蓝桥杯嵌入式第七届真题(完成) STM32G431

作者：菜鸟追梦旅行 | 2024-02-07 21:11:44

踩

题目

相关文件

main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 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 "adc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "myadc.h"
#include "key.h"
#include "i2c_hal.h"
#include "stdio.h"
#include "led.h"
#include "usart2.h"
#include "string.h"
#include "stdio.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
extern uint32_t adctimes;
extern float k;//K? 
extern float adcval;
extern uint32_t height;
extern uint8_t level;
extern unsigned char min,med,max;
uint8_t view = 0;
uint8_t lcdtext[30];
extern struct Key key[4];
extern uint32_t led1times,led2times,led3times;
extern uint8_t led2flag,led3flag;
extern uint8_t led1status,led2status,led3status;
extern uint8_t OneData;
extern uint8_t rxflag;
uint8_t txtext[20];
/* 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 */
void lcd_process(void);
void led_process(void);
void adc_process(void);
void key_process(void);
void rx_process(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_TIM2_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
		HAL_TIM_Base_Start_IT(&htim2);
		HAL_UART_Receive_IT(&huart1,&OneData,1);
    LCD_Init();
		I2CInit(); 
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

    LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		E2PROM_Write(0x00,min);
		HAL_Delay(5);
		E2PROM_Write(0x01,med);
		HAL_Delay(5);
		E2PROM_Write(0x02,max);	
		HAL_Delay(5);
		LED_display(0x00);
    while (1)
    {
			adc_process();
			key_process();
			lcd_process();
			led_process();
			rx_process();
    /* 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};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {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_DIV2;
  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();
  }
  /** Initializes the peripherals clocks
  */
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_ADC12;
  PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
  PeriphClkInit.Adc12ClockSelection = RCC_ADC12CLKSOURCE_SYSCLK;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */
void adc_process(void)
{
    float newadcval;
    uint8_t newlevel;
    uint32_t newheight;
    int change;
    min = E2PROM_Read(0x00);
    med = E2PROM_Read(0x01);
    max = E2PROM_Read(0x02);

    if(adctimes >= 1000)
    {
        adctimes = 0;
        newadcval = get_Adc(&hadc2);
        newheight = k * newadcval;

        if(newheight <= min)
        {
            newlevel = 0;
        }
        else if(newheight <= med)
        {
            newlevel = 1;
        }
        else if(newheight <= max)
        {
            newlevel = 2;
        }
        else
        {
            newlevel = 3;
        }


        if(level != newlevel)
        {
            led2flag = 1; // 激活液位变化指示
            change = newheight - height;
            height = newheight;
            adcval = newadcval; // 更新adcval
						level = newlevel;
            if(change > 0)
            {
                sprintf((char *)txtext, "A:H%d+L%d+U\r\n", height, level);
                HAL_UART_Transmit(&huart1, (uint8_t *)txtext, strlen((char *)txtext), 50);
            }
            else if(change < 0)
            {
                sprintf((char *)txtext, "A:H%d+L%d+D\r\n", height, level);
                HAL_UART_Transmit(&huart1, (uint8_t *)txtext, strlen((char *)txtext), 50);
            }
        }
    }
}



void lcd_process(void)
{
	switch(view)
	{
		case 0:
		{
			sprintf((char *)lcdtext,"    Liquid Level");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"   Height:%d",height);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"   ADC:%.2f",adcval);
			LCD_DisplayStringLine(Line4,lcdtext);
			sprintf((char *)lcdtext,"   Level:%d",level);
			LCD_DisplayStringLine(Line6,lcdtext);
		}
		break;
		case 1:
		{
			sprintf((char *)lcdtext,"    Parameter Setup");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 1:%d",min);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 2:%d",med);
			LCD_DisplayStringLine(Line4,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 3:%d",max);
			LCD_DisplayStringLine(Line6,lcdtext);
		}
		break;
		case 2:
		{
			sprintf((char *)lcdtext,"    Parameter Setup");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 1:%d",min);
			LCD_SetTextColor(Green);
			LCD_DisplayStringLine(Line2,lcdtext);
			LCD_SetTextColor(White);
			sprintf((char *)lcdtext,"   Threshold 2:%d",med);
			LCD_DisplayStringLine(Line4,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 3:%d",max);
			LCD_DisplayStringLine(Line6,lcdtext);
		}
		break;
		case 3:
		{
			sprintf((char *)lcdtext,"    Parameter Setup");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 1:%d",min);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 2:%d",med);
			LCD_SetTextColor(Green);
			LCD_DisplayStringLine(Line4,lcdtext);
			LCD_SetTextColor(White);
			sprintf((char *)lcdtext,"   Threshold 3:%d",max);
			LCD_DisplayStringLine(Line6,lcdtext);
		}
		break;
		case 4:
		{
			sprintf((char *)lcdtext,"    Parameter Setup");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 1:%d",min);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 2:%d",med);
			LCD_DisplayStringLine(Line4,lcdtext);
			sprintf((char *)lcdtext,"   Threshold 3:%d",max);
			LCD_SetTextColor(Green);
			LCD_DisplayStringLine(Line6,lcdtext);
			LCD_SetTextColor(White);
		}
		break;
	
	}
}

void key_process(void)
{
	if(key[0].key_flag==1&&(view==0))
	{
		key[0].key_flag=0;
		view=1;
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
	}
	if(key[0].key_flag==1&&(view==1||view==2||view==3||view==4))
	{
		key[0].key_flag=0;
		view=0;
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
	}
	if(key[1].key_flag==1&&(view==1||view==2||view==3||view==4))
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[1].key_flag=0;
		view++;
		if(view>4)
			view=2;
	}
	
	
	if(key[2].key_flag==1&&view==2)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[2].key_flag=0;
		min+=5;
		if(min>95)
			min=5;
		E2PROM_Write(0x00,min);
	}
	else if(key[2].key_flag==1&&view==3)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[2].key_flag=0;
		med+=5;
		if(med>95)
			med=5;
		E2PROM_Write(0x01,med);
	}
	else if(key[2].key_flag==1&&view==4)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[2].key_flag=0;
		max+=5;
		if(max>95)
			max=5;
		E2PROM_Write(0x02,max);
	}
	
	
	if(key[3].key_flag==1&&view==2)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[3].key_flag=0;
		min-=5;
		if(min<5)
			min=5;
		E2PROM_Write(0x00,min);
	}
	else if(key[3].key_flag==1&&view==3)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[3].key_flag=0;
		med-=5;
		if(med<5)
			med=5;
		E2PROM_Write(0x01,med);
	}
	else if(key[3].key_flag==1&&view==4)
	{
		LCD_Clear(Black);
    LCD_SetBackColor(Black);
    LCD_SetTextColor(White);
		key[3].key_flag=0;
		max-=5;
		if(max<5)
			max=5;
		E2PROM_Write(0x01,max);
	}
}

void led_process(void)
{
    // LD1处理
    if(led1times >= 1000) // 每1秒
    {
        led1times = 0;
        led1status = !led1status;
        LED_display(led1status ? 0x01 : 0x00);
    }
    
    // LD2处理
    static int led2count = 0;
    if(led2flag && led2times >= 200) // 每0.2秒
    {
        led2times = 0;
        led2status = !led2status;
        LED_display(led2status ? 0x02 : 0x00);

        if(led2status) // 只在LED从关闭状态变为开启状态时增加计数
        {
            led2count++;
        }

        if(led2count >= 5) // 闪烁5次后停止
        {
            led2flag = 0;
            led2count = 0;
        }
    }
    
    // LD3处理
    static int led3count = 0;
    if(led3flag && led3times >= 200) // 每0.2秒
    {
        led3times = 0;
        led3status = !led3status;
        LED_display(led3status ? 0x04 : 0x00);

        if(led3status) // 只在LED从关闭状态变为开启状态时增加计数
        {
            led3count++;
        }

        if(led3count >= 5) // 闪烁5次后停止
        {
            led3flag = 0;
            led3count = 0;
        }
    }
}

void rx_process(void)
{
	if(rxflag==1)
	{
		led3flag = 1;
		rxflag = 0;
		switch(OneData)
		{
			case 'C':
			{
				sprintf((char *)txtext,"C:H%d+L%d\r\n",height,level);
				HAL_UART_Transmit(&huart1,(uint8_t *)txtext,strlen((char *)txtext),50);
			}
			break;
			case 'S':
			{
				sprintf((char *)txtext,"S:TL%d+TM%d+TH%d\r\n",min,med,max);
				HAL_UART_Transmit(&huart1,(uint8_t *)txtext,strlen((char *)txtext),50);
			}
			break;
			default:
			{
				sprintf((char *)txtext,"Error!\r\n");
				HAL_UART_Transmit(&huart1,(uint8_t *)txtext,strlen((char *)txtext),50);
			}
			break;
		}
	}
}
/* 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****/

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551

adc_process 中1s读取一次使用1ms进入一次SysTick_Handler 中断定时

newadcval、newlevel、newheight都是最新一次数据，与上一次数据比较是否液位发生变化

led_process中题目要求三个led按要求变化，led1要一直闪烁，led2、led3满足特定条件后才变化翻转所以使用两个标志位led2flag和led3flag同时使用静态变量led2count计数闪烁五次后关闭

i2c_hal.c

/*
  程序说明: CT117E-M4嵌入式竞赛板GPIO模拟I2C总线驱动程序
  软件环境: MDK-ARM HAL库
  硬件环境: CT117E-M4嵌入式竞赛板
  日    期: 2020-3-1
*/

#include "i2c_hal.h"

#define DELAY_TIME	20

/**
  * @brief SDA线输入模式配置
  * @param None
  * @retval None
  */
void SDA_Input_Mode()
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    GPIO_InitStructure.Pin = GPIO_PIN_7;
    GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
    GPIO_InitStructure.Pull = GPIO_PULLUP;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/**
  * @brief SDA线输出模式配置
  * @param None
  * @retval None
  */
void SDA_Output_Mode()
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    GPIO_InitStructure.Pin = GPIO_PIN_7;
    GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_OD;
    GPIO_InitStructure.Pull = GPIO_NOPULL;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
}

/**
  * @brief SDA线输出一个位
  * @param val 输出的数据
  * @retval None
  */
void SDA_Output( uint16_t val )
{
    if ( val )
    {
        GPIOB->BSRR |= GPIO_PIN_7;
    }
    else
    {
        GPIOB->BRR |= GPIO_PIN_7;
    }
}

/**
  * @brief SCL线输出一个位
  * @param val 输出的数据
  * @retval None
  */
void SCL_Output( uint16_t val )
{
    if ( val )
    {
        GPIOB->BSRR |= GPIO_PIN_6;
    }
    else
    {
        GPIOB->BRR |= GPIO_PIN_6;
    }
}

/**
  * @brief SDA输入一位
  * @param None
  * @retval GPIO读入一位
  */
uint8_t SDA_Input(void)
{
	if(HAL_GPIO_ReadPin(GPIOB, GPIO_PIN_7) == GPIO_PIN_SET){
		return 1;
	}else{
		return 0;
	}
}


/**
  * @brief I2C的短暂延时
  * @param None
  * @retval None
  */
static void delay1(unsigned int n)
{
    uint32_t i;
    for ( i = 0; i < n; ++i);
}

/**
  * @brief I2C起始信号
  * @param None
  * @retval None
  */
void I2CStart(void)
{
    SDA_Output(1);
    delay1(DELAY_TIME);
    SCL_Output(1);
    delay1(DELAY_TIME);
    SDA_Output(0);
    delay1(DELAY_TIME);
    SCL_Output(0);
    delay1(DELAY_TIME);
}

/**
  * @brief I2C结束信号
  * @param None
  * @retval None
  */
void I2CStop(void)
{
    SCL_Output(0);
    delay1(DELAY_TIME);
    SDA_Output(0);
    delay1(DELAY_TIME);
    SCL_Output(1);
    delay1(DELAY_TIME);
    SDA_Output(1);
    delay1(DELAY_TIME);

}

/**
  * @brief I2C等待确认信号
  * @param None
  * @retval None
  */
unsigned char I2CWaitAck(void)
{
    unsigned short cErrTime = 5;
    SDA_Input_Mode();
    delay1(DELAY_TIME);
    SCL_Output(1);
    delay1(DELAY_TIME);
    while(SDA_Input())
    {
        cErrTime--;
        delay1(DELAY_TIME);
        if (0 == cErrTime)
        {
            SDA_Output_Mode();
            I2CStop();
            return ERROR;
        }
    }
    SDA_Output_Mode();
    SCL_Output(0);
    delay1(DELAY_TIME);
    return SUCCESS;
}

/**
  * @brief I2C发送确认信号
  * @param None
  * @retval None
  */
void I2CSendAck(void)
{
    SDA_Output(0);
    delay1(DELAY_TIME);
    delay1(DELAY_TIME);
    SCL_Output(1);
    delay1(DELAY_TIME);
    SCL_Output(0);
    delay1(DELAY_TIME);

}

/**
  * @brief I2C发送非确认信号
  * @param None
  * @retval None
  */
void I2CSendNotAck(void)
{
    SDA_Output(1);
    delay1(DELAY_TIME);
    delay1(DELAY_TIME);
    SCL_Output(1);
    delay1(DELAY_TIME);
    SCL_Output(0);
    delay1(DELAY_TIME);

}

/**
  * @brief I2C发送一个字节
  * @param cSendByte 需要发送的字节
  * @retval None
  */
void I2CSendByte(unsigned char cSendByte)
{
    unsigned char  i = 8;
    while (i--)
    {
        SCL_Output(0);
        delay1(DELAY_TIME);
        SDA_Output(cSendByte & 0x80);
        delay1(DELAY_TIME);
        cSendByte += cSendByte;
        delay1(DELAY_TIME);
        SCL_Output(1);
        delay1(DELAY_TIME);
    }
    SCL_Output(0);
    delay1(DELAY_TIME);
}

/**
  * @brief I2C接收一个字节
  * @param None
  * @retval 接收到的字节
  */
unsigned char I2CReceiveByte(void)
{
    unsigned char i = 8;
    unsigned char cR_Byte = 0;
    SDA_Input_Mode();
    while (i--)
    {
        cR_Byte += cR_Byte;
        SCL_Output(0);
        delay1(DELAY_TIME);
        delay1(DELAY_TIME);
        SCL_Output(1);
        delay1(DELAY_TIME);
        cR_Byte |=  SDA_Input();
    }
    SCL_Output(0);
    delay1(DELAY_TIME);
    SDA_Output_Mode();
    return cR_Byte;
}

//
void I2CInit(void)
{
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    GPIO_InitStructure.Pin = GPIO_PIN_7 | GPIO_PIN_6;
    GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStructure.Pull = GPIO_PULLUP;
    GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
}


uint8_t E2PROM_Read(uint8_t addr)
{
	uint8_t val;
	I2CStart();
	I2CSendByte(0xA0);
	I2CWaitAck();
	I2CSendByte(addr);
	I2CWaitAck();
	//I2CStop();
	
	I2CStart();
	I2CSendByte(0xA1);
	I2CWaitAck();
	val = I2CReceiveByte();
	I2CWaitAck();
	I2CStop();
	
	return val;
}

void E2PROM_Write(uint8_t addr,uint8_t data)
{
	I2CStart();
	I2CSendByte(0xA0);
	I2CWaitAck();
	
	I2CSendByte(addr);
	I2CWaitAck();
	
	I2CSendByte(data);
	I2CWaitAck();
	I2CStop();
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297

key.c

#include "key.h"
struct Key key[4] = {0,0,0,0};

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	if(htim->Instance==TIM2)
	{
		key[0].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0);
		key[1].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1);
		key[2].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2);
		key[3].key_gpio = HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0);
		for(int i = 0;i<=3;i++)
		{
			switch(key[i].key_status)
			{
				case 0:
				{
					if(key[i].key_gpio==0)
					{
						key[i].key_status = 1;
					}
				}
				break;
				case 1:
				{
					if(key[i].key_gpio==0)
					{
						key[i].key_status = 2;
						key[i].key_flag = 1;
					}
					else
					{
						key[i].key_status = 0;
					}
				}
				break;
				case 2:
				{
					if(key[i].key_gpio==1)
					{
						key[i].key_status = 0;
					}
				
				}
			}
		}
	}

}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

led.c

#include "led.h"

uint32_t led1times,led2times,led3times;
uint8_t led1status=0,led2status=0,led3status=0;
uint8_t led2flag= 0,led3flag=0;
void LED_display(uint8_t led)
{
	HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOC,led<<8,GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

注意i2c再写数据时注意要间隔5ms以上要不然会数据异常

myadc.c

#include "myadc.h"

uint32_t adctimes = 0;
float k = 100/(3.3f);//Kֵ 
uint32_t height;
float adcval;
uint8_t level;
unsigned char min=30,med=50,max=70;
float get_Adc(ADC_HandleTypeDef *hadc){
   int val = 0.0f;
   for(int i = 0; i < 5; i++)
   {
      HAL_ADC_Start(hadc);
      HAL_ADC_PollForConversion(hadc, 100); // 等待转换完成
      val += HAL_ADC_GetValue(hadc);
      HAL_ADC_Stop(hadc); // 停止ADC转换
   }
   return val * 3.3f / 4096.0f / 5.0f; // 计算平均电压值
}



1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

usart2.c

#include "usart2.h"

uint8_t OneData;
uint8_t rxflag;

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance==USART1)
	{
		rxflag = 1;
		HAL_UART_Receive_IT(huart,&OneData,1);
	}
	
}


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

本文内容由网友自发贡献，转载请注明出处：【wpsshop博客】