native_motor_driver_qdec_simulation() callback is called each time motor_set() from motor_driver driver is called. It set associated qdec value to the PWM duty cycle. QDEC values are stored in qdecs_value[] array in the order motors are described in board.h. Then it is needed to configure in first motors that needs the QDEC in board.h. Signed-off-by: Gilles DOFFE <g.doffe@gmail.com>