From 761de5a94dd880b37eff3c95c91047a3848754b4 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang.hottgenroth@icloud.com>
Date: Wed, 10 Apr 2024 14:37:20 +0200
Subject: [PATCH] add mute switch

---
 sound-driver/Makefile |  2 +-
 sound-driver/main.c   |  2 ++
 sound-driver/mute.c   | 20 ++++++++++++++++++++
 sound-driver/mute.h   |  8 ++++++++
 sound-driver/spi.c    |  4 ++--
 5 files changed, 33 insertions(+), 3 deletions(-)
 create mode 100644 sound-driver/mute.c
 create mode 100644 sound-driver/mute.h

diff --git a/sound-driver/Makefile b/sound-driver/Makefile
index 31aae1c..6bf22b6 100644
--- a/sound-driver/Makefile
+++ b/sound-driver/Makefile
@@ -11,7 +11,7 @@ CFLAGS=-Wall -mmcu=$(MCU) -std=gnu99 -I $(TOOLCHAIN_PREFIX)/include -O1 -g0
 
 LDFLAGS=-mmcu=$(MCU) -L $(TOOLCHAIN_PREFIX)/include
 
-$(ARTIFACT).elf:	main.o scheduler.o spi.o sequencer.o melody_tetris.o melody_tusch1.o ay_3_8913.o
+$(ARTIFACT).elf:	main.o scheduler.o spi.o sequencer.o melody_tetris.o melody_tusch1.o ay_3_8913.o mute.o
 	$(CC) -o $@ $(LDFLAGS) $^
 	$(OBJDUMP) -D $(ARTIFACT).elf > $(ARTIFACT).txt
 
diff --git a/sound-driver/main.c b/sound-driver/main.c
index f6bcee1..5cb2487 100644
--- a/sound-driver/main.c
+++ b/sound-driver/main.c
@@ -7,6 +7,7 @@
 #include "scheduler.h"
 #include "sequencer.h"
 #include "melody_tetris.h"
+#include "mute.h"
 
 int main() {
   WDTCTL = WDTPW | WDTHOLD;
@@ -24,6 +25,7 @@ int main() {
 
 //  spiInit();
   psgInit();
+  muteInit();
   sequencerInit();
 
   __enable_interrupt();
diff --git a/sound-driver/mute.c b/sound-driver/mute.c
new file mode 100644
index 0000000..1b11ecc
--- /dev/null
+++ b/sound-driver/mute.c
@@ -0,0 +1,20 @@
+#include <msp430g2553.h>
+#include "mute.h"
+
+
+
+void muteInit() {
+  // BIT6: MuteCtrl
+  P1DIR |= BIT6;
+  P1OUT &= ~BIT6;
+}
+
+void mute() {
+  P1OUT |= BIT6;
+}
+
+void unMute() {
+  P1OUT &= ~BIT6;
+}
+
+
diff --git a/sound-driver/mute.h b/sound-driver/mute.h
new file mode 100644
index 0000000..9b27d4b
--- /dev/null
+++ b/sound-driver/mute.h
@@ -0,0 +1,8 @@
+#ifndef _MUTE_H_
+#define _MUTE_H_
+
+void muteInit();
+void mute();
+void unMute();
+
+#endif // _MUTE_H_
diff --git a/sound-driver/spi.c b/sound-driver/spi.c
index e335e6c..53b6d24 100644
--- a/sound-driver/spi.c
+++ b/sound-driver/spi.c
@@ -15,8 +15,8 @@ void spiInit() {
   // BIT5: UCB0CLK
   // BIT6: UCB0SOMI
   // BIT7: UCB0SIMO
-  P1SEL |= BIT4 | BIT5 | BIT6 | BIT7;
-  P1SEL2 |= BIT4 | BIT5 | BIT6 | BIT7;
+  P1SEL |= BIT4 | BIT5 | BIT7;
+  P1SEL2 |= BIT4 | BIT5 | BIT7;
 
   // most significant bit first, enable STE
   UCB0CTL0 = UCSYNC | UCMSB | UCMODE_2;