Motorola M68HC08 manual Communication with PC Master Software Specifications

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

BLDC Motor Control

Application Control

3.4.1.1 Communication with PC Master Software Specifications

SCI communication protocol with a default of 9.6 Kbaud, is used for communication as described in User’s Manual for PC Master Software, Motorola 2000, found on the World Wide Web at:

http://e-www.motorola.com

PC master software controls and senses the status of the application with:

•PC master software — BLDC demonstration suitcase communication commands

•PC master software — BLDC demonstration suitcase communication bytes

After reset, the BLDC control MCU software is in manual mode. In order to control the system from PC master software, it is necessary to set PC master software mode, and then to provide the MCU software control from PC master software via application interface variables.

3.4.1.2 PC Master Software, BLDC Control MCU Software API, Communication Commands

Commands defined for the BLDC control MCU software are listed in Table 3-1. The commands are very simple. If the software executes the command, it responds with OK byte 00. If it is unable to execute the command, it responds with failed code 55. The commands “Set PC master software mode”, “Set manual mode” can only be executed when the START/STOP switch on the demonstration suitcase is set to STOP and the motor is stopped. Otherwise, a failed response is sent.

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 PC master	01	None	Setting of PC master	00	OK
software mode			software mode	55	Failed

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DRM028 — Rev 0		Designer Reference Manual
MOTOROLA	BLDC Motor Control	51
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