2017 VNA Design Notes

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Hardware

The I2C pins SDA (P6.4) and SCL (P6.5) are used to communicate with the SI5351A. The jumpers J2 and J3 are set for 3.3V operation like this. The pinout for the MSP-EXP432P401R for Energia (arduino) applications on using this launchpad on this page helped me figure this out. The I2C pins are the same on our board's design.

Software

These are notes so I don't forget what I needed to do to get things working for the software on the 2017 VNA project.

Notes on ADC14

The examples were helpful, but I needed a TA0 triggered multiple sequence convert. The last problem to get fixed was toggling the AD14ENC bit after each sequence.

Notes on the SI5351A

I decided to use the Energia tools and the Arduino Etherkit SI5351A library to more quickly get the embedded software going. I think I will be able to combine this with a library I write for the ADC14 so that the users can just manipulate .ino files.

Code Composer Studio Setup for Energia on Ubuntu 17.04 (64 Bit)

I downloaded the energia package using the CCS App center. Then I had to run the energia software (not from CCS) and use the Tools->Board->Boards Manager to install the MSP432 energia arduino libraries. I downloaded both MSP432 (red and black) libraries. Then, because energia was compiled for 32 bit machines, I had to: 

sudo apt-get install libc6:i386 libx11-6:i386 libasound2:i386 libatk1.0-0:i386 libcairo2:i386 libcups2:i386 libdbus-glib-1-2:i386 libgconf-2-4:i386 libgdk-pixbuf2.0-0:i386 libgtk-3-0:i386 libice6:i386 libncurses5:i386 libsm6:i386 liborbit2:i386 libudev1:i386 libusb-0.1-4:i386 libstdc++6:i386 libxt6:i386 libxtst6:i386 libgnomeui-0:i386 libusb-1.0-0-dev:i386 libcanberra-gtk-module:i386

I was then able to program and load the Blink example on the MSP432 board with energia. Lastly I had to in CCSV7, go to Window->Preferences->Code Composer Studio->Build->Compilers and Add a link to the compiler which was at: ~/.energia15/packages/energia/tools/arm-none-eabi-gcc/4.8.4-20140725/bin After that I was able to use CCSV7, which allows debugging.

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