delay instead of sync

raven/src/hello_raven.cpp

@@ -95,12 +95,8 @@ int main() {
     int * local_mem_base           = (int *) end;
     int * plic_b_pending           = (int *)(0xA0000000+PLIC_PENDING_OFFSET);
 
-    int * local_sync_bit           = (int *)(local_mem_base + 10);
-    volatile int * target_sync_bit = (int *)(target_mem_base + 10);
-
     int hartid = read_csr(mhartid);
 
-    *local_sync_bit = 0;
     platform_init();
 
     if (hartid == 0) {
@@ -112,10 +108,7 @@ int main() {
     	printf("HW thread ID %d: write value A=0x%x and value B=0x%x to thread 1\n", hartid, val_a, val_b);
     }
 
-    *local_sync_bit++;
+    delayUS(100);
-    while (*target_sync_bit < *local_sync_bit) {
-        asm("nop");
-    }
 
     printf("End of execution");
 	return 0;