add PSRAM support

modularev · Nov 9, 2020 · f84a55c · f84a55c
1 parent cc7127a
commit f84a55c
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Showing 2 changed files with 17 additions and 1 deletion.
diff --git a/architecture/teensy/teensy.cpp b/architecture/teensy/teensy.cpp
@@ -96,14 +96,23 @@ std::list<GUI*> GUI::fGuiList;
 ztimedmap GUI::gTimedZoneMap;
 #endif
 
+#ifdef USEPSRAM
+constexpr size_t bufSize = sizeof(mydsp);
+EXTMEM uint8_t myHeap[bufSize];
+#endif
+
 AudioFaust::AudioFaust() : AudioStream(FAUST_INPUTS, new audio_block_t*[FAUST_INPUTS])
 {
 #ifdef NVOICES
     int nvoices = NVOICES;
     mydsp_poly* dsp_poly = new mydsp_poly(new mydsp(), nvoices, true, true);
     fDSP = dsp_poly;
 #else
-    fDSP = new mydsp();
+    #ifdef USEPSRAM
+        fDSP = new(myHeap) mydsp();
+    #else
+        fDSP = new mydsp();
+    #endif
 #endif
 
     fDSP->init(AUDIO_SAMPLE_RATE_EXACT);

diff --git a/tools/faust2appls/faust2teensy b/tools/faust2appls/faust2teensy
@@ -20,6 +20,7 @@ set -e
 LIB="0"
 NVOICES=0
 MIDI=0
+EXT=0
 
 echoHelp ()
 {
@@ -28,6 +29,7 @@ echoHelp ()
     option
     option -lib "generates a package containing an object compatible with the Teensy audio library."
     option -midi
+    option -ext "uses external PSRAM available on Teensy 4.1"
     option "-nvoices <num>"
     option "Faust options"
 }
@@ -48,6 +50,8 @@ do
         NVOICES=$1
     elif [ $p = "-midi" ]; then
         MIDI=1
+    elif [ $p = "-ext" ]; then
+        EXT=1
     elif [[ -f "$p" ]]; then
         FILE="$p"
     elif [ $p = "-lib" ]; then
@@ -85,6 +89,9 @@ if [ $LIB -eq 1 ]; then
     if [ $MIDI -eq 1 ]; then
         echo '#define MIDICTRL' >> $MODULENAME/$MODULENAME.h
     fi
+    if [ $EXT -eq 1 ]; then
+        echo '#define USEPSRAM' >> $MODULENAME/$MODULENAME.h
+    fi    
     cat $FAUSTARCH/teensy/teensy.h >> $MODULENAME/$MODULENAME.h
     TMP=$(awk -v modName="$MODULENAME" '{gsub(/AudioFaust/,modName)}1' $MODULENAME/$MODULENAME.cpp)
     echo "$TMP" > $MODULENAME/$MODULENAME.cpp