Hello for information.
I work in this moment for data logger. I need 2 SPI port (LCD and SD) and 1 I2C port (sensors). I Use TI MSP430FR5994 Launchpad.
With Energia E18, impossible to use SCL (2), SDA (2), pin 9 and 10. (I need Pin 14,15 for I2C/SPI LCD, and I need Pin 48, 50 already connected on SD connector in launchpad),
1) don't forget to setup I2C module number: Wire.setModule(2);
2) modify Pins_Energia.h as describe bellow in \Local\Energia15\packages\energia\hardware\msp430\1.0.3\variants\MSP-EXP430FR5994LP
(see link in Energia