topic Re: demo kit DEMOJM differences in 8-bit Microcontrollers

demo kit DEMOJM differences

donw — Thu, 21 Aug 2008 16:05:42 GMT

Does anyone know the difference between the DEMOJM and DEMOJMSKT
evaluation boards? {for the s08JM ]
There is no difference details on the freescale site, and they are the same price.

Has anyone used either of these kits? (I am interested in some details about the USB )

Re: demo kit DEMOJM differences

JimDon — Thu, 21 Aug 2008 19:25:55 GMT

DEMOJM only has the HSC08.
DEMOSKT has the CF V1 JM as well, and comes with a memory stick.
They were not really supposed to be the same price.

Re: demo kit DEMOJM differences

donw — Sat, 23 Aug 2008 06:08:07 GMT

Thanks.
Have you used either of these kits?
This (vague) reply from Freescale Help conflicts with your statement !

The difference between the DEMOJMSKT and the DEMOJM is that the second

one is an improve of the DEMOJMSKT, that's why will be much easier to

find information about it, but both will help you on the develop of your

application with the JM.

My main concern is about what PC software is included for the USB.
I need to be able to interface with the PC's USB port from Visual Basic6
without using a serial com port emulator.

Re: demo kit DEMOJM differences

JimDon — Sat, 23 Aug 2008 07:04:16 GMT

Actually, that is correct, I did reverse the two part numbers. I got them pre-release before they had names. Sorry.

The DEMOJM comes with the V1 chip and the Flash Drive. The SKT used to only be 49.00, don't know what they are thinking making them the same price. Obviously the DEMOJM is a better deal (the SKT does come with a 64 LQFP socket, but it is not that easy to get a chip properly seated).

As for PC side software, it sounds like you want to use a Generic HID device.
No device driver required. For VB6 Hid Examples, you can find that here. Freescale provides no VB6 examples with either kit.

What are your requirements?

Re: demo kit DEMOJM differences

donw — Sun, 24 Aug 2008 15:07:27 GMT

Re USB code:
That link sound exactly like what I want !!
(simple data exchange between PC (VB6) program and target micro system.)
Pity Freescale dont mention it in their datasheets...

Re demo kits:
Would the kit with the socket (DEMOJKSKT) be useful for programming blank IC's before
soldering in target hardware, for cases where the BDM pin is not exposed?
Or does the DEMOJM kit have other advantages of more use/importance??

With either kit, I presume I can extend the BDM wire on the Kit to a target hardware's BDM
to use the kit as a PC to BDM interface?

Re: demo kit DEMOJM differences

JimDon — Sun, 24 Aug 2008 22:59:43 GMT

donw wrote:
Re USB code:
That link sound exactly like what I want !!
(simple data exchange between PC (VB6) program and target micro system.)
Pity Freescale dont mention it in their datasheets...

From a marketing stand point, VB6 is not considered a hot new technology. To be honest, you are the first to mention it. You should really buy that book. It can be had on Amazon used.

Re demo kits:
Would the kit with the socket (DEMOJKSKT) be useful for programming blank IC's before
soldering in target hardware, for cases where the BDM pin is not exposed?

I suppose you could use the socket to program chips, but it is not easy to get the chip in there, and it is really not designed for that. It has come in handy for testing different mask sets, but I never look forward to putting a chip in. Needless to say, the socket is a low cost model.

Or does the DEMOJM kit have other advantages of more use/importance??

If you are interested in the CF V1 and OTG then DEMOJM has a big advantage.

With either kit, I presume I can extend the BDM wire on the Kit to a target hardware's BDM
to use the kit as a PC to BDM interface?

Yes.

You still have not said what the requirements of you application are.

Re: demo kit DEMOJM differences

donw — Mon, 25 Aug 2008 09:32:16 GMT

Looks like the DEMOJM is the one to go with.
My end application is a data logger, I need to move 2Mbyte of data from a '908GP32 based data logger's flash via USB into a PC file.
The current design uses a FDTI 232 to implement the USB (to serial port) in the logger.
It work well but I am hoping that the s08JMxx micro will allow faster USB transfer.
[the FDTI is limited to 38Kbaud, due to the 'GP32 Vcc of 3v3)
Maybe I can use USB Bulk Transfer mode ?

-Re VB6: Maybe not new, but stable (ie I know all the workarounds I need to know), and it does
all that I require! I can't justify the learning curve of VBNet... (or maybe its just an age related thing ! reluctance to do more head-banging to figure out all the quirks of VBNet..)

Re: demo kit DEMOJM differences

JimDon — Mon, 25 Aug 2008 18:04:13 GMT

Using Generic HID you can get 64K Bytes per second which equals 640K Baud.

- I would not suggest you consider VB.NET - however C# seems to be a good, if your user base can tolerate a .NET framework install. It's worth the leraning curve.