I have no problem probing either pins on the pierce oscillator configured crystal with 10M ohm oscilloscope probe. If it does not oscillate it's not working or...
If you have a debugger hooked up, you can look at the CRGFLAG register to see if the SCM bit is set. This would indicate that you are in Self Clocked Mode,...
... I have experienced this before but it might not be so with your symptomatic problem but... Seems to be an overcooked SMD crystal thru the reflow oven might...
... I think this is the problem or very close to it. I wrote a program that toggled a pin as Darren suggested and found that in fact the oscillator was way...
... test. ... form ... appnote ... Speaking of ap notes, did you follow the suggested PC board layout? It seems to be fairly critical, because Freescale...
garyolmstead wrote: [...] ... In my opinion and experience the Freescale layout suggestions are not suitable in many cases. I guess that especially devices...
I am running a program on my 68hc12 board and I want to turn on a separate independent program at the same time. How do I tell this 2nd program (temperature...
Bob, ... What puzzles me here is, that you have chosen capacitor values that far apart. The pierce oscillators I have seen so far all had them equal and the...
... The only way to do what you want is to have a third program, a Real Time Operating System (RTOS) running underneath both of your programs. But RTOSs are...
You could set the A/D to do continuous conversions. Then your first program could read the result register at anytime. Of course there would be some time...
... Yes! Asking a question will get more responses that no question! How else can you learn? Your question isn't very specific or detailed, so you will get...
Why can't you make use of a real-time interrupt to obtain a periodic measurement for your temperature sensor? The independant program can run but it is going...
MK
mohd.elkorek@...
Jun 3, 2006 12:35 pm
14065
... As Uwe pointed out, the capacitors you selected are no good for Pierce oscillator. Specifically 1nF capacitor is way too hi for the Pierce oscillator - for...
Doron Fael
doronf@...
Jun 4, 2006 7:52 am
14066
Is is possible to run a program loaded into ram without the serial cable connected? I do not want to use EEPROM. Ex. The program is started with MiniIDE...
It depends on the program itself, are u receiving any values serially from your host (pc) to your minidragon board? I personally had a program that only...
MK
mohd.elkorek@...
Jun 5, 2006 11:33 am
14068
Hi all, I've been working on a MsCAN driver for DP256. I am going over it and I have some questions: The MSCAN Block Guide V02.15 says that TX interrupt must...
Hi, I know how difficult it is to distill the essential bits out of the Freescale MSCAN doc. It is all there, but Freescale doesn't go the extra mile to...
... As a general rule, don't ever acknowledge an interrupt with "X |= X". Always use the form "X = bit_mask". ... Enable the interrupt by setting a flag in the...
the program i have written only seems to work whilst the BDM pod (compod 12 from elektronik laden) is plugged into the target board. Does anyone have any ideas...
1. Check to make sure you have a pullup on reset (or a correct reset driver). 2, Make sure that your startup software disables the watchdog timer. Dave ... ...
yeah i had a look at both of those suggestions, but unfortunately for me i have catered for both of them and the device still does not work in standalone with...
Another consideration is that some reagisters can be written multiple time is Special Mode but not in Normal Mode. Usually, the debugger connection forces...
... I had a similar problem, and it was caused by my code not initializing the SPI interface correctly. The SPISR register needs to be read with the SPTEF bit...
Don't forget to disable watchdog before timing out of its timer, otherwise it will remain in an endless loop. In BDM mode watchdog is initially disabled. ... ...
I have three HC12A4EVBPKLST/D evaluation kits, new, still in the original box. The packing slip lists: Evaluation Board, HC12A4EVB: Qty. 1 User's Manual,...
Dennis Tomlinson
det_werks@...
Jun 11, 2006 1:50 pm
14078
I am wondering of there is a link to a build-yer-own BDM solution for freescale 8-bit micros? I have a few from P&E already, but they are mostly all processor...
Jackie, ... So your trying to characterize an analog value on an LED? sounds like a job for the ADC system on the HC12 ... So, it looks like you need to take...
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