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circuits_uart

1.5.4
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Discover and use UARTs and serial ports in Elixir

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circuits_uart src util.h
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src/util.h 

// SPDX-FileCopyrightText: 2016 Frank Hunleth

// SPDX-FileCopyrightText: 2018 Jon Carstens

// SPDX-FileCopyrightText: 2023 Jon Ringle

//

// SPDX-License-Identifier: Apache-2.0

//

#ifndef UTIL_H

#define UTIL_H



#include <stdio.h>

#include <stdlib.h>

#include <stdint.h>



//#define DEBUG

#ifdef DEBUG

extern FILE *log_location;

#define LOG_LOCATION log_location

#define debug(...) do { fprintf(LOG_LOCATION, "%llu: ", current_time()); fprintf(LOG_LOCATION, __VA_ARGS__); fprintf(LOG_LOCATION, "\r\n"); fflush(LOG_LOCATION); } while(0)

#else

#define LOG_LOCATION stderr

#define debug(...)

#endif



#ifndef __WIN32__

#include <err.h>

#else

// If err.h doesn't exist, define substitutes.

#define err(STATUS, MSG, ...) do { fprintf(LOG_LOCATION, "circuits_uart: " MSG "\n", ## __VA_ARGS__); fflush(LOG_LOCATION); exit(STATUS); } while (0)

#define errx(STATUS, MSG, ...) do { fprintf(LOG_LOCATION, "circuits_uart: " MSG "\n", ## __VA_ARGS__); fflush(LOG_LOCATION); exit(STATUS); } while (0)

#define warn(MSG, ...) do { fprintf(LOG_LOCATION, "circuits_uart: " MSG "\n", ## __VA_ARGS__); fflush(LOG_LOCATION); } while (0)

#define warnx(MSG, ...) do { fprintf(LOG_LOCATION, "circuits_uart: " MSG "\n", ## __VA_ARGS__); fflush(LOG_LOCATION); } while (0)

#endif



#define ONE_YEAR_MILLIS (1000ULL * 60 * 60 * 24 * 365)

uint64_t current_time();



#endif // UTIL_H