1 /* 2 * Copyright (c) 2009-2022 Huawei Technologies Co., Ltd. All rights reserved. 3 * 4 * UniProton is licensed under Mulan PSL v2. 5 * You can use this software according to the terms and conditions of the Mulan PSL v2. 6 * You may obtain a copy of Mulan PSL v2 at: 7 * http://license.coscl.org.cn/MulanPSL2 8 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, 9 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, 10 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. 11 * See the Mulan PSL v2 for more details. 12 * Create: 2009-12-22 13 * Description: Tick interrupt implementation 14 */ 15 #include "prt_tick_internal.h" 16 17 /* Tick中断对应的硬件定时器ID */ 18 OS_SEC_L4_DATA U16 g_tickHwTimerIndex = OS_MAX_U16; 19 OS_SEC_BSS U32 g_cyclePerTick; 20 21 /* 22 * 描述：注册Tick中断模块信息 23 */ OsTickRegister(struct TickModInfo * modInfo)24OS_SEC_L4_TEXT U32 OsTickRegister(struct TickModInfo *modInfo) 25 { 26 g_tickModInfo.tickPerSecond = modInfo->tickPerSecond; 27 g_tickModInfo.tickPriority = modInfo->tickPriority; 28 29 return OS_OK; 30 } 31 32 /* 33 * 描述：Tick中断的处理函数 34 */ OsTickHookDispatcher(void)35OS_SEC_L0_TEXT void OsTickHookDispatcher(void) 36 { 37 OS_MHOOK_ACTIVATE_PARA0(OS_HOOK_TICK_ENTRY); 38 OsTickDispatcher(); 39 OS_MHOOK_ACTIVATE_PARA0(OS_HOOK_TICK_EXIT); 40 } 41 42 /* 43 * 描述：初始化Tick中断模块 44 */ OsTickConfigInit(void)45OS_SEC_L4_TEXT U32 OsTickConfigInit(void) 46 { 47 if ((g_tickModInfo.tickPerSecond == 0) || (g_tickModInfo.tickPerSecond > g_systemClock)) { 48 return OS_ERRNO_TICK_PER_SECOND_ERROR; 49 } 50 51 g_cyclePerTick = g_systemClock / (g_tickModInfo.tickPerSecond); 52 53 if (OS_IS_TICK_PERIOD_INVALID(g_cyclePerTick)) { 54 return OS_ERRNO_TICK_PERIOD; 55 } 56 57 g_tickDispatcher = OsTickHookDispatcher; 58 59 return OS_HW_TICK_INIT(); 60 } 61 62 /* 63 * 描述：启动Tick中断 64 */ OsTickStart(void)65OS_SEC_L4_TEXT U32 OsTickStart(void) 66 { 67 return OS_OK; 68 } 69 70