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11
Button Functions
Table 6 shows the functions of the push buttons and switches on the board.
ITEM
DESCRIPTION
SW2101
Evaluation kit ON/OFF button
• In Yocto Project, short press and long press will only generate an interrupt,
the usage could be defined by upper software.
• Prolonged depress (>5 sec) will force an immediate hardware shutdown.
• If board is in the SHUTDOWN state, short press of the button will restart
(boot) the system.
• If board is in the STANDBY state, short press of the button will bring the
system out of standby (resume operations, no boot).
SW2102
Evaluation kit RESET button
• Press of the button will reset the system and begin a boot sequence.
SW2001
Evaluation kit switch
• Sliding the switch to the ON position connects the 5 V power supply to the
Evaluation Kit main power system.
• Sliding the switch to the OFF position immediately removes all power from
the board.
Table 6: EVK board button operations