Merge branch 'DEV_ADAT_TX'

module_usb_audio/audio.xc

@@ -19,9 +19,13 @@
 #ifdef SPDIF
 #include "SpdifTransmit.h"
 #endif
+#ifdef ADAT_TX
+#include "adat_tx.h"
+#endif
 #include "commands.h"
 #include "xc_ptr.h"
 
+#include "print.h"
 
 static unsigned samplesOut[NUM_USB_CHAN_OUT];
 
@@ -76,6 +80,10 @@ extern port p_mclk_in;
 extern buffered out port:32 p_spdif_tx;
 #endif
 
+#ifdef ADAT_TX
+extern buffered out port:32 p_adat_tx;
+#endif
+
 extern clock    clk_audio_mclk;
 extern clock    clk_audio_bclk;
 extern clock    clk_mst_spd;
@@ -153,6 +161,59 @@ static inline void doI2SClocks(unsigned divide)
 }
 #endif
 
+unsigned adatCounter = 0;
+unsigned adatSamples[8];
+
+#pragma unsafe arrays
+static inline void TransferAdatTxSamples(chanend c_adat_out, const unsigned samplesFromHost[], int smux, int handshake)
+{
+
+    /* Do some re-arranging for SMUX.. */
+    unsafe
+    {
+        unsigned * unsafe samplesFromHostAdat = &samplesFromHost[ADAT_TX_INDEX];
+        
+        /* Note, when smux == 1 this loop just does a straight 1:1 copy */
+        //if(smux != 1)
+        {
+            int adatSampleIndex = adatCounter;
+            for(int i = 0; i < (8/smux); i++)
+            {
+                adatSamples[adatSampleIndex] = samplesFromHostAdat[i];
+                adatSampleIndex += smux;
+            }   
+        }
+    }
+    
+    adatCounter++;
+    
+    if(adatCounter == smux)
+    {
+
+#ifdef ADAT_TX_USE_SHARED_BUFF
+        unsafe
+        {       
+            /* Wait for ADAT core to be done with buffer */ 
+            /* Note, we are "running ahead" of the ADAT core */
+            inuint(c_adat_out);
+ 
+            /* Send buffer pointer over to ADAT core */
+            volatile unsigned * unsafe samplePtr = &adatSamples;
+            outuint(c_adat_out, (unsigned) samplePtr);                        
+        }
+#else            
+#pragma loop unroll
+        for (int i = 0; i < 8; i++)
+        {
+            outuint(c_adat_out, samplesFromHost[ADAT_TX_INDEX + i]); 
+        }
+#endif
+        adatCounter = 0;
+    }
+
+}
+
+
 #pragma unsafe arrays
 static inline unsigned DoSampleTransfer(chanend c_out, int readBuffNo, unsigned underflowWord)
 {
@@ -378,12 +439,18 @@ static inline void InitPorts(unsigned divide)
 
 /* I2S delivery thread */
 #pragma unsafe arrays
-unsigned static deliver(chanend c_out, chanend ?c_spd_out, unsigned divide, unsigned curSamFreq,
+unsigned static deliver(chanend c_out, chanend ?c_spd_out, 
+#ifdef ADAT_TX
+    chanend c_adat_out,
+    unsigned adatSmuxMode, 
+#endif
+    unsigned divide, unsigned curSamFreq,
 #if(defined(SPDIF_RX) || defined(ADAT_RX))
     chanend c_dig_rx,
 #endif
     chanend ?c_adc)
 {
+
 #if (I2S_CHANS_ADC != 0) || defined(SPDIF)
 	unsigned sample;
 #endif
@@ -413,6 +480,8 @@ chanend ?c_adc)
 
     unsigned frameCount = 0;
 
+    adatCounter = 0;
+
 #if(DSD_CHANS_DAC != 0)
     if(dsdMode == DSD_MODE_DOP)
     {
@@ -424,14 +493,18 @@ chanend ?c_adc)
     }
 #endif
 
-#if 1
     unsigned command = DoSampleTransfer(c_out, readBuffNo, underflowWord);
-
+#ifdef ADAT_TX
+    unsafe{ 
+    //TransferAdatTxSamples(c_adat_out, samplesOut, adatSmuxMode, 0);
+    volatile unsigned * unsafe samplePtr = &samplesOut[ADAT_TX_INDEX];
+    outuint(c_adat_out, (unsigned) samplePtr); 
+    }
+#endif 
     if(command)
     {
         return command;
     }
-#endif
  
     InitPorts(divide);
 
@@ -578,6 +651,9 @@ chanend ?c_adc)
             doI2SClocks(divide);
 #endif
   
+          
+         
+
 #if (I2S_CHANS_ADC != 0)
             /* Input previous L sample into L in buffer */
             index = 0;
@@ -600,6 +676,10 @@ chanend ?c_adc)
             }
 #endif
             
+#ifdef ADAT_TX 
+             TransferAdatTxSamples(c_adat_out, samplesOut, adatSmuxMode, 1);
+#endif 
+
         if(frameCount == 0)
         {
 
@@ -824,6 +904,12 @@ chanend ?c_config, chanend ?c)
 #ifdef SPDIF
     chan c_spdif_out;
 #endif
+#ifdef ADAT_TX
+    chan c_adat_out;
+    unsigned adatSmuxMode = 0;
+    unsigned adatMultiple = 0;
+#endif
+
     unsigned curSamFreq = DEFAULT_FREQ;
     unsigned curSamRes_DAC = STREAM_FORMAT_OUTPUT_1_RESOLUTION_BITS; /* Default to something reasonable */
     unsigned curSamRes_ADC = STREAM_FORMAT_INPUT_1_RESOLUTION_BITS; /* Default to something reasonable - note, currently this never changes*/
@@ -878,11 +964,21 @@ chanend ?c_config, chanend ?c)
         EnableBufferedPort(p_dsd_dac[i], 32);
     }
 #endif
-
+#ifdef ADAT_TX
+    /* Share SPDIF clk blk */
+    configure_clock_src(clk_mst_spd, p_mclk_in);
+    configure_out_port_no_ready(p_adat_tx, clk_mst_spd, 0);
+    set_clock_fall_delay(clk_mst_spd, 7);
+#ifndef SPDIF
+    start_clock(clk_mst_spd);
+#endif
+#endif
+    /* Configure ADAT/SPDIF tx ports */
 #ifdef SPDIF
     SpdifTransmitPortConfig(p_spdif_tx, clk_mst_spd, p_mclk_in);
 #endif
 
+
     /* Perform required CODEC/ADC/DAC initialisation */
     AudioHwInit(c_config);
 
@@ -892,10 +988,20 @@ chanend ?c_config, chanend ?c)
         if ((MCLK_441 % curSamFreq) == 0)
         {
             mClk = MCLK_441;
+#ifdef ADAT_TX 
+            /* Calculate ADAT SMUX mode (1, 2, 4) */
+            adatSmuxMode = curSamFreq / 44100; 
+            adatMultiple = mClk / 44100; 
+#endif
         }
         else if ((MCLK_48 % curSamFreq) == 0)
         {
             mClk = MCLK_48;
+#ifdef ADAT_TX 
+            /* Calculate ADAT SMUX mode (1, 2, 4) */
+            adatSmuxMode = curSamFreq / 48000; 
+            adatMultiple = mClk / 48000; 
+#endif
         }
 
         /* Calculate master clock to bit clock (or DSD clock) divide for current sample freq
@@ -1011,8 +1117,6 @@ chanend ?c_config, chanend ?c)
         }
         firstRun = 0;
 
-
-
         par
         {
 
@@ -1023,6 +1127,12 @@ chanend ?c_config, chanend ?c)
             }
 #endif
 
+#ifdef ADAT_TX
+            {
+                set_thread_fast_mode_on();
+                adat_tx_port(c_adat_out, p_adat_tx);
+            }
+#endif
             {
 #ifdef SPDIF
                 /* Communicate master clock and sample freq to S/PDIF thread */
@@ -1030,11 +1140,28 @@ chanend ?c_config, chanend ?c)
                 outuint(c_spdif_out, mClk);
 #endif
 
+#ifdef ADAT_TX
+                // Configure ADAT parameters ...
+                //
+                // adat_oversampling =  256 for MCLK = 12M288 or 11M2896
+                //                   =  512 for MCLK = 24M576 or 22M5792
+                //                   = 1024 for MCLK = 49M152 or 45M1584
+                //
+                // adatSmuxMode   = 1 for FS =  44K1 or  48K0
+                //                = 2 for FS =  88K2 or  96K0
+                //                = 4 for FS = 176K4 or 192K0
+                outuint(c_adat_out, adatMultiple);
+                outuint(c_adat_out, adatSmuxMode);
+#endif
                 command = deliver(c_mix_out,
 #ifdef SPDIF
                    c_spdif_out,
 #else
                    null,
+#endif
+#ifdef ADAT_TX
+                   c_adat_out,
+                   adatSmuxMode, 
 #endif
                    divide, curSamFreq,
 #if defined (ADAT_RX) || defined (SPDIF_RX)
@@ -1074,10 +1201,17 @@ chanend ?c_config, chanend ?c)
                     	}
                   	}
                 }
-
 #ifdef SPDIF
                 /* Notify S/PDIF thread of impending new freq... */
                 outct(c_spdif_out, XS1_CT_END);
+#endif
+#ifdef ADAT_TX
+#ifdef ADAT_TX_USE_SHARED_BUFF
+                /* Take out-standing handshake from ADAT core */
+                inuint(c_adat_out);
+#endif
+                /* Notify ADAT Tx thread of impending new freq... */
+                outct(c_adat_out, XS1_CT_END);
 #endif
             }
         }

module_usb_audio/devicedefines.h

@@ -231,6 +231,10 @@
 #undef SPDIF
 #endif
 
+#ifdef SPDIF
+#define SPDIF_TX 1
+#endif
+
 /**
  * @brief Defines which output channels (stereo) should be output on S/PDIF. Note, Output channels indexed from 0.
  *
@@ -240,6 +244,27 @@
 #define SPDIF_TX_INDEX        (0)
 #endif
 
+/**
+ * @brief Enables ADAT Tx. Default: 0 (Disabled)
+ */
+#ifndef ADAT_TX
+#define ADAT_TX               (0)
+#endif
+
+/* Tidy up old SPDIF usage */
+#if defined(ADAT_TX) && (ADAT_TX == 0)
+#undef ADAT_TX
+#endif
+
+/**
+ * @brief Defines which output channels (8) should be output on ADAT. Note, Output channels indexed from 0.
+ *
+ * Default: 0 (i.e. channels [0:7])
+ * */
+#ifndef ADAT_TX_INDEX
+#define ADAT_TX_INDEX         (0)
+#endif
+
 /**
  * @brief Enables SPDIF Rx. Default: 0 (Disabled)
  */

module_usb_audio/endpoint0/chanstringgen.py

@@ -0,0 +1,56 @@
+
+
+def genstrings(outputChanCount, chanString, portString, structureString, adc_dac):
+    
+    for i in range(1,outputChanCount):
+
+        print "#if (NUM_USB_CHAN_{c} > {i}-1) \n\
+    .{s}ChanStr_{i}          = \"\"\n\
+    #if ({i} < I2S_CHANS_{adcdac}+1) \n\
+        \"Analogue {i}\" \n\
+    #endif \n\
+    #if (({i} < SPDIF_{p}_INDEX+2+1) && ({i} > SPDIF_{p}_INDEX)) && defined(SPDIF_{p}) \n\
+        #if ({i} < I2S_CHANS_{adcdac}+1) \n\
+        \"/\" \n\
+        #endif \n\
+        #if({i} - SPDIF_TX_INDEX == 1) \n\
+            \"SPDIF 1\"\n\
+        #elif({i} - SPDIF_TX_INDEX == 2) \n\
+            \"SPDIF 2\"\n\
+        #endif\n\
+    #endif\n\
+    #if (({i} < ADAT_{p}_INDEX+8+1) && ({i} > ADAT_{p}_INDEX)) && defined(ADAT_{p}) \n\
+        #if (({i} < SPDIF_{p}_INDEX+2+1) && ({i} > SPDIF_{p}_INDEX)) && defined(SPDIF_{p}) || ({i} < I2S_CHANS_{adcdac}+1) \n\
+        \"/\" \n\
+        #endif \n\
+        #if({i} - ADAT_TX_INDEX == 1) \n\
+            \"ADAT 1\"\n\
+        #elif({i} - ADAT_TX_INDEX == 2) \n\
+            \"ADAT 2\"\n\
+        #elif({i} - ADAT_TX_INDEX == 3) \n\
+            \"ADAT 3\"\n\
+        #elif({i} - ADAT_TX_INDEX == 4) \n\
+            \"ADAT 4\"\n\
+        #elif({i} - ADAT_TX_INDEX == 5) \n\
+            \"ADAT 5\"\n\
+        #elif({i} - ADAT_TX_INDEX == 6) \n\
+            \"ADAT 6\"\n\
+        #elif({i} - ADAT_TX_INDEX == 7) \n\
+            \"ADAT 7\"\n\
+        #elif({i} - ADAT_TX_INDEX == 8) \n\
+            \"ADAT 8\"\n\
+        #endif\n \
+    #endif\n\
+        , \n#endif \n".format(i=i, c=chanString, p=portString, s=structureString, adcdac=adc_dac);
+    return;
+
+print "/* AUTOGENERATED using chanstringgen.py */ \n"
+print "/* Not very nice looking but the standard preprocessor is not very powerful\n and we save some memory over doing this all at runtime */"
+
+print "/* Output Strings */\n\n"
+
+genstrings(32, "OUT", "TX", "output", "DAC");
+
+print "/* Input Strings */\n\n"
+
+genstrings(32, "IN", "RX", "input", "ADC");

module_usb_audio/main.xc

@@ -119,6 +119,10 @@ on tile[XUD_TILE] : in port p_for_mclk_count                = PORT_MCLK_COUNT;
 on tile[AUDIO_IO_TILE] : buffered out port:32 p_spdif_tx    = PORT_SPDIF_OUT;
 #endif
 
+#ifdef ADAT_TX
+on stdcore[AUDIO_IO_TILE] : buffered out port:32 p_adat_tx        = PORT_ADAT_OUT;
+#endif
+
 #ifdef ADAT_RX
 on stdcore[XUD_TILE] : buffered in port:32 p_adat_rx        = PORT_ADAT_IN;
 #endif
@@ -147,9 +151,7 @@ on tile[AUDIO_IO_TILE] :  buffered in port:1 p_midi_rx      = PORT_MIDI_IN;
 on tile[AUDIO_IO_TILE] : clock    clk_midi                  = CLKBLK_MIDI;
 #endif
 
-#ifdef SPDIF
 on tile[AUDIO_IO_TILE] : clock    clk_mst_spd               = CLKBLK_SPDIF_TX;
-#endif
 
 #ifdef SPDIF_RX
 on tile[XUD_TILE] : clock    clk_spd_rx                     = CLKBLK_SPDIF_RX;