1 /* 2 * Copyright (c) 2020 HiSilicon (Shanghai) Technologies CO., LIMITED. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 /** 16 * @defgroup linux Linux 17 * @defgroup delay Delay 18 * @ingroup linux 19 */ 20 #ifndef _ASM_DELAY_H 21 #define _ASM_DELAY_H 22 23 #include "los_typedef.h" 24 #include "los_tick.h" 25 26 #ifdef __cplusplus 27 extern "C" { 28 #endif /* __cplusplus */ 29 30 #ifndef udelay 31 /** 32 * @ingroup delay 33 * @brief It is same with #LOS_Udelay. 34 * @par Dependency: 35 * <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul> 36 */ 37 #define udelay(n) LOS_Udelay(n) 38 #endif 39 40 #ifndef mdelay 41 /** 42 * @ingroup delay 43 * @brief It is same with #LOS_Mdelay. 44 * @par Dependency: 45 * <ul><li>los_tick.h: the header file that contains the API declaration.</li></ul> 46 */ 47 #define mdelay(n) LOS_Mdelay(n) 48 #endif 49 50 /** 51 * @ingroup delay 52 * @brief Delay current task. 53 * 54 * @par Description: 55 * <ul> 56 * <li>This API is used to delay current task.</li> 57 * </ul> 58 * @attention 59 * <ul> 60 * <li>The unit of param is millisecond, and the minimum is 1 tick.</li> 61 * <li>This API is not an accurate delay function. The actual delay time is longer than that of parameter msecs.</li> 62 * </ul> 63 * 64 * @param msecs [IN] Type #unsigned int time to delay current task. 65 * @retval None. 66 * @par Dependency: 67 * <ul><li>delay.h: the header file that contains the API declaration.</li></ul> 68 * @see None. 69 * @since Huawei LiteOS V100R001C00 70 */ 71 extern void msleep(unsigned int msecs); 72 73 #ifdef __cplusplus 74 } 75 #endif /* __cplusplus */ 76 77 #endif 78