mirror of
https://gitee.com/Polarix/simplegui.git
synced 2025-08-19 07:53:39 +00:00
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
#include "Timer.h"
|
|
|
|
static bool s_bTimerTriggered = false;
|
|
|
|
void TIMBase_Int_Init(TIM_TypeDef* pstTimerBase, uint16_t uiReloadValue, uint16_t uiPrescaler)
|
|
{
|
|
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
|
|
NVIC_InitTypeDef NVIC_InitStructure;
|
|
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能
|
|
|
|
/* Configure timer data. */
|
|
TIM_TimeBaseStructure.TIM_Period = uiReloadValue; //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 = uiPrescaler; //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(pstTimerBase, &TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
|
|
|
|
TIM_ITConfig(pstTimerBase,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 = 1; //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(pstTimerBase, ENABLE);
|
|
}
|
|
|
|
/* Timer-3 interrupt service interface. */
|
|
void TIM3_IRQHandler(void)
|
|
{
|
|
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)
|
|
{
|
|
TIM_ClearITPendingBit(TIM3, TIM_IT_Update );
|
|
s_bTimerTriggered = true;
|
|
}
|
|
}
|
|
|
|
bool GetTimerTriggered(void)
|
|
{
|
|
return s_bTimerTriggered;
|
|
}
|
|
void ResetTimerTriggered(void)
|
|
{
|
|
s_bTimerTriggered = false;
|
|
}
|