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GPIO on a Raspberry Pi with Kotlin/Native

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/*
 * Copyright © 2021 Pavel Kakolin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package io.ktgp.display.tm1637

internal const val TM1637_CMD1: UByte = 0x40U
internal const val TM1637_CMD2: UByte = 0xc0U
internal const val TM1637_CMD3: UByte = 0x80U
internal const val TM1637_DSP_ON: UByte = 0x08U
internal const val TM1637_DSP_OFF: UByte = 0x00U
internal const val TM1637_MSB: UByte = 0x80U
internal const val TM1637_DELAY_NANOS = 10L