needed for hmc5883 on main bus (for FMUv3)
@ -134,7 +134,8 @@ __BEGIN_DECLS
/* I2C busses */
#define PX4_I2C_BUS_EXPANSION 1
#define PX4_I2C_BUS_LED 2
#define PX4_I2C_BUS_ONBOARD 2
#define PX4_I2C_BUS_LED PX4_I2C_BUS_ONBOARD
/* Devices on the onboard bus.
*