... Hint #1; Either use a scope or LED in place of the servo (white wire) to "see" what the P0 output is doing. That helps eliminate some possible hardware...
... These are the questions I come up with: How are you telling the MCU to start at $08FA? What is your bus speed and how did you verify it? Did you calculate...
Could anyone tell me how to load the serial monitor back onto a 9S12C32 MCU using Metrowerks Codewarrior and a P&E BDM. I am familiar with developing C...
Hello everyone, I am just about at the end with my board. I'm just starting out with this chip, and I can't seem to get a simple port-toggler to work using...
Hi All, I'm having trouble with setting the DDRA register. Yes, i know, sounds simple. On reset the value should be 0x00, and i'm even setting it to 0x00...
For example dereferencing uninitialized pointer to long or float could cause this. long *ptr; // unitialized ptr could point to 0 (porta,portb,ddra,ddrb) *ptr...
... For scopeless students it is possible to use a voltmeter. Depending on type and settings it can measure average, peak or RMS. Apart from peak measurement...
I have had some use for a small earphone with small alligator clips, nice to get a quick indication of any activity on e.g pwm signals, RS-232 communication...
Anders Friberg
anders.friberg@...
Feb 6, 2007 9:26 am
14898
check the following: 1-is the polarity of the Pulses correct, e.g. is the (center) 1.5 ms pulse negativ or positive? 2-is the repetition-rate correct (about 20...
Heimes, Horst-Peter
d.heimes@...
Feb 6, 2007 11:40 am
14899
Hi, I am writting a kind of manual for the micro mc9s12dp512, I am using the software of ImageCraft hcs12. It is my first time with microcontrollers and it is...
I have been facing this same problem. I need to learn the ins and outs of programming these chips and I think that Freescale has done a sub par job of...
Hi All,
I must admit that my experience with microcontrollers is mainly limitted to single chip mode, but I have a need to connect a SJA1000 CAN controller...
Haveyou looked at the MCP2551 yet? I use that one and talking to it is easy and hassome nice features in it as well. Might be what you are looking for. Tim ......
Adrian, I have a similar application, however, I use a regular HCS12 micro that has CAN and use a third part USB controller. In my case I use on from FTDI...
Michael Burgess
mburgess@...
Feb 7, 2007 1:55 pm
14905
Here is a good link I used to learn on using the SCI (serial communication interface): http://www.ece.utep.edu/courses/web3376/concepts/c_adc_demo.html I also...
Mohammed El Korek
mohd.elkorek@...
Feb 7, 2007 2:59 pm
14906
... Good stuff, I forgot about that one, although square waves are not very compatible with music:-) Somewhere in my misspent youth, when I was building...
The MCP2551 is a CAN transceiver.... but I need a CAN controller. I believe you may have been referring to the MCP2515 which is a CAN controller with SPI...
I did consider this approach Michael, but I have actually got the USB side of it working very well with the UF32. There is alot of benefit in being able to...
Adrian, Perhaps cost is an issue, but what about using another HC12 as your CAN interface and then interfacing the two HC12's by SPI or SCI? Jonathan. ... ...
Hi, I am using Motorola S12DP256 Microcontroller. I want to know how to write an ISR for external interrupt. I am not able to know want the keyword is to write...
Hi All,
In line with my recent problem with accessing the SJA1000 CAN controller via the expanded memory bus, I have been doing some testing.
I want my main...
In keyword, you mean the ISR function right? Below is an example of an Interrupt that receives a serial character every 1/4800 seconds notice the function...
Mohammed El Korek
mohd.elkorek@...
Feb 8, 2007 6:44 am
14913
... From: Mohammed El Korek <mohd.elkorek@...> Date: Feb 8, 2007 10:44 AM Subject: Re: [68HC12] Interrupt To: 68HC12@yahoogroups.com In keyword, you mean...
Mohammed El Korek
mohd.elkorek@...
Feb 8, 2007 12:07 pm
14914
I actually had a bit of trouble finding a reliable source of information for interfacing RF transceivers to a 68HCS12 using the SPI... the group gave in their...
Mohammed El Korek
mohd.elkorek@...
Feb 8, 2007 12:09 pm
14915
One problem with the original question is that the answer is compiler dependent and the OP did not mention which compiler he is using. The code below is for...
... SJA1000 to ... in ... be ... required ... I don't have experience using the S12 in parallel mode but have a lot of experience with the SJA1000. If the...
... Yeah, and it threw me off when I saw the post here because I just finished answering this exact post in yahoogroup gnu-m68hc11. I answered it there,...
stuff 4 sale updated.... thanks to all who replied, I've made a deal on the CFkit and box(s) of IC's, the FPGA/image kits, the parallax kits, and the AT91 ...
Hey Timbon, how much is the Gyro evaluation kit worth? Name your price... do you ship using UPS or TNT to the United Arab Emirates? Mohammed El Korek American...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
