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Luke Z's Content

There have been 5 items by Luke Z (Search limited from 28-April 23)


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#34373 Trackball Serial Communication

Posted by Luke Z on 29 August 2012 - 02:36 PM in Netduino 2 (and Netduino 1)

Looks like those 232 to TTL converters I mentioned are working perfectly. only using one pin, but it works well. Thanks for everyones help.


#34037 Trackball Serial Communication

Posted by Luke Z on 21 August 2012 - 11:56 PM in Netduino 2 (and Netduino 1)

Thanks to all, I see what you are all getting at and that makes perfect sence. I have ordered a couple of these, http://www.robotshop...-adapter-5.html I hope these will fix the issue. I will report back with more.


#34025 Trackball Serial Communication

Posted by Luke Z on 21 August 2012 - 05:13 PM in Netduino 2 (and Netduino 1)

Went through something similar a while back - was getting predictable, repeatable but wrong values back. My issue was not having the correct level shifter - what are you using?


I'm using this level shifter:

https://www.sparkfun.com/products/8745

This is what I mean by 5byte:

http://www.kryslix.com/nsfaq/Q.12.html
The 5 byte Mouse Systems packet section.


#33971 Netduino Firmware v4.2.0

Posted by Luke Z on 20 August 2012 - 09:02 PM in Netduino 2 (and Netduino 1)

Not sure if I'm the only one, just updated to 4.2 and now when I deploy a project it hangs when trying to enter the debugging state. It seems to deploy ok, but then gives the "The debugging target is not in an initialized state; rebooting..." message and hangs. Have to power cycle to get it to respond.


#33960 Trackball Serial Communication

Posted by Luke Z on 20 August 2012 - 06:35 PM in Netduino 2 (and Netduino 1)

Ok, so I have a 5byte serial trackball attached through a level converter to my netduino on port 2. The trackball is hard wired for 1200 baud. I seem to be getting dropped bits. For example Hyperterminal on my pc shows: Left click: 131 -> 10000011 Right click: 134 -> 10000110 Debug output from the netduino shows: Left click: 62 -> 111110 Right click: 158 -> 10011110 Is 1200 baud too slow? Do I have messy edges on my serial and need to pull them up or down? Help!



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