topic Re: QG4/8 Quick Start Guide here in 8-bit Microcontrollers

QG4/8 Quick Start Guide here

hightech — Tue, 28 Mar 2006 05:34:59 GMT

Here is the QG4/8 Quick Start Tips for everyone. Your feedback is welcome.

MC9S08QG4-8_Quick_Start_Tips1.pdf

Message Edited by dkindler on 2009-08-19 11:13 PM

Re: QG4/8 Quick Start Guide here

alex_spotw — Tue, 28 Mar 2006 22:52:48 GMT

Hi:

Very nice guide!

Thank you.

Regards,

Alex

Re: QG4/8 Quick Start Guide here

irob — Wed, 29 Mar 2006 02:35:17 GMT

Nice document, thanks!

I notice that you include the VDD pin on the BDM connector. I've read in the part datasheet that this is not required, inteded for powering your BDM pod from target power. This isn't necessary for the BDM interface to work if the pod is self-powered right?

Re: QG4/8 Quick Start Guide here

peg — Wed, 29 Mar 2006 04:51:52 GMT

Hi Rob,

The power on the BDM header usually powers the level converted, target side, BDM connection circuitry of the adapter. Even though the bulk of the adapter is powered by the USB or whatever.

BR Peg

Message Edited by peg on 03-29-200606:53 AM

Re: QG4/8 Quick Start Guide here

irob — Wed, 29 Mar 2006 05:01:36 GMT

Dumb question - what programmer are you using? I've got a PE Micro Cyclone Pro which has a BDM option. I've also got a DEMO9S08 with the optional BDM header, neither of which work for me.

Should I be using the BDM Multilink? I've got an open SR with PE and they promised to send me newer software with better QG8 support. We'll see.

Re: QG4/8 Quick Start Guide here

peg — Wed, 29 Mar 2006 05:18:49 GMT

Hi Rob,

I have been following your troubles both here and at P&E but I haven't been able to assist because I have got a P&E USB Multilink and the **bleep** thing just works so I haven't learned a lot about it.

I have also been looking into making the open source BDM so I know the circuit there. The P&E handles different target voltages and has a LED that only comes on when target power is present so I presume it is similar.

Peg

Re: QG4/8 Quick Start Guide here

irob — Wed, 29 Mar 2006 06:59:43 GMT

Peg, are you using the PKGHCS08-USB with an HC9S08QGx part? We're using the QFN-16 version of a QG8 and a Cylcone.

Just want to be sure what combination of equipment you're using.

Re: QG4/8 Quick Start Guide here

peg — Wed, 29 Mar 2006 07:26:55 GMT

Rob,

I have only used my USB-ML-12 to talk to GB/GT devices. I will be talking to QG's if Freescale ever get around to sending me some.

Peg

P.S. Don't ever try to discuss sock repair here or you will get bleeped!!!

Message Edited by peg on 03-29-200609:28 AM

Re: QG4/8 Quick Start Guide here

Alban — Wed, 05 Apr 2006 23:02:47 GMT

Cheers Hightech,

I put your guide in highlight for a while so more peeps can see it !

Alban.

Re: QG4/8 Quick Start Guide here

hightech — Thu, 06 Apr 2006 21:47:38 GMT

I have attached with this message the Codewarrior examples that are referenced in the quick start guide.

QG8_Quick_Start_Examples.zip

Message Edited by dkindler on 2009-08-19 11:20 PM

Re: QG4/8 Quick Start Guide here

irob — Fri, 07 Apr 2006 01:15:29 GMT

For the BDM interface section, I would highly recommend a link to the recommended wiring PDF from Freescale.

That said, Freescale will need to update their connection recommendations in light of recent debugging I've been doing with local and factory FAEs.

See this forum for more info.

Re: QG4/8 Quick Start Guide here

abcdef1 — Wed, 19 Apr 2006 07:56:27 GMT

Nice document, thanks!

Re: QG4/8 Quick Start Guide here

Boost — Thu, 20 Apr 2006 00:22:30 GMT

Hi, I'm new to this wonderful hobby and am having an issue with the ACMP function for a QG8 based application. Using Hitec's Q.S. ACMP code sample, when compiling, I get: ERROR,C1815, Unasigned variable (or typename).associated with ADC_val_H and ADC_val_L. As a newbie, Im sure there is a simple fix for this error. Would apreciate assistance to this matter. Also need to configure an output control line from the comparater using a pressure sensor on the +In side. Thank You for any help on this.

I am also having the same problem that New kidd is having is there a fix?

Message Edited by Boost on 04-19-200612:28 PM

Re: QG4/8 Quick Start Guide here

airswit — Sat, 13 May 2006 10:40:33 GMT

could you maybe include something about how to use this as a keypad controller? i.e. debouncing, and maybe using it for a matrix keypad controller? I havn't started with this controller yet, but I wouldn't mind using this rather then a dedicated keypad controller.

The guide is pretty good though, gave me a nice quick intro to what these little guys can do!

Re: QG4/8 Quick Start Guide here

peg — Sat, 13 May 2006 10:54:02 GMT

Hi,

Still chasing some matrix keypad info, huh.

I use one based on the example in M68HC05AG/AD Rev. 1, don't know if its still here as I have one made from a tree.

Its part of the full application which is a home thermostat. Doesn't use KBI but may help you to get started with some basic concepts (Oh dear there is that word again).

Regards Peg

Re: QG4/8 Quick Start Guide here

airswit — Sun, 14 May 2006 02:13:41 GMT

wow, that is actually pretty easy to accomplish. however, is there perhaps a way to do it so that the whole process doesn't take 100ms, or so? what i mean is that, is there some way to be able to execute other code while the keys are being debounced? I think i can find 8 pins on my main processor (MCF5213) to set up a keypad interface, but i have more important things to do, also. I was thinking of maybe setting up a PIT to scan the keys every so often, but don't want to sit in the ISR for 1/10 of a second!

p.s. thanks for the link, peg!

Message Edited by airswit on 05-13-200602:17 PM

Re: QG4/8 Quick Start Guide here

airswit — Sun, 14 May 2006 07:05:53 GMT

is it possible to use the development board to program the 8 pin devices (rather than have to buy the bdm cable)?

also, i don't think it is, but is it possible to use another micro (MCF5213) to program one of these micros, without having to write a ton of software?

Re: QG4/8 Quick Start Guide here

irob — Mon, 15 May 2006 22:54:45 GMT

airswit wrote:
wow, that is actually pretty easy to accomplish. however, is there perhaps a way to do it so that the whole process doesn't take 100ms, or so?

p.s. thanks for the link, peg!

Peg, I'd like to find that sample code myself, but couldn't find any "x68HC05Ax" anywhere on Freescale, or Google for that matter. Can you post a link to that datasheet?

airswit, I'm not sure how involved the keypad scanner code is, but perhaps you could use a looping state machine instead of an ISR. The advantage of the FSM is that you can slice up all the debounce and logic timing. I find FSMs to be much easier to debug too. You'll always know where your program is if something goes wrong.

Re: QG4/8 Quick Start Guide here

peg — Tue, 16 May 2006 05:18:16 GMT

Hi Rob,

As I said the link is the top shelf of my bookcase, but I found this on the C8A page:

http://www.freescale.com/files/microcontrollers/doc/ref_manual/M68HC05AG.pdf

I did not wait for it to download though.

The delays aren't a problem in my application although I am using 15ms which was discovered to work OK accidently. A calculation mistake to change the sample code to suit my bus freq. gave this and it was not discovered until many years later when I changed the product from 05C8A to 08GP32 with a new bus freq. that required the delay to be recalculated. So I just kept the wrong delay. I am using good quality Rafi keyswitches though.

Regards Peg

Message Edited by peg on 05-16-200608:25 AM

Re: QG4/8 Quick Start Guide here

airswit — Thu, 03 Aug 2006 12:44:03 GMT

will it be okay to hook the AC line right to a digital input through a resistor, as suggested in the guide? also, will it detect the negative->positive crossing as well? i am wondering if i can do this on my main processor (MCF5213) rather than use dedicated zero cross circuitry. I'm wondering, also, whether it would be safer/easier/more accurate to put the ac line on an A/D input, and use a zero crossing function (built in on the MCF5213) to see when it crosses zero. any help appreciated!

Trevor