Hi everyone I'm having some problem with starting cancelling timers. ... TimerControlBlock timer1; AvrXStartTimer(&timer1, 4); AvrXCancelTimer(&timer1); ...
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Larry Barello
lbarello
Jul 4, 2003 2:09 pm
I reviewed BasicTest3.c which exercises the timer subsystem and your particular test case (queueing/cancelling/queueing a single time on the queue) is not...
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pippopappopippopappo
pippopappopi...
Jul 4, 2003 3:22 pm
Hi Larry I post only these lines because my code is simply an exercise that start from BasicTest3.c. I noted that BasicTest3.c works in the same manner when...
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Larry Barello
lbarello
Jul 4, 2003 3:57 pm
Wow, it must have been a year since I last compiled and ran the test cases. Amazingly enough they did compile and run. Pippo: I am not seeing the problem you...
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pippopappopippopappo
pippopappopi...
Jul 8, 2003 9:29 am
Hi Larry Currently I'm in holiday. When I come back at home I'll send you everything Bye Pippo ... test cases. Amazingly ... works for me under GCC. ... if it...
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pippopappopippopappo
pippopappopi...
Jul 14, 2003 1:23 pm
Hi again Larry, I come back from holiday 8(( I tried BasicTest3 under GCC and it works fine: therefore the problem is IAR related. I remember that I modified...
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Larry Barello
lbarello
Jul 14, 2003 1:58 pm
Yes, the file AvrX.inc needs to agree with avrx-ctoasm.inc The former defines offsets into the stack layout of the saved context and if you change registers...
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Jean Cyr
jeanmcyr
Jul 15, 2003 5:05 am
Is it ok to call AvrXCancelTimer from within an interrupt timer. If not, how do I do it??? Seems to work most of the time, but eventually I lose a task that...
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Larry Barello
lbarello
Jul 15, 2003 5:53 am
Although CancelTimer was never intended to be called from an interrupt routine it should work. There may be some subtle race condition that occurs inside timer...
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pippopappopippopappo
pippopappopi...
Jul 15, 2003 8:35 am
Hi Larry I found the problem: in the newer version of IAR the calling convetions are changed, but there is an option to tell the compiler to use the previous...
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Jean Cyr
jeanmcyr
Jul 15, 2003 12:58 pm
Yes, the 'lost' task is actually hung on a timer that never seems to expire. This all came about when the need arose to have an interrupt driven serial IO...
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Jean Cyr
jeanmcyr
Jul 15, 2003 1:28 pm
And I would add that when the problem occurs, it is just the 'hung' task that is affected. The other task using a time continues to function just fine. Its...
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pippopappopippopappo
pippopappopi...
Jul 15, 2003 2:18 pm
Although I restored the previous parameters, the program does not work. But I noted that I used the avrx_tasking.s file modified by Steve Krepelka (downloaded...
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Krepelka, Steve
steve_krepelka
Jul 15, 2003 5:00 pm
Hi Pippo, The INTERFACE definition in header file avrx.h forces the IAR compiler to use the old ICCA90 calling convention for all AvrX function calls. The ...
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Larry Barello
lbarello
Jul 16, 2003 3:42 am
Having timeouts on interrupt handlers is something I never solved for AvrX. Your solution seems pretty nice: use the cancel timer function to "signal" the...
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pippopappopippopappo
pippopappopi...
Jul 16, 2003 10:46 am
Many thanks Steve If you have some news I'll wait for you on this group. Bye Pippo ... compiler to ... The ... assembly ... compiler ... with other ... had ......
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getsmedown2000
Jul 16, 2003 10:29 pm
I replaced the code in task2 in the timers example (timer.c) with that below and commented out the monitor task line in main(). When I run it in VMLAB I see...
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Larry Barello
lbarello
Jul 17, 2003 1:56 am
It has been a long time since I wrote AvrX so I might not have this right. However, looking over the Timerqueue code I have a counting semaphore to allow the...
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codejunky2000
Aug 9, 2003 2:02 pm
I'm new to this group, and I'm sure this is old news, but just in case... It looks like there's a small error in the header.h file in the Examples directory....
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Larry Barello
lbarello
Aug 14, 2003 2:33 pm
I wrote AvrX quite some time ago when all I had was the Atmel assembler and a 2313. It was all about minimizing resources used. If it were changed to C the...
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dlh2612000
Aug 15, 2003 12:41 pm
I have an application where I will be using I2C for communication between four Mega128 boards. I have this working under AvrX on the bench between two boards...
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Brian Cuthie
codejunky2000
Aug 15, 2003 12:59 pm
Dave, This seems like a particularly scary thing to do. Have you considered just bit-banging the I2C stuff yourself? About all you're using in hardware at this...
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dlh2612000
Aug 15, 2003 1:19 pm
Brian, That is certainly an option, but I'd still like to find out why I can't get external interrupts working. Even if I end up rolling my own I2C as you...
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Larry Barello
lbarello
Aug 15, 2003 3:37 pm
The file "avrx-signal.h" is hopelessly out of date with the latest 3.3 compiler: the interrupt vectors are not right and you never get to your INT3 handler....
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Neil Johnson
nej22uk
Aug 15, 2003 3:46 pm
... I can confirm Larry's advice. I am using external interrupts on an ... #include <avr/signal.h> #include <avr/interrupt.h> ... SIGNAL( SIG_INTERRUPT1 ) { ...
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dlh2612000
Aug 15, 2003 4:50 pm
Thanks Larry / Neil! I'll give that a try when I get home tonight. I was hoping it was something like this. Dave...
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ss_4344
Aug 25, 2003 12:55 pm
I've been building an application that makes use of AvrXYield to cooperatively multi-task three processes at the same priority, and have been experiencing...
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dariuszpr
Aug 26, 2003 7:54 am
Here is correct version of AvrXYield (in file "avrx_reschedule.s"). There is missing BeginCritical section. AvrXYield: AVRX_Prolog ldi Zl,...
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steve.saunders@...
ss_4344
Aug 26, 2003 10:05 am
Problem solved. I should have asked two weeks ago... :-/ Many thanks. "dariuszpr" <prugarda@...> 26/08/2003 17:53 Please respond to avrx To:...
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sebbos
Aug 27, 2003 2:26 pm
When I try to use putChar() or getChar() is the compiler complaining that the functions have undefined references, aren't they defined in the library avrx.a?...
