标题STM32Cube配置等精度测频和测相位差

一、测量精度：

1、频率精度

频率测量、周期测量的信号频率范围扩展为1Hz～20MHz(这里由于信号发生器最高产生20MHz频率，所以更高频率未尝试,预计更高可达到50MHz),频率测量、周期测量的测量误差为0.000001.

2、相位差精度

相位差测量，可以达到量程：0～360°；测量准确度：1°；分辨率：0.1°的题目要求

二、项目配置

1、时钟配置

stm32F429最高主频为168MHz

配置时钟源

2、定时器配置

Time1配置
Time2配置
Time3配置
Time4配置
Time5配置
Time8配置
Time9配置
Time12配置
定时器优先级配置

3、生成工程配置

3、串口配置

配置两个串口，一个收一个发，防止数据传输时大彩屏卡死；

三、Keil5编写代码

1、main函数代码

/* USER CODE BEGIN Header */
/********************************************************************************* @file           : main.c* @brief          : Main program body******************************************************************************* @attention** <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.* All rights reserved.</center></h2>** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:*                        opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "base.h"       //包含基本按键、灯、位带操作等
#include "stdio.h"
#include "head_define.h"
#include "Algorithm.h"
#include "arm_math.h"
#include "hmi_user_uart.h"
#include "cmd_process.h"
#include "outputdata.h"
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
#define Period_Num 1
/* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD *//* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*//* USER CODE BEGIN PV *//* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//*测频测周变量定义*/
uint8_t     TIM4CH1_CAPTURE_STA=0X80;      //输入捕获状态
uint32_t    TIM5_COUNTER_VAL[Period_Num];           //定时器1计数组，测系统时钟
uint32_t    TIM2_COUNTER_VAL[Period_Num];          //定时器2计数组，被测信号周期
float       TIM5_COUNTER_Val;               //定时器1计数值，测系统时钟
float       TIM2_COUNTER_Val;               //定时器2计数值，被测信号周期
float       TIM_FREQ;                       //频率值
float       TIM_period;                     //周期值
uint8_t     TIM4CH1_CAPTURE_GATE=0;         //预设闸门标志位
uint8_t     TIM4CH1_CAPTURE_STB=0;          //数组存满标志位
static uint8_t     i,j=0;                       //数组用
uint32_t    TIM5_COUNTER_TEMP;              //定时器1计数滤波
uint32_t    TIM2_COUNTER_TEMP;              //定时器2计数滤波
float       TIM_FREQ2;
float       TIM_FREQ3;
float       TIM_FERQ[5];/*相位变量定义*/
uint32_t capture_period=0,capture_sta=0,capture_period1=0,capture_sta1=0;
float Phase=0,capture_period2=0;
//校准后的频率
/* USER CODE END 0 *//*** @brief  The application entry point.* @retval int*/
int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_TIM1_Init();MX_TIM2_Init();MX_TIM3_Init();MX_TIM4_Init();MX_TIM5_Init();MX_USART1_UART_Init();MX_USART2_UART_Init();MX_TIM8_Init();MX_TIM9_Init();MX_TIM12_Init();/* USER CODE BEGIN 2 */TFT_Init();    HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);  //使能PWM波HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);  //使能PWM波 HAL_TIM_IC_Start_IT(&htim4,TIM_CHANNEL_1); //使能TIM4输入捕获中断__HAL_TIM_ENABLE_IT(&htim4, TIM_CHANNEL_1); //使能更新中断HAL_TIM_Base_Start_IT(&htim1);             //使能TIM5定时器中断HAL_TIM_IC_Start_IT(&htim9,TIM_CHANNEL_1);HAL_TIM_IC_Start_IT(&htim12,TIM_CHANNEL_1);
//  HAL_TIM_Base_Start_IT(&htim1);//使能定时器1中断__HAL_TIM_SET_COUNTER(&htim5,0);      //定时器1清零__HAL_TIM_SET_COUNTER(&htim2,0);      //定时器2清零 TIM4CH1_CAPTURE_GATE = 1;               //开启预设闸门/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */capture_period2=capture_period/2.0;Phase=((capture_period1-capture_period2)/capture_period1)*360.0+21;SetTFTText(0,3,"%.1f度",Phase);SetTFTText(0,5,"%.2f",10.2);HAL_Delay(100);if(TIM4CH1_CAPTURE_STB)//判断数组是否存满{     TIM5_COUNTER_Val = (float) TIM5_COUNTER_TEMP / Period_Num;    //定时器1计数滤波（100个数组求平均）TIM2_COUNTER_Val = (float) TIM2_COUNTER_TEMP / Period_Num;    //定时器2计数滤波 (100个数组求平均）      TIM_FREQ = 1000.0*(TIM2_COUNTER_Val*3000.0)/TIM5_COUNTER_Val; //定时器2计数值*定时器1频率/定时器1计数值if(TIM_FREQ<=300){TIM_FREQ2=TIM_FREQ*1.00020;TIM_period=1.0/TIM_FREQ2;SetTFTText(0,1,"%.6fHz",TIM_FREQ2);SetTFTText(0,2,"%.6fs",TIM_period);}else{TIM_FREQ2=TIM_FREQ*0.9999480027038594;TIM_period=1.0/TIM_FREQ2;SetTFTText(0,1,"%.6fMHz",TIM_FREQ2/1000000.0);SetTFTText(0,2,"%.6fus",TIM_period*1000000.0);}TIM5_COUNTER_TEMP = 0;        //定时器5计数值清零TIM2_COUNTER_TEMP = 0;        //定时器2计数值清零TIM4CH1_CAPTURE_STB = 0;       //数组存满标志位TIM4CH1_CAPTURE_STA |= 0X80;    //输入捕获状态HAL_TIM_IC_Start_IT(&htim4,TIM_CHANNEL_1);//使能TIM4输入捕获中断}  }/* USER CODE END 3 */
}/*** @brief System Clock Configuration* @retval None*/
void SystemClock_Config(void)
{RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};/** Configure the main internal regulator output voltage */__HAL_RCC_PWR_CLK_ENABLE();__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);/** Initializes the CPU, AHB and APB busses clocks */RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;RCC_OscInitStruct.HSEState = RCC_HSE_ON;RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;RCC_OscInitStruct.PLL.PLLM = 25;RCC_OscInitStruct.PLL.PLLN = 336;RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;RCC_OscInitStruct.PLL.PLLQ = 4;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB busses clocks */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();}
}/* USER CODE BEGIN 4 */
//定时器TIM4输入捕获中断处理回调函数，该函数在HAL_TIM_IRQHandler中会被调用
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)//捕获中断发生时执行
{    //***********************************************************************//测频率if(TIM4CH1_CAPTURE_GATE==0){   if(TIM4CH1_CAPTURE_STA&0X40)    //闸门关闭后第二次捕获到一个上升沿      {                         TIM4CH1_CAPTURE_STA = 0X80;      //标记成功捕获到闸门的一次高电平脉宽TIM5_COUNTER_VAL[i] = __HAL_TIM_GET_COUNTER(&htim5); //获取定时器1计数值TIM2_COUNTER_VAL[i] = __HAL_TIM_GET_COUNTER(&htim2); //获取定时器2计数值TIM5_COUNTER_TEMP += TIM5_COUNTER_VAL[i];TIM2_COUNTER_TEMP += TIM2_COUNTER_VAL[i];i++;if(i == Period_Num)//100个闸门周期{                        i = 0;TIM4CH1_CAPTURE_STB = 1;//数组存满标志位TIM4CH1_CAPTURE_STA = 0;//标记捕获到了上升沿状态位清零HAL_TIM_IC_Stop_IT(&htim4,TIM_CHANNEL_1);  //关闭输入捕获}                 HAL_TIM_Base_Stop(&htim5);            //关闭定时器5HAL_TIM_Base_Stop(&htim2);            //关闭定时器2   __HAL_TIM_SET_COUNTER(&htim5,0);      //定时器5清零__HAL_TIM_SET_COUNTER(&htim2,0);      //定时器2清零                }}if(TIM4CH1_CAPTURE_GATE==1){if(TIM4CH1_CAPTURE_STA&0X80)//第一次捕获上升沿{TIM4CH1_CAPTURE_STA = 0X40;      //标记捕获到了上升沿开始计数HAL_TIM_Base_Start(&htim5);     //使能定时器1，对标准信号一直计数HAL_TIM_Base_Start(&htim2);     //使能定时器2，对被测信号一直计数}} ***********************************************************************//测相位 if(htim->Instance==TIM9){if(htim->Channel==HAL_TIM_ACTIVE_CHANNEL_1){if(!capture_sta){__HAL_TIM_SET_COUNTER(&htim9,0);}}     }if(htim->Instance==TIM12){if(htim->Channel==HAL_TIM_ACTIVE_CHANNEL_1){HAL_TIM_IC_Stop_IT(&htim9,TIM_CHANNEL_1);capture_period=__HAL_TIM_GET_COMPARE(&htim9,TIM_CHANNEL_1);  if(!capture_sta1){     __HAL_TIM_SET_COUNTER(&htim12,0);                capture_sta1=1;            }else{HAL_TIM_IC_Start_IT(&htim9,TIM_CHANNEL_1);__HAL_TIM_SET_COUNTER(&htim9,0);capture_period1=__HAL_TIM_GET_COMPARE(&htim12,TIM_CHANNEL_1);  capture_sta1=0;}}} }//定时器TIM5溢出中断处理回调函数
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{if(TIM1 == htim->Instance){ PCout(9)=~PCout(9);if(TIM4CH1_CAPTURE_GATE){TIM4CH1_CAPTURE_GATE = 0;}else {TIM4CH1_CAPTURE_GATE = 1;}}}    /* USER CODE END 4 *//*** @brief  This function is executed in case of error occurrence.* @retval None*/
void Error_Handler(void)
{/* USER CODE BEGIN Error_Handler_Debug *//* User can add his own implementation to report the HAL error return state *//* USER CODE END Error_Handler_Debug */
}#ifdef  USE_FULL_ASSERT
/*** @brief  Reports the name of the source file and the source line number*         where the assert_param error has occurred.* @param  file: pointer to the source file name* @param  line: assert_param error line source number* @retval None*/
void assert_failed(uint8_t *file, uint32_t line)
{ /* USER CODE BEGIN 6 *//* User can add his own implementation to report the file name and line number,tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

2、大彩屏

3、项目接线连接

需要将Time3的CH3连接到Time4中，否则无法测量。

4、项目工程代码

如需项目工程代码，请关注公众号：漂流小江，在公众号中即可获取代码

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