mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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e3edad4459
simple UART driver to get the serial console on the USART3. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BUG=None TEST=run on Discovery board and check we get the first message on the UART and the console is echoing the characters. Change-Id: Id85999a5ddbd75804e9317a1b8c2fd4afb89eb38
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Various utility functions and macros */
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#ifndef __UTIL_H
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#define __UTIL_H
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#include <stdint.h>
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#include "config.h"
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/**
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* Trigger a compilation failure if the condition
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* is not verified at build time.
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*/
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#define BUILD_ASSERT(cond) ((void)sizeof(char[1 - 2*!(cond)]))
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/**
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* Trigger a debug exception if the condition
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* is not verified at runtime.
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*/
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#ifdef CONFIG_DEBUG
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#define ASSERT(cond) do { \
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if (!(cond)) \
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__asm("bkpt"); \
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} while (0);
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#else
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#define ASSERT(cond)
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#endif
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/* Standard macros / definitions */
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define NULL ((void *)0)
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/**
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* macros for integer division with various rounding variants
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* default integer division rounds down.
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*/
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#define DIV_ROUND_UP(x, y) (((x) + ((y) - 1)) / (y))
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#define DIV_ROUND_NEAREST(x, y) (((x) + ((y) / 2)) / (y))
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/* Standard library functions */
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int atoi(const char *nptr);
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int isdigit(int c);
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int isspace(int c);
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int isalpha(int c);
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void *memcpy(void *dest, const void *src, int len);
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void *memset(void *dest, int c, int len);
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int strcasecmp(const char *s1, const char *s2);
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int strlen(const char *s);
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int strtoi(const char *nptr, char **endptr, int base);
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char *strzcpy(char *dest, const char *src, int len);
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int tolower(int c);
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#endif /* __UTIL_H */
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