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/*
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "debug.h"
#include "los_tick.h"
#include "los_task.h"
#include "los_config.h"
#include "los_interrupt.h"
#include "los_debug.h"
#include "los_compiler.h"
/* Global define */
/* Global Variable */
__attribute__((aligned (8))) UINT8 g_memStart[LOSCFG_SYS_HEAP_SIZE];
UINT32 g_VlaueSp=0;
/*********************************************************************
* @fn taskSampleEntry2
*
* @brief taskSampleEntry2 program.
*
* @return none
*/
VOID taskSampleEntry2(VOID)
{
while(1) {
LOS_TaskDelay(5000);
printf("taskSampleEntry2 running,task2 SP:%08x\n",__get_SP());
}
}
/*********************************************************************
* @fn taskSampleEntry1
*
* @brief taskSampleEntry1 program.
*
* @return none
*/
VOID taskSampleEntry1(VOID)
{
while(1) {
LOS_TaskDelay(1000);
printf("taskSampleEntry1 running,task1 SP:%08x\n",__get_SP());
}
}
/*********************************************************************
* @fn EXTI0_INT_INIT
*
* @brief Initializes EXTI0 collection.
*
* @return none
*/
void EXTI0_INT_INIT(void)
{
GPIO_InitTypeDef GPIO_InitStructure={0};
EXTI_InitTypeDef EXTI_InitStructure={0};
NVIC_InitTypeDef NVIC_InitStructure={0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOA ----> EXTI_Line0 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA,GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 4;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*********************************************************************
* @fn taskSample
*
* @brief taskSample program.
*
* @return none
*/
UINT32 taskSample(VOID)
{
UINT32 uwRet;
UINT32 taskID1,taskID2;
TSK_INIT_PARAM_S stTask={0};
stTask.pfnTaskEntry = (TSK_ENTRY_FUNC)taskSampleEntry1;
stTask.uwStackSize = 0X500;
stTask.pcName = "taskSampleEntry1";
stTask.usTaskPrio = 6;/* 高優(yōu)先級(jí) */
uwRet = LOS_TaskCreate(&taskID1, &stTask);
if (uwRet != LOS_OK) {
printf("create task1 failed\n");
}
stTask.pfnTaskEntry = (TSK_ENTRY_FUNC)taskSampleEntry2;
stTask.uwStackSize = 0X500;
stTask.pcName = "taskSampleEntry2";
stTask.usTaskPrio = 7;/* 低優(yōu)先級(jí) */
uwRet = LOS_TaskCreate(&taskID2, &stTask);
if (uwRet != LOS_OK) {
printf("create task2 failed\n");
}
EXTI0_INT_INIT();
return LOS_OK;
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
LITE_OS_SEC_TEXT_INIT int main(void)
{
unsigned int ret;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
SystemCoreClockUpdate();
Delay_Init();
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n",SystemCoreClock);
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
ret = LOS_KernelInit();
taskSample();
if (ret == LOS_OK)
{
LOS_Start();
}
while (1) {
__asm volatile("nop");
}
}
/*********************************************************************
* @fn EXTI0_IRQHandler
*
* @brief This function handles EXTI0 Handler.
*
* @return none
*/
void EXTI0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI0_IRQHandler(void)
{
/* 中斷棧使用的是原來(lái)調(diào)用main設(shè)置的值，將中斷棧和線(xiàn)程棧分開(kāi)，這樣線(xiàn)程跳中斷，中斷函數(shù)如果嵌套深度較大，不至于
* 線(xiàn)程棧被壓滿(mǎn)溢出，但是采用當(dāng)前方式，線(xiàn)程進(jìn)中斷時(shí)，編譯器保存到的16個(gè)caller寄存器任然壓入線(xiàn)程棧，如果需要希
* 望caller寄存器壓入中斷棧，則中斷函數(shù)的入口和出口需要使用匯編，中間調(diào)用用戶(hù)中斷處理函數(shù)即可，詳見(jiàn)los_exc.S
* 中的ipq_entry例子
* */
GET_INT_SP();
HalIntEnter();
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
g_VlaueSp= __get_SP();
printf("Run at EXTI:");
printf("interruption sp:%08x\r\n",g_VlaueSp);
HalDisplayTaskInfo();
EXTI_ClearITPendingBit(EXTI_Line0); /* Clear Flag */
}
HalIntExit();
FREE_INT_SP();
}

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