123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990 |
- /****************************************************************************
- * drivers/i2c/pca9540bdp.h
- *
- * Copyright (C) 2018 Giorgio Groß. All rights reserved.
- * Author: Giorgio Groß <giorgio.gross@robodev.eu>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- #ifndef __DRIVERS_I2C_PCA9540BDP_H
- #define __DRIVERS_I2C_PCA9540BDP_H
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/i2c/i2c_master.h>
- #ifdef CONFIG_I2CMULTIPLEXER_PCA9540BDP
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- #ifndef CONFIG_PCA9549BDP_I2C_FREQUENCY
- # define CONFIG_PCA9549BDP_I2C_FREQUENCY 400000 /* 400 khz */
- #endif
- /* Bit Definitions to be passed to write calls */
- #define PCA9540BDP_ENABLE 0x4
- #define PCA9540BDP_DISABLE 0x0
- /* Bit masks */
- #define PCA9540BDP_CH_BITMASK 0x03
- #define PCA9540BDP_ENABLE_BITMASK 0x04
- #define PCA9540BDP_CH_BIT 0
- #define PCA9540BDP_CH_NONE_BIT 1
- #define PCA9540BDP_ENABLE_BIT 2
- /****************************************************************************
- * Public Types
- ****************************************************************************/
- struct pca9540bdp_dev_s
- {
- FAR struct i2c_master_s *i2c; /* I2C interface */
- uint16_t addr;
- uint8_t state; /* Control register state */
- };
- struct i2c_port_dev_s
- {
- FAR struct i2c_master_s vi2c; /* Nested structure to allow casting as
- * public i2c master */
- uint8_t port; /* Associated port on the mux */
- FAR struct pca9540bdp_dev_s *dev; /* Associated device */
- };
- #endif /* CONFIG_I2CMULTIPLEXER_PCA9540BDP */
- #endif /* __DRIVERS_I2CMULTIPLEXER_PCA9540BDP_H */
|