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楼主 |
发表于 2020-4-15 13:06:03
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这是我测试用svc_user.c中的程序,一直进不到中断里边去
#include "cmsis_os2.h"
#include "Measure.h"
#include "led.h"
extern osEventFlagsId_t Measureflag_id;
extern osStatus_t status1,statys2;
extern void LED_thread(void *argument);
void svc_TIM3_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能
//定时器TIM3初始化
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能指定的TIM3中断,允许更新中断
//中断优先级NVIC设置
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占优先级0级
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //从优先级3级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM3, ENABLE); //使能TIMx
}
#define USER_SVC_COUNT 1 // Number of user SVC functions
extern void * const osRtxUserSVC[1+USER_SVC_COUNT];
void * const osRtxUserSVC[1+USER_SVC_COUNT] = {
(void *)USER_SVC_COUNT,
(void *)svc_TIM3_Int_Init,
//(void *)user_function1,
// ...
};
void TIM3_Int_Init(u16 arr,u16 psc) __svc(1);
void TIM3_IRQHandler(void)
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //检查TIM3更新中断发生与否
{
TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //清除TIMx更新中断标志
status1 = osEventFlagsSet (Measureflag_id,0x01);
osThreadNew(LED_thread,NULL,NULL);
}
} |
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