【STM32G431RBTx】备战蓝桥杯嵌入式→决赛试题→第七届
文章目录
-
- 前言
- 一、题目
- 二、模块初始化
- 三、代码实现
-
- interrupt.h:
- interrupt.h:
- main.h:
- main.h:
- 四、完成效果
- 五、总结
前言
无
一、题目
二、模块初始化
1.LCD这里不用配置，直接使用提供的资源包就行
2.ADC:开启ADCsingle-ended
3.LED:开启PC8-15,PD2输出模式就行了。
4.定时器:TIM3(按键消抖定时器):PSC:80-1,ARR:10000-1，TIM17(输入捕获定时器):PSC:80,ARR:65535，TIM2CH2(PWM输出定时器):PSC:800-1,ARR:100-1
5.i2c:设置PB6,PB7为GPIO_Output模式即可
6.打开串口串行输出
三、代码实现
bsp组中共有:
interrupt.h:
#ifndef __INTERRUPT_H__
#define __INTERRUPT_H__
#include "main.h"
#include "stdbool.h"
struct keys
{
bool key_sta;
unsigned char key_judge;
bool single_flag;
unsigned int key_time;
bool long_flag;
};
#endif
interrupt.h:
#include "interrupt.h"
struct keys key[4] = {0, 0, 0, 0, 0};
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef * htim)
{
if(htim->Instance == TIM3)
{
key[0].key_sta = HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_0);
key[1].key_sta = HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_1);
key[2].key_sta = HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_2);
key[3].key_sta = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);
for(unsigned char i = 0; i < 4; i++)
{
switch(key[i].key_judge)
{
case 0:
{
if(key[i].key_sta == 0)
{
key[i].key_time = 0;
key[i].key_judge = 1;
}
break;
}
case 1:
{
if(key[i].key_sta == 0)
{
key[i].key_judge = 2;
}
else
{
key[i].key_judge = 0;
}
break;
}
case 2:
{
if(key[i].key_sta == 1)
{
key[i].key_judge = 0;
if(key[i].key_time < 80)
{
key[i].single_flag = 1;
}
}
else
{
key[i].key_time++;
if(key[i].key_time >= 80)
{
key[i].long_flag = 1;
}
}
break;
}
}
}
}
}
/* Captured Values */
uint32_t uwIC1Value1_T17CH1 = 0;
uint32_t uwIC1Value2_T17CH1 = 0;
uint32_t uwLowCapture_T17CH1 = 0;
uint32_t uwHighCapture_T17CH1 = 0;
/* Capture index */
uint16_t uhCaptureIndex_T17CH1 = 0;
/* Frequency Value */
uint32_t uwFrequency_T17CH1 = 0;
double uwDuty_T17CH1 = 0;
void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM17)
{
if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
{
if(uhCaptureIndex_T17CH1 == 0)
{
/* Get the 1st Input Capture value */
uwIC1Value1_T17CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
__HAL_TIM_SET_CAPTUREPOLARITY(htim, TIM_CHANNEL_1, TIM_INPUTCHANNELPOLARITY_FALLING);
uhCaptureIndex_T17CH1 = 1;
}
else if(uhCaptureIndex_T17CH1 == 1)
{
/* Get the 2nd Input Capture value */
uwIC1Value2_T17CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
__HAL_TIM_SET_CAPTUREPOLARITY(htim, TIM_CHANNEL_1, TIM_INPUTCHANNELPOLARITY_RISING);
/* Capture computation */
if (uwIC1Value2_T17CH1 > uwIC1Value1_T17CH1)
{
uwHighCapture_T17CH1 = (uwIC1Value2_T17CH1 - uwIC1Value1_T17CH1);
}
else if (uwIC1Value2_T17CH1 < uwIC1Value1_T17CH1)
{
/* 0xFFFF is max TIM1_CCRx value */
uwHighCapture_T17CH1 = ((0xFFFF - uwIC1Value1_T17CH1) + uwIC1Value2_T17CH1) + 1;
}
else
{
/* If capture values are equal, we have reached the limit of frequency
measures */
Error_Handler();
}
uwIC1Value1_T17CH1 = uwIC1Value2_T17CH1;
uhCaptureIndex_T17CH1 = 2;
/* Frequency computation: for this example TIMx (TIM1) is clocked by
APB2Clk */
}
else if(uhCaptureIndex_T17CH1 == 2)
{
uwIC1Value2_T17CH1 = HAL_TIM_ReadCapturedValue(htim, TIM_CHANNEL_1);
if (uwIC1Value2_T17CH1 > uwIC1Value1_T17CH1)
{
uwLowCapture_T17CH1 = (uwIC1Value2_T17CH1 - uwIC1Value1_T17CH1);
}
else if (uwIC1Value2_T17CH1 < uwIC1Value1_T17CH1)
{
/* 0xFFFF is max TIM1_CCRx value */
uwLowCapture_T17CH1 = ((0xFFFF - uwIC1Value1_T17CH1) + uwIC1Value2_T17CH1) + 1;
}
uwFrequency_T17CH1 = 1000000 / (uwLowCapture_T17CH1 + uwHighCapture_T17CH1);
uwDuty_T17CH1 = uwHighCapture_T17CH1 * 100.0 / (uwLowCapture_T17CH1 + uwHighCapture_T17CH1) ;
uhCaptureIndex_T17CH1 = 0;
}
}
}
}
char RxBuffer[30];
unsigned char BufIndex = 0;
unsigned char Rxdat;
void HAL_UART_RxCpltCallback(UART_HandleTypeDef * huart)
{
if(huart->Instance == USART1)
{
RxBuffer[BufIndex++] = Rxdat;
HAL_UART_Receive_IT(huart, &Rxdat, 1);
}
}
main.h:
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.h
* @brief : Header for main.c file.
* This file contains the common defines of the application.
******************************************************************************
* @attention
*
* Copyright (c) 2023 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 */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32g4xx_hal.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
/* USER CODE END ET */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
/* USER CODE END EC */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
/* USER CODE END EM */
/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */
/* Private defines -----------------------------------------------------------*/
/* USER CODE BEGIN Private defines */
#define DATA 0
#define PARA 1
/* USER CODE END Private defines */
#ifdef __cplusplus
}
#endif
#endif /* __MAIN_H */
main.h:
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2023 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 "rtc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "lcd.h"
#include "interrupt.h"
#include "stdio.h"
#include "badc.h"
#include "led.h"
#include "i2c.h"
#include "stdlib.h"
#include "string.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 */
char text[30];
extern struct keys key[4];
double volt_adc2;
extern uint32_t uwFrequency_T17CH1;
extern double uwDuty_T17CH1;
double T, H;
double k1 = 80 / 3.3;
double b1 = -20;
double k2 = 80 / 9.0;
double b2 = 10 - 80 / 9.0;
unsigned int getTick;
double Ttemp[60];
double Htemp[60];
unsigned char count;
unsigned char getOverFlag = 1;
unsigned char eeprom_readData;
unsigned char eeprom_writeData;
RTC_TimeTypeDef Trtc;
RTC_DateTypeDef Drtc;
unsigned char Second = 61;
unsigned int MarkCount;
unsigned char DisplayMode;
unsigned int getTimeMs = 1000;
int Tthresold = 40;
int Hthresold = 80;
unsigned int PA1_Fre = 1000;
unsigned char SettingIndex;
extern char RxBuffer[30];
extern unsigned char BufIndex;
extern unsigned char Rxdat;
unsigned char LD1FlashFlag;
unsigned char LD2FlashFlag;
unsigned char LD1FlashTick;
unsigned char LD2FlashTick;
unsigned char LD1FlashType;
unsigned char LD2FlashType;
unsigned char LD3FlashType;
unsigned char LED;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void DisposeKey(void);
void LCD_Disp(void);
void Rx_Proc(void);
void LED_Control(void);
/* 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_RTC_Init();
MX_TIM2_Init();
MX_TIM3_Init();
MX_TIM17_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
LCD_Init();
LCD_Clear(Black);
LCD_SetBackColor(Black);
LCD_SetTextColor(White);
Tthresold = eeprom_read(0) - 20;
Hthresold = eeprom_read(1);
getTimeMs = eeprom_read(2) * 1000;
PA1_Fre = eeprom_read(3) * 100;
__HAL_TIM_SET_PRESCALER(&htim2, 80000000 / 100 / PA1_Fre);
HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2);
HAL_TIM_IC_Start_IT(&htim17, TIM_CHANNEL_1);
getADC(&hadc2);
HAL_Delay(2);
for(unsigned char i = 0; i < 60; i++)
{
double Tsum = 0;
double Hsum = 0;
volt_adc2 = getADC(&hadc2) * 3.3 / 4096;
Ttemp[i] = k1 * volt_adc2 + b1;
Tsum += Ttemp[i];
Htemp[i] = uwFrequency_T17CH1 / 1000.0 * k2 + b2;
Hsum += Htemp[i];
if(i == 59)
{
T = Tsum / 60.0;
H = Hsum / 60.0;
}
}
HAL_TIM_Base_Start_IT(&htim3);
HAL_UART_Receive_IT(&huart1, &Rxdat, 1);
LED_Disp(0x00);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_RTC_GetDate(&hrtc, &Drtc, RTC_FORMAT_BIN);
HAL_RTC_GetTime(&hrtc, &Trtc, RTC_FORMAT_BIN);
if(uwTick - getTick > getTimeMs / 60)
{
getTick = uwTick;
volt_adc2 = getADC(&hadc2) * 3.3 / 4096;
Ttemp[count] = k1 * volt_adc2 + b1;
Htemp[count] = uwFrequency_T17CH1 / 1000.0 * k2 + b2;
count++;
if(count == 60)
{
count = 0;
getOverFlag = 1;
}
}
if(uwTick - LD1FlashTick > 100)
{
if(LD1FlashFlag)
{
LD1FlashType = !LD1FlashType;
LED = LED & 0xfe | (LD1FlashType << 0);
}
}
if(uwTick - LD2FlashTick > 100)
{
if(LD2FlashFlag)
{
LD2FlashType = !LD2FlashType;
LED = LED & 0xfd | (LD2FlashType << 1);
}
}
if(getOverFlag)
{
getOverFlag = 0;
for(unsigned char i = 0; i < 60; i++)
{
T += Ttemp[i];
H += Htemp[i];
}
T = T / 60.0;
H = H / 60.0;
MarkCount++;
LD3FlashType = !LD3FlashType;
LED = LED & 0xfb | (LD3FlashType << 2);
}
if(BufIndex != 0)
{
unsigned char temp = BufIndex;
HAL_Delay(1);
if(BufIndex == temp)
Rx_Proc();
}
DisposeKey();
LCD_Disp();
LED_Control();
LED_Disp(LED);
}
/* 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_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 = RCC_PLLM_DIV3;
RCC_OscInitStruct.PLL.PLLN = 20;
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 */
void DisposeKey(void)
{
if(key[0].single_flag)
{
LCD_Clear(Black);
if(DisplayMode == DATA)
{
DisplayMode = PARA;
}
else if(DisplayMode == PARA)
{
DisplayMode = DATA;
eeprom_write(0, Tthresold + 20);
HAL_Delay(10);
eeprom_write(1, Hthresold);
HAL_Delay(10);
eeprom_write(2, getTimeMs / 1000);
HAL_Delay(10);
eeprom_write(3, PA1_Fre / 100);
}
key[0].single_flag = 0;
}
if(key[1].single_flag)
{
SettingIndex++;
SettingIndex %= 4;
key[1].single_flag = 0;
}
if(key[2].single_flag)
{
if(SettingIndex == 0)
{
if(Tthresold + 1 <= 60)
Tthresold++;
}
else if(SettingIndex == 1)
{
if(Hthresold + 5 <= 90)
Hthresold += 5;
}
else if(SettingIndex == 2)
{
if(getTimeMs + 1000 <= 5000)
getTimeMs += 1000;
}
else if(SettingIndex == 3)
{
if(PA1_Fre + 500 <= 10000)
{
PA1_Fre += 500;
__HAL_TIM_SET_PRESCALER(&htim2, 80000000 / 100 / PA1_Fre);
}
}
key[2].single_flag = 0;
}
if(key[3].single_flag)
{
if(SettingIndex == 0)
{
if(Tthresold - 1 >= -20)
Tthresold--;
}
else if(SettingIndex == 1)
{
if(Hthresold - 5 >= 10)
Hthresold -= 5;
}
else if(SettingIndex == 2)
{
if(getTimeMs - 1000 >= 1000)
getTimeMs -= 1000;
}
else if(SettingIndex == 3)
{
if(PA1_Fre - 500 >= 1000)
{
PA1_Fre -= 500;
__HAL_TIM_SET_PRESCALER(&htim2, 80000000 / 100 / PA1_Fre);
}
}
key[3].single_flag = 0;
}
}
void LCD_Disp(void)
{
if(DisplayMode == DATA)
{
LCD_DisplayStringLine(Line1, " DATA");
sprintf(text, "T: %dC ", (int)T);
LCD_DisplayStringLine(Line3, text);
sprintf(text, "H: %d%%", (int)H);
LCD_DisplayStringLine(Line5, text);
if(Second != Trtc.Seconds)
{
sprintf(text, "RTC: %02d-%02d-%02d", Trtc.Hours, Trtc.Minutes, Trtc.Seconds);
LCD_DisplayStringLine(Line7, text);
}
sprintf(text, " MarkCount:%d", MarkCount);
LCD_DisplayStringLine(Line9, text);
}
if(DisplayMode == PARA)
{
LCD_DisplayStringLine(Line1, " PARA");
sprintf(text, " Tthresold :%dC ", Tthresold);
if(SettingIndex == 0)
LCD_SetTextColor(Green);
LCD_DisplayStringLine(Line3, text);
LCD_SetTextColor(White);
sprintf(text, " Hthresold :%d%% ", Hthresold);
if(SettingIndex == 1)
LCD_SetTextColor(Green);
LCD_DisplayStringLine(Line5, text);
LCD_SetTextColor(White);
sprintf(text, " geTime :%dS", getTimeMs / 1000);
if(SettingIndex == 2)
LCD_SetTextColor(Green);
LCD_DisplayStringLine(Line7, text);
LCD_SetTextColor(White);
sprintf(text, " testFre :%.1fKHz ", PA1_Fre / 1000.0);
if(SettingIndex == 3)
LCD_SetTextColor(Green);
LCD_DisplayStringLine(Line9, text);
LCD_SetTextColor(White);
}
}
void Rx_Proc(void)
{
if(BufIndex == 1)
{
if(RxBuffer[0] == 'C')
{
printf("%02d-%02d-%02d:Tthresohold:%dC, Hthresold:%d%%\n", Trtc.Hours, Trtc.Minutes, Trtc.Seconds, Tthresold, Hthresold);
}
if(RxBuffer[0] == 'T')
{
for(unsigned char i = 0; i < 60; i++)
{
printf("%02d-%02d-%02d:Ttemp[%d]:%.2fC, Htemp[%d]:%.2f%%\n", Trtc.Hours, Trtc.Minutes, Trtc.Seconds, i, Ttemp[i], i, Htemp[i]);
}
}
}
BufIndex = 0;
memset(RxBuffer, 0, 30);
}
int fputc(int ch, FILE * f)
{
HAL_UART_Transmit(&huart1, (unsigned char *)&ch, 1, HAL_MAX_DELAY);
return ch;
}
void LED_Control(void)
{
if(T > (double)Tthresold)
{
LD1FlashFlag = 1;
}
else
{
LD1FlashFlag = 0;
LD1FlashType = 0;
LD1FlashTick = uwTick;
LED = LED & 0xfe;
}
if(H > (double)Hthresold)
{
LD2FlashFlag = 1;
}
else
{
LD2FlashFlag = 0;
LD2FlashType = 0;
LD2FlashTick = uwTick;
LED = LED & 0xfd;
}
}
/* 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 */
四、完成效果
蓝桥杯嵌入式第七届国赛试题实现效果
五、总结
本篇文章只是为了存放我的代码，所以看不懂很正常，如果需要代码可以找我私信。