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- /* Copyright 2022
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #pragma once
-
- #include <stdint.h>
- #include <stdbool.h>
-
- /**
- * Driver for 74x138 3-to-8 decoder/demultiplexer with inverting outputs
- * https://assets.nexperia.com/documents/data-sheet/74HC_HCT138.pdf
- */
-
- /**
- * Initialize the address and output enable pins.
- */
- void sn74x138_init(void);
-
- /**
- * Set the enabled state.
- *
- * When enabled is true, pulls the E1 and E2 pins low, and the E3 pin high.
- *
- * \param enabled The enable state to set.
- */
- void sn74x138_set_enabled(bool enabled);
-
- /**
- * Set the output pin address.
- *
- * The selected output pin will be pulled low, while the remaining output pins will be high.
- *
- * \param address The address to set, from 0 to 7.
- */
- void sn74x138_set_addr(uint8_t address);
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