void Timerx_Init(GPTM_TypeDef* GPTMx,u16 arr,u16 psc)
{
GPTM_TimeBaseInitTypeDef GPTM_TimeBaseStructure;
//NVIC_InitTypeDef NVIC_InitStructure;
Assert_Param(IS_GPTM(GPTMx));
if(GPTMx==GPTM0)
{
CKCU_APBPerip1ClockConfig(CKCU_APBEN1_GPTM0,ENABLE);
}
else if(GPTMx==GPTM1)
{
CKCU_APBPerip1ClockConfig(CKCU_APBEN1_GPTM1,ENABLE);
}
GPTM_DeInit(GPTMx);
GPTM_TimeBaseStructure.CounterReload = 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 计数到5000为500ms
GPTM_TimeBaseStructure.Prescaler =(7200-1); //设置用来作为TIMx时钟频率除数的预分频值 10Khz的计数频率
GPTM_TimeBaseStructure.PSCReloadTime = GPTM_PSC_RLD_UPDATE;//无事件发生，等待下一次重载//TIM 中断源
GPTM_TimeBaseStructure.CounterMode = GPTM_CNT_MODE_UP; //TIM向上计数模式
GPTM_TimeBaseInit(GPTMx, &GPTM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
/* TIM IT enable */
GPTM_IntConfig( //使能或者失能指定的TIM中断
GPTMx, //TIMx
TIM_IT_Update | //TIM 中断源
TIM_IT_Trigger, //TIM 触发中断源
ENABLE //使能
);
/* Enable the TIMx global Interrupt */
if(GPTMx==GPTM0)
{
NVIC_SetPriority(GPTM0_IRQn,NVIC_EncodePriority(5,0,3));
NVIC_EnableIRQ(GPTM0_IRQn);
GPTM_IntConfig(GPTM0,GPTM_INT_UEV,ENABLE);
}
else
if(GPTMx==GPTM1)
{
NVIC_SetPriority(GPTM1_IRQn,NVIC_EncodePriority(5,0,3));
NVIC_EnableIRQ(GPTM1_IRQn);
GPTM_IntConfig(GPTM1,GPTM_INT_UEV,ENABLE);
}
/*
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); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器
*/
GPTM_Cmd(GPTMx, ENABLE); //使能TIMx外设
}
/*********************************************************************************************************//**
* @brief Configures GPTM0 for time estimate.
* @retval None
***********************************************************************************************************/
void GPTM_Configuration(void)
{
GPTM_TimeBaseInitTypeDef TimeBaseInit;
TimeBaseInit.CounterMode = GPTM_CNT_MODE_UP;
TimeBaseInit.CounterReload = SystemCoreClock / (1000 * 2);
TimeBaseInit.Prescaler = 1;
TimeBaseInit.PSCReloadTime = GPTM_PSC_RLD_IMMEDIATE;
GPTM_TimeBaseInit(GPTM0, &TimeBaseInit);
GPTM_Cmd(GPTM0, ENABLE);
}
