蓝桥杯嵌入式uart，iic，adc_scan模版

ops/2025/2/4 14:28:50/

本次用到的是ttl电平

1.波特率配置

2.中断使能

为什么会乱码

//uartmy_main.h

 

#include "my_main.h"
uint8_t led_sta=0x10;
char text[30];
char uart_tx[50];
char uart_rx[50];extern struct Bkeys bkey[];
char passwd[3]={'1','2','3'};
void LED_Disp(uint8_t dsLED)
{HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);//所有LED熄灭（l小写）HAL_GPIO_WritePin(GPIOC,dsLED<<8,GPIO_PIN_RESET);//左移8位：控制C8-15引脚，值为1的点亮HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);//开锁存器HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);//关锁存器
}
float adc_read(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/4096.0f;return adc_f;
}
float adc_read_os(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/65536.0f;return adc_f;
}
void setup()
{HAL_TIM_Base_Start_IT(&htim6);HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2);//TIM15_CH1输入演示HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_2);//TIM3_CH2输入演示HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_2);HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);HAL_ADCEx_Calibration_Start(&hadc2,ADC_SINGLE_ENDED);LED_Disp(0x00);//关掉所有LEDLCD_Init();//LCD初始化LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);
}void loop()
{static uint16_t temp=0;float frq1,frq2=0;float duty1,duty2=0;float adc_data_PB15;RTC_TimeTypeDef time;RTC_DateTypeDef date;HAL_RTC_GetTime(&hrtc,&time,RTC_FORMAT_BIN);HAL_RTC_GetDate(&hrtc,&date,RTC_FORMAT_BIN);sprintf(text,"time:%d:%d:%d      ",time.Hours,time.Minutes,time.Seconds);LCD_DisplayStringLine(Line9,(uint8_t *)text);//局部刷新	frq1=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1);duty1=((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_2)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1)));sprintf(text,"FRQ:%.2fHz   ",frq1);LCD_DisplayStringLine(Line1,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY:%.2f%%   ",duty1);LCD_DisplayStringLine(Line2,(uint8_t *)text);//局部刷新	frq2=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1);duty2=((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_1)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1)));sprintf(text,"FRQ2:%.2fHz   ",frq2);LCD_DisplayStringLine(Line3,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY2:%.2f%%   ",duty2);LCD_DisplayStringLine(Line4,(uint8_t *)text);//局部刷新		adc_data_PB15=adc_read_os(&hadc2);sprintf(text,"PB15:%.4fV   ",adc_data_PB15);LCD_DisplayStringLine(Line5,(uint8_t *)text);//局部刷新	sprintf(uart_tx,"PB15:%.4fV   \r\n",adc_data_PB15);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);if(bkey[1].short_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	__HAL_TIM_SET_AUTORELOAD(&htim2,250-1);__HAL_TIM_SetCompare(&htim2,TIM_CHANNEL_2,125);bkey[1].short_flag=0;}		if(bkey[2].short_flag==1){/*     LCD演示     */sprintf(text,"    KEY_2 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[2].short_flag=0;}		/*长按快速增加功能*/if(bkey[1].long_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 long!,%d  ",temp++);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	}	if(bkey[1].double_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 double!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[1].double_flag=0;}	/*长按后抬起执行*/
//	if(bkey[1].long_flag==1)
//	{
//	/*     LCD演示     */
//		sprintf(text,"    KEY_1 long!     ");
//		LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	
//		bkey[1].long_flag=0;
//	}	
}void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{if(htim->Instance==TIM6)key_serv_double();
}	
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{char old_pswd[10];char new_pswd[10];sscanf(uart_rx,"%3s-%3s",old_pswd,new_pswd);if(strcmp(old_pswd,passwd)==0){for(int i=0;i<3;i++)passwd[i]=new_pswd[i];sprintf(text,"new:%s    ",passwd);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新		sprintf(uart_tx,"new:%s      \r\n",passwd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);		}else{sprintf(text,"Fail    ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	sprintf(uart_tx,"old:%s  new:%s      \r\n",old_pswd,new_pswd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);				}HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);
}

 

#include "key.h"struct Bkeys bkey[5]={0,0,0,0};uint8_t key_read()
{if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)==0) return 1;else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==0) return 2;else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2)==0) return 3;else if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)==0) return 4;else return 0;
}void key_serv()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1)bkey[key_sta].short_flag=1;}else{for(int i=0;i<5;i++) bkey[i].age=0;}
}
/*长按快速增加功能*/
void key_serv_long()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1) bkey[key_sta].press=1;}else{for(int i=0;i<5;i++) {if(bkey[i].press==1&&bkey[i].long_flag==0)bkey[i].short_flag=1;bkey[i].age=0;bkey[i].press=0;bkey[i].long_flag=0;}}if(bkey[key_sta].age>69) bkey[key_sta].long_flag=1;
}
/*长按后抬起执行*/
//void key_serv_long()
//{
//	uint8_t key_sta=key_read();
//	if(key_sta!=0)
//	{
//		bkey[key_sta].age++;
//		if(bkey[key_sta].age>1) bkey[key_sta].press=1;
//	}
//	else
//	{
//		for(int i=0;i<5;i++) 
//		{
//			if(bkey[i].age>69) bkey[i].long_flag=1;
//			if(bkey[i].press==1&&bkey[i].long_flag==0)
//				bkey[i].short_flag=1;
//			bkey[i].age=0;
//			bkey[i].press=0;
//		}
//	}
//}void key_serv_double()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1) bkey[key_sta].press=1;}else{for(int i=0;i<5;i++) {if(bkey[i].double_ageEN==1&&bkey[i].press==1){bkey[i].double_flag=1;bkey[i].double_ageEN=0;bkey[i].press=0;}if(bkey[i].press&&bkey[i].long_flag==0){bkey[i].double_ageEN=1;}if(bkey[i].double_ageEN==1)bkey[i].double_age++;if(bkey[i].double_ageEN==1&&bkey[i].double_age>20){bkey[i].short_flag=1;bkey[i].double_ageEN=0;bkey[i].double_age=0;}bkey[i].age=0;bkey[i].press=0;bkey[i].long_flag=0;}}if(bkey[key_sta].age>69) bkey[key_sta].long_flag=1;
}

 

IIC_EEPROM

原理图

24c02

引脚配置

为什么要配置成output模式因为官方会提供一个i2c的库，可以直接用用的是软件IIC

不可用状态，用的软件IIC

直接生成就可

将这两个文件复制到bsp文件下面

At24c02手册

1k，2k是容量

一个总线上可以挂很多很多芯片

真题案例

实验现象

问题   ---按键没有用只显示1038

#include "my_main.h"
uint8_t led_sta=0x10;
char text[30];
char uart_tx[50];
char uart_rx[50];extern struct Bkeys bkey[];
char passwd[3]={'1','2','3'};uint8_t eep_num;
uint16_t eep_frq;
float eep_adc;
void LED_Disp(uint8_t dsLED)
{HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);//所有LED熄灭（l小写）HAL_GPIO_WritePin(GPIOC,dsLED<<8,GPIO_PIN_RESET);//左移8位：控制C8-15引脚，值为1的点亮HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);//开锁存器HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);//关锁存器
}
float adc_read(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/4096.0f;return adc_f;
}
float adc_read_os(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/65536.0f;return adc_f;
}
void setup()
{HAL_TIM_Base_Start_IT(&htim6);HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2);//TIM15_CH1输入演示HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_2);//TIM3_CH2输入演示HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_2);HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);HAL_ADCEx_Calibration_Start(&hadc2,ADC_SINGLE_ENDED);LED_Disp(0x00);//关掉所有LEDLCD_Init();//LCD初始化LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);I2CInit();mcp_write(10);
}void loop()
{static uint16_t temp=0;float frq1,frq2=0;float duty1,duty2=0;float adc_data_PB15;RTC_TimeTypeDef time;RTC_DateTypeDef date;HAL_RTC_GetTime(&hrtc,&time,RTC_FORMAT_BIN);HAL_RTC_GetDate(&hrtc,&date,RTC_FORMAT_BIN);sprintf(text,"time:%d:%d:%d      ",time.Hours,time.Minutes,time.Seconds);LCD_DisplayStringLine(Line9,(uint8_t *)text);//局部刷新	frq1=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1);duty1=((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_2)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1)));sprintf(text,"FRQ:%.2fHz   ",frq1);LCD_DisplayStringLine(Line1,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY:%.2f%%   ",duty1);LCD_DisplayStringLine(Line2,(uint8_t *)text);//局部刷新	frq2=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1);duty2=((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_1)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1)));sprintf(text,"FRQ2:%.2fHz   ",frq2);LCD_DisplayStringLine(Line3,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY2:%.2f%%   ",duty2);LCD_DisplayStringLine(Line4,(uint8_t *)text);//局部刷新		adc_data_PB15=adc_read_os(&hadc2);sprintf(text,"PB15:%.4fV   ",adc_data_PB15);LCD_DisplayStringLine(Line5,(uint8_t *)text);//局部刷新	eep_num=eeprom_read(8);eep_frq=eeprom_read16(10);eep_adc=eeprom_read_f(12);sprintf(text,"EEP:%d,%d,%.2f   ",eep_num,eep_frq,eep_adc);LCD_DisplayStringLine(Line6,(uint8_t *)text);//局部刷新		
//	sprintf(uart_tx,"PB15:%.4fV   \r\n",adc_data_PB15);
//	HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);if(bkey[1].short_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	__HAL_TIM_SET_AUTORELOAD(&htim2,250-1);__HAL_TIM_SetCompare(&htim2,TIM_CHANNEL_2,125);bkey[1].short_flag=0;}		if(bkey[2].short_flag==1){/*     LCD演示     */eep_num+=1;eeprom_write(8,eep_num);HAL_Delay(10);eeprom_write16(10,(uint16_t)frq1);eeprom_write_f(12,adc_data_PB15);sprintf(text,"    KEY_2 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[2].short_flag=0;}		/*长按快速增加功能*/if(bkey[1].long_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 long!,%d  ",temp++);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	}	if(bkey[1].double_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 double!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[1].double_flag=0;}	/*长按后抬起执行*/
//	if(bkey[1].long_flag==1)
//	{
//	/*     LCD演示     */
//		sprintf(text,"    KEY_1 long!     ");
//		LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	
//		bkey[1].long_flag=0;
//	}	
}void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{if(htim->Instance==TIM6)key_serv_double();
}	
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{char old_pswd[10];char new_pswd[10];sscanf(uart_rx,"%3s-%3s",old_pswd,new_pswd);if(strcmp(old_pswd,passwd)==0){for(int i=0;i<3;i++)passwd[i]=new_pswd[i];sprintf(text,"new:%s    ",passwd);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新		sprintf(uart_tx,"new:%s      \r\n",passwd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);		}else{sprintf(text,"Fail    ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	sprintf(uart_tx,"old:%s  new:%s      \r\n",old_pswd,new_pswd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);				}HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);
}

 i2c_hal.c


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);
}void eeprom_write(uint8_t addr,uint8_t dat)
{I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}uint8_t eeprom_read(uint8_t addr)
{uint8_t rec;I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CStop();I2CStart();I2CSendByte(0xa1);I2CWaitAck();rec=I2CReceiveByte();I2CSendNotAck();I2CStop();return rec;
}void eeprom_write16(uint8_t addr,uint16_t dat)
{uint8_t dat_h=dat>>8;uint8_t dat_l=dat;eeprom_write(addr,dat_h);HAL_Delay(10);eeprom_write(addr+1,dat_l);HAL_Delay(10);
}uint16_t  eeprom_read16(uint8_t addr)
{uint8_t dat_h=eeprom_read(addr);uint8_t dat_l=eeprom_read(addr+1);return (dat_h<<8)+dat_l;
}void eeprom_write_f(uint8_t addr,float dat)
{uint16_t dat_f=dat*100;uint8_t dat_h=dat_f>>8;uint8_t dat_l=dat_f;eeprom_write(addr,dat_h);HAL_Delay(10);eeprom_write(addr+1,dat_l);HAL_Delay(10);
}float  eeprom_read_f(uint8_t addr)
{uint8_t dat_h=eeprom_read(addr);uint8_t dat_l=eeprom_read(addr+1);return ((dat_h<<8)+dat_l)/100.0f;
}
void mcp_write(uint8_t dat)
{I2CStart();I2CSendByte(0x5e);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}

ADC_scan_DMA

原理图

引脚配置

Adc是将一个模拟的值转化为一个电压的值

Adc通道使能配置

之后点击生成即可

实例测试

显示在第三行

 my_main.h

#include "my_main.h"
uint8_t led_sta=0x10;
char text[30];
char uart_tx[50];
char uart_rx[50];extern struct Bkeys bkey[];uint16_t adc_Buf[2];
char passwd[3]={'1','2','3'};uint8_t eep_num;
uint16_t eep_frq;
float eep_adc;
void LED_Disp(uint8_t dsLED)
{HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);//所有LED熄灭（l小写）HAL_GPIO_WritePin(GPIOC,dsLED<<8,GPIO_PIN_RESET);//左移8位：控制C8-15引脚，值为1的点亮HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);//开锁存器HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);//关锁存器
}
float adc_read(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/4096.0f;return adc_f;
}
float adc_read_os(ADC_HandleTypeDef *hadc)
{uint16_t adc_val;float adc_f;HAL_ADC_Start(hadc);adc_val=HAL_ADC_GetValue(hadc);adc_f=adc_val*3.3f/65536.0f;return adc_f;
}
void setup()
{HAL_TIM_Base_Start_IT(&htim6);HAL_TIM_PWM_Start(&htim2,TIM_CHANNEL_2);//TIM15_CH1输入演示HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim15,TIM_CHANNEL_2);//TIM3_CH2输入演示HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_1);HAL_TIM_IC_Start(&htim3,TIM_CHANNEL_2);HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);HAL_ADCEx_Calibration_Start(&hadc2,ADC_SINGLE_ENDED);HAL_ADCEx_Calibration_Start(&hadc1,ADC_SINGLE_ENDED);HAL_ADC_Start_DMA(&hadc1,(uint32_t *)adc_Buf,2);LED_Disp(0x00);//关掉所有LEDLCD_Init();//LCD初始化LCD_Clear(Black);LCD_SetBackColor(Black);LCD_SetTextColor(White);I2CInit();mcp_write(20);
}void loop()
{static uint16_t temp=0;float frq1,frq2=0;float duty1,duty2=0;float adc_data_PB15;RTC_TimeTypeDef time;RTC_DateTypeDef date;HAL_RTC_GetTime(&hrtc,&time,RTC_FORMAT_BIN);HAL_RTC_GetDate(&hrtc,&date,RTC_FORMAT_BIN);sprintf(text,"time:%d:%d:%d      ",time.Hours,time.Minutes,time.Seconds);LCD_DisplayStringLine(Line9,(uint8_t *)text);//局部刷新	frq1=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1);duty1=((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_2)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim15,TIM_CHANNEL_1)+1)));sprintf(text,"FRQ:%.2fHz   ",frq1);LCD_DisplayStringLine(Line1,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY:%.2f%%   ",duty1);LCD_DisplayStringLine(Line2,(uint8_t *)text);//局部刷新	frq2=1000000.0f/(HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1);duty2=((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_1)+1)*100.0f/((HAL_TIM_ReadCapturedValue(&htim3,TIM_CHANNEL_2)+1)));sprintf(text,"FRQ2:%.2fHz   ",frq2);LCD_DisplayStringLine(Line3,(uint8_t *)text);//局部刷新	sprintf(text,"DUTY2:%.2f%%   ",duty2);LCD_DisplayStringLine(Line4,(uint8_t *)text);//局部刷新		adc_data_PB15=adc_read_os(&hadc2);sprintf(text,"PB15:%.4fV   ",adc_data_PB15);LCD_DisplayStringLine(Line5,(uint8_t *)text);//局部刷新	eep_num=eeprom_read(8);eep_frq=eeprom_read16(10);eep_adc=eeprom_read_f(12);sprintf(text,"EEP:%d,%d,%.2f   ",eep_num,eep_frq,eep_adc);LCD_DisplayStringLine(Line6,(uint8_t *)text);//局部刷新	sprintf(text,"ADC1:%.3f,2:%.3f   ",adc_Buf[0]*3.3f/4096.0f,adc_Buf[1]*3.3f/4096.0f);LCD_DisplayStringLine(Line7,(uint8_t *)text);//局部刷新	
//	sprintf(uart_tx,"PB15:%.4fV   \r\n",adc_data_PB15);
//	HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);if(bkey[1].short_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	__HAL_TIM_SET_AUTORELOAD(&htim2,250-1);__HAL_TIM_SetCompare(&htim2,TIM_CHANNEL_2,125);bkey[1].short_flag=0;}		if(bkey[2].short_flag==1){/*     LCD演示     */eep_num+=1;eeprom_write(8,eep_num);HAL_Delay(10);eeprom_write16(10,(uint16_t)frq1);eeprom_write_f(12,adc_data_PB15);sprintf(text,"    KEY_2 down!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[2].short_flag=0;}		/*长按快速增加功能*/if(bkey[1].long_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 long!,%d  ",temp++);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	}	if(bkey[1].double_flag==1){/*     LCD演示     */sprintf(text,"    KEY_1 double!     ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	bkey[1].double_flag=0;}	/*长按后抬起执行*/
//	if(bkey[1].long_flag==1)
//	{
//	/*     LCD演示     */
//		sprintf(text,"    KEY_1 long!     ");
//		LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	
//		bkey[1].long_flag=0;
//	}	
}void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{if(htim->Instance==TIM6)key_serv_double();
}	
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{char old_pswd[10];char new_pswd[10];sscanf(uart_rx,"%3s-%3s",old_pswd,new_pswd);if(strcmp(old_pswd,passwd)==0){for(int i=0;i<3;i++)passwd[i]=new_pswd[i];sprintf(text,"new:%s    ",passwd);LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新		sprintf(uart_tx,"new:%s      \r\n",passwd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);		}else{sprintf(text,"Fail    ");LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新	sprintf(uart_tx,"old:%s  new:%s      \r\n",old_pswd,new_pswd);HAL_UART_Transmit(&huart1,(uint8_t *)uart_tx,strlen(uart_tx),50);				}HAL_UARTEx_ReceiveToIdle_IT(&huart1,(uint8_t *)uart_rx,50);
}

#include "key.h"struct Bkeys bkey[5]={0,0,0,0};uint8_t key_read()
{if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)==0) return 1;else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==0) return 2;else if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2)==0) return 3;else if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)==0) return 4;else return 0;
}void key_serv()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1)bkey[key_sta].short_flag=1;}else{for(int i=0;i<5;i++) bkey[i].age=0;}
}
/*长按快速增加功能*/
void key_serv_long()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1) bkey[key_sta].press=1;}else{for(int i=0;i<5;i++) {if(bkey[i].press==1&&bkey[i].long_flag==0)bkey[i].short_flag=1;bkey[i].age=0;bkey[i].press=0;bkey[i].long_flag=0;}}if(bkey[key_sta].age>69) bkey[key_sta].long_flag=1;
}
/*长按后抬起执行*/
//void key_serv_long()
//{
//	uint8_t key_sta=key_read();
//	if(key_sta!=0)
//	{
//		bkey[key_sta].age++;
//		if(bkey[key_sta].age>1) bkey[key_sta].press=1;
//	}
//	else
//	{
//		for(int i=0;i<5;i++) 
//		{
//			if(bkey[i].age>69) bkey[i].long_flag=1;
//			if(bkey[i].press==1&&bkey[i].long_flag==0)
//				bkey[i].short_flag=1;
//			bkey[i].age=0;
//			bkey[i].press=0;
//		}
//	}
//}void key_serv_double()
{uint8_t key_sta=key_read();if(key_sta!=0){bkey[key_sta].age++;if(bkey[key_sta].age>1) bkey[key_sta].press=1;}else{for(int i=0;i<5;i++) {if(bkey[i].double_ageEN==1&&bkey[i].press==1){bkey[i].double_flag=1;bkey[i].double_ageEN=0;bkey[i].press=0;}if(bkey[i].press&&bkey[i].long_flag==0){bkey[i].double_ageEN=1;}if(bkey[i].double_ageEN==1)bkey[i].double_age++;if(bkey[i].double_ageEN==1&&bkey[i].double_age>20){bkey[i].short_flag=1;bkey[i].double_ageEN=0;bkey[i].double_age=0;}bkey[i].age=0;bkey[i].press=0;bkey[i].long_flag=0;}}if(bkey[key_sta].age>69) bkey[key_sta].long_flag=1;
}

 

 i2c_hal.c


//
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);
}void eeprom_write(uint8_t addr,uint8_t dat)
{I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}uint8_t eeprom_read(uint8_t addr)
{uint8_t rec;I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CStop();I2CStart();I2CSendByte(0xa1);I2CWaitAck();rec=I2CReceiveByte();I2CSendNotAck();I2CStop();return rec;
}void eeprom_write16(uint8_t addr,uint16_t dat)
{uint8_t dat_h=dat>>8;uint8_t dat_l=dat;eeprom_write(addr,dat_h);HAL_Delay(10);eeprom_write(addr+1,dat_l);HAL_Delay(10);
}uint16_t  eeprom_read16(uint8_t addr)
{uint8_t dat_h=eeprom_read(addr);uint8_t dat_l=eeprom_read(addr+1);return (dat_h<<8)+dat_l;
}void eeprom_write_f(uint8_t addr,float dat)
{uint16_t dat_f=dat*100;uint8_t dat_h=dat_f>>8;uint8_t dat_l=dat_f;eeprom_write(addr,dat_h);HAL_Delay(10);eeprom_write(addr+1,dat_l);HAL_Delay(10);
}float  eeprom_read_f(uint8_t addr)
{uint8_t dat_h=eeprom_read(addr);uint8_t dat_l=eeprom_read(addr+1);return ((dat_h<<8)+dat_l)/100.0f;
}
void mcp_write(uint8_t dat)
{I2CStart();I2CSendByte(0x5e);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}

 


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