From 6c832eeb88167696e9c320cbf5d38e74a1d34ad1 Mon Sep 17 00:00:00 2001
From: hg <devnull@localhost>
Date: Sun, 31 Aug 2014 18:29:46 +0200
Subject: [PATCH] changes

---
 src/uart.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/uart.cpp b/src/uart.cpp
index c092d61..06c3559 100644
--- a/src/uart.cpp
+++ b/src/uart.cpp
@@ -27,16 +27,16 @@ static inline void disableDataRegisterEmptyInterrupt() {
 void uartInit() {
   UCA0CTL1 |= UCSWRST;
 
-  P1SEL = BIT1 + BIT2;
-  P1SEL2 = BIT1 + BIT2;
+  P1SEL = BIT1 + BIT2;  // select secondary function TX, RX
+  P1SEL2 = BIT1 + BIT2; // dti
 
   UCA0CTL0 |= UCPEN | UCPAR; // even parity
   UCA0CTL1 |= UCSSEL0; // ACLK
 
-  UCA0BR0 = 13;
+  UCA0BR0 = 13; // divider for 2400@32768
   UCA0BR1 = 0;
 
-  UCA0MCTL = UCBRS1 | UCBRS2;
+  UCA0MCTL = UCBRS1 | UCBRS2; // modulator for 2400@32768
 
   UCA0CTL1 &= ~UCSWRST;