TIM_INT_CC1
时间: 2023-07-14 11:00:06 浏览: 63
TIM_INT_CC1是一个中断事件,通常与定时器的比较捕获功能相关。在某些定时器中,可以配置一个或多个比较捕获通道(CC1、CC2等),用于捕获定时器计数器的值并触发相应的中断。当定时器计数器的值与比较寄存器中的值相等时,就会触发TIM_INT_CC1中断。具体的实现代码可能会根据不同的硬件平台和编程环境有所不同。如果你需要更详细的信息,请提供更多的背景和上下文。
相关问题
使用hal库实现TIM1_CH4触发ADC采样
以下是使用STM32 HAL库实现TIM1_CH4触发ADC采样的代码:
```c
#include "stm32f4xx_hal.h"
ADC_HandleTypeDef hadc1;
TIM_HandleTypeDef htim1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM1_Init(void);
static void MX_ADC1_Init(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_TIM1_Init();
MX_ADC1_Init();
HAL_TIM_Base_Start(&htim1);
HAL_ADC_Start(&hadc1);
while (1)
{
HAL_TIM_GenerateEvent(&htim1, TIM_EVENT_TRIGGER_OC4);
HAL_ADC_PollForConversion(&hadc1, 100); //等待ADC采样完成
uint16_t adc_val = HAL_ADC_GetValue(&hadc1);
//处理采样值
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
static void MX_ADC1_Init(void)
{
ADC_ChannelConfTypeDef sConfig = {0};
__HAL_RCC_ADC1_CLK_ENABLE();
hadc1.Instance = ADC1;
hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
hadc1.Init.Resolution = ADC_RESOLUTION_12B;
hadc1.Init.ScanConvMode = DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC4;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
hadc1.Init.DMAContinuousRequests = DISABLE;
hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
sConfig.Channel = ADC_CHANNEL_0;
sConfig.Rank = 1;
sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
}
static void MX_TIM1_Init(void)
{
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_OC_InitTypeDef sConfigOC = {0};
__HAL_RCC_TIM1_CLK_ENABLE();
htim1.Instance = TIM1;
htim1.Init.Prescaler = 0;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 65535;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_OC_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sConfigOC.OCMode = TIM_OCMODE_TIMING;
sConfigOC.Pulse = 0;
sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
if (HAL_TIM_OC_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_OC4REF;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
}
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Pin = GPIO_PIN_9;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF1_TIM1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
void Error_Handler(void)
{
while (1)
{
}
}
```
在上面的代码中,我们使用了TIM1_CH4作为ADC采样的外部触发源。首先,我们初始化了TIM1_CH4和ADC1,并启动了TIM1和ADC1。在主循环中,我们使用HAL_TIM_GenerateEvent函数触发TIM1_CH4输出,并使用HAL_ADC_PollForConversion函数等待ADC采样完成。最后,我们使用HAL_ADC_GetValue函数获取采样值并进行处理。需要注意的是,我们使用了HAL_ADC_Init函数的ExternalTrigConvEdge和ExternalTrigConv参数来设置ADC的触发源为TIM1_CH4。
同时,我们在MX_TIM1_Init函数中设置了TIM1_CH4的输出模式为TIM_OCMODE_TIMING,这意味着TIM1_CH4输出的脉冲宽度为0,只有上升沿触发ADC采样。我们还设置了TIM1_CH4的输出触发源为TRGO,这将使得TIM1_CH4的输出触发TIM1的更新事件,并将更新事件作为外部触发源,以触发ADC采样。
需要注意的是,上面的代码是基于STM32F4系列的,如果您使用的是其他型号的STM32芯片,代码可能会有所不同。
TIM2_CH1_CAPTURE_STA
TIM2_CH1_CAPTURE_STA是一个用于记录TIM2通道1输入捕获状态的变量。在使用STM32的输入捕获功能时,我们需要在捕获到边沿信号时记录当前定时器的值,以便后续计算时间差或者频率等信息。TIM2_CH1_CAPTURE_STA通常是一个32位的变量,其中高16位用于记录捕获次数,低16位用于记录捕获状态。具体的定义和使用可以参考以下代码:
```c
#define TIM2_CH1_CAPTURE_STA_COUNT 0XFFFF //捕获计数器的最大值
#define TIM2_CH1_CAPTURE_STA_RISING 0X01 //上升沿捕获标志
#define TIM2_CH1_CAPTURE_STA_FALLING 0X02 //下降沿捕获标志
uint32_t TIM2_CH1_CAPTURE_STA = 0; //捕获状态变量
uint32_t TIM2_CH1_CAPTURE_VAL; //捕获值
void TIM2_IRQHandler(void)
{
if ((TIM2_CH1_CAPTURE_STA & TIM2_CH1_CAPTURE_STA_FALLING) == 0) //还未捕获到下降沿
{
if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET) //捕获到上升沿
{
TIM2_CH1_CAPTURE_STA |= TIM2_CH1_CAPTURE_STA_RISING; //标记上升沿已经被捕获
TIM_SetCounter(TIM2, 0); //清空定时器计数器
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1); //清除中断标志位
}
}
else //已经捕获到上升沿
{
TIM2_CH1_CAPTURE_VAL = TIM_GetCapture1(TIM2); //获取捕获值
TIM2_CH1_CAPTURE_STA |= TIM2_CH1_CAPTURE_STA_FALLING; //标记下降沿已经被捕获
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1); //清除中断标志位
}
}
int main(void)
{
//初始化TIM2通道1输入捕获
TIM_ICInitTypeDef TIM2_ICInitStructure;
TIM2_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM2_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM2_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM2_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM2_ICInitStructure.TIM_ICFilter = 0x00;
TIM_ICInit(TIM2, &TIM2_ICInitStructure);
//使能TIM2通道1输入捕获中断
TIM_ITConfig(TIM2, TIM_IT_CC1, ENABLE);
//启动TIM2
TIM_Cmd(TIM2, ENABLE);
while (1)
{
if ((TIM2_CH1_CAPTURE_STA & TIM2_CH1_CAPTURE_STA_FALLING) != 0) //已经捕获到下降沿
{
uint32_t capture_time = TIM2_CH1_CAPTURE_VAL + TIM2_CH1_CAPTURE_STA_COUNT * TIM_GetCounter(TIM2); //计算捕获时间
uint32_t capture_freq = SystemCoreClock / capture_time; //计算捕获频率
TIM2_CH1_CAPTURE_STA = 0; //清空捕获状态
}
}
}
```