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Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Search Results for "spi"
Controlling a Servo with the HC12? [9 Articles]
defe...@gmail.com - Nov 20 2009
Hello,
I am trying to control a Parallax Continuous Rotation Servo (#900-00008) using my MC9S12C128CFUE. I need to to use PWM to give a pulse 1.5ms(rest), 1.3ms (clockwise), and... 
Re: timer ports, ping ultrasonic sensors + dragon bored 12
Carl Barnes - Nov 11 2009
You'll find some CW examples for 9S12DP512 here:
http://support.technologicalarts.ca/docs/Adapt9S12DP/Code/C/CW%20Examples%2=
0for%20DP512/
There are examples for I2C, SPI... RE: HCS12 SCI Flash Programming Help
jpdi - Nov 6 2009
Hi,
Below, the vector interrupt table I use for DP256...
Note the address I put it is 0xff80, not 0xef80...
I use ICC12 too, and it run OK for interrupt.
When I used DP256, I... Re: Re: Please Help...Programming Assitance Needed with Dragon12
=?ISO-8859-1?Q?Ruben_J=F6nsson?= - Apr 24 2009
In addition to this, the relay should not directly be driven from the MCU I/O
pin. You need to drive it with a transistor. The easiest way to do that is to
have an NPN transist... comparing 9S12 and S12X to Microchip PIC18 [5 Articles]
Carl Ungvarsky - Apr 16 2009
Hi,
I have a design that currently uses a Microchip PIC18 MCU. I need to do a m=
ajor revision of the design and I have the choice to go to the next larger =
PIC series, the... Senior design project
maram_aljishi - Mar 23 2009
Hello all,
I am working on my senior design project ( American University of Sharjah), and part of it is interfacing an accelerometer to the HC12 using SPI.
I have connected the ... Problem with SPI bus in XIRQ interrupt
ymliao - Mar 4 2009
Hi!
I use MC9S12E128 micro in my application, and XIRQ interrupt to handle power fail.
In the XIRQ interrupt, I need to save data to memory via the SPI bus. And I notice that... SBCTool Development Kit
linktek - Jan 11 2009
Used SBCTool ColdFire development kit for sale - buy online at ....
http://www.linkteksystems.com/linkshop/index.php?main_page=product_info&cPath=1&products_id=94
This is a b... is anyone interested in an open source board? [3 Articles]
Steve Letkeman - Jan 5 2009
I designed the following board last year with some ideas for some home
automation projects and have never really gotten around to them. I was
wondering if there would be any i... Re: Why does enabling Real Time Interrupt on S12XD hork the system?
David Armstrong - Dec 22 2008
Thanks John for your reply.
First of all, an Interrupt Handler for spurious interrupts really can't ack
or disable the interrupt source, since the interrupt source is Unknown.
... Re: force port S to output all '0'
Angel Castillo - Jul 5 2008
You don=B4t need any mosfet for controll led
you may controll with direct conecct to pin ports with
resistor 330 or 470 ohms.
i think you program is correct
maybe your prob... RE: Analog converter protection
=?ISO-8859-1?Q?Ruben_J=F6nsson?= - Apr 24 2008
I usually do like this for protecting circuits connected to external
components:
Terminal - Emi filter - resistor - tranzorb - resistor - ic pin
Emi filter both blocks nois... HC12 and SD card [2 Articles]
adeshere - Apr 15 2008
Hi,
I am trying to talk to an SD card via SPI.
I can set up the card and read the CSD CSI registers.
BUT
When i read data from sector 0, i get the FF 00 to indicate tha... MMC/Sd CARD Interface [2 Articles]
jehenzeb2978 - Feb 24 2008
Hi All,
I am going to interface MMC/Sd card with 9S12DP256B.
If someone has done this task already, then please send me the low
level routines in SPI Mode.
Thanx
Mi... Re: SPI with PNI V2XE
lane...@gmail.com - Nov 27 2007
I have the exact same problem using an MSP430 board. Any help would be greatly appreciated.
>
>
>
> I am using PNI's Vector 2XE compass with a DP256B. This device u... sample codes on ATD,SCI, SPI, TIMER MODULE
Mallikarjun Reddy - Nov 20 2007
Hi,
Can I know where I can get the detail information on the basic steps
to write program for the interrupt in C? Any sample code as a reference?
Basically, I will use SCI, ... Re: sample codes on ATD,SCI, SPI, TIMER MODULE
=?ISO-8859-1?Q?Ruben_J=F6nsson?= - Nov 19 2007
Hello,
For this matter I have had good use of the free Codewarrior with Processor
Expert and its Beans.
It lets you define your peripheral hardware and/or software function... Hi
Mallikarjun Reddy - Nov 19 2007
Hi,
Can I know where I can get the detail information on the basic steps
to write program for the interrupt in C? Any sample code as a reference?
Basically, I will use SCI, ... Can SPI read a 16 bits data set?
ly_haw - Nov 15 2007
Hi,
I am using 9S12DP256 microcontroller for my school project. In this
project, I need to read a 16 bits SPI data from a device. As I know,
the microcontroller SPI data re... Can SPI read a 16 bits data set? [2 Articles]
ly_h...@yahoo.com - Nov 14 2007
Hi,
I am using MC9S12DP256 microcontroller for my school project. In this
project, I need to read a 16 bits SPI data from a device. As I know,
the microcontroller SPI data ... Re: does anybody know what happened to this company?
joncas04 - Oct 19 2007
There is also a very well crafted FREE fat16-fat32 implementation:
http://elm-chan.org/fsw/ff/00index_e.html
Not for the HCS12 specifically, but all one needs to add is the
de... Re: reading data from SD card on UF32
joncas04 - Sep 24 2007
If you can advance so far as to be able to read and write single
sectors from the SD card via the SPI interface, then you can use the
FAT32 code created by ChaN:
http://elm-ch... Connecting a Graphical Lcd to a HCS12E256 via SPI
zaheer - Sep 19 2007
Hi Guys,
I want to connect a Graphical Lcd to a HCS12E256 via SPI.
The Lcd that i am using is a Samsung device S6B0724.
If any of you guys have done this previously please wil... Re: Re: spi debuging problem
bailao - Sep 7 2007
Hi,
I have try your approach,but it dose not work.
Bailao
======== 2007-09-05 19:31:00 您在来信中写道： ========
Hi,
I've also had some problem with SPI (my prog has ... Re: code for ia4420
ratk...@gmail.com - Aug 10 2007
Hy,
I'm newbie here and some weeks ago I had the same problem with IA4420. The problem was with the nSEL, because I use an AT MEGA8 and it has a 8 bit SPI and the IA4420 uses ... ia4420 problem
=?ISO-8859-1?Q?R=E1tkai_Zolt=E1n?= - Aug 10 2007
Hy,
I'm newbie here and some weeks ago I had the same problem with IA4420.
The problem was with the nSEL, because I use an AT MEGA8 and it has a
8 bit SPI and the IA4420 uses ... Re: code for ia4420
ratk...@gmail.com - Aug 10 2007
Hy,
I'm newbie here and some weeks ago I had the same problem with IA4420. The problem was with the nSEL, because I use an AT MEGA8 and it has a 8 bit SPI and the IA4420 uses ... S12D/E pad layout [2 Articles]
"James M. Knox" - Jul 18 2007
I've used the 912D60A for years. It's time to move up to something
better - and that appears to be something like the S12D64 or the
S12E64. [All I really need is reasonable... Problem with spi clock [9 Articles]
Pascal - Jun 4 2007
Hello,
I use 9s12xdpa512. Fbus is 40Mhz. I use spi clock at maximum frequency (spibr=0). In my case the frequency is 20MHz. My card is four plane.
When i put the scope on the s... Re: LCD assistance
robm...@web.net - Apr 19 2007
You don't specify but I assume you are referring to a typical 14pin lcd
module powered by a Hitachi HD44780 driver chip. If by serial you are
referring to the SPI, it isn't diff... Log2Phy Issue????
bkmo...@jlg.com - Apr 13 2007
Hi all,
I've got bootloaders written for the DP256(B) and DP512 MCUs. I was
testing downloading to all of the pages by org'ing a test string at the
beginning and end o... Bluetooth modules
Mohammed El Korek - Apr 4 2007
Hello,
I am looking at a Bluetooth OEM module called the KC-21. This module has a
24 pin IC which allows interfacing options to an SPI and a UART (SCI in
hcs12 terms).
I wa... Re: URGENT! temperature sensor
robm...@web.net - Apr 3 2007
I don't think you can beat an spi/ic solution for quickness and
convenience. I used a maxim chip for this little NE64 server at
http://temp.web.net that checks the ac in a ser... Fwd: A little help
Mohammed El Korek - Feb 8 2007
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 suggestions earlier... Re: S12 External bus question [2 Articles]
Adrian Vos - Feb 7 2007
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 interface. Unfortunate... Re: Question SD CARD [3 Articles]
Peter Lissenburg - Jan 11 2007
I have not worked on this for a while, but I will be soon. From memory, I did
find some cards that would work OK in a PC card reader, and yet behave this way
in SPI mode. My ex... Re: RF transceiver ideas [2 Articles]
=?UTF-8?B?Wm9sdMOhbiBLw7Njc2k=?= - Dec 19 2006
On Tue, 19 Dec 2006 18:47:35 +0400
"Mohammed El Korek" wrote:
> Hello everyone,
>
> I am just beginning to look into the possibility of interfacing an RF
> transceiv... External Memory Capabilities of the HC12 [7 Articles]
zajaco2 - Nov 15 2006
Hello,
I am relatively new to the 68HC12 (about 5 months) and I'm using it in a
project that I've been working on. I know that the 68HC12 has an external
addressing scheme ...