Tuesday, November 16, 2004

Received NE64 Demo

after going around the block with fedex, I got the NE64 Demo kit from Freescale. Everything seems to be there, including some plugs for the 'universal power adapter' to fit power from the north pole. I've never seen one of the connectors before. I'm thinking it may make a good hood ornament.

The kit includes a cross over cable that has a sticker on it that says 'corss over'. I got a good laugh outa that.

The finish on the Demo is VERY good. a nice little plastic box that is silkscreened. from my cursory inspection and going through the first demo the box has 3 push buttons, one toggle switch, one pot, 2 red LEDS, and a green LED that comes on with power. the one thing you can't tell from the pictures is that the PCB is double sided. I haven't taken the box apart to admire the board yet, but it looks quite nice through the semi transparent case. The ethernet plug is the type that has the LEDs embedded in it. there is a DB9 connector for serial in, and a 2x20? header for GPIO expansion.

I haven't fired up the programming software yet but I was able to ping the box. you have to set your computer to some IP and then you can ping it. that kind of confused me but it must be that your IP has to be close to the one in the box so the subnet mask works.. thats all I can come up with after thinking about it for 20-30 seconds.

Downsides?
Yup... it seems witht he serial (goes through SCI line?) you are a little limited on the programming abilities. there is a warning that if the unit gets corrupted then you will need a BDM, back ground mode debugger (not supplied) to reprogram it. I think there is a programming mode that is supported through the serial connection but if you destroy the serial loader program then I assume you need lower level access. arg.. now I gotta make sure I can recover if, I mean When, I screw it up, or build a BDM.

links:
HC12 Resources
AN1230 has a BDM schematic!
GDB with BDM

1 comment:

gunzz said...

happy to see that the demo board has arrived....keep me in the loop about your progress....will be watching your site for updates....