sound effects, not yet working

display-driver/main.c

@@ -76,7 +76,7 @@ int main() {
   P1SEL |= BIT4 | BIT5 | BIT6 | BIT7;
   P1SEL2 |= BIT4 | BIT5 | BIT6 | BIT7;
   // most significant bit first, enable STE
-  UCB0CTL0 = UCCKPH | UCSYNC | UCMSB | UCMODE_2;
+  UCB0CTL0 = UCSYNC | UCMSB | UCMODE_2;
   UCB0CTL1 = 0x00;
   // enable RX interrupt
   UC0IE |= UCB0RXIE;

game-ctrl/Makefile

@@ -7,11 +7,11 @@ MCU=msp430g2553
 CFLAGS=-Wall -mmcu=$(MCU) -std=gnu99 -I $(TOOLCHAIN_PREFIX)/include -O1 -g0
 
 # for debugging
-CFLAGS+= -g3 -ggdb -gdwarf-2
+#CFLAGS+= -g3 -ggdb -gdwarf-2
 
 LDFLAGS=-mmcu=$(MCU) -L $(TOOLCHAIN_PREFIX)/include
 
-$(ARTIFACT).elf:	main.o spi.o scheduler.o canvas.o shapes.o game.o buttons.o myrand.o display.o sound.o eeprom.o
+$(ARTIFACT).elf:	main.o spi.o scheduler.o canvas.o shapes.o game.o buttons.o myrand.o display.o sound.o
 	$(CC) -o $@ $(LDFLAGS) $^
 	$(OBJDUMP) -D $(ARTIFACT).elf > $(ARTIFACT).txt
 

game-ctrl/buttons.c

@@ -10,8 +10,6 @@
 #include "sound.h"
 
 
-bool mutedFlag = true;
-
 static uint8_t buttonsMoveLeftPressed() {
   static uint8_t last = 0;
   uint8_t current = (P2IN & BIT4);
@@ -51,6 +49,7 @@ static uint8_t buttonsMoveDownPressed() {
 void buttonsExec(void *handle) {
   static uint32_t unmuteTimestamp;
   uint32_t currentTimestamp = getSeconds();
+  static bool unmuteFlag = true;
 
 
   if (! stoneIsValid()) {
@@ -89,16 +88,16 @@ void buttonsExec(void *handle) {
   if (buttonPressed == 1) {
     canvasShow();
 
-    if (mutedFlag) {
+    if (! unmuteFlag) {
       soundCtrl(SOUND_UNMUTE);
-      mutedFlag = false;
+      unmuteFlag = true;
     }
     unmuteTimestamp = currentTimestamp;
   }
 
-  if ((! mutedFlag) && (unmuteTimestamp + MUTE_DELAY < currentTimestamp)) {
+  if (unmuteFlag && (unmuteTimestamp + MUTE_DELAY < currentTimestamp)) {
     soundCtrl(SOUND_MUTE);
-    mutedFlag = true;
+    unmuteFlag = false;
   }
 }
 
@@ -108,7 +107,3 @@ void buttonsInit() {
   schAdd(buttonsExec, NULL, 0, 25);
 }
 
-bool isGameActive() {
-  return ! mutedFlag;
-}
-

game-ctrl/buttons.h

@@ -1,10 +1,7 @@
 #ifndef _BUTTONS_H_
 #define _BUTTONS_H_
 
-#include <stdbool.h>
-
 void buttonsInit();
-bool isGameActive();
 
 
 #endif // _BUTTONS_H_

game-ctrl/eeprom.c

@@ -1,75 +0,0 @@
-#include <stdint.h>
-#include "eeprom.h"
-#include "spi.h"
-
-
-#define MAGIC 0xaffe
-#define HIGHSCORE_ADDR 0x00
-#define DUMMY 0x00
-#define CMD_READ  0b00000011
-#define CMD_WRITE 0b00000010
-#define CMD_WRDI  0b00000100
-#define CMD_WREN  0b00000110
-
-
-typedef union {
-  uint8_t buffer[4];
-  struct {
-    uint16_t magic;
-    uint16_t highScore;
-  } v;
-} eepromBuf_t;
-
-eepromBuf_t buf;
-
-static void writeBuf() {
-  spiSendBegin(e_SPI_EEPROM);
-  spiSendOctet(CMD_WREN);
-  spiSendEnd(e_SPI_EEPROM);
-
-  spiSendBegin(e_SPI_EEPROM);
-  spiSendOctet(CMD_WRITE);
-  spiSendOctet(HIGHSCORE_ADDR);
-  spiSendOctet(buf.buffer[0]);
-  spiSendOctet(buf.buffer[1]);
-  spiSendOctet(buf.buffer[2]);
-  spiSendOctet(buf.buffer[3]);
-  spiSendEnd(e_SPI_EEPROM);
-}
-
-static void readBuf() {
-  spiSendBegin(e_SPI_EEPROM);
-  spiSendOctet(CMD_READ);
-  spiReceiveOctet();
-  spiSendOctet(HIGHSCORE_ADDR);
-  spiReceiveOctet();
-  spiSendOctet(DUMMY);
-  buf.buffer[0] = spiReceiveOctet();
-  spiSendOctet(DUMMY);
-  buf.buffer[1] = spiReceiveOctet();
-  spiSendOctet(DUMMY);
-  buf.buffer[2] = spiReceiveOctet();
-  spiSendOctet(DUMMY);
-  buf.buffer[3] = spiReceiveOctet();
-  spiSendEnd(e_SPI_EEPROM);
-}
-
-void eepromInit() {
-  readBuf();
-
-  if (buf.v.magic != MAGIC) {
-    buf.v.magic = MAGIC;
-    buf.v.highScore = 0;
-    writeBuf();
-  }
-}
-
-uint16_t eepromReadHighScore() {
-  return buf.v.highScore;
-}
-
-void eepromWriteHighScore(uint16_t v) {
-  buf.v.highScore = v;
-  writeBuf();
-}
-

game-ctrl/eeprom.h

@@ -1,13 +0,0 @@
-#ifndef _EEPROM_H_
-#define _EEPROM_H_
-
-#include <stdint.h>
-
-
-void eepromInit();
-uint16_t eepromReadHighScore();
-void eepromWriteHighScore(uint16_t v);
-
-
-
-#endif // _EEPROM_H_

game-ctrl/game.c

@@ -8,8 +8,6 @@
 #include "../rgb-driver/colors.h"
 #include "display.h"
 #include "sound.h"
-#include "eeprom.h"
-#include "buttons.h"
 
 
 #define GAME_CYCLE_TIME 100
@@ -37,7 +35,6 @@ void gameExec(void *handle) {
   static uint8_t proceedDelay;
   static uint8_t level;
   static uint16_t score;
-  static bool newHighScoreAchieved;
 
 // --- engine begin -------------------------------------------------------
   switch (state) {
@@ -47,7 +44,7 @@ void gameExec(void *handle) {
       soundCtrl(SOUND_START);
       level = 1;
       score = 0;
-      newHighScoreAchieved = false;
+      displaySetValue(score);
       phase = e_Phase_Game;
       state = e_NewStone;
       break;
@@ -94,7 +91,7 @@ void gameExec(void *handle) {
 
     case e_GameOverFill:
       rowIndex--;
-      canvasFillRow(rowIndex, newHighScoreAchieved ? _green : _red);
+      canvasFillRow(rowIndex, _red);
       if (rowIndex == 0) {
         state = e_GameOverWipe;
       }
@@ -124,10 +121,6 @@ void gameExec(void *handle) {
     for (uint8_t r = 0; r < CANVAS_HEIGHT; r++) {
       if (canvasIsRowFilled(r)) {
         score += level;
-        if (score > eepromReadHighScore()) {
-          newHighScoreAchieved = true;
-          eepromWriteHighScore(score);
-        }
         displaySetValue(score);
         canvasWipeRow(r);
         canvasShow();
@@ -138,12 +131,6 @@ void gameExec(void *handle) {
       soundCtrl(SOUND_FANFARE); 
     }
   }
-
-  if (isGameActive()) {
-    displaySetValue(score);
-  } else {
-    displaySetValue(eepromReadHighScore());
-  }
 }
 
 void gameInit() {

game-ctrl/main.c

@@ -12,7 +12,6 @@
 #include "myrand.h"
 #include "spi.h"
 #include "display.h"
-#include "eeprom.h"
 
 
 int main() {
@@ -29,7 +28,6 @@ int main() {
     schInit();
 
     spiInit();
-    eepromInit();
     displayInit();
     myRandInit();
     canvasInit();

game-ctrl/spi.c

@@ -3,7 +3,7 @@
 
 void spiInit() {
   // SPI in master mode, most significant bit first
-  UCB0CTL0 = UCCKPH | UCMST | UCMSB;
+  UCB0CTL0 = UCMST | UCMSB;
   // SPI timing config
   UCB0CTL1 = UCSSEL_3;
   // Faster than 8 ends up in strange communication errors
@@ -19,25 +19,25 @@ void spiInit() {
   // BIT7: UCB0SIMO
   P1SEL |= BIT5 | BIT6 | BIT7;
   P1SEL2 |= BIT5 | BIT6 | BIT7;
-  // P1DIR |= BIT5 | BIT7;
+  P1DIR |= BIT5 | BIT7;
 
-  // Device Select Lines: 0: Canvas, 1: Display, 2: Sound, 4: EEPROM
-  P1DIR |= BIT0 | BIT1 | BIT2 | BIT4;
+  // Device Select Lines: 0: Canvas, 1: Display, 2: Sound
+  P1DIR |= BIT0 | BIT1 | BIT2;
   // Disable all of them
-  P1OUT |= BIT0 | BIT1 | BIT2 | BIT4;
+  P1OUT |= BIT0 | BIT1 | BIT2;
 
   // enable SPI module
   UCB0CTL1 &= ~UCSWRST;
 }
 
 void spiSendBegin(t_SpiDeviceSelector d) {
-  uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2, BIT4 })[d];
+  uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2 })[d];
   P1OUT &= ~bit;
 }
 
 void spiSendEnd(t_SpiDeviceSelector d) {
   while (UCB0STAT & UCBUSY);
-  uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2, BIT4 })[d];
+  uint16_t bit = ((uint16_t[]){ BIT0, BIT1, BIT2 })[d];
   P1OUT |= bit;
 }
 
@@ -48,9 +48,3 @@ void spiSendOctet(uint8_t v) {
   UCB0TXBUF = v;
 }
 
-uint8_t spiReceiveOctet() {
-  while (!(UC0IFG & UCB0RXIFG));
-  uint8_t v = UCB0RXBUF;
-  return v;
-}
-

game-ctrl/spi.h

@@ -4,13 +4,12 @@
 #include <stdint.h>
 
 
-typedef enum { e_SPI_CANVAS, e_SPI_DISPLAY, e_SPI_SOUND, e_SPI_EEPROM } t_SpiDeviceSelector;
+typedef enum { e_SPI_CANVAS, e_SPI_DISPLAY, e_SPI_SOUND } t_SpiDeviceSelector;
 
 void spiInit();
 void spiSendBegin(t_SpiDeviceSelector d);
 void spiSendEnd(t_SpiDeviceSelector d);
 void spiSendOctet(uint8_t v); 
-uint8_t spiReceiveOctet();
 
 
 

rgb-driver/main.S

@@ -123,7 +123,7 @@ init:
 
   ;; spi configuration
   ;;  USCI B to slave mode, enable STE and most significant bit first
-  mov.b   #UCCKPH|UCSYNC|UCMODE_2|UCMSB, &UCB0CTL0
+  mov.b   #UCSYNC|UCMODE_2|UCMSB, &UCB0CTL0
   mov.b   #0x00, &UCB0CTL1
 
   ;; make sure the isr will not immediately start

sound-driver/Makefile

@@ -13,7 +13,7 @@ CFLAGS+= -g3 -ggdb -gdwarf-2
 
 LDFLAGS=-mmcu=$(MCU) -L $(TOOLCHAIN_PREFIX)/include
 
-$(ARTIFACT).elf:	main.o scheduler.o spi.o spi_init.o sequencer.o melody_tetris.o melody_tusch1.o psg.o mute.o
+$(ARTIFACT).elf:	main.o scheduler.o spi.o spi_init.o sequencer.o melody_tetris.o melody_tusch1.o ay_3_8913.o mute.o effects.o
 	$(CC) -o $@ $(LDFLAGS) $^
 	$(OBJDUMP) -D $(ARTIFACT).elf > $(ARTIFACT).txt
 

sound-driver/ay_3_8913.c

@@ -27,35 +27,6 @@ const uint16_t frequencyCodes[8][12] = {
 #define _CS0 BIT2
 #define _CS1 BIT0
 
-#define R0 0
-#define CHANNEL_A_TONE_PERIOD_FINE_REG R0
-#define R1 1
-#define CHANNEL_A_TONE_PERIOD_COARSE_REG R1
-#define R2 2
-#define CHANNEL_B_TONE_PERIOD_FINE_REG R2
-#define R3 3
-#define CHANNEL_B_TONE_PERIOD_COARSE_REG R3
-#define R4 4
-#define CHANNEL_C_TONE_PERIOD_FINE_REG R4
-#define R5 5
-#define CHANNEL_C_TONE_PERIOD_COARSE_REG R5
-#define R6 6
-#define NOISE_PERIOD_REG R6
-#define R7 7
-#define _ENABLE_REG R7
-#define R10 010
-#define CHANNEL_A_AMPLITUDE_REG R10
-#define R11 011
-#define CHANNEL_B_AMPLITUDE_REG R11
-#define R12 012
-#define CHANNEL_C_AMPLITUDE_REG R12
-#define R13 013
-#define ENVELOPE_PERIOD_FINE_REG R13
-#define R14 014
-#define ENVELOPE_PERIOD_COARSE_REG R13
-#define R15 015
-#define ENVELOPE_SHAPE_REG R15
-
 uint8_t psgShadowRegisters[2][14];
 
 inline static void BUS_OP_NACT() {
@@ -94,11 +65,11 @@ asm volatile (
 }
 #endif
 
-static uint8_t psgReadShadow(uint8_t chip, uint8_t address) {
+uint8_t psgReadShadow(uint8_t chip, uint8_t address) {
   return psgShadowRegisters[chip][address];
 }
 
-static void psgWrite(uint8_t chip, uint8_t address, uint8_t data) {
+void psgWrite(uint8_t chip, uint8_t address, uint8_t data) {
   psgShadowRegisters[chip][address] = data;
 
   // according to "State Timing" (p. 15) of datasheet

sound-driver/effects.c

@@ -0,0 +1,18 @@
+#include "effects.h"
+#include "psg.h"
+
+
+void effectsInit() {
+
+}
+
+
+void playEffect1() {
+  psgWrite(1, NOISE_PERIOD_REG, 0);
+  psgWrite(1, _ENABLE_REG, psgReadShadow(1, _ENABLE_REG) & ~0b00111000);
+  psgWrite(1, CHANNEL_A_AMPLITUDE_REG, 020);
+  psgWrite(1, CHANNEL_B_AMPLITUDE_REG, 020);
+  psgWrite(1, CHANNEL_C_AMPLITUDE_REG, 020);
+  psgWrite(1, ENVELOPE_PERIOD_COARSE_REG, 070);
+  psgWrite(1, ENVELOPE_SHAPE_REG, 0);
+}

sound-driver/effects.h

@@ -0,0 +1,9 @@
+#ifndef _EFFECTS_H_
+#define _EFFECTS_H_
+
+
+void effectsInit();
+
+
+
+#endif // _EFFECTS_H_

sound-driver/main.c

@@ -9,6 +9,7 @@
 #include "melody_tetris.h"
 #include "melody_tusch1.h"
 #include "mute.h"
+#include "effects.h"
 
 int main() {
   WDTCTL = WDTPW | WDTHOLD;
@@ -28,11 +29,10 @@ int main() {
   psgInit();
   muteInit();
   sequencerInit();
+  effectsInit();
 
   __enable_interrupt();
 
-  // playMelodyTetris();
-
   while (1) {
     schExec();
   }

sound-driver/mute.c

@@ -6,9 +6,7 @@
 void muteInit() {
   // BIT6: MuteCtrl
   P1DIR |= BIT6;
-
-  // initially, mute
-  P1OUT |= BIT6;
+  P1OUT &= ~BIT6;
 }
 
 void mute() {

sound-driver/psg.h

@@ -36,11 +36,41 @@ typedef enum {
 #define e_As e_Gis
 #define e_B e_Ais
 
+#define R0 0
+#define CHANNEL_A_TONE_PERIOD_FINE_REG R0
+#define R1 1
+#define CHANNEL_A_TONE_PERIOD_COARSE_REG R1
+#define R2 2
+#define CHANNEL_B_TONE_PERIOD_FINE_REG R2
+#define R3 3
+#define CHANNEL_B_TONE_PERIOD_COARSE_REG R3
+#define R4 4
+#define CHANNEL_C_TONE_PERIOD_FINE_REG R4
+#define R5 5
+#define CHANNEL_C_TONE_PERIOD_COARSE_REG R5
+#define R6 6
+#define NOISE_PERIOD_REG R6
+#define R7 7
+#define _ENABLE_REG R7
+#define R10 010
+#define CHANNEL_A_AMPLITUDE_REG R10
+#define R11 011
+#define CHANNEL_B_AMPLITUDE_REG R11
+#define R12 012
+#define CHANNEL_C_AMPLITUDE_REG R12
+#define R13 013
+#define ENVELOPE_PERIOD_FINE_REG R13
+#define R14 014
+#define ENVELOPE_PERIOD_COARSE_REG R13
+#define R15 015
+#define ENVELOPE_SHAPE_REG R15
+
 
 void psgInit();
 
 void psgPlayTone(uint8_t chip, uint8_t channel, uint8_t volume, t_octave octave, t_note note);
 void psgAmplitude(uint8_t chip, uint8_t channel, uint8_t volume);
-
+uint8_t psgReadShadow(uint8_t chip, uint8_t address);
+void psgWrite(uint8_t chip, uint8_t address, uint8_t data);
 
 #endif // _PSG_H_

sound-driver/sn76489an.c

@@ -0,0 +1,171 @@
+#include <msp430g2553.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "psg.h"
+#include "scheduler.h"
+
+
+// generated using utils/calc-76489an.py
+const uint16_t frequencyCodes[8][12] = {
+  { 3420, 3229, 3047, 2876, 2715, 2562, 2419, 2283, 2155, 2034, 1920, 1812 }, 
+  { 1710, 1614, 1524, 1438, 1357, 1281, 1209, 1141, 1077, 1017, 960, 906 }, 
+  { 855, 807, 762, 719, 679, 641, 605, 571, 539, 508, 480, 453 }, 
+  { 428, 404, 381, 360, 339, 320, 302, 285, 269, 254, 240, 226 }, 
+  { 214, 202, 190, 180, 170, 160, 151, 143, 135, 127, 120, 113 }, 
+  { 107, 101, 95, 90, 85, 80, 76, 71, 67, 64, 60, 57 }, 
+  { 53, 50, 48, 45, 42, 40, 38, 36, 34, 32, 30, 28 }, 
+  { 27, 25, 24, 22, 21, 20, 19, 18, 17, 16, 15, 14 }
+};
+
+
+#define ADDR_DATA_REG P2OUT
+#define BUS_CTRL_REG P1OUT
+#define BUS_CTRL_IN_REG P1IN
+#define _CS0 BIT0
+#define _CS1 BIT1
+#define _WE BIT2
+#define READY BIT3
+
+#define CHANNEL_A_PERIOD_ADDR 0
+#define CHANNEL_A_ATTEN_ADDR 1
+#define CHANNEL_B_PERIOD_ADDR 2
+#define CHANNEL_B_ATTEN_ADDR 3
+#define CHANNEL_C_PERIOD_ADDR 4
+#define CHANNEL_C_ATTEN_ADDR 5
+
+#define IGNORE_OCTET 0xff
+
+uint8_t psgAmplitudeShadowValue[3];
+
+static void delay() {
+  asm volatile (
+      "push r12\n"
+      "mov.w #5, r12\n"
+      "loop:\n"
+      "dec.w r12\n"
+      "jnz loop\n"
+      "pop r12\n"
+  );
+}
+
+inline static void WRITE_CYCLE(uint8_t chipNo) {
+  if (chipNo == 0) {
+    BUS_CTRL_REG &= ~_CS0;
+  } else {
+    BUS_CTRL_REG &= ~_CS1;
+  }
+
+  BUS_CTRL_REG &= ~_WE;
+
+  delay();
+
+  while ((BUS_CTRL_IN_REG & READY) == 0);
+
+  BUS_CTRL_REG |= _WE;
+
+  if (chipNo == 0) {
+    BUS_CTRL_REG |= _CS0;
+  } else {
+    BUS_CTRL_REG |= _CS1;
+  }
+
+  delay();
+}
+
+static void psgWrite(uint8_t chipNo, uint8_t value) {
+  ADDR_DATA_REG = value;
+  WRITE_CYCLE(chipNo);
+}
+
+static void psgWriteFrequency(uint8_t channel, uint16_t frequencyCode) {
+  uint8_t chipNo = channel / 3;
+  uint8_t regAddr = (channel % 3) * 2;
+
+  // bit order in frequncyCode and order in octet on data bus are reversed
+  // see datacheat cp. 1 and cp. 6
+  uint8_t firstOctet = 0x01;
+  firstOctet |= ((regAddr & 0x04) > 1);
+  firstOctet |= ((regAddr & 0x02) < 1);
+  firstOctet |= ((regAddr & 0x01) < 3);
+  uint8_t lowerPart = frequencyCode & 0x0f;
+  firstOctet |= ((lowerPart & 0x08) << 1);
+  firstOctet |= ((lowerPart & 0x04) << 3);
+  firstOctet |= ((lowerPart & 0x02) << 5);
+  firstOctet |= ((lowerPart & 0x01) << 7);
+
+  uint8_t secondOctet = 0;
+  uint8_t upperPart = (frequencyCode & 0x03f0) >> 4;
+  secondOctet |= ((upperPart & 0x20) >> 3);
+  secondOctet |= ((upperPart & 0x10) >> 1);
+  secondOctet |= ((upperPart & 0x08) << 1);
+  secondOctet |= ((upperPart & 0x04) << 3);
+  secondOctet |= ((upperPart & 0x02) << 5);
+  secondOctet |= ((upperPart & 0x01) << 7);
+
+  ADDR_DATA_REG = firstOctet;
+  WRITE_CYCLE(chipNo);
+
+  ADDR_DATA_REG = secondOctet;
+  WRITE_CYCLE(chipNo);
+}
+
+void psgAmplitude(uint8_t channel, uint8_t volume) {
+  psgAmplitudeShadowValue[channel] = volume;
+  uint8_t chipNo = channel / 3;
+  uint8_t regAddr = ((channel % 3) * 2) + 1;
+
+  uint8_t attenuation = 15 - volume;
+
+  uint8_t firstOctet = 0x01;
+  firstOctet |= ((regAddr & 0x04) >> 1);
+  firstOctet |= ((regAddr & 0x02) << 1);
+  firstOctet |= ((regAddr & 0x01) << 3);
+  firstOctet |= ((attenuation & 0x01) << 7);
+  firstOctet |= ((attenuation & 0x02) << 5);
+  firstOctet |= ((attenuation & 0x04) << 3);
+  firstOctet |= ((attenuation & 0x08) << 1);
+
+  ADDR_DATA_REG = firstOctet;
+  WRITE_CYCLE(chipNo);
+}
+
+void psgPlayTone(uint8_t channel, uint8_t volume, t_octave octave, t_note note) {
+  if (note == e_Pause) {
+    psgAmplitude(channel, 0);
+  } else {
+//    if (psgAmplitudeShadowValue[channel] == 0) {
+      psgAmplitude(channel, volume);
+//    }
+    psgWriteFrequency(channel, frequencyCodes[octave][note]);
+  }
+}
+
+void psgInit() {
+  // address/data bus
+  P2DIR = 0xff;
+  P2SEL = 0;
+  P2SEL2 = 0;
+
+  // bus control lines
+  //   output:
+  //     BIT0: /CS chip 0
+  //     BIT1: /CS chip 1
+  //     BIT2: /WE
+  //   input:
+  //     BIT3: READY
+  P1DIR |= BIT0 | BIT1 | BIT2;
+  P1DIR &= ~BIT3;
+  // immediately disable all outputs, all are active low
+  P1OUT |= BIT0 | BIT1 | BIT2;
+
+  // shutdown all channels including noise
+  psgWrite(0, 0b11111001);
+  psgWrite(0, 0b11111101);
+  psgWrite(0, 0b11111011);
+  psgWrite(0, 0b11111111);
+
+//  psgPlayTone(0, 5, e_O_3, e_A);
+  psgAmplitude(0, 3);
+}
+

sound-driver/spi.S

@@ -44,6 +44,7 @@ spiCmdHandler_5:
 spiCmdHandler_6:
   bit     #SOUND_LOCK, &cmd
   jz      spiCmdHandler_7
+  call    #playEffect1
   ;; insert a call here
   bic     #SOUND_LOCK, &cmd
 spiCmdHandler_7:

sound-driver/spi_init.c

@@ -18,7 +18,7 @@ void spiInit() {
   P1SEL2 |= BIT4 | BIT5 | BIT7;
 
   // most significant bit first, enable STE
-  UCB0CTL0 = UCCKPH | UCSYNC | UCMSB | UCMODE_2;
+  UCB0CTL0 = UCSYNC | UCMSB | UCMODE_2;
   UCB0CTL1 = 0x00;
 
   // enable RX interrupt