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HydraDive
07-21-2009, 09:13 AM
OK, So I really hate that my first post is probably so obvious but here goes. Since this is my first post a little background might be in order I am an Electronics Tech on UAV's & ROV's for the military, but the only programming I have ever done was on a Fanuc robotic arm for about 6 months. I have just started with Propeller today and am using the PPDB as the backbone of my learning. I just tried to get started with the first Spin example (Blinking an LED 5 times).

http://forums.parallax.com/forums/default.aspx?f=25&m=113109

One statement it makes is "IT IS ASSUMED THAT ONE LED IS CORRECTLY CONNECTED TO PORT A16". So what I am trying to figure out is where or what is port a16? I can guess it being maybe the breadboard location A16 or maybe pin16 of the Propeller chip. I am sure this will not be the worst question I ask but rest assured once I start to grasp something I really take off hopefully this will be the case here.
Thanks in advance, Terry

JonnyMac
07-21-2009, 09:18 AM
A16 (chip designation) is actually marked P16 on the board; you'll find it on the top side of the breadboard between the chip (all of the IOs are here). Run a piece of 22-guage solid wire between P16 and one of the LEDs on the right edge of the board and you'll be good to go.

HydraDive
07-21-2009, 09:23 AM
Thanks, that was what I was leaning towards but would hate to mess something up on the first try.

w8an
07-21-2009, 09:29 AM
Hydradrive,

I'm in a similar boat as you... new to the Propeller. I'm not new to microcontrollers nor programming but I know how important familiarity is with the devices you are learning to work with. Tho I haven't actually done any prototyping just yet, I have found two invaluable references and I have been poring over them in anticipation of receiving my first Propeller chip toy.

I would highly recommend you go to: http://www.parallax.com/tabid/442/Default.aspx which is the Parallax Propeller download page. These two downloadable docs would be a great reference for you...

Propeller Manual v1.1
Book - Propeller Education Kit Labs: Fundamentals

..Steve

SRLM
07-21-2009, 10:05 AM
The PropI architecture was designed to be expandable to 64 I/O pins (A port is 0-31, B port is 32-63). Parallax decided not to go that route, but some of the older documentation still references the A/B differences.

HydraDive
07-21-2009, 11:18 AM
SRLM thanks for the explanation about the A/B. I always like to know those extra bits of info. Well I got my blinking LED so I must have done something right. I think I might hold of until the morning for more since all I had was Cat5 for wire and I believe its about 26AWG and doesn't fit very well. Thanks again to everyone this is by far the most active forum I have ever been part of.

Nick Mueller
07-21-2009, 06:10 PM
> Well I got my blinking LED so ...

I fear nobody has warned you. :-(
When the first blinkenLED makes you feel happy and pround, you are already lost. Addicted to µCs.


Nick

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