This document is a specification for how we use USB bridges to interface computers with Spectrometer board configurations that are otherwise designed to "speak" SPI.

In short, our production software expects a very specific setup in order to communicate with SPI spectrometers.

If different SPI setups are required, please contact us and we can coordinate making the connection process more flexible.

#Requirements

To use our software with SPI spectrometers you will need

1) Adafruit FTD232H breakout comms board (https://www.adafruit.com/product/2264) (other boards with the same FTDI chip will likely work but are not tested)

2) FTD2XX_NET (https://www.ftdichip.com/Support/SoftwareExamples/CodeExamples/CSharp/FTD2XX_NET_v1.1.0.zip) and MPSEELight (https://github.com/zhelnio/MPSSELight) Libraries, both freely distributed and included with Wasatch.NET

#Board Wiring (Production)

Our software expects the FTD232H board to be wired for SPI as follows D0: clock D1: MOSI D2: MISO D3: enable

Our software also currently performs a software based external trigger with the following wire setup C0: trigger C1: data ready