In SX Microcontrollers, SX/B Compiler and SX-Key Tool, maxwin wrote:

Jon.. I understand your logic now... he he he... Must try harder!  :p

Sparks.. yes the power pins are all connected. Thanks for checking.


I have some news... I built a vero board SX-28 / MCP3202 using almost the same code and connections as from the SX-Tech board. The only connections difference was that I used 2 extra SX pins pulled high/low for vdd/vss supply to the 3202, which made the layout neater.

And yes it works fine. Very good resolution and stability, especially considering the lack of filter caps and ground plane. This is what I wanted to see, and it has proven to me well worth implementing on projects requiring greater than 255 step resolution - which the SX can handle very well itself using ANALOGIN and a careful pcb layout.


So it would seem the problem all along MAY have been the SX-Tech, or at least Microchip being fussy. As I said, I had metered out the connections and tried wiggling cables etc.. etc.. Not a peak. And I just tried the Tech again - still not happening.. Oh well, I will order a new Tech board tomorrow and see if that solves it. Curiosity must be satisfied!


Thanks again JonnyMac. I really appreciate your time building a circuit to help me eliminate the code problem and focus attention towards hardware. Now, get back to the book!!!

Best regards  - Max.

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