add wait for both spn interrupts

raven_spn/src/init.h

@@ -66,6 +66,17 @@ void wait_for_spn2_interrupt() {
     spn2_hw_interrupt=true;
 }
 
+void wait_for_spn_interrupts() {
+    if(spn1_hw_interrupt || spn2_hw_interrupt) {
+        do{
+            asm("wfi");
+            asm("nop");
+        }while(spn1_hw_interrupt || spn2_hw_interrupt);
+    }
+    spn1_hw_interrupt=true;
+    spn2_hw_interrupt=true;
+}
+
 /*!\brief initializes platform
  *
  */

raven_spn/src/raven_spn.cpp

@@ -97,8 +97,7 @@ int main() {
     for (int k = 0; k < iterations*step; k+=step) {
         run_xspn1(in_addr, out_addr1, step, in_beats, out_beats);
         run_xspn2(in_addr, out_addr2, step, in_beats, out_beats);
-        wait_for_spn1_interrupt();
-        wait_for_spn2_interrupt();
+        wait_for_spn_interrupts();
         printf("XSPN finished\n");
         spn_checker::offset_reg() = k;
         spn_checker::length_reg() = step;