Diff: fmsd1_micro.cpp

Revision:

0:c54d59d6fb78

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fmsd1_micro.cpp	Fri Jan 05 22:58:49 2018 +0000
@@ -0,0 +1,89 @@
+#include "MicroBit.h"
+
+SPI ymf825(MOSI, MISO, SCK);
+MicroBitPin ss(MICROBIT_ID_IO_P16,MICROBIT_PIN_P16,PIN_CAPABILITY_DIGITAL);
+MicroBitPin rst(MICROBIT_ID_IO_P8,MICROBIT_PIN_P8,PIN_CAPABILITY_DIGITAL);
+
+//extern MicroBit uBit;
+//#define   ss    uBit.io.P16
+//#define   rst   uBit.io.P8
+
+void writeSingleCPP( unsigned char adrs, unsigned char data )
+{
+    ss.setDigitalValue(0);  //  select slave
+    ymf825.write(adrs);
+    ymf825.write(data);
+    ss.setDigitalValue(1);
+    wait_ms(1);
+}
+extern "C" void writeSingle( unsigned char adrs, unsigned char data ){ writeSingleCPP(adrs,data);}
+extern "C" void writeBurst( unsigned char adrs, unsigned char* data, int count )
+{
+    ss.setDigitalValue(0);
+    ymf825.write(adrs);
+    for (int i = 0; i<count; i++) {
+        ymf825.write(*(data + i));
+    }
+    ss.setDigitalValue(1);
+    wait_ms(1);
+}
+extern "C" void delayMs( int ms ){ wait_ms(ms);}
+
+void initSPI(void)
+{
+    //  init SPI
+    ymf825.format(8);   //  mode=0
+    ymf825.frequency(4000000);
+
+}
+void initSD1( void )
+{
+    //  1.  powerOnReset( void );
+    rst.setDigitalValue(0);
+
+    //  2. wait 100usec
+    wait_us(100);
+
+    //  3.  RST_N : high
+    rst.setDigitalValue(1);
+
+    //  4.  DRV_SEL : low
+    writeSingleCPP(29, 1);  //  3.3v
+
+    //  5.  AP0 : 0
+    writeSingleCPP(2, 0x0e);
+
+    //  6.  wait for Quarz stability
+    wait_ms(1);
+
+    //  7.  CLKE : "1"
+    writeSingleCPP(0, 0x01);
+
+    //  8.  ALRST : low
+    writeSingleCPP(1, 0x00);
+
+    //  9.  SFTRST  :   0xa3
+    writeSingleCPP(26, 0xa3);
+    wait_ms(1);
+
+    //  10. SFTRST  :   0x00
+    writeSingleCPP(26, 0x00);
+
+    //  11. wait 30msec
+    wait_ms(30);
+
+    //  12. AP1 AP3: "0"
+    writeSingleCPP(2, 0x04);
+
+    //  13. wait 10usec
+    wait_us(10);
+
+    //  14. AP2: "0"
+    writeSingleCPP(2, 0x00);
+
+    writeSingleCPP(25, 0xcc);   //  -32[dB]
+    writeSingleCPP(27, 0x3f);   //  set itp max
+    writeSingleCPP(20, 0x00);   //  set itp on
+    writeSingleCPP(3, 0x01);    //  amp gain(6.5[dB])
+    writeSingleCPP(9, 0xf8);    //  Sequencer Volume
+}
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