sensirion_arch_config.h

/*
 * Copyright (c) 2018, Sensirion AG
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * 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.
 *
 * * Neither the name of Sensirion AG 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 HOLDER 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 SENSIRION_ARCH_CONFIG_H
#define SENSIRION_ARCH_CONFIG_H

/**
 * If your platform does not provide the library stdint.h you have to
 * define the integral types yourself (see below).
 */
#include <stdint.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Typedef section for types commonly defined in <stdint.h>
 * If your system does not provide stdint headers, please define them
 * accordingly. Please make sure to define int64_t and uint64_t.
 */
/* typedef unsigned long long int uint64_t;
 * typedef long long int int64_t;
 * typedef long int32_t;
 * typedef unsigned long uint32_t;
 * typedef short int16_t;
 * typedef unsigned short uint16_t;
 * typedef char int8_t;
 * typedef unsigned char uint8_t; */

/**
 * Comment out the following block if your platform already provides the
 * type definitions u8, u16, u32, u64, s8, s16, s32, s64.
 */
typedef int64_t s64;
typedef uint64_t u64;
typedef int32_t s32;
typedef uint32_t u32;
typedef int16_t s16;
//typedef uint16_t u16;
typedef unsigned short u16;   // changed for Arduino; JWI
typedef int8_t s8;
typedef uint8_t u8;

/* Types not typically provided by <stdint.h> */
typedef float f32;

/**
 * Define the endianness of your architecture:
 * 0: little endian, 1: big endian
 * Use the following code to determine if unsure:
 * ```c
 * #include <stdio.h>
 *
 * int is_big_endian(void) {
 *     union {
 *         unsigned int u;
 *         char c[sizeof(unsigned int)];
 *     } e = { 0 };
 *     e.c[0] = 1;
 *
 *     return (e.i != 1);
 * }
 *
 * int main(void) {
 *     printf("Use #define SENSIRION_BIG_ENDIAN %d\n", is_big_endian());
 *
 *     return 0;
 * }
 * ```
 */
#define SENSIRION_BIG_ENDIAN 0

/**
 * The clock period of the i2c bus in microseconds. Increase this, if your GPIO
 * ports cannot support a 200 kHz output rate. (2 * 1 / 10usec == 200Khz)
 *
 * This is only relevant for the sw-i2c HAL (bit-banging on GPIO pins). The
 * pulse length is half the clock period, the number should thus be even.
 */
#define SENSIRION_I2C_CLOCK_PERIOD_USEC 10

#ifdef __cplusplus
}
#endif

#endif /* SENSIRION_ARCH_CONFIG_H */