main.c
/* USER CODE BEGIN Header */
/********************************************************************************* @file : main.c* @brief : Main program body******************************************************************************* @attention** Copyright (c) 2025 STMicroelectronics.* All rights reserved.** This software is licensed under terms that can be found in the LICENSE file* in the root directory of this software component.* If no LICENSE file comes with this software, it is provided AS-IS.********************************************************************************/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "tim.h"
#include "gpio.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "headfile.h"
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD *//* 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 *//* 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_ADC2_Init();MX_TIM2_Init();MX_TIM17_Init();MX_TIM4_Init();MX_TIM6_Init();MX_TIM3_Init();/* USER CODE BEGIN 2 */LCD_Init();LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);//LCD初始化函数HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2);//PWM使能TIM2->CCR2 = 50;//占空比为50%HAL_TIM_IC_Start_IT(&htim17,TIM_CHANNEL_1);//中断使能HAL_TIM_Base_Start_IT(&htim3);HAL_TIM_Base_Start_IT(&htim4);HAL_TIM_Base_Start_IT(&htim6);//3个定时器开启/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){ led_init();//led初始化全灭key_scan();//按键扫描函数if(switch_state == 0){lcd_show();//数据界面}else if(switch_state == 1){lcd_show1();//参数界面}else {lcd_show2();//统计界面}/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* 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_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);/** Initializes the RCC Oscillators according to the specified parameters* in the RCC_OscInitTypeDef structure.*/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 = RCC_PLLM_DIV1;RCC_OscInitStruct.PLL.PLLN = 10;RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK){Error_Handler();}/** Initializes the CPU, AHB and APB buses 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_DIV1;RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK){Error_Handler();}
}/* USER CODE BEGIN 4 *//* 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 */__disable_irq();while (1){}/* 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,ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) *//* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
fun.c
#include "headfile.h"uint8_t R=1, K=1,P;
char text[20];
uint32_t fre,capture_value;//用于PA7引脚测量频率
double V,V_max,V_min;
uint8_t Cnt;//控制闪烁时间为5s//电压测量函数，用于R37控制占空比
double get_vol(ADC_HandleTypeDef *hadc)
{if(B4_flag==0){HAL_ADC_Start(hadc);}//ADC开启函数uint32_t adc_value = HAL_ADC_GetValue(hadc);//ADC读取函数return 3.3*adc_value/4096;
}void lcd_show()//数据
{//V计算公式V=2*3.14*R*fre/(100*K);//获取V_max和V_min的值if(V_max<=V)V_max=V;if(V_min>=V)V_min=V;if(V_min == 0)V_min = V;TIM2->CCR2 = get_vol(&hadc2)*100/3.3;//获取CCR2P=(TIM2->CCR2)*100/(TIM2->ARR+1);//占空比计算公式if(P<=10)P=10;if(P>=85)P=85;//限制占空比在10%到85%之间sprintf(text," DATA ");LCD_DisplayStringLine(Line0,(uint8_t *)text);if(fre>7500){sprintf(text," M = H ");LCD_DisplayStringLine(Line1,(uint8_t *)text); }if(fre <4500){sprintf(text," M = L ");LCD_DisplayStringLine(Line1,(uint8_t *)text); }sprintf(text," P = %d%% ",P);LCD_DisplayStringLine(Line2,(uint8_t *)text);sprintf(text," V = %.1lf ",V);LCD_DisplayStringLine(Line3,(uint8_t *)text);sprintf(text," fre = %d ",fre);LCD_DisplayStringLine(Line4,(uint8_t *)text);
}void lcd_show1()//参数
{sprintf(text," PARA ");LCD_DisplayStringLine(Line0,(uint8_t *)text);sprintf(text," R = %d ",R);LCD_DisplayStringLine(Line1,(uint8_t *)text); sprintf(text," K = %d ",K);LCD_DisplayStringLine(Line2,(uint8_t *)text);sprintf(text," ");LCD_DisplayStringLine(Line3,(uint8_t *)text);sprintf(text," ");LCD_DisplayStringLine(Line4,(uint8_t *)text);
}void lcd_show2()//统计
{sprintf(text," RECD ");LCD_DisplayStringLine(Line0,(uint8_t *)text);sprintf(text," N = %d ",nCnt);LCD_DisplayStringLine(Line1,(uint8_t *)text); sprintf(text," MH = %.1f ",V_max);LCD_DisplayStringLine(Line2,(uint8_t *)text);sprintf(text," ML = %.1f ",V_min);LCD_DisplayStringLine(Line3,(uint8_t *)text);sprintf(text," ");LCD_DisplayStringLine(Line4,(uint8_t *)text);
}//输入捕获回调函数
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{if(htim->Instance == TIM17){capture_value = TIM17->CCR1;TIM17->CNT = 0;fre=80000000/(80*capture_value);}
}//定时器中断回调函数
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)//切换高低频模式
{if(htim->Instance == TIM4){if(B2_flag==1){//频率从低频切换到高频TIM2->PSC -=5;if(TIM2->PSC <100)TIM2->PSC=100;}else if(B2_flag==0){//频率从高频切换到低频TIM2->PSC +=5; if(TIM2->PSC >200)TIM2->PSC=200;}}if(htim->Instance == TIM6)//控制LED2闪烁{if(led_flag==1){//按下B2后才会进入定时器6，才会让LED2闪烁if(Cnt++==50){Cnt=0;led_flag=0;chose_flag=0;}HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_9,0); HAL_GPIO_WritePin(GPIOC,GPIO_PIN_10,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_11,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_12,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,1); HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_15,1);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);} }
}key.c
#include "headfile.h"uint8_t B1_state;
uint8_t B2_state;
uint8_t B3_state;
uint8_t B4_state;uint8_t B1_last_state;
uint8_t B2_last_state;
uint8_t B3_last_state;
uint8_t B4_last_state;uint8_t switch_state;//界面选择
uint8_t switch_flag;//参数界面切换控制R和K
uint8_t B2_flag;//低频高频模式切换
uint8_t B4_flag;//B4长短按uint8_t nCnt; //高低频切换总次数
uint8_t chose_flag;//控制切换频率时LED2的闪烁时间void key_scan()
{B1_last_state=B1_state;B2_last_state=B2_state;B3_last_state=B3_state;B4_last_state=B4_state;B1_state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0);B2_state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1);B3_state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2);B4_state=HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0); if(B1_state==0&&B1_last_state==1) //B1{//切换界面HAL_Delay(20);switch_state++;switch_state=switch_state%3;}if(switch_state==0){led_show(1,1);//B2选择高频和低频// TIM2->ARR = 499; //可调节频率//fre=80000000/(ARR+1)(PSC+1)//PSC+1=800,fre=100000/(ARR+1),初始设置ARR+1为100，则fre=1000Hz//占空比：CRR/(ARR+1)if(B4_state==0&&B4_last_state==1){//按键B4按下//b4长按2s锁定占空比功能，输出信号占空比不随R37的控制，锁定后再短按B4，实现解锁，恢复R37控制TIM3->CNT = 0;} else if(B4_state==0&&B4_last_state==0)//按键B4一直长按{ if(TIM3->CNT >= 10000 ){B4_flag=1;//长按，锁定R37，控制LED3亮}}else if(B4_state==1&&B4_last_state==0)//按键B4松开{ if(TIM3->CNT < 10000){B4_flag = 0;//短按，解锁R37，关闭LED3}} if(B2_state==0&&B2_last_state==1){//数据界面下切换高低频if(chose_flag == 0){nCnt++;B2_flag++;B2_flag%=2; led_flag++;chose_flag=1;}}}
// if(B2_flag==1){//高速状态下
// //配置一个定时器，让其在5s内频率从4000Hz升高到8000Hz
// if(TIM2->PSC <100)
// TIM2->PSC=100;// if(B2_flag==0){//低速状态下
//配置一个定时器，让其在5s内频率从4000Hz升高到8000Hz
//但是步进小于200Hz，5s内要变化20次，1s变化4次，频率为4Hz
// TIM2->PSC +=5;
// if(TIM2->PSC > 200)
// TIM2->PSC=200;if(switch_state==1){if(B2_state==0&&B2_last_state==1) //B2{HAL_Delay(20);switch_flag++;//R，K参数控制选择switch_flag%=2;}if(switch_flag == 0){if(B3_state==0&&B3_last_state==1) //B3控制R+{HAL_Delay(20);R++;if(R>10)R=1;}if(B4_state==0&&B4_last_state==1) //B4控制R-{HAL_Delay(20);R--;if(R<1)R=10;}} if(switch_flag == 1){if(B3_state==0&&B3_last_state==1) //B3控制K+{HAL_Delay(20);K++;if(K>10)K=1;}if(B4_state==0&&B4_last_state==1) //B4控制K-{HAL_Delay(20);K--;if(K<1)K=10;} }}/*B4锁定时LED3亮*/if(B4_flag == 1){led_show(3,1);}else{led_show(3,0); }
}led.c
#include "headfile.h"uint8_t led_flag;void led_show(uint8_t led,uint8_t mode)
{HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);if(mode){HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8 << (led-1),GPIO_PIN_RESET);}else{HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8 << (led-1),GPIO_PIN_SET);}HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
}void led_init(){HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_9,1); HAL_GPIO_WritePin(GPIOC,GPIO_PIN_10,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_11,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_12,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_13,1); HAL_GPIO_WritePin(GPIOC,GPIO_PIN_14,1);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_15,1);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
}fun.h
#ifndef _fun_h
#define _fun_hvoid lcd_show(void);
void lcd_show1(void);
void lcd_show2(void);
double get_vol(ADC_HandleTypeDef *hadc);extern uint8_t R;
extern uint8_t K;
extern double V,V_max,V_min;
extern uint32_t fre;
#endifkey.h
#ifndef _key_h
#define _key_h
#include "headfile.h"void key_scan(void);
extern uint8_t B2_flag;
extern uint8_t switch_state;
extern uint8_t switch_flag;
extern uint8_t nCnt;
extern uint8_t B4_flag;
extern uint8_t chose_flag;#endif
led.h
#ifndef _led_h
#define _led_h
#include "headfile.h"extern uint8_t led_flag;
void led_show(uint8_t led,uint8_t state);
void led_init(void);
#endif
headfile.h
#ifndef _headfile_h
#define _headfile_h#include "stm32g4xx.h" // Device header
#include <stdio.h>
#include <stdint.h>
#include <string.h>#include "key.h"
#include "lcd.h"
#include "fun.h"
#include "adc.h"
#include "tim.h"
#include "led.h"#endif
