Motorola M68HC08 - Manual (Page 51)

BLDC Motor Control
Application Control
DRM028 — Rev 0 Designer Reference Manual
MOTOROLA BLDC Motor Control 51
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.
1. Microsoft is a registered trademark of Microsoft Corporation in the United States and/or other
countries.
Table 3-1. PC Master Software Communication Commands
Command
Comman
d
Code
Data
Byte
s
Demo
Suitcase Action
Respon
s
Byte
Response
Descriptio
n
Set PC master
software mode
01 None
Setting of PC master
software mode 00
55 OK
Failed
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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