One way to test the BLDC motor direction is the use of Renesas' HIP2103-4DEMO1Z demonstration board. This is a general purpose 3-phase BLDC motor control board. Three half bridge power circuits drive the motor as shown in this slide. For 0° rotation, the motor current flows from the high-side motor driver output (labeled AHO). The current then flows through the motor coil and is terminated through the low-side motor driver output (labeled BLO). The states are: P (A) = PWM, L (B) = Low, and Z (C) = Hi-Z (high impedance).