Discussion in "ARM Development" started by    saurabh rawat    Oct 4, 2007.
Thu Oct 04 2007, 01:38 pm
#1
Quick picture of the problem :
I want to do the code optimization for my driver rouitine, esp the interrupt handler section.in short i want to make a check on the interrupt latency , i want to make the latency period as short as possible,
..............................so any pointers...to how to do?what to do?
I believe that if we can start rrite away from the ARM assly code only, trying to reduce the number of instruction, something lik that..??..will be opf great help..!!
Ajay --Shyam...i am looking uotp you guys..!!


Thu Oct 04 2007, 02:46 pm
#2
sure.............
ur problem is a general kinda....
give us a greater detail............
may be we can help.......... :-)
what interrupt source u are using........
what is optimisation capability of ur compiler.....

please do let us know abt the compiler u r using......
this is request foe everyone of u posting ur problems here... :-)
Fri Oct 05 2007, 02:33 pm
#3
oh soory for being so implicit..
ur problem is a general kinda....ya seems like
give us a greater detail............
may be we can help..........
what interrupt source u are using........i have actually made a setup called "loop back" in which i am trying to send the data frm on TX UART port and simulataneoulsy recieveing it at the RX Uart port, so source is not a big problem....i can do it from the hyperterminal also but then i will be using another PC.for it...
what is optimisation capability of ur compiler.....
please do let us know abt the compiler u r using......
i am using the armcc compiler with 03 level optimization (with -Ospace option ignored i mean i am cocerned with speed at this time not memory)..

this is request foe everyone of u posting ur problems here...

so now my aim is to know the interrupt latency period while serving the interrupts.......!!
so how cud i arrive fir the best possible optimzation keeping the sanity of the driver in mind...!!
the lesser it is better wud be the driver...
i hope I am quiet explicit this time
lemmem know if u require me to thorow light on some other areas..1!


Thanks
Saurabh
Fri Oct 05 2007, 09:47 pm
#4
all right saurabh.....
i'll make a programme accordingly......
test and debug it for the best speed possible... and give u the best configuration for ur code ...
hope u wont mind waiting a little longer.. cause a little busy a couple of days... :-)

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