17 lines
389 B
Plaintext
17 lines
389 B
Plaintext
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/*
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* Copyright (c) 2022 Thomas Stranger
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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&usart1_tx_pc4 {
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/*
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* enable open-drain drive such that no external push-pull to
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* open-drain converter is required. An external pull-up resistor
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* with approximately R=5k resistance is suggested.
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* Also a fixture connecting tx and rx pin is needed.
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*/
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drive-open-drain;
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bias-pull-up;
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};
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