Define portNOP in RP2040 port (#1003)
diff --git a/portable/ThirdParty/GCC/RP2040/include/portmacro.h b/portable/ThirdParty/GCC/RP2040/include/portmacro.h
index 1fe5e41..bf91eda 100644
--- a/portable/ThirdParty/GCC/RP2040/include/portmacro.h
+++ b/portable/ThirdParty/GCC/RP2040/include/portmacro.h
@@ -278,7 +278,7 @@
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
-#define portNOP()
+#define portNOP() __asm volatile ( "nop" )
#define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )