Add S/PDIF RX/TX via 4-bit XCORE-200 port

app_example_rx/src/main.xc

@@ -8,6 +8,7 @@
 #include "SpdifReceive.h"
 
 buffered in port:4 oneBitPort = XS1_PORT_1F;
+buffered in port:32 fourBitsPort = XS1_PORT_4D;
 clock clockblock = XS1_CLKBLK_1;
 //::
 
@@ -30,7 +31,10 @@ void handleSamples(streaming chanend c) {
 int main(void) {
     streaming chan c;
     par {
-        SpdifReceive(oneBitPort, c, 1, clockblock);
+        //------ Use one of these functions -------
+		SpdifReceive(oneBitPort, c, 1, clockblock);
+		//SpdifReceive_port4_buf32(fourBitsPort, c, 1, clockblock);
+		//-----------------------------------------
         handleSamples(c);
     }
     return 0;

app_example_tx/src/main.xc

@@ -8,11 +8,13 @@
 #include <xs1.h>
 #include <platform.h>
 #include "SpdifTransmit.h"
+#include "SpdifTransmit_4bitPort.h"
 
 #define SAMPLE_FREQUENCY_HZ 96000
 #define MASTER_CLOCK_FREQUENCY_HZ 12288000
 
 on stdcore[1] : buffered out port:32 oneBitPort = XS1_PORT_1K;
+on stdcore[1] : buffered out port:32 fourBitsPort = XS1_PORT_4D;
 on stdcore[1] : in port masterClockPort = XS1_PORT_1L;
 on stdcore[1] : clock clockblock = XS1_CLKBLK_1;
 //::
@@ -106,6 +108,13 @@ void transmitSpdif(chanend c) {
 }
 //::
 
+//::spdif thread 2
+void transmitSpdif_4bitPort(chanend c) {
+    SpdifTransmitPortConfig_4bitPort(fourBitsPort, clockblock, masterClockPort);
+    SpdifTransmit_4bitPort(fourBitsPort, c);
+}
+//::
+
 //::data generation
 #define WAVE_LEN 512
 void generate(chanend c) {
@@ -139,7 +148,10 @@ void example(void) {
    chan c;
    setupPll();
    par {
-      transmitSpdif(c);
+      //------- Use one of these functions -------
+	  transmitSpdif(c);
+	  //transmitSpdif_4bitPort(c);
+	  //------------------------------------------
       generate(c);
       clockGen();
    }

module_spdif_rx/README.rst

@@ -1,5 +1,5 @@
-module_spdif_tx
+module_spdif_rx
 ================
 
 :scope: General Use
-:description: S/PDIF transmit module
+:description: S/PDIF receive module

module_spdif_rx/src/SpdifReceive.h

@@ -59,4 +59,20 @@
  **/
 void SpdifReceive(in buffered port:4 p, streaming chanend c, int initial_divider, clock clk);
 
+
+/**
+ * \param p               S/PDIF input 4-bit port. This port must be 32-bit buffered,
+ *                        declared as ``in buffered port:32``
+ *
+ * \param c               channel to output samples to
+ *
+ * \param initial_divider initial divide for initial estimate of sample rate
+ *                        For a 100Mhz reference clock, use an initial divider
+ *                        of 1 for 192000, 2 for 96000/88200, and 4 for 48000/44100.
+ *
+ * \param clk             clock block sourced from the 100 MHz reference clock.
+ *
+ **/
+void SpdifReceive_port4_buf32(in buffered port:32 p, streaming chanend c, int initial_divider, clock clk); 
+
 #endif // _SpdifReceive_h_