From cab0b7009b00c78c7726dc24ff1b7c91227465fe Mon Sep 17 00:00:00 2001
From: Pat Thoyts <patthoyts@users.sourceforge.net>
Date: Sat, 6 Dec 2014 18:07:30 +0000
Subject: [PATCH] Moved clock coil control pins to P1.6 and P1.7 and removed
 LED.

This matches the constructed perfboard circuit layout.
---
 Makefile |  7 +++++--
 main.c   | 16 ++++++++--------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index d46acdc..6049ba5 100644
--- a/Makefile
+++ b/Makefile
@@ -3,15 +3,18 @@ CC    = msp430-gcc
 CFLAGS=-Wall -g -Os -mmcu=$(MCU)
 LDFLAGS=
 
+all: main.elf
+
 main.elf: main.c
 	$(CC) $(CFLAGS) -o $@ $<
 
 %.o: %.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
-prog: program
 program: main.elf
 	MCU=$(MCU) mspdebug rf2500 "prog $<"
 
 clean:
-	rm -f main.elf
+	-rm -f main.elf
+
+.PHONY: clean program
diff --git a/main.c b/main.c
index 85ce41f..b18e3f8 100644
--- a/main.c
+++ b/main.c
@@ -3,17 +3,17 @@
 #include <stdint.h>
 #include <stdlib.h>
 
-#define LED0 BIT0 /* P1.0 */
-#define CLKP BIT1 /* P1.1 */
-#define CLKN BIT2 /* P1.2 */
+//#define LED0 BIT0 /* P1.0 */
+#define CLKP BIT6 /* P1.6 */
+#define CLKN BIT7 /* P1.7 */
 
 static void
-init_leds(void)
+setup(void)
 {
     //P1DIR |= LED0 | CLKP | CLKN; /* set P1.0,P1.1,P1.2 as output */
     //P1OUT |= LED0 | CLKP | CLKN; /* set P1.0,P1.1,P1.2 low */
     P1DIR = 0xff; /* set P1.* to output for reduced power consumption */
-    P1OUT = LED0 | CLKP | CLKN;
+    P1OUT = CLKP | CLKN;
     
     /* set the counter to match on 511 which is 1s for 32kHz/8/8 (timer
      * re-divides the interrupt clock by 8 */
@@ -35,7 +35,7 @@ main(void)
     BCSCTL3 |= XCAP_3; /* enable 12.5pF internal capacitance */
     
     srand(0xf00d);
-    init_leds();
+    setup();
 
     /* enable global interrupts */
     eint();
@@ -64,7 +64,7 @@ TIMERA0_ISR(void)
     /* if driving the stepper coil, stop after 32ms (1 interrupt) */
     if (state == State_Driving) {
         state = State_Wait;
-        P1OUT &= ~(CLKP | CLKN | LED0);
+        P1OUT &= ~(CLKP | CLKN);
     }
     
     if (count == 32) {
@@ -76,7 +76,7 @@ TIMERA0_ISR(void)
         --offset;
         if (offset == 0) {
             state = State_Driving;
-            P1OUT |= pin_pos | LED0;
+            P1OUT |= pin_pos;
             P1OUT &= ~pin_neg;
             /* swap the pins for the next tick */
             uint8_t t = pin_pos;
-- 
2.23.0