Foot switch project GUI software design

Oscilloscope Communication Uses VISA protocol for scope communication. – Common on Tektronix Oscilloscope platforms. – Commands are published by Tektronix in the form of Programmers manual for each oscilloscope family. – Test and Measurement Industry standard.

VISA

PC / USB communication For communication to the PC, USB interface was used. – Made easy in the form of a dedicated USB bridge and dll libraries for the device “SimpleIO-UM.dll” device in conjunction with MCP2200 python module, developed in house. – Unnecessary to deal with USB Stack.

GUI behavior Python used for GUI development. – PyVisa 1.3 Scope communication – Wxpython GUI development – Numpy Curve data calculation – ScopeControl Use PyVisa to send interpreted commands – MCP2200 Communicate with PC over USB. “SimpleIO-UM.dll”

Polling

Interface layout Tabs for each function – Tab dedicated to each button – Double Click – Scope connection / file placement – Script entry

Results / Lessons learned What worked well – Engineers at Tektronix have been impressed. What didn’t work – We were unable to get USB ports configured as COM port, - Adjustment routine dropped as a result. – Should have made silk screen larger / readable. – Post size was same as.632, same size as screws.