pca95x4.h

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/*
 * Copyright (C) 2020 Gautier Hattenberger <gautier.hattenberger@enac.fr>
 *
 * This file is part of paparazzi.
 *
 * paparazzi 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, or (at your option)
 * any later version.
 *
 * paparazzi 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 paparazzi; see the file COPYING.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

#ifndef PCA95X4_H
#define PCA95X4_H

#include "std.h"
#include "mcu_periph/i2c.h"

#define PCA95X4_DEFAULT_ADDRESS 0x40

#define PCA95X4_INPUT_REG   (0x00)
#define PCA95X4_OUTPUT_REG  (0x01)
#define PCA95X4_POL_REG     (0x02)
#define PCA95X4_CONFIG_REG  (0x03)

#define PCA95X4_P0 (1 << 0)
#define PCA95X4_P1 (1 << 1)
#define PCA95X4_P2 (1 << 2)
#define PCA95X4_P3 (1 << 3)
#define PCA95X4_P4 (1 << 4)
#define PCA95X4_P5 (1 << 5)
#define PCA95X4_P6 (1 << 6)
#define PCA95X4_P7 (1 << 7)

#define PCA95X4_CLEAR_ALL 0x00

struct pca95x4 {
  struct i2c_periph *i2c_p;
  struct i2c_transaction i2c_trans;
};

extern void pca95x4_init(struct pca95x4 *dev, struct i2c_periph *i2c_p, uint8_t addr);

extern bool pca95x4_configure(struct pca95x4 *dev, uint8_t val, bool blocking);

extern bool pca95x4_set_output(struct pca95x4 *dev, uint8_t mask, bool blocking);

#endif