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/*
* The MIT License (MIT)
*
* Copyright (c) 2015 Matthias P. Braendli
*
* 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.
*/
/* A set of common routines for internal timekeeping and a LFSR to generate
* a random number
*/
#include <stdint.h>
#ifndef _COMMON_H_
#define _COMMON_H_
void common_init(void);
// Return the current timestamp in milliseconds. Timestamps are monotonic, and not
// wall clock time.
uint64_t timestamp_now(void);
// Return either 0 or 1, somewhat randomly
int random_bool(void);
// Fault handling mechanism
#define FAULT_SOURCE_MAIN 1
#define FAULT_SOURCE_GPS 2
#define FAULT_SOURCE_I2C 3
#define FAULT_SOURCE_USART 4
void trigger_fault(int source);
#endif // _COMMON_H_
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