1/* 2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <stdarg.h> 33#include <stdio.h> 34#include "los_interrupt.h" 35 36#define BUFSIZE 256 37 38STATIC VOID UartPutc(CHAR c) 39{ 40 (VOID)uart_tx_one_char(c); 41} 42 43STATIC VOID FuncPuts(const CHAR *s, VOID (*funcPutc)(CHAR c)) 44{ 45 UINT32 intSave; 46 47 intSave = LOS_IntLock(); 48 while (*s) { 49 funcPutc(*s++); 50 } 51 LOS_IntRestore(intSave); 52} 53 54INT32 printf(const CHAR *fmt, ...) 55{ 56 CHAR buf[BUFSIZE] = { 0 }; 57 va_list ap; 58 va_start(ap, fmt); 59 int len = vsnprintf_s(buf, sizeof(buf), BUFSIZE - 1, fmt, ap); 60 va_end(ap); 61 if (len > 0) { 62 FuncPuts(buf, UartPutc); 63 } else { 64 FuncPuts("printf error!\n", UartPutc); 65 } 66 return len; 67} 68 69