43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
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/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __DT_BINDINGS_PIN_PIN_H__
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#define __DT_BINDINGS_PIN_PIN_H__
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/* Bit 0 express polarity */
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#define PIN_ACTIVE_HIGH 0
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#define PIN_ACTIVE_LOW 1
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/* Bit 1 express single-endedness */
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#define PIN_PUSH_PULL 0
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#define PIN_SINGLE_ENDED 2
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/* Bit 2 express Open drain or open source */
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#define PIN_LINE_OPEN_SOURCE 0
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#define PIN_LINE_OPEN_DRAIN 4
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/*
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* Open Drain/Collector is the combination of single-ended open drain interface.
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* Open Source/Emitter is the combination of single-ended open source interface.
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*/
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#define PIN_OPEN_DRAIN (PIN_SINGLE_ENDED | PIN_LINE_OPEN_DRAIN)
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#define PIN_OPEN_SOURCE (PIN_SINGLE_ENDED | PIN_LINE_OPEN_SOURCE)
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/* Bit 3 express PIN suspend/resume and reset persistence */
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#define PIN_PERSISTENT 0
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#define PIN_TRANSITORY 8
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/* Bit 4 express pull up */
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#define PIN_PULL_UP 16
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/* Bit 5 express pull down */
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#define PIN_PULL_DOWN 32
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/* Bit 6 express pull disable */
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#define PIN_PULL_DISABLE 64
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#endif /* __DT_BINDINGS_PIN_PIN_H__ */
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