Support more clock speeds

output_i2s.cpp

 #elif F_CPU == 180000000
   #define MCLK_MULT 16
   #define MCLK_DIV  255
+  #define MCLK_SRC  0
 #elif F_CPU == 192000000
   #define MCLK_MULT 1
   #define MCLK_DIV  17
+#elif F_CPU == 216000000
+  #define MCLK_MULT 8
+  #define MCLK_DIV  153
+  #define MCLK_SRC  0
+#elif F_CPU == 240000000
+  #define MCLK_MULT 4
+  #define MCLK_DIV  85
 #elif F_CPU == 16000000
   #define MCLK_MULT 12
   #define MCLK_DIV  17
   #error "This CPU Clock Speed is not supported by the Audio library";
 #endif
 
+#ifndef MCLK_SRC
 #if F_CPU >= 20000000
   #define MCLK_SRC  3  // the PLL
 #else
   #define MCLK_SRC  0  // system clock
 #endif
+#endif
 
 void AudioOutputI2S::config_i2s(void)
 {

output_i2s_quad.cpp

 #elif F_CPU == 180000000
   #define MCLK_MULT 16
   #define MCLK_DIV  255
+  #define MCLK_SRC  0
 #elif F_CPU == 192000000
   #define MCLK_MULT 1
   #define MCLK_DIV  17
+#elif F_CPU == 216000000
+  #define MCLK_MULT 8
+  #define MCLK_DIV  153
+  #define MCLK_SRC  0
+#elif F_CPU == 240000000
+  #define MCLK_MULT 4
+  #define MCLK_DIV  85
 #elif F_CPU == 16000000
   #define MCLK_MULT 12
   #define MCLK_DIV  17
   #error "This CPU Clock Speed is not supported by the Audio library";
 #endif
 
+#ifndef MCLK_SRC
 #if F_CPU >= 20000000
   #define MCLK_SRC  3  // the PLL
 #else
   #define MCLK_SRC  0  // system clock
 #endif
+#endif
 
 void AudioOutputI2SQuad::config_i2s(void)
 {

output_spdif.cpp

 #elif F_CPU == 180000000
   #define MCLK_MULT 16
   #define MCLK_DIV  255
+  #define MCLK_SRC  0
 #elif F_CPU == 192000000
   #define MCLK_MULT 1
   #define MCLK_DIV  17
+#elif F_CPU == 216000000
+  #define MCLK_MULT 8
+  #define MCLK_DIV  153
+  #define MCLK_SRC  0
+#elif F_CPU == 240000000
+  #define MCLK_MULT 4
+  #define MCLK_DIV  85
 #elif F_CPU == 16000000
   #define MCLK_MULT 12
   #define MCLK_DIV  17
   #error "This CPU Clock Speed is not supported by the Audio library";
 #endif
 
+#ifndef MCLK_SRC
 #if F_CPU >= 20000000
   #define MCLK_SRC  3  // the PLL
 #else
   #define MCLK_SRC  0  // system clock
 #endif
+#endif
 
 
 void AudioOutputSPDIF::config_SPDIF(void)

utility/pdb.h

 
 #define PDB_CONFIG (PDB_SC_TRGSEL(15) | PDB_SC_PDBEN | PDB_SC_CONT | PDB_SC_PDBIE | PDB_SC_DMAEN)
 
-#if F_BUS == 60000000
+
+#if F_BUS == 120000000
+  #define PDB_PERIOD (2720-1)
+#elif F_BUS == 108000000
+  #define PDB_PERIOD (2448-1)
+#elif F_BUS == 96000000
+  #define PDB_PERIOD (2176-1)
+#elif F_BUS == 90000000
+  #define PDB_PERIOD (2040-1)
+#elif F_BUS == 80000000
+  #define PDB_PERIOD (1813-1)  // small ?? error
+#elif F_BUS == 72000000
+  #define PDB_PERIOD (1632-1)
+#elif F_BUS == 64000000
+  #define PDB_PERIOD (1451-1)  // small ?? error
+#elif F_BUS == 60000000
   #define PDB_PERIOD (1360-1)
 #elif F_BUS == 56000000
   #define PDB_PERIOD (1269-1)  // 0.026% error
+#elif F_BUS == 54000000
+  #define PDB_PERIOD (1224-1)
 #elif F_BUS == 48000000
   #define PDB_PERIOD (1088-1)
+#elif F_BUS == 40000000
+  #define PDB_PERIOD (907-1)  // small ?? error
 #elif F_BUS == 36000000
   #define PDB_PERIOD (816-1)
 #elif F_BUS == 24000000