fix PARAM_PREFIX for boards with px4io (CONFIG_BOARD_IO)

src/drivers/dshot/CMakeLists.txt

@@ -1,6 +1,6 @@
 ############################################################################
 #
-#   Copyright (c) 2019 PX4 Development Team. All rights reserved.
+#   Copyright (c) 2019-2021 PX4 Development Team. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -30,10 +30,18 @@
 # POSSIBILITY OF SUCH DAMAGE.
 #
 ############################################################################
+
+set(PARAM_PREFIX PWM_MAIN)
+
+if(CONFIG_BOARD_IO)
+	set(PARAM_PREFIX PWM_AUX)
+endif()
+
 px4_add_module(
 	MODULE drivers__dshot
 	MAIN dshot
-	STACK_MAIN 1200
+	COMPILE_FLAGS
+		-DPARAM_PREFIX="${PARAM_PREFIX}"
 	SRCS
 		DShot.cpp
 		DShotTelemetry.cpp

src/drivers/dshot/DShot.h

@@ -146,11 +146,6 @@ private:
 
 	void handle_vehicle_commands();
 
-#ifdef BOARD_WITH_IO
-# define PARAM_PREFIX "PWM_AUX"
-#else
-# define PARAM_PREFIX "PWM_MAIN"
-#endif
 	MixingOutput _mixing_output {PARAM_PREFIX, DIRECT_PWM_OUTPUT_CHANNELS, *this, MixingOutput::SchedulingPolicy::Auto, false, false};
 
 	Telemetry *_telemetry{nullptr};