Radio Junk Box
KAMUI DIN-SYNC Example
Revision 0:e3174b02ec81, committed 2012-05-05
- Comitter:
- radiojunkbox
- Date:
- Sat May 05 11:34:19 2012 +0000
- Commit message:
- Rev. 1.0
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD.lib Sat May 05 11:34:19 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/simon/code/TextLCD/#44f34c09bd37
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat May 05 11:34:19 2012 +0000
@@ -0,0 +1,337 @@
+//-------------------------------------------------------------
+// KAMUI DIN SYNC Example
+// Copyright (C) 2012 RJB RadioJunkBox
+// Released under the MIT License: http://mbed.org/license/mit
+//-------------------------------------------------------------
+
+#include "mbed.h"
+#include "TextLCD.h"
+
+//-------------------------------------------------------------
+// Define
+
+#define AD5551 // 14bitDAC
+
+#define SPI_RATE 1000000 // 1Mbps
+#define MIDI_RATE 31250 // 31.25kbps
+#define BEEP_FREQ 1760.0 // 1760Hz
+#define UPDATE_INTERVAL 50 // 50us
+#define SW_WATCH_INTERVAL (25000/UPDATE_INTERVAL) // 25ms
+
+#define UPDATE_MODE0 0 // Update Interval CV ch1-6 600us, ch7,8 200us
+#define UPDATE_MODE1 1 // Update Interval CV ch1-6 N/A, ch7,8 100us
+
+#define GATE1 0x01
+#define GATE2 0x02
+#define GATE3 0x04
+#define GATE4 0x08
+
+#define SYNC1CLK 0x01
+#define SYNC1RUN 0x02
+#define SYNC2CLK 0x04
+#define SYNC2RUN 0x08
+
+#define MODE_CV 0x00
+#define MODE_GATE 0x40
+#define MODE_SYNC 0x80
+#define MODE_SET_SYNC 0xC0
+
+#define SW1 0x01
+#define SW2 0x02
+#define SW3 0x04
+#define SW4 0x08
+#define SYNC1CLK_IN 0x10
+#define SYNC1RUN_IN 0x20
+#define SYNC2CLK_IN 0x40
+#define GATE_IN 0x80
+
+#define _ENABLE 0
+#define _DISABLE 1
+
+#define TBASE (60*1000000/(48*UPDATE_INTERVAL))
+
+//-------------------------------------------------------------
+// Functions
+
+void InitKamui(void);
+void UpdateCV(void);
+void DinSync(unsigned char);
+unsigned char CheckSW(unsigned char);
+
+//-------------------------------------------------------------
+// Global Variables
+
+int gUpdateMode;
+unsigned short gCV[8];
+unsigned char gGATE;
+unsigned char gSYNC;
+unsigned short gT1,gT2;
+
+union {
+ unsigned short WORD;
+ struct {
+ unsigned char L;
+ unsigned char H;
+ } BYTE;
+} gDAC;
+
+//-------------------------------------------------------------
+// mbed Functions
+
+// TextLCD
+TextLCD gLCD(p23, p24, p25, p26, p29, p30); // rs, e, d4-d7
+
+// SPI
+SPI gSPI(p11,p12,p13);
+DigitalOut gCSA(p14);
+DigitalOut gCSB(p22);
+
+// Sirial MIDI
+Serial gMIDI(p9,p10);
+
+// AnalogIn
+AnalogIn gAIN1(p15); // VR1
+AnalogIn gAIN2(p16); // VR2
+AnalogIn gAIN3(p17); // VR3
+AnalogIn gAIN4(p18); // VR4
+AnalogIn gAIN5(p19); // IN1
+AnalogIn gAIN6(p20); // IN2
+
+// BEEP
+PwmOut gBEEP(p21);
+
+// LED
+DigitalOut gLED1(LED1);
+DigitalOut gLED2(LED2);
+DigitalOut gLED3(LED3);
+DigitalOut gLED4(LED4);
+BusOut gLEDS(LED1,LED2,LED3,LED4);
+
+// Ticker
+Ticker gTICKER;
+
+//-------------------------------------------------------------
+// main
+
+int main() {
+
+ unsigned int pot1, pot2, pot3, pot4;
+ unsigned int tempo;
+ unsigned int t,s;
+
+ InitKamui();
+
+ while(1) {
+
+ // POT1 Tempo 40 - 220 bpm
+ // POT2 Suffle Rate
+ // POT3 CV1 - CV4 0V - +10V
+ // POT4 CV5 - CV8 -10V - +10V
+
+ pot1 = gAIN1.read_u16();
+ pot2 = gAIN2.read_u16() / 0x0400;
+ pot3 = gAIN3.read_u16() / 2 + 0x8000;
+ pot4 = gAIN4.read_u16();
+
+ tempo = pot1 / 364 + 40;
+ t = TBASE / tempo;
+ s = t * pot2 / 127;
+
+ gT1 = t + s;
+ gT2 = t - s;
+
+ gCV[0] = pot3;
+ gCV[1] = pot3;
+ gCV[2] = pot3;
+ gCV[3] = pot3;
+ gCV[4] = pot4;
+ gCV[5] = pot4;
+ gCV[6] = pot4;
+ gCV[7] = pot4;
+
+ gLCD.locate( 0, 1 );
+ gLCD.printf("TEMPO=%03d SFL=%02d", tempo, pot2);
+ }
+}
+
+//-------------------------------------------------------------
+// Initialize KAMUI
+
+void InitKamui()
+{
+ // Init. Variables
+ for( int i=0; i<8; i++) {
+ gCV[i] = 0x8000;
+ }
+ gGATE = 0;
+ gSYNC = 0;
+
+ gUpdateMode = UPDATE_MODE0;
+
+ // Init. SPI
+ gCSA = _DISABLE;
+ gCSB = _DISABLE;
+ gSPI.format(8,0);
+ gSPI.frequency(SPI_RATE);
+
+ // Init. Serial MIDI
+ gMIDI.baud(MIDI_RATE);
+
+ // Ticker
+ gTICKER.attach_us(&UpdateCV, UPDATE_INTERVAL);
+
+ // Beep
+ gBEEP.period(1.0/BEEP_FREQ);
+ gBEEP.write(0.5);
+ wait(0.2);
+ gBEEP.write(0.0);
+
+ // Init Display
+ gLCD.locate( 0, 0 );
+ // 123456789ABCDEF
+ gLCD.printf("DIN-SyncExample");
+}
+
+//-------------------------------------------------------------
+// Update CV, GATE, SYNC
+
+void UpdateCV()
+{
+ unsigned char rcv,sw,ch;
+ unsigned char ptn[] = { 0,1,6,7,2,3,6,7,4,5,6,7 };
+ const int numptn = (sizeof ptn / sizeof ptn[0]) - 1;
+ static unsigned char cnt;
+
+ // SET DAC
+ ch = ptn[cnt];
+ if(gUpdateMode) ch |= 0x06;
+
+#ifdef AD5551 // 14bitDAC
+ gDAC.WORD = gCV[ch] >> 2;
+#else
+ gDAC.WORD = gCV[ch];
+#endif
+
+ gCSA = _ENABLE;
+ gSPI.write(gDAC.BYTE.H);
+ gSPI.write(gDAC.BYTE.L);
+ gCSA = _DISABLE;
+
+ // GATE or SYNC OUT
+ if(cnt & 0x01) {
+ // GATE OUT
+ gCSB = _ENABLE;
+ rcv = gSPI.write(gGATE | MODE_GATE) & 0x0F;
+ gCSB = _DISABLE;
+ }
+ else {
+ // SYNC OUT
+ gCSB = _ENABLE;
+ rcv = gSPI.write(gSYNC | MODE_SYNC);
+ gCSB = _DISABLE;
+ }
+
+ // SEL CV CHANNEL
+ gCSB = _ENABLE;
+ gSPI.write(ch);
+ gCSB = _DISABLE;
+
+ cnt < numptn ? cnt++ : cnt = 0;
+
+ sw = CheckSW(rcv);
+ DinSync(sw);
+}
+
+//-------------------------------------------------------------
+// DIN Sync
+
+void DinSync(unsigned char sw) {
+
+ static unsigned int cnt;
+ static unsigned char cnt48;
+ static unsigned char _cnt48;
+
+ // BEAT COUNTER
+ if((cnt48 % 24) < 12) {
+ if( cnt >= gT1) {
+ cnt = 0;
+ cnt48++;
+ }
+ }
+ else {
+ if( cnt >= gT2) {
+ cnt = 0;
+ cnt48++;
+ }
+ }
+ if(cnt48 >= 48) cnt48 = 0;
+
+ // START/STOP
+ if(sw & (SW1 | SW2)) {
+ if( !(gSYNC & (SYNC1RUN | SYNC2RUN))){
+ cnt = 0;
+ cnt48 = 0;
+ gGATE = 0;
+ }
+ if(sw & SW1) gSYNC ^= SYNC1RUN;
+ if(sw & SW2) gSYNC ^= SYNC2RUN;
+ }
+
+ // TOGGLE SYNC CLOCK
+ if(cnt48 & 0x01) {
+ gSYNC &= ~(SYNC1CLK | SYNC2CLK);
+ }
+ else {
+ gSYNC |= (SYNC1CLK | SYNC2CLK);
+ }
+
+ // SYNC LED
+ gLED1 = gSYNC & SYNC1RUN ? 1 : 0;
+ gLED2 = gSYNC & SYNC2RUN ? 1 : 0;
+ gLED4 = cnt48 < 8 ? 1 : 0;
+
+ // TOGGLE GATE OUT
+ if(gSYNC & (SYNC1RUN | SYNC2RUN)) {
+ if(cnt48 != _cnt48) {
+ if((cnt48 % 6) == 0) gGATE ^= GATE1;
+ if((cnt48 % 12) == 0) gGATE ^= GATE2;
+ if((cnt48 % 24) == 0) gGATE ^= GATE3;
+ if((cnt48 % 48) == 0) gGATE ^= GATE4;
+ }
+ }
+ else gGATE = 0;
+ _cnt48 = cnt48;
+
+ cnt++;
+}
+
+//-------------------------------------------------------------
+// Check SW
+
+unsigned char CheckSW(unsigned char c) {
+
+ static unsigned char swbuf[2];
+ static unsigned int cntsw;
+ unsigned char ret = 0;
+
+ if(cntsw > SW_WATCH_INTERVAL) {
+ if(c &= 0x0F) {
+ if(!swbuf[1]) {
+ if( swbuf[0] == c) {
+ swbuf[1] = c;
+ ret = c;
+ }
+ else {
+ swbuf[0] = c;
+ }
+ }
+ }
+ else {
+ swbuf[1] = 0;
+ swbuf[0] = 0;
+ }
+ cntsw = 0;
+ }
+ cntsw++;
+ return ret;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat May 05 11:34:19 2012 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/737756e0b479