
Note that the FM20L08 is listed as Obsolete: www.ramtron.com/.../Archived.asp
Ramtron's support page: www.ramtron.com/.../Default.asp
Ramtron's Technical Papers & Application Notes: www.ramtron.com/.../AppTech_papers.asp
thank's for your help! no i don't have any experience with other memory devices, and/or the 8051 in general.i will ask to Ramtron if they have any exemple with.
"no i don't have any experience with other memory devices, and/or the 8051 in general"
OK, so what you really need to do is to learn to walk before you try to run - it's not really the job of either Keil or Ramtron to teach you the basics of 8051 embedded systems!
Here are some introductory & reference materials: http://www.keil.com/books/8051books.asp www.8052.com/books.phtml www.8052.com/tutorial.phtml
The following documents are often referred to as "the bible" for the 8051:
Chapter 1 - 80C51 Family Architecture: www.nxp.com/.../80C51_FAM_ARCH_1.pdf
Chapter 2 - 80C51 Family Programmer's Guide and Instruction Set: www.nxp.com/.../80C51_FAM_PROG_GUIDE_1.pdf
Chapter 3 - 80C51 Family Hardware Description: www.nxp.com/.../80C51_FAM_HARDWARE_1.pdf
i need to defeet the 8051 in the float point code
where to start plz?
"i need to defeet the 8051"
A pair of small clippers should do it...
ok.mister it's a good advice.
Hmmm... That makes no sense. The call to task_wait should cause an immediate scheduling pass, and some other task should get a full 1ms at that point. When the next scheduling pass happens, your high-priority task will come back in until it calls task_wait again.
Could it be that it's always the same low-priority task that comes in, and all your other low-priority tasks get starved? That should not happen, and I doubt that such a basic bug could survive in the task-scheduler until now, but who knows?
One other thought - how are you calling task_wait? Are you using 0 for the task_id, or are you using an actual task ID? If so, could you be using the wrong task ID? You should probably just use 12.
Also, task_wait takes a signal-mask as an argument. If those signals are already triggered, task_wait may just return immediately without causing a scheduling pass.
If you don't need the signals, you should probably use task_sleep(0,1,4,1,7); instead.
"Hmmm... That makes no sense."
You're dead right there!
What do you think you were replying to...?