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Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Search Results for "ect"
Reg code to compute wheel speed using Enhanced Capture Timer
saravanan - Jan 25 2008
Hi friends,
Has any one has computed the wheel speed using ECT. If so can you
please send me the code.
Thanks in advance,
Sarvoo
... 
Re: Timer Capture Interrupts Please Help
Edward Karpicz - May 17 2007
you wrote:
> Hello,
> I've been trying to figure this out for some time now and think I'm having
> a little trouble with the concept in addition to some other details.
> ... Re: RF transceiver ideas
x_t_a_n_g_e_n_t_3 - Dec 20 2006
Dear Mohammed El Korek.
You probably wonder why you may be so reluctant to interface you're
transceiver into a Minidragon+ board. I have never used the
minidragon+ board si... Re: Forget interrupt? [3 Articles]
Edward Karpicz - Dec 8 2006
Pascal wrote:
> Hello Edward,
>
> I could have an interrupt during 0.1ms
> I believed that if an interrupt occur the micro can not forget it. But
> with your answer i ... Re: Re: OC function for S12DP256B
Shane Shepherd - Nov 4 2006
why is the output compare more accurate then the rti function. If you remember my problem I was trying to store bits in serially through a port and store the eight bit values in ... Re: RTI function for S12DP256B
Jefferson Smith - Nov 3 2006
--- In 6...@yahoogroups.com, Shane Shepherd wrote:
> Can you explain the output compare for me
===== Here is something I've written recently =======
General Use of Time... RE: MC9S12DP256B security
Tim Milliken - Aug 8 2006
Jean,
My susgestion is to 1) Use the backdoor key to place it in an unsecured state 2) have a "watchdog" type func that if (current tick count - last tick count) > = your preset... Re: Re: I2C question?? [5 Articles]
Edward Karpicz - May 12 2006
"michael_c_elphick" wrote:
> --- In 6...@yahoogroups.com, "elalex_76" wrote:
> >
> > Hello, i had been trying to work with MC9S12DP256B board and SRF08
> > sensor that... 32 bit Interrupt timer on PT0, 9s12dg128 [4 Articles]
blewis999 - Mar 24 2006
I have a working 16 bit timer but now find that at low freq's we are
getting overflow so I need to go to a 32 bit timer interrupt driven.
Of course the ECT is 16 bit, so is th... XGATE?? [15 Articles]
Adrian Vos - Feb 22 2006
Hi All,
I am in need of more output compare style ECT outputs than the standard S12
supports. I was thinking that I could achieve this by dedicating one
standard OC channel t... Re: Unwanted output compare on 9S12DT128 [2 Articles]
Andy - Feb 4 2006
They're trying to cover this bug up in their .pdf for
the ECT. If you read section 4.2.4 of their ECT pdf,
it says
The pins associated with channels 0-6 become output-tied to ... Re: Getting the Pulse Accumulator working
microcodefun - Aug 25 2005
Hi Adlai,
Especially the PWM subsystem is a tricky one to setup due to all the
clock configurations. If you'd like to save some time, you can use
Driver2Go ( http://ww... RE: Reset event debug [2 Articles]
Longworth, Kevin - May 23 2005
I think I found a way, I am using a redirected interrupt table in ram
(because the bootloader I have to use does), so I filled that part of
RAM with 0, a BGND instruction wh... RE: How to use HC12's ECT as a general purpose Timer? [2 Articles]
Mark Wyman - May 18 2005
Ok, I am going to take a leap here based on the other postings:
Set up an accurate single timer interrupt, at your least common denominator
of time slices, say 10mS... Re: How to use HC12's ECT as a general purpose Timer? [2 Articles]
Salvador Tenorio - May 18 2005
You can use the free running counter as your "tick" generator and
configure it to suit your needs (lets say to roll over every 1ms).
When the timer expires have it generat... Re: Re: How to use HC12's ECT as a general purpose Timer? [2 Articles]
Uwe Arends - May 18 2005
Amr,
> > > I know that modulus counter can achieve this task but for only one
> > > channel. What if I need more than one channel, e.g. eight channels?
> >
> > well... Re: How to use HC12's ECT as a general purpose Timer?
Michael Elphick - May 18 2005
Amr,
From the expression 'general purpose timer', it is
is difficult to know what it is you are after.
The RTI can operate several timers, but what
period and reso... Clocks of the ECT module
panikjahn - May 6 2005
Hello Everybody!
I have a MC9S12DG256 controller and I'm trying to setup the ECT module.
I studied the manual and now, I'm a little bit confused:
I've read the S12ECT16... ECT - Pulse accu / Holding register 'double buffer mechanisms' [5 Articles]
christian_theiss_2003 - Jan 19 2005
Hey you guys,
...does anybody have an idea how the 'holding register'(H.R.)
mechanism is working in the right way for configuring the ECT timer
subsystem ... Re: Interrupt from PH port
Edward Karpicz - Dec 24 2004
> Hi,
>
> Problem concerns the service of interrupts from PH port.
>
> I have 2 independents sources of events.
> On the beginnig I've tested service of this ... Re: resolution for PWM driven servo on HCS12 [5 Articles]
Jefferson Smith - Oct 8 2004
Perhaps I could write a big picture of ECT (Enhanced Capture Timer
module), having used it extensively for servos.
Probably my biggest advantage to using the ... Re: Re: Use PORTT as input/output and timer [2 Articles]
Edward Karpicz - Aug 10 2004
From: "Pascal" Need help with modulus down counter [2 Articles]
Daniel White - Jul 1 2004
Anyone out there that has experience with the modulus down counter on the
S12?
Section 3.3.29 of the S12 ECT block user guide (S12ECT16B8V1.pdf) describes
the ... Re: ***[Possible UCE]*** Re: Where to start?
Sydney Faria - Apr 9 2004
I lot of very good info has been posted for Kerry & I will add my $.02.
Since you are just starting out you will need help, which means that there
will be a need fo... Keypad is fine LCD still trouble. I have more details. [3 Articles]
cubddh2003 - Mar 20 2004
For my LCD, I tie the contrast brightness pin 3 to ground. Im pretty
sure this is fine. I know all my signals are connected properly.
When i write a character to ... Re: S12DP256 and the ECT [3 Articles]
Edward Karpicz - Jan 31 2004
---- Original Message -----
From: "jb_tempe_jb" <>
> My problem is that I can't write anything to the MCCNT register... the
> ECT datasheet says, and I quote,... Re: Debuging with P&E USB MULTILINK & Codewarrior 3
Gilles Blanquin - Jan 22 2004
Hello Robert.
We will provide this feature for sure in the next release.
Meanwhile, some modules like the ECT timer (DP256) can be freezed when
stepping. ... About use of OC7M, OC7D, CFORC registers
Velislav Panayotov - Jan 20 2004
Hi all,
Excuse me for the long message, but I want to give you
possibly more information about my problem.
In an old 68HC11A0 project I had to control the 4... Re: (unknown) [4 Articles]
Steve Russell - Dec 22 2003
Tim,
Suggestions:
Whatever code you write, define a constant for the clock period or
frequency, and use a formula for the magic numbers that you have to put ... RE: Digest Number 492
Lewis, Bob - Sep 25 2003
Julian,
I am not sure that we have the same problem but here is what I experienced
that seems similar to what you are doing.
I was using the ECT for double... HCS12 + ECT [2 Articles]
M.B. - Sep 2 2003
Where I can find any sample code for simple use ECT ?
I have to count short time, but I don't know how use this timer (in
interrupt).
regards
Mariusz
... Re: PWM , no output
punning_clan - Aug 18 2003
Hi Tim.
Here is the setup code that finally worked:
// Choose high polarity
PWMPOL = PWMPOL | 0xFF;
// Chose SA/SB Clocks
PWMCLK = PWMCLK | 0xFF;
... Input Capture register access in ECT
teleko7 - Jul 17 2003
Hi.
I´m working with a 9s12dp256 and trying to build in a polaroid´s
ultrasonic transducer, working with the ECT module. But when I try to
copy Input Capture... RE: Single stepping executes timer interrupt [3 Articles]
Erich Styger - May 5 2003
Hello Ruben,
on Processor Expert below:
In the CPU bean there are properties that allow to configure the behavior of
the on-chip modules, also it the timers shoul...