Motorola M68HC08 manual PC Master Software API Variables, Name Type Representing Description Range

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

BLDC Motor Control

Table 3-1. PC Master Software Communication Commands

	Comman	Data	Demo	Respon	Response
Command	d	Byte		s	Descriptio
			Suitcase Action
	Code	s		Byte	n
Set manual	02	None	Setting of manual	00	OK
mode			mode	55	Failed

3.4.1.3 PC Master Software, BLDC Control MCU Software API, Communication Variables

The application interface, data variables used for the exchange between the BLDC control MCU software and PC master software, are shown in Table 3-2. These variables are used for status sensing and control. PC master software accesses these bytes directly from their physical memory addresses.

Table 3-2. PC Master Software API Variables

Name	Type	I/	Representing	Description
		O	Range
Sys3	Sys3_Def	I/	8flags	System variable #3
		O
Motor_Ctrl	Motor_Ctrl_Def	I	8flags	Motor control variable
Motor_Status	Motor_Status_D	O	8flags	Motor status variable
	ef
Failure	Failure_Def	O	8flags	Failure variable
				Speed input variable used for
Sp_Input	U8	I	< 0; 255>	required
				speed calculation
Speed_Range_Max_RP	U16	O	< 0; 65535>	Speed range maximum
M			[rpm]
Speed_Max_RPM	U16	O	< 0; 65535>	Maximal speed limit
			[rpm]
Speed_Min_RPM	U16	O	< 0; 65535>	Minimal speed limit
			[rpm]
Commut_Rev	U8	O	< 0; 255>	Commutations per motor revolution
			<-Curr_Range_Max_c
Curr	S8	O	A;	dc-bus current
			Curr_Range_Max_cA)
Curr_Range_Max_cA	S16	O	<-32768;32767>	Current range maximum
			[A*10^-2]	[A*10^-2]

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