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.AKEY, 打开双ADC采集再对采集值处理按键
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，TIM4(LED闪烁计时器)：PSC:80-1,ARR:999
5.PA4:ADC_IN17,PA5:ADC_IN13都要为Single-ended模式
6.i2c:设置PB6,PB7为GPIO_Output模式即可
7.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.c:

#include "interrupt.h"
#include "akey.h"
#include "lcd.h"

struct keys akey[8] = {0, 0, 0, 0, 0};
unsigned char keyioAnti;
unsigned int LEDTick;
extern unsigned char LED;
unsigned char LED1Type;
unsigned int LEDpulse;

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef * htim)
{
	if(htim->Instance == TIM3)
	{
		ADC_Key_IO();
		keyioAnti = ~keyio;
		akey[0].key_sta = keyioAnti >> 0 & 0x01;
		akey[1].key_sta = keyioAnti >> 1 & 0x01;
		akey[2].key_sta = keyioAnti >> 2 & 0x01;
		akey[3].key_sta = keyioAnti >> 3 & 0x01;
		akey[4].key_sta = keyioAnti >> 4 & 0x01;
		akey[5].key_sta = keyioAnti >> 5 & 0x01;
		akey[6].key_sta = keyioAnti >> 6 & 0x01;
		akey[7].key_sta = keyioAnti >> 7 & 0x01;
		for(unsigned char i= 0; i < 8 ;i++)
		{
			switch(akey[i].key_judge)
			{
				case 0:
				{
					if(akey[i].key_sta == 0)
					{
						akey[i].key_judge = 1;
						akey[i].key_time = 0;
//						LCD_DisplayStringLine(Line0, "here");
					}
					break;
				}
				case 1:
				{
					if(akey[i].key_sta == 0)
					{
						akey[i].key_judge = 2;
					}
					else
					{
						akey[i].key_judge = 0;
					}
					break;
				}
				case 2:
				{
					if(akey[i].key_sta == 1)
					{
						akey[i].key_judge = 0;
						if(akey[i].key_judge < 80)
						{
							akey[i].single_flag = 1;
						}
					}
					else
					{
						akey[i].key_time++;
						if(akey[i].key_time >= 80)
						{
							akey[i].long_flag = 1;
						}
					}
					break;
				}
			}
		}
	}
	if(htim->Instance == TIM4)
	{
		LEDTick++;
		if(LEDTick == LEDpulse)
		{
			LEDTick = 0;
			LED1Type = !LED1Type;
			LED = LED & 0xfe | LED1Type;
		}
	}
}

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.c:

/* 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 "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "akey.h"
#include "dadc.h"
#include "lcd.h"
#include "stdio.h"
#include "interrupt.h"
#include "i2c.h"
#include "stdlib.h"
#include "string.h"
#include "led.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 akey[8];
unsigned char eeprom_writedata;
unsigned char eeprom_readdata;
double weight;
unsigned char DisplayMode;
unsigned char goodsCode;
double Price[3] = {9.80, 9.80, 9.80};
double total;
unsigned char SettingIndex;
double TempPrice[3] = {9.80, 9.80, 9.80};
unsigned char SetN;
unsigned char keywait;
unsigned char LED;
extern unsigned int LEDpulse;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void DisposeKey(void);
void LCD_Disp(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_TIM3_Init();
  MX_USART1_UART_Init();
  MX_TIM4_Init();
  /* USER CODE BEGIN 2 */
	LCD_Init();
	LCD_Clear(Black);
	LCD_SetBackColor(Black);
	LCD_SetTextColor(White);
	LCD_DisplayStringLine(Line0, "ok");
	HAL_TIM_Base_Start_IT(&htim3);
	HAL_TIM_Base_Start_IT(&htim4);
	getDualADC(&hadc2);     
	HAL_Delay(2);
	getDualADC(&hadc2);
	weight = adc2_in17_AO1 / 4096.0 * 10.0;
	total = Price[goodsCode] * weight;
	Price[0] = eeprom_read(0) + eeprom_read(1) / 100.0;
	Price[1] = eeprom_read(2) + eeprom_read(3) / 100.0;
	Price[2] = eeprom_read(4) + eeprom_read(5) / 100.0;
	SetN = eeprom_read(6);
	LED_Disp(0x00);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
		getDualADC(&hadc2);
		weight = adc2_in17_AO1 / 4096.0 * 10.0;
		DisposeKey();
		LCD_Disp();
		if(DisplayMode == DATA)
		{
			LEDpulse = 800;
		}
		else
		{
			LEDpulse = 400;
		}
		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(akey[0].single_flag)
	{
		LCD_Clear(Black);
		if(DisplayMode == DATA)
		{
			DisplayMode = PARA;
		}
		else if(DisplayMode == PARA)
		{
			DisplayMode = DATA;
			//±£´æ
			eeprom_write(0, (unsigned int)(Price[0] * 100) / 100);
			HAL_Delay(10);
			eeprom_write(1, (unsigned int)(Price[0] * 100) % 100);
			HAL_Delay(10);
			eeprom_write(2, (unsigned int)(Price[1] * 100) / 100);
			HAL_Delay(10);
			eeprom_write(3, (unsigned int)(Price[1] * 100) % 100);
			HAL_Delay(10);
			eeprom_write(4, (unsigned int)(Price[2] * 100) / 100);
			HAL_Delay(10);
			eeprom_write(5, (unsigned int)(Price[2] * 100) % 100);
			HAL_Delay(10);
			if(TempPrice[0] != Price[0] || TempPrice[1] != Price[1] || TempPrice[2] != Price[2])
			{
				SetN++;
				TempPrice[0] = Price[0];
				TempPrice[1] = Price[1];
				TempPrice[2] = Price[2];
				eeprom_write(6, SetN);
			}
//			if((int)(TempPrice[0] * 100) != (int)(Price[0] * 100) ||(int)(TempPrice[1] * 100) != (int)(Price[1] * 100) || (int)(TempPrice[2] * 100) != (int)(Price[2] * 100))
//			{
//				SetN++;
//				eeprom_write(6, SetN);
//			}
			//´®¿ÚÊä³ö
			printf("U.W.1:%.2f\n", Price[0]);
			printf("U.W.2:%.2f\n", Price[1]);
			printf("U.W.3:%.2f\n", Price[2]);
		}
		akey[0].single_flag = 0;
	}
	if(akey[1].single_flag)
	{
		if(DisplayMode == PARA)
		{
			if((int)((Price[SettingIndex] + 0.01) * 100) <= 999)
			{
				Price[SettingIndex] += 0.01;
			}
		}
		akey[1].single_flag = 0;
	}
	if(akey[1].long_flag)
	{
		if(DisplayMode == PARA)
		{
			keywait++;
			if(keywait == 2)
			{
				keywait = 0;
				if((int)((Price[SettingIndex] + 0.01) * 100) <= 999)
				{
					Price[SettingIndex] += 0.01;
				}
			}
		}
		akey[1].long_flag = 0;
	}
	if(akey[2].single_flag)
	{
		if(DisplayMode == PARA)
		{
			if((int)((Price[SettingIndex] - 0.01) * 100) >= 0)
			{
				Price[SettingIndex] -= 0.01;
			}
			if(Price[SettingIndex] < -0.000000)
				Price[SettingIndex] = 0;
			}
		akey[2].single_flag = 0;
	}
	if(akey[2].long_flag)
	{
		if(DisplayMode == PARA)
		{
			keywait++;
			if(keywait == 2)
			{
				keywait = 0;
				if((int)((Price[SettingIndex] - 0.01) * 100) >= 0)
				{
					Price[SettingIndex] -= 0.01;
				}
				if(Price[SettingIndex] < -0.000000)
					Price[SettingIndex] = 0;
			}
		}
		akey[2].long_flag = 0;
	}
	if(akey[3].single_flag)
	{
		if(DisplayMode == PARA)
		{			
			SettingIndex++;
			SettingIndex %= 3;
		}
		akey[3].single_flag = 0;
	}
	if(akey[4].single_flag)
	{
		if(DisplayMode == DATA)
		{
			goodsCode = 0;
		}
		akey[4].single_flag = 0;
	}
	if(akey[5].single_flag)
	{
		if(DisplayMode == DATA)
		{
			goodsCode = 1;
		}
		akey[5].single_flag = 0;
	}
	if(akey[6].single_flag)
	{
		if(DisplayMode == DATA)
		{
			goodsCode = 2;
		}
		akey[6].single_flag = 0;
	}
	if(akey[7].single_flag)
	{
		if(DisplayMode == PARA)
		{
			total = weight * Price[goodsCode];
			printf("U.W.%d:%.2f\n", goodsCode, Price[goodsCode]);
			printf("G.W:%.2f\n", weight);
			printf("Total:%.2f\n", total);
		}
		akey[7].single_flag = 0;
	}
}

void LCD_Disp(void)
{
	if(DisplayMode == DATA)
	{
		LCD_DisplayStringLine(Line0, "        DATA");
		sprintf(text, "good sCode:%d", goodsCode + 1);
		LCD_DisplayStringLine(Line2, text);
		sprintf(text, "goodsPrice:%.2f/kg", Price[goodsCode]);
		LCD_DisplayStringLine(Line4, text);
		sprintf(text, "weight    :%.2fkg", weight);
		LCD_DisplayStringLine(Line6, text);
		sprintf(text, "total     :%.1f", total);
		LCD_DisplayStringLine(Line8, text);
	}
	if(DisplayMode == PARA)
	{
		LCD_DisplayStringLine(Line0, "        PARA");
		sprintf(text, "Price1:%.2lf/kg ", Price[0]);
		if(SettingIndex == 0)
			LCD_SetBackColor(Green);
		LCD_DisplayStringLine(Line2, text);
		LCD_SetBackColor(Black);
		sprintf(text, "Price2:%.2lf/kg ", Price[1]);
		if(SettingIndex == 1)
			LCD_SetBackColor(Green);
		LCD_DisplayStringLine(Line4, text);
		LCD_SetBackColor(Black);
		sprintf(text, "Price3:%.2lf/kg ", Price[2]);
		if(SettingIndex == 2)
			LCD_SetBackColor(Green);
		LCD_DisplayStringLine(Line6, text);
		LCD_SetBackColor(Black);
		sprintf(text, "              N:%d", SetN);
		LCD_DisplayStringLine(Line9, text);
	}
}

int fputc(int ch, FILE *f)
{
	HAL_UART_Transmit(&huart1, (unsigned char *)&ch, 1, HAL_MAX_DELAY);
	return ch;
}

/* 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

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。