TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; TIM_BDTRInitTypeDef TIM1_BDTRInitStructure; NVIC_InitTypeDef NVIC_InitStructure;
时间: 2024-04-24 18:21:17 浏览: 31
在你提供的代码中,这些是一些用于配置定时器(TIM)和中断控制器(NVIC)的结构体。
1. `TIM_TimeBaseInitTypeDef` 结构体用于配置定时器的基本参数,例如预分频器、计数模式、自动重装载寄存器等。
2. `TIM_OCInitTypeDef` 结构体用于配置定时器的输出比较功能,用于生成PWM波形或其他定时器相关的输出信号。
3. `TIM_BDTRInitTypeDef` 结构体用于配置定时器的高级控制参数,例如死区时间、自动输出使能等。
4. `NVIC_InitTypeDef` 结构体用于配置中断控制器的中断参数,包括中断通道、优先级等。
这些结构体通常在使用定时器和中断功能时需要进行初始化和配置。具体的代码实现会根据使用的芯片和开发环境而有所不同。
请注意,以上只是结构体的定义,并没有进行具体的配置和初始化。如果你需要进一步了解如何使用这些结构体来配置定时器和中断,请提供更多上下文或相关代码。
相关问题
帮我转换成HAL库 void TIM2_PWM_Output(float Duty , uint32_t Frequency) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); /* GPIOA clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO ,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Time base configuration */ TIM_TimeBaseStructure.TIM_Period = (1000000/Frequency)-1; //ARR = (TIM3 counter clock /Frequency)-1 TIM_TimeBaseStructure.TIM_Prescaler = 71; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); /* PWM1 Mode configuration: Channel3 */ TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; TIM_OCInitStructure.TIM_Pulse = ((1000000/Frequency)-1)*Duty; TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; TIM_OC3Init(TIM2, &TIM_OCInitStructure); TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM2, ENABLE); /* TIM3 enable counter */ TIM_Cmd(TIM2, ENABLE); }
对应的HAL库代码如下:
```c
#include "stm32f1xx_hal.h"
TIM_HandleTypeDef htim2;
void TIM2_PWM_Output(float Duty , uint32_t Frequency)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
__HAL_RCC_TIM2_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
htim2.Instance = TIM2;
htim2.Init.Prescaler = 71;
htim2.Init.CounterMode = TIM_COUNTERMODE_UP;
htim2.Init.Period = (1000000/Frequency)-1;
htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
HAL_TIM_Base_Init(&htim2);
sConfigOC.OCMode = TIM_OCMODE_PWM1;
sConfigOC.Pulse = ((1000000/Frequency)-1)*Duty;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
HAL_TIM_PWM_ConfigChannel(&htim2, &sConfigOC, TIM_CHANNEL_3);
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
HAL_TIMEx_MasterConfigSynchronization(&htim2, &sMasterConfig);
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_3);
}
```
注意,此处假设你使用的是STM32F1系列的芯片,需要包含"stm32f1xx_hal.h"头文件。请根据实际情况进行调整。
编制测试TIM1定时100ms的精确时间程序
以下是一个简单的测试TIM1定时100ms的精确时间的程序示例,使用的是STM32F4 Discovery开发板:
```c
#include "stm32f4xx.h"
volatile uint32_t start_time = 0;
volatile uint32_t end_time = 0;
volatile uint32_t elapsed_time = 0;
void TIM1_IRQHandler(void)
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM1, TIM_IT_Update);
if (start_time == 0)
{
start_time = TIM_GetCapture1(TIM1);
}
else
{
end_time = TIM_GetCapture1(TIM1);
elapsed_time = end_time - start_time;
start_time = 0;
end_time = 0;
}
}
}
int main(void)
{
// Enable TIM1 clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
// Configure TIM1 as a timer with 100kHz frequency
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 999;
TIM_TimeBaseStructure.TIM_Prescaler = 83;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
// Enable TIM1 update interrupt
TIM_ITConfig(TIM1, TIM_IT_Update, ENABLE);
// Enable TIM1 capture compare channel 1
TIM_OCInitTypeDef TIM_OCInitStructure;
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Disable);
// Enable TIM1 counter
TIM_Cmd(TIM1, ENABLE);
// Enable TIM1 interrupt in NVIC
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_TIM10_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
while (1)
{
// Record start time
start_time = TIM_GetCapture1(TIM1);
// Run some code to be timed
// ...
// Record end time and calculate elapsed time
end_time = TIM_GetCapture1(TIM1);
elapsed_time = end_time - start_time;
// Do something with elapsed time
// ...
}
}
```
在上面的代码中,我们配置了TIM1作为一个定时器,使用的预分频值为83,时钟源为84MHz,计数器的频率为100kHz。在TIM1的溢出中断服务函数中,记录了当前时间的值,并计算了两次中断之间的时间差,即为定时器精确时间的值。在主程序中,我们使用了两次定时器的捕获功能来记录开始时间和结束时间,并计算了它们的时间差。
请注意,上面的程序示例仅供参考,实际应用中可能需要根据具体的需求进行修改。
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