Motorola M68HC08 manual BIT2 Reserved

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

BLDC Motor Control

unsigned int	Switch_Start : 1; /* BIT0 Switch START/STOP
	set to START Flag */
unsigned int Running : 1;/* BIT1 Motor is running (Alignment,
Start
		or
Running state) */
unsigned int	BIT2 : 1;	/* BIT2 RESERVED */
unsigned int	V120 : 1;	/* BIT3 120 V DC-Bus detected
	(only for HV DC-Bus) */
unsigned int	BIT4 : 1;	/* BIT4 RESERVED */
unsigned int	BIT5 : 1;	/* BIT5 RESERVED */
unsigned int	BIT6 : 1;	/* BIT6 RESERVED */
unsigned int	BIT7 : 1;	/* BIT7 RESERVED */
} B;

/* ************V120***RunningSwitch_Start */ char R;

} Motor_Status_Def;

/* PC master software Motor Status Flags register Definition */

typedef union
{
struct
{
unsigned int OverCurrent : 1;		/* BIT0 Over-Current
Failure */
unsigned int OverHeating : 1;		/* BIT1 Over-Heating */
unsigned int VoltageFailure : 1;		/* BIT2 Over-Voltage */
unsigned int BIT3	: 1;	/* BIT5 RESERVED */
unsigned int BIT4	: 1;	/* BIT4 RESERVED */
unsigned int BIT5	: 1;	/* BIT6 RESERVED */

unsigned int BoardIdFail : 1;	/* BIT6 pcb Identification
Failure */
unsigned int ErrCmt : 1;	/* BIT7 error Commutation */
} B;

/*

ErrCmt************VoltageFailureOverHeatingOverCurrent

*/

char R;

} Failure_Def; /* Failure Flags register Definition */

Table 3-2declares if the variable is used as an output or input from the BLDC control MCU software side. The variable is described and the unit defined.

When PC master software mode is set, the system start and stop is controlled by StartCtrl flag in Motor_Ctrl variable. When the application enters the fault state, the variable Failure displays the fault reason. Setting the ClearFail flag in Motor_Ctrl will exit the fault state.

Designer Reference Manual		DRM028 — Rev 0
54	BLDC Motor Control	MOTOROLA
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