Motorola M68HC08 - Manual (Page 53)

BLDC Motor Control
Application Control
DRM028 — Rev 0 Designer Reference Manual
MOTOROLA BLDC Motor Control 53
Type: S8- signed 8 bit, U8- unsigned 8 bit,S16- signed 16bit, U16-
unsigned 16bit
The system registers Sys3, Motor_Ctrl, Motor_Status, Failure flags
are described by definitions of Sys3_Def, Motor_Ctrl_Def,
Motor_Status_Def, Failure_Def:
typedef union
{
struct
{
unsigned int HV : 1; /* BIT0 High Voltage board Flag */
unsigned int LV : 1; /* BIT1 Low Voltage board */
unsigned int EVMm : 1; /* BIT2 EVMm board */
unsigned int BIT3 : 1; /* BIT3 RESERVED */
unsigned int PCMode : 1;/* BIT4 PCMaster/manual mode Flag */
unsigned int BIT5 : 1; /* BIT5 RESERVED */
unsigned int BIT6 : 1; /* BIT6 RESERVED */
unsigned int Alignment : 1; /* BIT7 Alignment state
Proceeding */
} B;
/* |Alignment|***|***|PCMode|***|EVMm|LV||HV| */
char R;
} Sys3_Def;
/* System register #3 Definition */
typedef union
{
struct
{
unsigned int StartCtrl : 1; /* Switch Start set to START
Flag */
unsigned int BIT1 : 1; /* BIT1 RESERVED */
unsigned int BIT2 : 1; /* BIT2 RESERVED */
unsigned int BIT3 : 1; /* BIT5 RESERVED */
unsigned int BIT4 : 1; /* BIT4 RESERVED */
unsigned int BIT5 : 1; /* BIT6 RESERVED */
unsigned int BIT6 : 1; /* BIT6 RESERVED */
unsigned int ClearFail : 1; /* BIT7 Clear failure Status */
} B;
/* |ClearFail|***|***|***|***|***|***|StartCtrl| */
char R;
} Motor_Ctrl_Def;
/* PC master software Motor Control Flags Definition */
typedef union
{
struct
{
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