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c7f2e0246e
Also add snprintf(), and %X format code. BUG=chrome-os-partner:10206 TEST=timerinfo; should print correctly. 'ectool battery' on host side should print same serial as 'battery' on EC console. Change-Id: I5c9f69d1a20ee5d0a59440c122655adbf62c9aea Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/24635 Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rong Chang <rongchang@chromium.org>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* Copyright (c) 2012 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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/* Printf-like functionality for Chrome EC */
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#ifndef __CROS_EC_PRINTF_H
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#define __CROS_EC_PRINTF_H
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#include <stdarg.h> /* For va_list */
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#include "common.h"
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/* SUPPORTED FORMAT CODES:
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* char (%c)
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* string (%s)
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* native int (signed/unsigned) (%d / %u / %x / %X)
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* int32_t / uint32_t (%d / %x / %X)
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* int64_t / uint64_t (%ld / %lu / %lx / %lX)
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* pointer (%p)
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* And the following special format codes:
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* current time in sec (%T) - interpreted as "%.6T" for fixed-point format
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* including padding (%-5s, %8d, %08x, %016lx)
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*
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* Floating point output (%f / %g) is not supported, but there is a fixed-point
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* extension for integers; a padding option of .N (where N is a number) will
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* put a decimal before that many digits. For example, printing 123 with
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* format code %.6d will result in "0.000123". This is most useful for
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* printing times, voltages, and currents. */
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/* Print formatted output to a function, like vfprintf()
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*
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* addchar() will be called for every character to be printed, with the context
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* pointer passed to vfnprintf(). addchar() should return 0 if the character
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* was accepted or non-zero if the character was dropped due to overflow.
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*
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* Returns error if output was truncated. */
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int vfnprintf(int (*addchar)(void *context, int c), void *context,
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const char *format, va_list args);
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/* Print formatted outut to a string */
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int snprintf(char *str, int size, const char *format, ...);
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#endif /* __CROS_EC_PRINTF_H */
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