320 lines
11 KiB
C
320 lines
11 KiB
C
#include "../main/SystemInclude.h"
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/*-=====================================================================================================
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//TIMER1
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-=====================================================================================================*/
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/**------------------------------------------------------------------------
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* @brief 通用周期定时器（自适应时钟周期）
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* @note 时钟源：APB2_CLK
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* @param uploadCounter: 期望的周期，单位：毫秒 范围:(1~4000)
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* @example: StartTimer1(10); // 启动10ms周期定时器
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**/
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void StartTimer1_UIE(u16 uploadCounter)
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{
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if(uploadCounter>4000)uploadCounter = 4000;
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if(uploadCounter<= 0)uploadCounter = 1;
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u32 APB2_CLK = LHL_RCC_GetPCLK2Freq();
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u32 prescaler = (APB2_CLK / 16000UL) - 1; //固定分频系数 (APB1_CLK / 32000UL) - 1;
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u32 period =(u32)(16UL * uploadCounter);//动态ARR计数 (uint32_t)(32000UL * uploadCounter) / 1000UL;
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TIM_InitTypeDef TIM_InitStructure;
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TIM_InitStructure.Period = period;
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TIM_InitStructure.Prescaler = prescaler;
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TIM_InitStructure.ClockDivision = TIM_CKD_DIV1;
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TIM_InitStructure.CounterMode = TIM_COUNTERMODE_UP;
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TIM_InitStructure.AutoReloadPreload = ENABLE;
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LHL_TIM_Init(TIM1, &TIM_InitStructure);
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/*使能TIM1更新中断UIE */
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LHL_TIM_ITConfig(TIM1, TIM_IT_UPDATE, ENABLE);
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NVIC_EnableIRQ(TIM1_IRQn);
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NVIC_SetPriority(TIM1_IRQn,1);
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LHL_TIM_Start(TIM1);
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}
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/**------------------------------------------------------------------------
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* @brief 通用周期定时器（自适应时钟周期）修改周期
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* @note 时钟源：APB2_CLK
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* @param uploadCounter: 期望的周期，单位：毫秒 范围:(1~4000)
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* @example: ResetTimer1_UIE(20); // 定时器周期改为20ms
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**/
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void ResetTimer1_UIE( u16 uploadCounter )
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{
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// 参数检查
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if(uploadCounter>4000)uploadCounter = 4000;
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if(uploadCounter<= 0)uploadCounter = 1;
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// 计算新ARR的值
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u32 period =(u32)(16UL * uploadCounter); //PSC不变，ARR计算与StartTimer1相同
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TIM1->CNT = 0; //先重置计数器 再设置ARR，避免立即溢出
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LHL_TIM_ClearPending(TIM1, TIM_IT_UPDATE);//当前CNT已经接近或超过ARR，这里可能产生更新事件 所以需要先清除标志
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TIM1->ARR = (u16)period ; //修改ARR 如果PSC需要改变，必须停止定时器！
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LHL_TIM_Start(TIM1); //确保定时器启用
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}
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/**------------------------------------------------------------------------
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* @brief 通用比较定时器（无电平输出）
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* @note 时钟源：APB2_CLK
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* @param uploadCounter: 计数值(1~65535)，需要换算成期望周期 计数值=65535/4000*t
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* @example: StartTimer1(327); //启动20ms比较定时器 327=65535/4000*20
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**/
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void StartTimer1_CC1(u16 uploadCounter)
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{
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TIM_InitTypeDef TIM_InitStructure;
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TIM_InitStructure.Period = 65535;
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TIM_InitStructure.Prescaler = 244;
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TIM_InitStructure.ClockDivision = TIM_CKD_DIV1;
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TIM_InitStructure.CounterMode = TIM_COUNTERMODE_UP;
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TIM_InitStructure.AutoReloadPreload = DISABLE;
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LHL_TIM_Init(TIM1, &TIM_InitStructure);
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TIM1->CCR1 = uploadCounter;
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TIM1->CNT = 0;
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LHL_TIM_ITConfig(TIM1, TIM_IT_CC1, ENABLE);/* 使能TIM1比较中断CC1 */
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NVIC_EnableIRQ(TIM1_IRQn);
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NVIC_SetPriority(TIM1_IRQn, 1);
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LHL_TIM_Start(TIM1); /* 运行TIM1 */
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}
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/**------------------------------------------------------------------------
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* @brief 通用比较定时器（无电平输出）不重置TIM1->CNT 更新比较值
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* @note 时钟源：APB2_CLK
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* @param uploadCounter: 计数值(1~65535)，需要换算成期望周期 计数值=65535/4000*t
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* @example: ResetTimer1_CC1(327+TIM1->CNT); // 下个20ms进入比较中断
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**/
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void ResetTimer1_CC1( u16 uploadCounter )
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{
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TIM1->CCR1 = uploadCounter;
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TIM1->SR = (uint16_t)~TIM_IT_CC1;
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LHL_TIM_ITConfig(TIM1, TIM_IT_CC1, ENABLE);
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}
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/**------------------------------------------------------------------------
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* @brief 停用定时器
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* @note
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* @param
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* @example
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**/
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void StopTimer1(void)
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{
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LHL_TIM_Stop(TIM1);
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NVIC_DisableIRQ( TIM1_IRQn );
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LHL_TIM_ClearFlag(TIM1, TIM_IT_UPDATE|TIM_IT_CC1|TIM_IT_CC2|TIM_IT_TRIGGER);
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LHL_TIM_ITConfig( TIM1, TIM_IT_UPDATE|TIM_IT_CC1|TIM_IT_CC2|TIM_IT_TRIGGER, DISABLE );
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}
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/*-=====================================================================================================
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//TIMER2
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-=====================================================================================================*/
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/**------------------------------------------------------------------------
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* @brief 通用定时器启动（自适应时钟周期）
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* @note 时钟源：APB1_CLK
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* @param uploadCounter: 期望的周期，单位：毫秒 范围:(1~4000)
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* @example: StartTimer2(10); // 启动10ms周期定时器
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**/
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void StartTimer2_UIE(u16 uploadCounter)
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{
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if(uploadCounter>4000)uploadCounter = 4000;
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if(uploadCounter<= 0)uploadCounter = 1;
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u32 APB1_CLK = LHL_RCC_GetPCLK1Freq();
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u32 prescaler = (APB1_CLK / 16000UL) - 1; //固定分频系数 (APB1_CLK / 32000UL) - 1;
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u32 period =(u32)(16UL * uploadCounter);//动态ARR计数 (uint32_t)(32000UL * uploadCounter) / 1000UL;
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TIM_InitTypeDef TIM_InitStructure;
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TIM_InitStructure.Period = period;
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TIM_InitStructure.Prescaler = prescaler;
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TIM_InitStructure.ClockDivision = TIM_CKD_DIV1;
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TIM_InitStructure.CounterMode = TIM_COUNTERMODE_UP;
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TIM_InitStructure.AutoReloadPreload = ENABLE;
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LHL_TIM_Init(TIM2, &TIM_InitStructure);
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/*使能TIM1更新中断UIE */
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LHL_TIM_ITConfig(TIM2, TIM_IT_UPDATE, ENABLE);
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NVIC_EnableIRQ(TIM2_IRQn);
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NVIC_SetPriority(TIM2_IRQn, 1);
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LHL_TIM_Start(TIM2);
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}
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/**------------------------------------------------------------------------
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* @brief 通用周期定时器（自适应时钟周期）修改周期
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* @note 时钟源：APB1_CLK
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* @param uploadCounter: 期望的周期，单位：毫秒 范围:(1~4000)
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* @example: ResetTimer2_UIE(20); // 定时器周期改为20ms
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**/
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void ResetTimer2_UIE(u16 uploadCounter)
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{
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// 参数检查
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if(uploadCounter>4000)uploadCounter = 4000;
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if(uploadCounter<= 0)uploadCounter = 1;
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// 计算新ARR的值
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u32 period =(u32)(16UL * uploadCounter); //PSC不变，ARR计算与StartTimer1相同
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TIM2->CNT = 0; //先重置计数器 再设置ARR，避免立即溢出
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LHL_TIM_ClearPending(TIM2, TIM_IT_UPDATE);//当前CNT已经接近或超过ARR，这里可能产生更新事件 所以需要先清除标志
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TIM2->ARR = (u16)period ; //修改ARR 如果PSC需要改变，必须停止定时器！
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LHL_TIM_Start(TIM2); //确保定时器启用
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}
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/**------------------------------------------------------------------------
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* @brief 停用定时器
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* @note
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* @param
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* @example
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**/
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void StopTimer2(void)
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{
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LHL_TIM_Stop(TIM2);
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NVIC_DisableIRQ( TIM2_IRQn );
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LHL_TIM_ClearFlag(TIM2, TIM_IT_UPDATE|TIM_IT_CC1|TIM_IT_CC2|TIM_IT_TRIGGER);
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LHL_TIM_ITConfig( TIM2, TIM_IT_UPDATE|TIM_IT_CC1|TIM_IT_CC2|TIM_IT_TRIGGER, DISABLE );
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}
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/**------------------------------------------------------------------------
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* @brief 输出定时器
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* @note 时钟源：APB2_CLK
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* @param uploadCounter: PWM期望的周期，单位：Hz 范围:(1~400)
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duty :PWM占空比 范围:(0-100)
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* @example: StartTimer1_PWM(10,50); // 启动10Hz(100ms)周期定时器,PWM输出占空比50%
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StartTimer1_PWM(400,50); //启动400Hz(2.5ms)周期定时器,PWM输出占空比50%
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**/
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void StartTimer1_PWM(u16 freq_hz , u16 duty)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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TIM_InitTypeDef TIM_InitStructure;
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TIM_PWMInitTypeDef TIM_PWMInitStructure;
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u32 APB2_CLK = LHL_RCC_GetPCLK2Freq();
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u16 period =10000; //固定ARR计数
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u32 prescaler = (APB2_CLK /(period*freq_hz) )-1;
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u16 dutyValue = period*duty/100;
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/* 1. TIM1 通道1 GPIO复用配置 */
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GPIO_InitStructure.Pin = GPIO_PIN_5; // P0.5->TIM1 CHANNEL1
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GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStructure.Current = GPIO_CURRENT_16mA;
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GPIO_InitStructure.Pull = GPIO_NOPULL;
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GPIO_InitStructure.SchmittTrigger = ENABLE;
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GPIO_InitStructure.Alternate = GPIO0_5_AF_TIM1_CH1;
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LHL_GPIO_Init(pGPIO0, &GPIO_InitStructure);
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/* 2. TIM1 时基配置 */
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TIM_InitStructure.Prescaler = prescaler; // 设置定时器时钟
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TIM_InitStructure.Period = period-1; // 设置定时器周期
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TIM_InitStructure.ClockDivision = TIM_CKD_DIV1;
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TIM_InitStructure.CounterMode = TIM_COUNTERMODE_UP;
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TIM_InitStructure.AutoReloadPreload = ENABLE; // 开启ARR预加载
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LHL_TIM_Init(TIM1, &TIM_InitStructure);
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/* 3. TIM1 通道1输出PWM配置 */
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TIM_PWMInitStructure.Pulse = dutyValue; // 设置占空比
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TIM_PWMInitStructure.PWMMode = TIM_PWMMODE_PWM1; // PWM模式1
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TIM_PWMInitStructure.PWMPolarity = TIM_PWMPOLARITY_ACTIVE_HIGH; // PULSE期间输出有效电平
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TIM_PWMInitStructure.PWMPreload = ENABLE; // 开启CCR预加载
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TIM_PWMInitStructure.PWMFastMode = DISABLE;
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LHL_TIM_PWM_Init(TIM1, &TIM_PWMInitStructure, TIM_CHANNEL_1);
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/* 4. 开启TIM1 的PWM输出 */
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LHL_TIM_Start(TIM1);
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}
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void ResetTimer1_PWM(u16 duty)
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{
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//限幅
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if(duty > 100)duty = 100;
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if(duty < 0)duty = 0;
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u16 dutyValue = 100*duty ; //10000*duty/100;
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//更新占空比
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LHL_TIM_PWM_SetDutyCycle(TIM1, dutyValue, TIM_CHANNEL_1);
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}
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/*-=====================================================================================================
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//定时器中断回调
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-=====================================================================================================*/
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/**------------------------------------------------------------------------
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* @brief 定时器回调函数注册
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* @note
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* @param TIM_TypeDef *timer：pTIM1 pTIM2 ； timer_irq_callback_t tim_irq_callback ：自定义回调函数名
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* @example: Timer_register_irq_callback(pTIM1,callback1);
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**/
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static timer_irq_callback_t tim1_irq_callback ,tim2_irq_callback;
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void Timer_register_irq_callback(TIM_TypeDef *timer, timer_irq_callback_t tim_irq_callback)
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{
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if(timer == TIM1) {tim1_irq_callback = tim_irq_callback; NVIC_EnableIRQ(TIM1_IRQn);}
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else if(timer == TIM2) {tim2_irq_callback = tim_irq_callback; NVIC_EnableIRQ(TIM2_IRQn);}
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}
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/**------------------------------------------------------------------------
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* @brief 低功耗定时器1中断函数
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* @note 中断类型：
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* TIM_IT_UPDATE
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* TIM_IT_CC1
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* TIM_IT_CC2
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* TIM_IT_TRIGGER
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**/
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void TIM1_IRQHandler(void)
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{
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uint16_t irq_type = TIM1->SR ; //中断标志
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if (irq_type & TIM_IT_CC1) { // 处理比较中断
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if (tim1_irq_callback != NULL) tim1_irq_callback();// 调用用户注册的回调函数
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}
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TIM1->SR = (uint16_t)~irq_type; //清除中断标志
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/*
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if (LHL_TIM_GetPending(TIM1, TIM_IT_UPDATE)== SET) // 判断是否TIM1 Update中断
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{
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LHL_TIM_ClearPending(TIM1, TIM_IT_UPDATE); // 清除中断标志
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}
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if (LHL_TIM_GetPending(TIM1, TIM_IT_CC1) == SET) // 判断是否TIM1 CC1中断
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{
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LHL_TIM_ClearPending(TIM1, TIM_IT_CC1); // 清除中断标志
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}
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if (LHL_TIM_GetPending(TIM1, TIM_IT_CC2) == SET)
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{
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LHL_TIM_ClearPending(TIM1, TIM_IT_CC2);
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}
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if (LHL_TIM_GetPending(TIM1, TIM_IT_TRIGGER) == SET)
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{
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LHL_TIM_ClearPending(TIM1, TIM_IT_TRIGGER);
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}
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*/
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}
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/**------------------------------------------------------------------------
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* @brief 低功耗定时器2中断函数
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**/
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void TIM2_IRQHandler(void)
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{
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uint16_t irq_type = TIM2->SR ; //中断标志
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if (tim2_irq_callback != NULL) tim2_irq_callback();// 调用用户注册的回调函数
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TIM2->SR = (uint16_t)~irq_type; //清除中断标志
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}
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