pins_energia.h change SPI to USCIB0 to USCI A0

[svdoshi 0]

Hey Guys,

I am new user of Energia. Currently, I am using MSP430G2553 chip to write data in SD card.  I found code that works on USCIB0 SPI communication. Here is the link   for the code. This code works completely fine. But, I wanted to know how can I change the code to use USCIA0 SPI instead of USCIB0 to do this?

 

I tried going into pins_energia.h and just changing the pins. But it didn't work. Can anybody help me with this problem?

 

Here is port assignment for different SPI buses 

USCIB0: (Code is using it)

 P1.6 -> master in slave out (MISO)

 P1.7 -> master out slave in (MOSI)

 P1.4 -> slave transit enable

 P1.5 -> clock input

 

USCIA0: (This is what we want to use)

 P1.1 -> master in slave out (MISO)

 P1.2 -> master out slave in (MOSI)

 P1.5 -> slave transit enable

 P1.4 -> clock input

[spirilis 1,265]

SPI library's own code needs to change to reference UCA0xxxx registers instead.  It's a bit messy.

[svdoshi 0]

Ohh ok.  SPI libraries means SPI.h and usci_spi.cpp? Do you think it's possible tho?

[spirilis 1,265]

Oh yeah it's possible.  You'll have to maintain your own version of the SPI library across future revisions of Energia, etc. to use it.