Octagon 6000 Series, User Manual

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18-4
CPU power management 6000 Series user’s manual
Initiating the SUSPEND/RESUME option with system
activities
1. In SETUP and in a .PMI file, enable power management and select the
following options:
SETUP:
Power management: ENABLED
Time updated after suspend: ENABLED
2. Create a .PMI file such as TEST.PMI. Include the following commands
in the TEST.PMI file:
TEST.PMI file:
pmi enable=Y Enables the power management
suspend delay=5 SUSPEND after 5 minutes of idling
Note The qualified activities to prevent the system from entering the SUS-
PEND mode are keyboard, video, hard disk, printer, COM ports, floppy
drive, IRQs, and DRQs.
3. Specify the devices to be powered down in SUSPEND mode by entering
the commands below:
suspend hdd=Y Powers down the hard disk
suspend fdd=Y Powers down the floppy disk
suspend COM2=Y Powers down COM2
4. Specify the events to resume the system from SUSPEND mode.
keyboard resume=Y Resumes the system from SUSPEND mode
com1 resume=Y Resumes the system from SUSPEND mode
Note The qualified activities to resume the system from SUSPEND mode are
keyboard, video, hard disk, printer, real time clock, DRQs, COM ports,
and IN accesses (interrupts related to input devices).
5. When the real time clock is used to initiate RESUME from SUSPEND,
enter:
rtc resume=Y Resumes the real time clock from the SUSPEND mode
An example program named WAKEIRQ8 is included in the
\EXAMPLES directory on the PC Microcontroller utility disk. This
program powers the CMOS clock to generate an IRQ8 after a 30-second
delay. During the delay, the system halts. After 30 seconds, the system
resumes from SUSPEND.
6. Load the .PMI file changes by including the .PMI file on the PMISETUP
command line. PMISETUP is located in the \UTILS directory:
C:\> PMISETUP TEST.PMI
7. Hardware reset the system for the PMISETUP options to take effect.
The system is now under power management and is ready for
SUSPEND/RESUME.