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OSD3358-SM-RED Getting Started Guide
Rev. 1.0 9/7/2017
Octavo Systems LLC
Copyright 2017
4.4
User LEDs
While the LEDs D4 through D7 can be controlled as desired, they have the following standard
function when the system is booted.
•
D4: Activity indicator for MMC1 interface (eMMC)
•
D5: Activity indicator for the kernel
•
D6: Activity indicator for MMC0 interface (SD card)
•
D7: Heartbeat indicator from Linux kernel
4.5
Powering down/power cycling
Once the system has completely booted, the board can be safely powered down in the following
way:
1. Execute the shutdown command on Linux command line. Wait for LEDs D5 and D7 to
turn off. Unplug the power source.
The board can be reset using one of the following methods:
1. Hold the PWR button S2 pushed for 8 seconds
2. Push the RST button S1
