Manchester coding question

[skimask]

I just want to confirm my code, am I using the GE Thomas Convention where "1" is "10" or am I using the IEEE convention where "1" is "01" because it seems like I'm encoding it the IEEE convention way but at serout I invert it so it becomes the GE Thomas Convention.

I wouldn't think it would matter a whole lot as long as you're using the same thing at both ends. And if the TX and RX like one combo better than the other, well, there ya go... Can't really say for sure, I haven't tried both ways.

[oneohthree]

I know that it is working and that it doesn't really matter but I want to check my oscilloscope readings correspond with the correct convention.

[languer]

I would like to know the technical reason why I am using manchester coding and $55 as the preamble.

Well, this is sure a strange question. I would think you would know why you are using it, since you have it in your code. I think the link rhino provided is good. But if you absolutley must know and have no clue why it is in your code, I would look at http://www.ottawarobotics.org/articles/rf/rf.html.

I know that it is working and that it doesn't really matter but I want to check my oscilloscope readings correspond with the correct convention.

Another strange one, how about using MPLAB (or the simulator of your choice) and see how the code runs. Then, compare this to what you see in the oscilloscope and see what happens. They should match, and you should be able to tell how the bits are done and how the code treats them.

I agree with skimask, I do not think it matters (as long as it is the same in both TX and RX).

[mychangl]

Just wonder, when we use manchester code ?
:-P

[Ioannis]

Have you read any of the above replies?

Have you visited the links?

If you did and did not understood anything, come back to ask. The link http://www.ottawarobotics.org/articles/rf/rf.html at the 2.1 MANCHESTER ENCODING - The art of balancing a serial stream discusses a lot...

Ioannis

[Ioannis]

Have you read any of the above replies?

Have you visited the links?

If you did and did not understood anything, come back to ask. The link http://www.ottawarobotics.org/articles/rf/rf.html at the 2.1 MANCHESTER ENCODING - The art of balancing a serial stream discusses a lot...

Ioannis