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22 lines
929 B
Text
22 lines
929 B
Text
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Example Description
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This example describes how to use deep sleep api.
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Requirement Components:
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a LED
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a push button
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Pin name PC_4 and PC_5 map to GPIOC_4 and GPIOC_5:
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- PC_4 as input with internal pull-high, connect a push button to this pin and ground.
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- PC_5 as output, connect a LED to this pin and ground.
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In this example, LED is turned on after device initialize.
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User push the button to turn off LED and trigger device enter deep sleep mode for 10s.
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If user press any key before sleep timeout, the system will resume.
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LED is turned on again after device initialize.
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It can be easily measure power consumption in normal mode and deep sleep mode before/after push the putton.
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NOTE: You will see device resume immediately at first time.
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It's because the log uart is a wakeup source and it buffered a wakeup event when DAP is used.
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The symptom won't appear if you use power source on R43 and only power on module.
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