STM32智能加湿器

big\hero2025-09-28 17:32

项目简介

主控STM32f103c8t6

STM32F103C8T6是一款非常经典且应用广泛的微控制器，下面是它的核心信息概要。

​特性分类​ ​具体参数​
​核心架构​ 32位 ARM Cortex-M3 内核
​工作频率​ 最高 72 MHz
​存储资源​ 64 KB Flash, 20 KB SRAM
​工作电压​ 2.0 V - 3.6 V
​封装与I/O​ LQFP-48 封装，最多 37个可编程I/O引脚
​关键外设​ 2个12位ADC、7个定时器、2个I²C、3个USART、2个SPI、1个USB、1个CAN

🔧 核心功能与特点

STM32F103C8T6的功能十分丰富，这使得它能适应各种复杂的应用场景。

  • ​高性能内核 ​：其ARM Cortex-M3内核支持单周期乘法和硬件除法，在72MHz的工作频率下能提供高达1.25 DMIPS/MHz的性能，处理效率远超传统的8位和16位单片机

  • ​丰富的通信接口 ​：芯片集成了多种标准通信接口，包括3个USART 、2个I²C 、2个SPI 、1个USB 2.0全速接口 和1个CAN总线。这使得它可以轻松地与各种传感器、执行器、上位机及其他模块进行数据交换

  • ​强大的定时器和模拟功能​：内置了多达7个定时器，包括高级的PWM定时器（非常适合电机控制）、通用定时器和看门狗定时器同时，它拥有2个12位的ADC（模数转换器），转换时间快至1微秒，可以同时采集多达16个通道的模拟信号 。

  • ​灵活的电源管理 ​：芯片支持多种低功耗模式，包括睡眠、停止和待机模式，有助于在电池供电的应用中显著延长设备续航时间

按键

按键可采用堵塞的方式扫描，用法为简单的读取按键的状态，然后进行消抖，最后得到按键值，但是这个方法会堵塞主函数的运行，所以最好采用非堵塞的方式，在这里我采用的是江科大的非堵塞式按键扫描方式，下面式代码

复制代码 
#include "stm32f1xx_hal.h"	//链接HAL库
#include "Relay.h"
#include "Buzzer.h"
#include "oled.h"
#include "zzyy_OLED.h"

uint8_t steady_KeyState;  //按键的稳定值

uint8_t KeyNum,KeyTemp;


uint8_t Key_Get_Num(void)
{
	uint8_t temp = 0;
	temp = steady_KeyState;
	steady_KeyState = 0;
	return temp;
}


uint8_t Key_GetSatae(void)
{
	uint8_t Key_State = 0;  //按键的状态

	if(HAL_GPIO_ReadPin(GPIOB,  GPIO_PIN_10) == 0) Key_State = 1;
	else if(HAL_GPIO_ReadPin(GPIOB,  GPIO_PIN_0) == 0) Key_State = 2;
	else if(HAL_GPIO_ReadPin(GPIOA,  GPIO_PIN_6) == 0) Key_State = 3;
	
	return Key_State;
}


void Key_Tick(void)  //函数放在定时器，20秒扫描一次
{
	static uint8_t old_state= 0;
	static uint8_t new_state= 0;
	
	old_state = new_state;
	new_state = Key_GetSatae();
	
	if((old_state == 0)&&(new_state == 1)) steady_KeyState = 1;
	else if((old_state == 0)&&(new_state == 2)) steady_KeyState = 2;
	else if((old_state == 0)&&(new_state == 3)) steady_KeyState = 3;

}

////屏幕标志位

//uint32_t Screen_Flag;

//光标标志位
/*
0:无光标
1：光标在切换智能模式和手动模式上面
2：如果在手动模式的话，光标在开关加湿器的上面
3: 光标在湿度阈值
4：光标在水位阈值上
*/
uint8_t Cuesor_Flag;

uint8_t Mode_Flag; //模式标志位
uint8_t Relay_Flag = 0;  //继电器标志位  0为关 1为开


void Key_Pro(void)
{
	KeyTemp = Key_Get_Num();
	if(KeyTemp) KeyNum = KeyTemp;
	
	switch(KeyNum)
	{
		case 1:  //按键1  设置为切换按键
			switch(Cuesor_Flag)
			{
				case 0:
					Cuesor_Flag = 1;
				break;
				
				case 1:
					if(Mode_Flag == 1) Cuesor_Flag = 2;
						else
							Cuesor_Flag = 3;
				break;
				
				case 2:
					Cuesor_Flag = 3; 
				break;
				
				case 3:
					Cuesor_Flag = 4; 
				break;
			}
			KeyNum = 0;
		break;
		
		case 2:  //按键2
			if(Cuesor_Flag == 1)
			{
				Mode_Flag = !Mode_Flag;
				OLED_Printf(0, 0, "         ");
			}
			else if(Cuesor_Flag == 3)
			{
				Humi_Limt = Humi_Limt + 5;
				if(Humi_Limt >=100) Humi_Limt =0;
			}
			
			else if(Cuesor_Flag == 4)
			{
				Water_Deep_Limt = Water_Deep_Limt +5;
				if(Water_Deep_Limt >= 100) Water_Deep_Limt = 0;
			}
			else if(Cuesor_Flag == 2)
			{
				Relay_Flag = !Relay_Flag;
				Relay_Control(Relay_Flag);
			}
			KeyNum = 0;
			
			
		break;
		
		case 3:  //按键3
			KeyNum = 0;
			if(Cuesor_Flag == 3)
			{
				Humi_Limt = Humi_Limt -5;
				if(Humi_Limt >= 250) Humi_Limt =100;
			}
		
			else if(Cuesor_Flag == 4)
			{
				Water_Deep_Limt = Water_Deep_Limt -5;
				if(Water_Deep_Limt >= 250) Water_Deep_Limt =100;

			}
			break;
	}		
}

#ifndef __KEY_H
#define __KEY_H


extern uint8_t KeyNum,KeyTemp;

extern uint8_t Cuesor_Flag;

extern uint8_t Mode_Flag; //模式标志位

extern uint8_t Relay_Flag;  //继电器标志位  0为关 1为开


uint8_t Key_Get_Num(void);  //获取按键键码值函数
void Key_Tick(void);  //函数放在定时器，20秒扫描一次

void Key_Pro(void);



#endif

0.96寸OLED显示屏

特性分类 具体参数/描述
​屏幕尺寸​ 0.96英寸（对角线）
​分辨率​ 128 × 64 像素
​接口类型​ IIC（I²C），仅需SDA（数据线）和SCL（时钟线）两根信号线
​驱动芯片​ 通常采用SSD1306驱动芯片
​工作电压​ 3.3V 或 5V DC
​主要颜色​ 白色、蓝色或黄蓝双色
​核心优势​ 自发光、高对比度、低功耗、响应速度快、视角广

  • ​自发光与高对比度​：OLED屏幕的每个像素点都能独立发光，显示黑色时像素点完全关闭，从而实现极高的对比度和纯正的黑色

    这使得它在显示效果上优于需要背光板的LCD屏幕。

  • ​低功耗​：由于自发光特性，只有在显示内容时相应的像素点才消耗电能，尤其在显示深色背景或静态内容时功耗非常低，非常适合电池供电的便携设备

  • ​简化硬件连接 ​：IIC接口大大简化了与微控制器（如STM32、ESP8266/ESP32）的连接，只需要连接SDA 和SCL两条数据线以及电源和地线即可

    常见的设备地址通常是0x3C。

我们采用的是hal库的驱动方法

OLED.c

复制代码 
/***********************************
	本驱动文件仅适配HAL库版本
***********************************/
#include "font.h"	//字库文件
#include "oled.h"		//声明
#include "i2c.h"
#include <stdarg.h>
#include <stdio.h>



/* 控制宏 */
#define LEFT 			0x27
#define RIGHT 			0x26
#define UP 				0X29
#define DOWM 			0x2A
#define ON				0xA7
#define OFF				0xA6


/* IIC接口选择 */
#define IICx hi2c1


//oled显示尺寸
uint16_t const displayWidth                = 128;
uint16_t const displayHeight               = 64;

/*  OLED显存
[0]0 1 2 3 ... 127	
[1]0 1 2 3 ... 127	
[2]0 1 2 3 ... 127	
[3]0 1 2 3 ... 127	
[4]0 1 2 3 ... 127	
[5]0 1 2 3 ... 127	
[6]0 1 2 3 ... 127	
[7]0 1 2 3 ... 127 */
static uint8_t OLED_RAM[8][128];//定义GDDRAM缓存区

void HAL_I2C_WriteByte(uint8_t addr,uint8_t data)
{
  uint8_t TxData[2] = {addr,data};
	HAL_I2C_Master_Transmit(&IICx,0X78,(uint8_t*)TxData,2,10);
}

/**************************************************************
	 Prototype      : void WriteCmd(uint8_t IIC_Command)
	 Parameters     : IIC_Command
	 return					: none
	 Description    : 写命令
***************************************************************/
void WriteCmd(uint8_t IIC_Command)
{
	HAL_I2C_WriteByte(0x00, IIC_Command);
}

/**************************************************************
	 Prototype      : void WriteDat(uint8_t IIC_Data)
	 Parameters     : IIC_Data
	 return					: none
	 Description    : 写数据
***************************************************************/
void WriteDat(uint8_t IIC_Data)
{
	HAL_I2C_WriteByte(0x40, IIC_Data);
}

/**************************************************************
	 Prototype      : void OLED_Init(void)
	 Parameters     : none
	 return					: none
	 Description    : 初始化OLED模块
***************************************************************/
void OLED_Init(void) 
{
	HAL_Delay(500);
	
	WriteCmd(0xAE); //开显示
	WriteCmd(0x20);	//设置内存寻址模式	
	
	WriteCmd(0x10);	//00，水平寻址模式;01，垂直寻址模式;10，页面寻址模式(重置);11，无效
	WriteCmd(0xb0);	//为页面寻址模式设置页面开始地址，0-7
	WriteCmd(0x00); //---设置低列地址
	WriteCmd(0x10); //---设置高列地址

	WriteCmd(0xc8);	//设置COM输出扫描方向
	WriteCmd(0x40); //--设置起始行地址
	WriteCmd(0x81); //--set contrast control register
	WriteCmd(0xff); //亮度调节 0x00~0xff
	WriteCmd(0xa1); //--设置段重新映射0到127
	WriteCmd(0xa6); //--设置正常显示
	WriteCmd(0xa8); //--设置复用比(1 ~ 64)
	WriteCmd(0x3F); //
	WriteCmd(0xa4); //0xa4,输出遵循RAM内容;0xa5,Output忽略RAM内容
	WriteCmd(0xd3); //-设置显示抵消
	WriteCmd(0x00); //-not offset
	WriteCmd(0xd5); //--设置显示时钟分频/振荡器频率
	WriteCmd(0xf0); //--设置分率
	WriteCmd(0xd9); //--设置pre-charge时期
	WriteCmd(0x22); //
	WriteCmd(0xda); //--设置com大头针硬件配置
	WriteCmd(0x12);
	WriteCmd(0xdb); //--设置vcomh
	WriteCmd(0x20); //0x20,0.77xVcc
	WriteCmd(0x8d); //--设置DC-DC
	WriteCmd(0x14); //
	WriteCmd(0xaf); //--打开oled面板
	
	OLED_FullyClear();//清屏
}

/**************************************************************
	 Prototype      : void OLED_ON(void)
	 Parameters     : none
	 return					: none
	 Description    : 将OLED从休眠中唤醒
***************************************************************/
void OLED_ON(void)
{
	WriteCmd(0X8D);  //设置电荷泵
	WriteCmd(0X14);  //开启电荷泵
	WriteCmd(0XAF);  //OLED唤醒
}

/**************************************************************
	 Prototype      : void OLED_OFF(void)
	 Parameters     : none
	 return					: none
	 Description    : 让OLED休眠 -- 休眠模式下,OLED功耗不到10uA
***************************************************************/
void OLED_OFF(void)
{
	WriteCmd(0X8D);  //设置电荷泵
	WriteCmd(0X10);  //关闭电荷泵
	WriteCmd(0XAE);  //OLED休眠
}

/**************************************************************
	 Prototype      : void OLED_RefreshRAM(void)
	 Parameters     : none
	 return					: none
	 Description    : 全屏填充
***************************************************************/
void OLED_RefreshRAM(void)
{
	// 页寻址模式填充
	for(uint16_t m = 0; m < displayHeight/8; m++)
	{
		WriteCmd(0xb0+m);		//设置页地址b0~b7
		WriteCmd(0x00);		//设置显示位置---列低地址00-0f
		WriteCmd(0x10);		//设置显示位置---列高地址10-1f
		for(uint16_t n = 0; n < displayWidth; n++)
		{
				WriteDat(OLED_RAM[m][n]);
		}
	} 
}

/**************************************************************
	 Prototype      : void OLED_ClearRAM(void)
	 Parameters     : none
	 return					: none
	 Description    : 清除数据缓冲区
***************************************************************/
void OLED_ClearRAM(void)
{
	for(uint16_t m = 0; m < displayHeight/8; m++)
	{
		for(uint16_t n = 0; n < displayWidth; n++)
		{
				OLED_RAM[m][n] = 0x00;
		}
	}
}


/**************************************************************
	 Prototype      : void OLED_Fill(uint8_t fill_Data)
	 Parameters     : fill_Data 填充的1字节数据
	 return					: none
	 Description    : 全屏填充 0x00~0xff
***************************************************************/
void OLED_FullyFill(uint8_t fill_Data)
{
	for(uint16_t m = 0; m < displayHeight/8; m++)
	{
		for(uint16_t n = 0; n < displayWidth; n++)
		{
				OLED_RAM[m][n] = fill_Data;
		}
	}
	
	OLED_RefreshRAM();
}

/**************************************************************
	 Prototype      : void OLED_FullyClear(void)
	 Parameters     : none
	 return					: none
	 Description    : 全屏清除
***************************************************************/
void OLED_FullyClear(void)
{
		OLED_FullyFill(RESET_PIXEL);
}

/**************************************************************
	Prototype      :  void OLED_SetPixel(int16_t x, int16_t y, uint8_t set_pixel)
	Parameters     : 	x,y -- 起始点坐标(x:0~127, y:0~63); 
										set_pixel	 该点的数据  SET_PIXEL = 1, RESET_PIXEL = 0
	return				 :  none
	Description    : 	设置坐标像素点数据
***************************************************************/
void OLED_SetPixel(int16_t x, int16_t y, uint8_t set_pixel)
{ 
	if (x >= 0 && x < displayWidth && y >= 0 && y < displayHeight) {
		if(set_pixel){
				OLED_RAM[y/8][x] |= (0x01 << (y%8));
		}  
		else{
				OLED_RAM[y/8][x] &= ~(0x01 << (y%8));
		}
	}
}

/**************************************************************
	Prototype      :  void OLED_GetPixel(int16_t x, int16_t y)
	Parameters     : 	x,y -- 起始点坐标(x:0~127, y:0~63); 
	return				 :  PixelStatus 像素点状态 	SET_PIXEL = 1, RESET_PIXEL = 0
	Description    : 	获得坐标像素点数据	
***************************************************************/
PixelStatus OLED_GetPixel(int16_t x, int16_t y)
{
	 if(OLED_RAM[y/8][x] >> (y%8) & 0x01)
		 return SET_PIXEL;
	 
	return	RESET_PIXEL;
}

/**************************************************************
	Prototype      : void OLED_ShowStr(int16_t x, int16_t y, uint8_t ch[], uint8_t TextSize)
	Parameters     : 	x,y -- 起始点坐标(x:0~127, y:0~63); 
										ch[] -- 要显示的字符串; 
										TextSize -- 字符大小(1:6*8 ; 2:8*16)
	return				 :  none
	Description    : 	显示codetab.h中的ASCII字符,有6*8和8*16可选择
***************************************************************/
void OLED_ShowStr(int16_t x, int16_t y, uint8_t ch[], uint8_t TextSize)
{ 
	if (x >= 0 && x < displayWidth && y >= 0 && y < displayHeight) {
		int32_t c = 0;
		uint8_t j = 0;
	
		switch(TextSize)
		{
			case 1:
			{
				while(ch[j] != '\0')
				{
					c = ch[j] - 32;
					if(c < 0)	//无效字符
						break;
					
					if(x >= 125 || (127-x < 6))//一行最大显示字符数：21字节显示,多出两列，不显示 || 剩余列小于6不能显示完整字符，换行显示
					{
						x = 0;
						y += 8;//换行显示
						if(63 - y < 8)	// 不足以显示一行时不显示
							break;
					}
					for(uint8_t m = 0; m < 6; m++)
					{
						for(uint8_t n = 0; n < 8; n++)
						{
							OLED_SetPixel(x+m, y+n, (F6x8[c][m] >> n) & 0x01);
						}
					}
					x += 6;
					j++;
				}
			}break;
			case 2:
			{
				while(ch[j] != '\0')
				{
					c = ch[j] - 32;
					if(c < 0)	//无效字符
						break;
					
					if(x >= 127 || (127-x < 8))//16字节显示 || 剩余列小于8不能显示完整字符，换行显示
					{
						x = 0;
						y += 16;//换行显示
						if(63 - y < 16)	// 不足以显示一行时不显示
							break;
					}
					for(uint8_t m = 0; m < 2; m++)
					{
						for(uint8_t n = 0; n < 8; n++)
						{
							for(uint8_t i = 0; i < 8; i++)
							{
									OLED_SetPixel(x+n, y+i+m*8, (F8X16[c][n+m*8] >> i) & 0x01);
							}
						}	
					}
					x += 8;
					j++;
				}
			}break;
		}
	}
	OLED_RefreshRAM();
}

/**************************************************************
	 Prototype      : void OLED_ShowCN(int16_t x, int16_t y, uint8_t* ch)
	 Parameters     : x,y -- 起始点坐标(x:0~127, y:0~7); 
										CN[]:汉字在codetab.h中的索引
	 return				  : none
	 Description    : 显示codetab.h中的汉字,16*16点阵
***************************************************************/
void OLED_ShowCN(int16_t x, int16_t y, uint8_t* ch)
{
	if (x >= 0 && x < displayWidth && y >= 0 && y < displayHeight) {
		int32_t  len = 0,offset = sizeof(F16x16_CN[0].index);
		
		while(ch[len] != '\0')
		{
			if(x >= 127 || (127-x < 16))//8个汉字显示||剩余列小于16不能显示完整字符，换行显示
			{
				x = 0;
				y += 16;
				if(63 - y < 16)	// 不足以显示一行时不显示
					break;
			}
					
			//需要处理输入数据大于显示数据的问题
			for(uint8_t i = 0; i < sizeof(F16x16_CN)/sizeof(GB2312_CN); i++)
			{
				if(((F16x16_CN[i].index[0] == ch[len]) && (F16x16_CN[i].index[1] == ch[len+1]))){
						for(uint8_t m = 0; m < 2; m++)	//页
						{
								for(uint8_t n = 0; n < 16; n++) // 列
								{
										for(uint8_t j = 0; j < 8; j++)	// 行
										{
											OLED_SetPixel(x+n, y+j+m*8, (F16x16_CN[i].encoder[n+m*16] >> j) & 0x01);
										}
								}
						}			
						x += 16;
						len += offset;
						break;
				}
				else if(F16x16_CN[i].index[0] == ch[len] && ch[len] == 0x20){
					for(uint8_t m = 0; m < 2; m++)
					{
							for(uint8_t n = 0; n < 16; n++)
							{
								for(uint8_t j = 0; j < 8; j++)
								{
									OLED_SetPixel(x+n, y+j+m*8, (F16x16_CN[i].encoder[n+m*16] >> j) & 0x01);
								}								
							}	
					}			
					x += 16;
					len++;
					break;
				}
			}
		}
	}
	OLED_RefreshRAM();
}

/**************************************************************
	 Prototype      : void OLED_Show_MixedCH(int16_t x, int16_t y, uint8_t* ch)
	 Parameters     : x,y -- 起始点坐标(x:0~127, y:0~7); CN[]:汉字在codetab.h中的索引
	 return				  : none
	 Description    : 显示codetab.h中的汉字,16*16点阵,英文,8*16点阵
***************************************************************/
void OLED_ShowMixedCH(int16_t x, int16_t y, uint8_t* ch)
{
	if (x >= 0 && x < displayWidth && y >= 0 && y < displayHeight) {
		int32_t len = 0, c,offset = sizeof(F16x16_CN[0].index);

		while(ch[len] != '\0')
		{
			if(ch[len] >= 0xa1)//GB2312从0xA1A0开始
			{
				for(uint8_t i = 0; i < sizeof(F16x16_CN)/sizeof(GB2312_CN); i++)
				{
					if(((F16x16_CN[i].index[0] == ch[len]) && (F16x16_CN[i].index[1] == ch[len+1])))
					{
						if(x >= 127|| (127-x < 16))//8个汉字显示||剩余列小于16不能显示完整字符，换行显示
						{
							x = 0;
							y += 16;
							if(63 - y < 16)	// 不足以显示一行时不显示
								break;
						}
						for(uint8_t m = 0; m < 2; m++)	//页
						{
								for(uint8_t n = 0; n < 16; n++)	//列
								{
									for(uint8_t j = 0; j < 8; j++)	//行
									{
	
										OLED_SetPixel(x+n, y+j+m*8, (F16x16_CN[i].encoder[n+m*16] >> j) & 0x01);
									}		
								}								
						}			
						x += 16;
						len += offset;
						break;
					}
				}
			}
			else if(ch[len] <= 127)//ASCII编码范围0-127
			{
				c = ch[len] - 32;
				if(c < 0)	// 无效字符
					break;
				if(x >= 127 || (127-x < 8))//16字节显示 || 剩余列小于8不能显示完整字符，换行显示
				{
					x = 0;
					y += 16;
					if(63 - y < 16)	// 不足以显示一行时不显示
								break;
				}
				for(uint8_t m = 0; m < 2; m++)
				{
						for(uint8_t n = 0; n < 8; n++)
						{
							for(uint8_t i = 0; i < 8; i++)
							{
									OLED_SetPixel(x+n, y+i+m*8, (F8X16[c][n+m*8] >> i) & 0x01);
							}
						}
				}
				x += 8;
				len++;
			}
		}
	}
	OLED_RefreshRAM();
}

/***************************************************************
	 Prototype      :	void OLED_DrawBMP(int16_t x0,int16_t y0,int16_t L,int16_t H,const uint8_t BMP[])
	 Parameters     : (x0,y0)坐标长L宽H区域绘制图像BMP
										0<=x0<=127 0<=y0<=63 0<=L+x0<=127 0<=H+y0<= 63 图像取模 纵向取模，字节倒序
	 return				  : none
	 Description    : 区域图像绘制，显示BMP位图,格式使用二维数组存储
***************************************************************/
void OLED_DrawBMP(int16_t x0,int16_t y0,int16_t L,int16_t H,const uint8_t BMP[])
{
	if (x0 >= 0 && x0 < displayWidth && x0+L <= displayWidth &&\
		y0 >= 0 && y0 < displayHeight && y0+H <= displayHeight) {
		
		uint8_t *p = (uint8_t *)BMP;
		for(int16_t y = y0; y < y0+H; y+=8)
		{
			for(int16_t x = x0; x < x0+L; x++)
			{
				for(int16_t i = 0; i < 8; i++)
				{
//					OLED_SetPixel(x, y+i, ((*((uint8_t *)BMP+(x-x0)+L*((y-y0)/8))) >> i) & 0x01);
						OLED_SetPixel(x, y+i, ((*p) >> i) & 0x01);
				}
				p++;
			}
		}
	}
	OLED_RefreshRAM();
}

/***************************************************************
	 Prototype      :	void OLED_AreaFill(int16_t x0,int16_t y0,int16_t L,int16_t H)
	 Parameters     : 区域内容清除，(x0,y0)坐标长L宽H区域
										0<=x0<=127 0<=y0<=63 0<=L+x0<=127 0<=H+y0<= 63 图像取模 纵向取模，字节倒序
	 return				  : none
	 Description    : 规定区域内容填充
***************************************************************/
void OLED_AreaFill(int16_t x0,int16_t y0,int16_t L,int16_t H, uint8_t fill_data)
{
	if (x0 >= 0 && x0 < displayWidth && x0+L <= displayWidth &&\
		y0 >= 0 && y0 < displayHeight && y0+H <= displayHeight) {
		
		for(int16_t y = y0; y < y0+H; y++)
		{
			for(int16_t x = x0; x < x0+L; x++)
			{
				for(int16_t i = 0; i < 8; i++)
					{
							OLED_SetPixel(x, y+i, (fill_data >> i) & SET_PIXEL);
					}
			}
		}
		OLED_RefreshRAM();
	}
}

/***************************************************************
	 Prototype      :	void OLED_AreaCLR(int16_t x0,int16_t y0,int16_t L,int16_t H)
	 Parameters     : (x0,y0)坐标长L宽H区域
										0<=x0<=127 0<=y0<=63 0<=L+x0<=127 0<=H+y0<= 63 图像取模 纵向取模，字节倒序
	 return				  : none
	 Description    : 规定区域内容清除
***************************************************************/
void OLED_AreaClear(int16_t x0,int16_t y0,int16_t L,int16_t H)
{
	if (x0 >= 0 && x0 < displayWidth && x0+L <= displayWidth &&\
		y0 >= 0 && y0 < displayHeight && y0+H <= displayHeight) {
		
		for(int16_t y = y0; y < y0+H; y+=8)
		{
			for(int16_t x = x0; x < x0+L; x++)
			{
				for(int16_t i = 0; i < 8; i++)
					{
							OLED_SetPixel(x, y+i, RESET_PIXEL);
					}
			}
		}		
		OLED_RefreshRAM();
	}
}

/***************************************************************
	 Prototype      :	void OLED_FullyToggle(void)
	 Parameters     : none
	 return				  : none
	 Description    : 缓冲区数据取反后刷新到GDDRAM
***************************************************************/
void OLED_FullyToggle(void)
{
	for(uint16_t m = 0; m < displayHeight/8; m++)
	{
		for(uint16_t n = 0; n < displayWidth; n++)
		{
				OLED_RAM[m][n] = ~OLED_RAM[m][n];
		}
	}
	OLED_RefreshRAM();
}
/***************************************************************
	 Prototype      :	void OLED_AreaToggle(int16_t x0,int16_t y0,int16_t L,int16_t H)
	 Parameters     : (x0,y0)坐标长L宽H区域
										0<=x0<=127 0<=y0<=63 0<=L+x0<=127 0<=H+y0<= 63 图像取模 纵向取模，字节倒序
	 return				  : none
	 Description    : 规定区域内容取反
***************************************************************/
void OLED_AreaToggle(int16_t x0,int16_t y0,int16_t L,int16_t H)
{
	if (x0 >= 0 && x0 < displayWidth && x0+L <= displayWidth &&\
		y0 >= 0 && y0 < displayHeight && y0+H <= displayHeight) {
		
		for(int16_t y = y0; y < y0+H; y+=8)
		{
			for(int16_t x = x0; x < x0+L; x++)
			{
				for(int16_t i = 0; i < 8; i++)
					{
							OLED_SetPixel(x, y+i, !OLED_GetPixel(x, y+i));
					}
			}
		}		
		OLED_RefreshRAM();
	}
}

/****************************************************************
	全屏垂直偏移,0->63方向
	方向垂直向上,范围0-63
	方向垂直向下,范围63-0
****************************************************************/
void OLED_VerticalShift(void)
{
	for(uint8_t i = 0; i < displayHeight; i++)
		{
			WriteCmd(0xd3);//设置显示偏移，0->63方向
			WriteCmd(i);//偏移量
			HAL_Delay(40);//延时时间
		}
}

/****************************************************************
	屏幕内容水平全屏滚动播放
	左		LEFT	0x27
	右		RIGHT	0x26
****************************************************************/
void OLED_HorizontalShift(uint8_t direction)

{
	WriteCmd(direction);//设置滚动方向
	WriteCmd(0x00);//虚拟字节设置，默认为0x00
	WriteCmd(0x00);//设置开始页地址
	WriteCmd(0x05);//设置每个滚动步骤之间的时间间隔的帧频
	WriteCmd(0x07);//设置结束页地址
	WriteCmd(0x00);//虚拟字节设置，默认为0x00
	WriteCmd(0xff);//虚拟字节设置，默认为0xff
	WriteCmd(0x2f);//开启滚动-0x2f，禁用滚动-0x2e，禁用需要重写数据
}

/****************************************************************
	屏幕内容垂直水平全屏滚动播放
	上		UP		0x29
	下		DOWN	0x2A
****************************************************************/
void OLED_VerticalAndHorizontalShift(uint8_t direction)
{
	WriteCmd(direction);//设置滚动方向
	WriteCmd(0x00);//虚拟字节设置，默认为0x00
	WriteCmd(0x00);//设置开始页地址
	WriteCmd(0x05);//设置每个滚动步骤之间的时间间隔的帧频
	WriteCmd(0x07);//设置结束页地址
	WriteCmd(0x01);//垂直滚动偏移量
	
	WriteCmd(0x2f);//开启滚动-0x2f，禁用滚动-0x2e，禁用需要重写数据
}

/****************************************************************
	屏幕内容取反显示
	开	ON	0xA7
	关	OFF	0xA6	默认此模式，设置像素点亮
****************************************************************/
void OLED_DisplayMode(uint8_t mode)
{
	WriteCmd(mode);
}

/****************************************************************
	屏幕亮度调节
	intensity	0-255
	默认为0x7f
****************************************************************/
void OLED_IntensityControl(uint8_t intensity)
{
	WriteCmd(0x81);
	WriteCmd(intensity);
}



// 自定义OLED打印函数（支持可变参数）
void OLED_Printf(uint8_t x, uint8_t y, const char *format, ...) 
{
    uint8_t buff[30]; // 确保缓冲区足够大
    va_list args;
    
    va_start(args, format); // 初始化可变参数列表
    vsnprintf((char *)buff, sizeof(buff), format, args); // 安全格式化
    va_end(args); // 清理可变参数
    
    OLED_ShowMixedCH(x, y, buff); // 调用显示函数
}

OLED.h

复制代码 
#ifndef OLED_H__
#define OLED_H__

#include "stm32f1xx_hal.h"	//链接HAL库
/* BMP图片声明 
	图片格式为二位数组，下标分别对应图片的宽和高：
		BMP_xx[H/8][L];
*/
extern const uint8_t BMP_Picture[64/8][64];


/* 设置坐标点的状态 */
typedef enum 
{
	SET_PIXEL = 0x01,
  RESET_PIXEL = 0x00, 
} PixelStatus;


/* 功能函数声明 */
//写数据，硬件IIC使用
void HAL_I2C_WriteByte(uint8_t addr,uint8_t data);
//写命令
void WriteCmd(uint8_t IIC_Command);
//写数据
void WriteDat(uint8_t IIC_Data);
//初始化OLED
void OLED_Init(void);
//开启电荷泵
void OLED_ON(void);
//关闭电荷泵
void OLED_OFF(void);
//刷新缓冲区数据到GDDRAM
void OLED_RefreshRAM(void);
//清除数据缓冲区OLED_RAM buffer
void OLED_ClearRAM(void);
//全屏填充
void OLED_FullyFill(uint8_t fill_Data);
//清屏
void OLED_FullyClear(void);
//设置坐标像素点数据
void OLED_SetPixel(int16_t x, int16_t y, uint8_t set_pixel);
//获得坐标像素点数据
PixelStatus OLED_GetPixel(int16_t x, int16_t y);

/* 显示指定字符和图片时需要手动刷新缓冲区到GDDRAM 
* function list: OLED_ShowStr\OLED_ShowCN\OLED_Show_MixedCH\OLED_DrawBMP
*/
//显示英文字符串
void OLED_ShowStr(int16_t x, int16_t y, uint8_t ch[], uint8_t TextSize);
//显示中文字符串
void OLED_ShowCN(int16_t x, int16_t y, uint8_t* ch);
//显示中英文混合文字
void OLED_ShowMixedCH(int16_t x, int16_t y, uint8_t* ch);
//显示图片
void OLED_DrawBMP(int16_t x0,int16_t y0,int16_t L,int16_t H,const uint8_t BMP[]);

//区域填充
void OLED_AreaFill(int16_t x0,int16_t y0,int16_t L,int16_t H, uint8_t fill_data);
//区域清除
void OLED_AreaClear(int16_t x0,int16_t y0,int16_t L,int16_t H);
//全屏切换显示
void OLED_FullyToggle(void);
//区域切换显示
void OLED_AreaToggle(int16_t x0,int16_t y0,int16_t L,int16_t H);
//全屏垂直滚动播放
void OLED_VerticalShift(void);
//全屏水平滚动播放
void OLED_HorizontalShift(uint8_t direction);
//全屏同时垂直和水平滚动播放
void OLED_VerticalAndHorizontalShift(uint8_t direction);
//屏幕内容取反显示
void OLED_DisplayMode(uint8_t mode);
//屏幕亮度调节
void OLED_IntensityControl(uint8_t intensity);
//可变参数的打印函数
void OLED_Printf(uint8_t x, uint8_t y, const char *format, ...);

#endif

字库

复制代码 
/************************************************************************************
*  Copyright (c), 2021.04, ZeroCHN.
*            All rights reserved.
*
* Description:
* 1. 128*64点整OLED模块功能演示程序的字表
* 2. 取字方式 -- 共阴、列行式、逆向输出
*
*	version: 1.2
*
*************************************************************************************/
#ifndef FONT_H__
#define FONT_H__
#ifdef __cplusplus
 extern "C" {
#endif

#include "stm32f1xx_hal.h"

/************************************6*8的点阵************************************/
const uint8_t F6x8[][6] =
{
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00,// sp
	0x00, 0x00, 0x00, 0x2f, 0x00, 0x00,// !
	0x00, 0x00, 0x07, 0x00, 0x07, 0x00,// "
	0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14,// #
	0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12,// $
	0x00, 0x62, 0x64, 0x08, 0x13, 0x23,// %
	0x00, 0x36, 0x49, 0x55, 0x22, 0x50,// &
	0x00, 0x00, 0x05, 0x03, 0x00, 0x00,// '
	0x00, 0x00, 0x1c, 0x22, 0x41, 0x00,// (
	0x00, 0x00, 0x41, 0x22, 0x1c, 0x00,// )
	0x00, 0x14, 0x08, 0x3E, 0x08, 0x14,// *
	0x00, 0x08, 0x08, 0x3E, 0x08, 0x08,// +
	0x00, 0x00, 0x00, 0xA0, 0x60, 0x00,// ,
	0x00, 0x08, 0x08, 0x08, 0x08, 0x08,// -
	0x00, 0x00, 0x60, 0x60, 0x00, 0x00,// .
	0x00, 0x20, 0x10, 0x08, 0x04, 0x02,// /
	0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E,// 0
	0x00, 0x00, 0x42, 0x7F, 0x40, 0x00,// 1
	0x00, 0x42, 0x61, 0x51, 0x49, 0x46,// 2
	0x00, 0x21, 0x41, 0x45, 0x4B, 0x31,// 3
	0x00, 0x18, 0x14, 0x12, 0x7F, 0x10,// 4
	0x00, 0x27, 0x45, 0x45, 0x45, 0x39,// 5
	0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30,// 6
	0x00, 0x01, 0x71, 0x09, 0x05, 0x03,// 7
	0x00, 0x36, 0x49, 0x49, 0x49, 0x36,// 8
	0x00, 0x06, 0x49, 0x49, 0x29, 0x1E,// 9
	0x00, 0x00, 0x36, 0x36, 0x00, 0x00,// :
	0x00, 0x00, 0x56, 0x36, 0x00, 0x00,// ;
	0x00, 0x08, 0x14, 0x22, 0x41, 0x00,// <
	0x00, 0x14, 0x14, 0x14, 0x14, 0x14,// =
	0x00, 0x00, 0x41, 0x22, 0x14, 0x08,// >
	0x00, 0x02, 0x01, 0x51, 0x09, 0x06,// ?
	0x00, 0x32, 0x49, 0x59, 0x51, 0x3E,// @
	0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C,// A
	0x00, 0x7F, 0x49, 0x49, 0x49, 0x36,// B
	0x00, 0x3E, 0x41, 0x41, 0x41, 0x22,// C
	0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C,// D
	0x00, 0x7F, 0x49, 0x49, 0x49, 0x41,// E
	0x00, 0x7F, 0x09, 0x09, 0x09, 0x01,// F
	0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A,// G
	0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F,// H
	0x00, 0x00, 0x41, 0x7F, 0x41, 0x00,// I
	0x00, 0x20, 0x40, 0x41, 0x3F, 0x01,// J
	0x00, 0x7F, 0x08, 0x14, 0x22, 0x41,// K
	0x00, 0x7F, 0x40, 0x40, 0x40, 0x40,// L
	0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F,// M
	0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F,// N
	0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E,// O
	0x00, 0x7F, 0x09, 0x09, 0x09, 0x06,// P
	0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E,// Q
	0x00, 0x7F, 0x09, 0x19, 0x29, 0x46,// R
	0x00, 0x46, 0x49, 0x49, 0x49, 0x31,// S
	0x00, 0x01, 0x01, 0x7F, 0x01, 0x01,// T
	0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F,// U
	0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F,// V
	0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F,// W
	0x00, 0x63, 0x14, 0x08, 0x14, 0x63,// X
	0x00, 0x07, 0x08, 0x70, 0x08, 0x07,// Y
	0x00, 0x61, 0x51, 0x49, 0x45, 0x43,// Z
	0x00, 0x00, 0x7F, 0x41, 0x41, 0x00,// [
	0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55,// 55
	0x00, 0x00, 0x41, 0x41, 0x7F, 0x00,// ]
	0x00, 0x04, 0x02, 0x01, 0x02, 0x04,// ^
	0x00, 0x40, 0x40, 0x40, 0x40, 0x40,// _
	0x00, 0x00, 0x01, 0x02, 0x04, 0x00,// '
	0x00, 0x20, 0x54, 0x54, 0x54, 0x78,// a
	0x00, 0x7F, 0x48, 0x44, 0x44, 0x38,// b
	0x00, 0x38, 0x44, 0x44, 0x44, 0x20,// c
	0x00, 0x38, 0x44, 0x44, 0x48, 0x7F,// d
	0x00, 0x38, 0x54, 0x54, 0x54, 0x18,// e
	0x00, 0x08, 0x7E, 0x09, 0x01, 0x02,// f
	0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C,// g
	0x00, 0x7F, 0x08, 0x04, 0x04, 0x78,// h
	0x00, 0x00, 0x44, 0x7D, 0x40, 0x00,// i
	0x00, 0x40, 0x80, 0x84, 0x7D, 0x00,// j
	0x00, 0x7F, 0x10, 0x28, 0x44, 0x00,// k
	0x00, 0x00, 0x41, 0x7F, 0x40, 0x00,// l
	0x00, 0x7C, 0x04, 0x18, 0x04, 0x78,// m
	0x00, 0x7C, 0x08, 0x04, 0x04, 0x78,// n
	0x00, 0x38, 0x44, 0x44, 0x44, 0x38,// o
	0x00, 0xFC, 0x24, 0x24, 0x24, 0x18,// p
	0x00, 0x18, 0x24, 0x24, 0x18, 0xFC,// q
	0x00, 0x7C, 0x08, 0x04, 0x04, 0x08,// r
	0x00, 0x48, 0x54, 0x54, 0x54, 0x20,// s
	0x00, 0x04, 0x3F, 0x44, 0x40, 0x20,// t
	0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C,// u
	0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C,// v
	0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C,// w
	0x00, 0x44, 0x28, 0x10, 0x28, 0x44,// x
	0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C,// y
	0x00, 0x44, 0x64, 0x54, 0x4C, 0x44,// z
	0x14, 0x14, 0x14, 0x14, 0x14, 0x14,// horiz lines
};
/****************************************8*16的点阵************************************/
const uint8_t F8X16[][16]=	  
{
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// 0
  0x00,0x00,0x00,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x33,0x30,0x00,0x00,0x00,//! 1
  0x00,0x10,0x0C,0x06,0x10,0x0C,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//" 2
  0x40,0xC0,0x78,0x40,0xC0,0x78,0x40,0x00,0x04,0x3F,0x04,0x04,0x3F,0x04,0x04,0x00,//# 3
  0x00,0x70,0x88,0xFC,0x08,0x30,0x00,0x00,0x00,0x18,0x20,0xFF,0x21,0x1E,0x00,0x00,//$ 4
  0xF0,0x08,0xF0,0x00,0xE0,0x18,0x00,0x00,0x00,0x21,0x1C,0x03,0x1E,0x21,0x1E,0x00,//% 5
  0x00,0xF0,0x08,0x88,0x70,0x00,0x00,0x00,0x1E,0x21,0x23,0x24,0x19,0x27,0x21,0x10,//& 6
  0x10,0x16,0x0E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//' 7
  0x00,0x00,0x00,0xE0,0x18,0x04,0x02,0x00,0x00,0x00,0x00,0x07,0x18,0x20,0x40,0x00,//( 8
  0x00,0x02,0x04,0x18,0xE0,0x00,0x00,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0x00,0x00,//) 9
  0x40,0x40,0x80,0xF0,0x80,0x40,0x40,0x00,0x02,0x02,0x01,0x0F,0x01,0x02,0x02,0x00,//* 10
  0x00,0x00,0x00,0xF0,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x1F,0x01,0x01,0x01,0x00,//+ 11
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xB0,0x70,0x00,0x00,0x00,0x00,0x00,//, 12
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,//- 13
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,0x00,0x00,//. 14
  0x00,0x00,0x00,0x00,0x80,0x60,0x18,0x04,0x00,0x60,0x18,0x06,0x01,0x00,0x00,0x00,/// 15
  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x10,0x0F,0x00,//0 16
  0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//1 17
  0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00,//2 18
  0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00,//3 19
  0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00,//4 20
  0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00,//5 21
  0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00,//6 22
  0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00,//7 23
  0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00,//8 24
  0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00,//9 25
  0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00,//: 26
  0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x60,0x00,0x00,0x00,0x00,//; 27
  0x00,0x00,0x80,0x40,0x20,0x10,0x08,0x00,0x00,0x01,0x02,0x04,0x08,0x10,0x20,0x00,//< 28
  0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x04,0x04,0x04,0x04,0x04,0x04,0x04,0x00,//= 29
  0x00,0x08,0x10,0x20,0x40,0x80,0x00,0x00,0x00,0x20,0x10,0x08,0x04,0x02,0x01,0x00,//> 30
  0x00,0x70,0x48,0x08,0x08,0x08,0xF0,0x00,0x00,0x00,0x00,0x30,0x36,0x01,0x00,0x00,//? 31
  0xC0,0x30,0xC8,0x28,0xE8,0x10,0xE0,0x00,0x07,0x18,0x27,0x24,0x23,0x14,0x0B,0x00,//@ 32
  0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00,0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20,//A 33
  0x08,0xF8,0x88,0x88,0x88,0x70,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x11,0x0E,0x00,//B 34
  0xC0,0x30,0x08,0x08,0x08,0x08,0x38,0x00,0x07,0x18,0x20,0x20,0x20,0x10,0x08,0x00,//C 35
  0x08,0xF8,0x08,0x08,0x08,0x10,0xE0,0x00,0x20,0x3F,0x20,0x20,0x20,0x10,0x0F,0x00,//D 36
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x20,0x23,0x20,0x18,0x00,//E 37
  0x08,0xF8,0x88,0x88,0xE8,0x08,0x10,0x00,0x20,0x3F,0x20,0x00,0x03,0x00,0x00,0x00,//F 38
  0xC0,0x30,0x08,0x08,0x08,0x38,0x00,0x00,0x07,0x18,0x20,0x20,0x22,0x1E,0x02,0x00,//G 39
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x20,0x3F,0x21,0x01,0x01,0x21,0x3F,0x20,//H 40
  0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//I 41
  0x00,0x00,0x08,0x08,0xF8,0x08,0x08,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,0x00,//J 42
  0x08,0xF8,0x88,0xC0,0x28,0x18,0x08,0x00,0x20,0x3F,0x20,0x01,0x26,0x38,0x20,0x00,//K 43
  0x08,0xF8,0x08,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x20,0x20,0x20,0x20,0x30,0x00,//L 44
  0x08,0xF8,0xF8,0x00,0xF8,0xF8,0x08,0x00,0x20,0x3F,0x00,0x3F,0x00,0x3F,0x20,0x00,//M 45
  0x08,0xF8,0x30,0xC0,0x00,0x08,0xF8,0x08,0x20,0x3F,0x20,0x00,0x07,0x18,0x3F,0x00,//N 46
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x0F,0x00,//O 47
  0x08,0xF8,0x08,0x08,0x08,0x08,0xF0,0x00,0x20,0x3F,0x21,0x01,0x01,0x01,0x00,0x00,//P 48
  0xE0,0x10,0x08,0x08,0x08,0x10,0xE0,0x00,0x0F,0x18,0x24,0x24,0x38,0x50,0x4F,0x00,//Q 49
  0x08,0xF8,0x88,0x88,0x88,0x88,0x70,0x00,0x20,0x3F,0x20,0x00,0x03,0x0C,0x30,0x20,//R 50
  0x00,0x70,0x88,0x08,0x08,0x08,0x38,0x00,0x00,0x38,0x20,0x21,0x21,0x22,0x1C,0x00,//S 51
  0x18,0x08,0x08,0xF8,0x08,0x08,0x18,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//T 52
  0x08,0xF8,0x08,0x00,0x00,0x08,0xF8,0x08,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//U 53
  0x08,0x78,0x88,0x00,0x00,0xC8,0x38,0x08,0x00,0x00,0x07,0x38,0x0E,0x01,0x00,0x00,//V 54
  0xF8,0x08,0x00,0xF8,0x00,0x08,0xF8,0x00,0x03,0x3C,0x07,0x00,0x07,0x3C,0x03,0x00,//W 55
  0x08,0x18,0x68,0x80,0x80,0x68,0x18,0x08,0x20,0x30,0x2C,0x03,0x03,0x2C,0x30,0x20,//X 56
  0x08,0x38,0xC8,0x00,0xC8,0x38,0x08,0x00,0x00,0x00,0x20,0x3F,0x20,0x00,0x00,0x00,//Y 57
  0x10,0x08,0x08,0x08,0xC8,0x38,0x08,0x00,0x20,0x38,0x26,0x21,0x20,0x20,0x18,0x00,//Z 58
  0x00,0x00,0x00,0xFE,0x02,0x02,0x02,0x00,0x00,0x00,0x00,0x7F,0x40,0x40,0x40,0x00,//[ 59
  0x00,0x0C,0x30,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x06,0x38,0xC0,0x00,//\ 60
  0x00,0x02,0x02,0x02,0xFE,0x00,0x00,0x00,0x00,0x40,0x40,0x40,0x7F,0x00,0x00,0x00,//] 61
  0x00,0x00,0x04,0x02,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//^ 62
  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,//_ 63
  0x00,0x02,0x02,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//` 64
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x19,0x24,0x22,0x22,0x22,0x3F,0x20,//a 65
  0x08,0xF8,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x3F,0x11,0x20,0x20,0x11,0x0E,0x00,//b 66
  0x00,0x00,0x00,0x80,0x80,0x80,0x00,0x00,0x00,0x0E,0x11,0x20,0x20,0x20,0x11,0x00,//c 67
  0x00,0x00,0x00,0x80,0x80,0x88,0xF8,0x00,0x00,0x0E,0x11,0x20,0x20,0x10,0x3F,0x20,//d 68
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x22,0x22,0x22,0x22,0x13,0x00,//e 69
  0x00,0x80,0x80,0xF0,0x88,0x88,0x88,0x18,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//f 70
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x6B,0x94,0x94,0x94,0x93,0x60,0x00,//g 71
  0x08,0xF8,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//h 72
  0x00,0x80,0x98,0x98,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//i 73
  0x00,0x00,0x00,0x80,0x98,0x98,0x00,0x00,0x00,0xC0,0x80,0x80,0x80,0x7F,0x00,0x00,//j 74
  0x08,0xF8,0x00,0x00,0x80,0x80,0x80,0x00,0x20,0x3F,0x24,0x02,0x2D,0x30,0x20,0x00,//k 75
  0x00,0x08,0x08,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00,//l 76
  0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x20,0x3F,0x20,0x00,0x3F,0x20,0x00,0x3F,//m 77
  0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x3F,0x21,0x00,0x00,0x20,0x3F,0x20,//n 78
  0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x1F,0x20,0x20,0x20,0x20,0x1F,0x00,//o 79
  0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x80,0xFF,0xA1,0x20,0x20,0x11,0x0E,0x00,//p 80
  0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x00,0x0E,0x11,0x20,0x20,0xA0,0xFF,0x80,//q 81
  0x80,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x20,0x20,0x3F,0x21,0x20,0x00,0x01,0x00,//r 82
  0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x33,0x24,0x24,0x24,0x24,0x19,0x00,//s 83
  0x00,0x80,0x80,0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x1F,0x20,0x20,0x00,0x00,//t 84
  0x80,0x80,0x00,0x00,0x00,0x80,0x80,0x00,0x00,0x1F,0x20,0x20,0x20,0x10,0x3F,0x20,//u 85
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x00,0x01,0x0E,0x30,0x08,0x06,0x01,0x00,//v 86
  0x80,0x80,0x00,0x80,0x00,0x80,0x80,0x80,0x0F,0x30,0x0C,0x03,0x0C,0x30,0x0F,0x00,//w 87
  0x00,0x80,0x80,0x00,0x80,0x80,0x80,0x00,0x00,0x20,0x31,0x2E,0x0E,0x31,0x20,0x00,//x 88
  0x80,0x80,0x80,0x00,0x00,0x80,0x80,0x80,0x80,0x81,0x8E,0x70,0x18,0x06,0x01,0x00,//y 89
  0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x21,0x30,0x2C,0x22,0x21,0x30,0x00,//z 90
  0x00,0x00,0x00,0x00,0x80,0x7C,0x02,0x02,0x00,0x00,0x00,0x00,0x00,0x3F,0x40,0x40,//{ 91
  0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,//| 92
  0x00,0x02,0x02,0x7C,0x80,0x00,0x00,0x00,0x00,0x40,0x40,0x3F,0x00,0x00,0x00,0x00,//} 93
  0x00,0x06,0x01,0x01,0x02,0x02,0x04,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,//~ 94
};

/************************************
	汉字字模数据结构             
	1.汉字内码索引                 
	点阵码数据 
************************************/
typedef struct {     
    char index[2];                                             
    uint8_t encoder[32];                                             
}GB2312_CN;

/* 添加中文字体，请添加为16个元素的一维数组模式 */
const GB2312_CN F16x16_CN[] = {
	{
	0x10,0x60,0x02,0x8C,0x00,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00,0x04,0x04,0x7E,0x01,0x40,0x7E,0x42,0x42,0x7E,0x42,0x7E,0x42,0x42,0x7E,0x40,0x00,/*"温"*/
	},
	{
	0x00,0x00,0xFC,0x24,0x24,0x24,0xFC,0x25,0x26,0x24,0xFC,0x24,0x24,0x24,0x04,0x00,0x40,0x30,0x8F,0x80,0x84,0x4C,0x55,0x25,0x25,0x25,0x55,0x4C,0x80,0x80,0x80,0x00,/*"度"*/
	},
	{0x00,0x00,0x24,0x24,0x24,0x24,0x24,0xFC,0x22,0x22,0x22,0x23,0x22,0x00,0x00,0x00,0x02,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00,},/*"手"*/

	{0x40,0x44,0xC4,0x44,0x44,0x44,0x40,0x10,0x10,0xFF,0x10,0x10,0x10,0xF0,0x00,0x00,0x10,0x3C,0x13,0x10,0x14,0xB8,0x40,0x30,0x0E,0x01,0x40,0x80,0x40,0x3F,0x00,0x00,},/*"动"*/

	{0x10,0x10,0xD0,0xFF,0x90,0x14,0xE4,0xAF,0xA4,0xA4,0xA4,0xAF,0xE4,0x04,0x00,0x00,0x04,0x03,0x00,0xFF,0x00,0x89,0x4B,0x2A,0x1A,0x0E,0x1A,0x2A,0x4B,0x88,0x80,0x00,},/*"模"*/

	{0x10,0x10,0x90,0x90,0x90,0x90,0x90,0x10,0x10,0xFF,0x10,0x10,0x11,0x16,0x10,0x00,0x00,0x20,0x60,0x20,0x3F,0x10,0x10,0x10,0x00,0x03,0x0C,0x10,0x20,0x40,0xF8,0x00,},/*"式"*/

	{0x10,0x94,0x53,0x32,0x1E,0x32,0x52,0x10,0x00,0x7E,0x42,0x42,0x42,0x7E,0x00,0x00,0x00,0x00,0x00,0xFF,0x49,0x49,0x49,0x49,0x49,0x49,0x49,0xFF,0x00,0x00,0x00,0x00,},/*"智"*/

	{0x08,0xCC,0x4A,0x49,0x48,0x4A,0xCC,0x18,0x00,0x7F,0x88,0x88,0x84,0x82,0xE0,0x00,0x00,0xFF,0x12,0x12,0x52,0x92,0x7F,0x00,0x00,0x7E,0x88,0x88,0x84,0x82,0xE0,0x00,},/*"能"*/

	{0x10,0x60,0x02,0x8C,0x00,0xFE,0x92,0x92,0x92,0x92,0x92,0x92,0xFE,0x00,0x00,0x00,0x04,0x04,0x7E,0x01,0x44,0x48,0x50,0x7F,0x40,0x40,0x7F,0x50,0x48,0x44,0x40,0x00,},/*"湿"*/

	{0x00,0x00,0xFC,0x24,0x24,0x24,0xFC,0x25,0x26,0x24,0xFC,0x24,0x24,0x24,0x04,0x00,0x40,0x30,0x8F,0x80,0x84,0x4C,0x55,0x25,0x25,0x25,0x55,0x4C,0x80,0x80,0x80,0x00,},/*"度"*/

	{0x00,0x20,0x20,0x20,0xA0,0x60,0x00,0xFF,0x60,0x80,0x40,0x20,0x18,0x00,0x00,0x00,0x20,0x10,0x08,0x06,0x01,0x40,0x80,0x7F,0x00,0x01,0x02,0x04,0x08,0x10,0x10,0x00,},/*"水"*/

	{0x00,0x80,0x60,0xF8,0x07,0x10,0x90,0x10,0x11,0x16,0x10,0x10,0xD0,0x10,0x00,0x00,0x01,0x00,0x00,0xFF,0x40,0x40,0x41,0x5E,0x40,0x40,0x70,0x4E,0x41,0x40,0x40,0x00,},/*"位"*/

	{0x04,0x04,0x84,0xC4,0xA4,0x9C,0x85,0x86,0x84,0x84,0xA4,0xC4,0x84,0x04,0x04,0x00,0x00,0x80,0x80,0x40,0x30,0x0F,0x00,0x00,0x00,0x7F,0x80,0x80,0x81,0xF0,0x00,0x00,},/*"充"*/

	{0x00,0x00,0x00,0x7E,0x42,0x42,0x42,0xC2,0x42,0x42,0x42,0x7E,0x00,0x00,0x00,0x00,0x80,0x40,0x30,0x0E,0x10,0x20,0x40,0x7F,0x44,0x44,0x44,0x44,0x44,0x40,0x40,0x00,},/*"足"*/

	{0x00,0x02,0x02,0x02,0x02,0x82,0x42,0xF2,0x0E,0x42,0x82,0x02,0x02,0x02,0x00,0x00,0x10,0x08,0x04,0x02,0x01,0x00,0x00,0xFF,0x00,0x00,0x00,0x01,0x02,0x0C,0x00,0x00,},/*"不"*/

	{0x00,0x00,0x00,0x7E,0x42,0x42,0x42,0xC2,0x42,0x42,0x42,0x7E,0x00,0x00,0x00,0x00,0x80,0x40,0x30,0x0E,0x10,0x20,0x40,0x7F,0x44,0x44,0x44,0x44,0x44,0x40,0x40,0x00,},/*"足"*/

	{0x10,0x10,0x10,0xFF,0x10,0x10,0xF0,0x00,0x00,0xF8,0x08,0x08,0x08,0xF8,0x00,0x00,0x80,0x40,0x30,0x0F,0x40,0x80,0x7F,0x00,0x00,0x7F,0x20,0x20,0x20,0x7F,0x00,0x00,},/*"加"*/

	{0x80,0x80,0x9E,0x92,0x92,0x92,0x9E,0xE0,0x80,0x9E,0xB2,0xD2,0x92,0x9E,0x80,0x00,0x08,0x08,0xF4,0x94,0x92,0x92,0xF1,0x00,0x01,0xF2,0x92,0x94,0x94,0xF8,0x08,0x00,},/*"器"*/

	{0x80,0x82,0x82,0x82,0xFE,0x82,0x82,0x82,0x82,0x82,0xFE,0x82,0x82,0x82,0x80,0x00,0x00,0x80,0x40,0x30,0x0F,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,},/*"开"*/

	{0x00,0x00,0x00,0xFC,0x44,0x44,0x44,0x45,0x46,0x44,0x44,0x44,0x44,0x7C,0x00,0x00,0x40,0x20,0x18,0x07,0x00,0xFC,0x44,0x44,0x44,0x44,0x44,0x44,0x44,0xFC,0x00,0x00,},/*"启"*/

	{0x00,0x00,0x10,0x11,0x16,0x10,0x10,0xF0,0x10,0x10,0x14,0x13,0x10,0x00,0x00,0x00,0x81,0x81,0x41,0x41,0x21,0x11,0x0D,0x03,0x0D,0x11,0x21,0x41,0x41,0x81,0x81,0x00,},/*"关"*/

	{0x00,0xF8,0x01,0x22,0x20,0x22,0x22,0xA2,0xFA,0x22,0x22,0x22,0x02,0xFE,0x00,0x00,0x00,0xFF,0x00,0x08,0x04,0x02,0x11,0x20,0x1F,0x00,0x00,0x40,0x80,0x7F,0x00,0x00}/*"闭"*/
};

/* 添加图片请按照高*宽的模式添加 
	BMP图片声明,图片格式为二位数组，下标分别对应图片的宽和高：
		BMP_xx[H/8][L];
*/
const uint8_t BMP_Picture[64/8][64] = {
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,
0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x40,0x30,0x1E,
0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x3C,0x40,0x60,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x60,0xC0,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x30,0x10,0x10,0x08,0x04,0x04,0x02,0xFD,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x10,0x10,0x0C,0x06,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFE,
0x00,0x30,0x10,0x10,0x10,0x10,0x10,0x08,0x08,0x04,0x07,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFB,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xC0,0x30,0x00,0x00,0x00,0x00,0x03,
0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x00,0x00,0x50,0x80,0x00,0x00,0x80,
0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x20,0x3F,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x70,0xF0,0x0F,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};



//encode

#ifdef __cplusplus
}
#endif
#endif

继电器

我采用的继电器是低电平触发

简单的代码

复制代码 
#include "stm32f1xx_hal.h"	//链接HAL库
#include "zzyy_OLED.h"
#include "DHT11.h"

void Relay_Init(void)  //继电器初始化  高电平继电器闭合
{ 
	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_RESET);
}


void Relay_Control(uint8_t state)  //state:1闭合继电器 0
{
	if(state)
	{
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_SET);
	}
	else 
	{
		HAL_GPIO_WritePin(GPIOB, GPIO_PIN_11, GPIO_PIN_RESET);
	}

}


void Relay_Alarm(void)  //湿度过低加湿器工作
{
	if(humidity < Humi_Limt)
	{
		Relay_Control(1);
	}
	else 
		Relay_Control(0);
}

#ifndef __REALY_H
#define __REALY_H





void Relay_Init(void);  //继电器初始化
void Relay_Control(uint8_t state);  //state:1闭合继电器 0


void Relay_Alarm(void);  //湿度过低加湿器工作


#endif

水位传感器

水位传感器就没什么好说的，直接整好ADC后就可以直接读取对应的ADC值了，最后对水位数值进行计算

复制代码 
#include "stm32f1xx_hal.h"	//链接HAL库
#include "adc.h"

uint16_t WaterDeep_ADCValue;  //水位传感器的AD值

uint8_t WaterDeep;

void WaterDeep_Init(void)
{
	HAL_ADC_Init(&hadc1);
	HAL_ADC_Start(&hadc1);  //开启ADC转换
	HAL_ADC_PollForConversion(&hadc1, HAL_MAX_DELAY);  //等待转换完成
}

void WaterDeep_Get_ADCData(void)
{
	WaterDeep_ADCValue = HAL_ADC_GetValue(&hadc1);
	
	WaterDeep = ((WaterDeep_ADCValue/4096.0)*100.0);
	
}

#ifndef __WATERDEEP_H
#define __WATERDEEP_H


extern uint16_t WaterDeep_ADCValue;  //水位传感器的AD值

extern uint8_t WaterDeep;  //真实水位


void WaterDeep_Init(void);
void WaterDeep_Get_ADCData(void);







#endif

有源蜂鸣器

有源的直接通电就能响

蜂鸣器的"有源"和"无源"是初学者容易混淆的概念，这里的"源"指的并非电源，而是振荡源。为了让你能快速抓住核心，我先用一个表格来汇总它们的主要区别。

特性 有源蜂鸣器 无源蜂鸣器
​核心区别​ 内部自带振荡源​ 内部无振荡源​
​驱动信号​ ​直流电压​（如恒定高电平） ​特定频率的方波​（如PWM脉冲）
​声音控制​ 音调固定，无法改变 音调可调，通过改变方波频率可发出不同音阶
​使用复杂度​ ​简单，通电即响 ​稍复杂，需单片机定时器或PWM模块产生信号
​成本​ 通常较高（因内部电路更复杂） 通常较低
​外观区分​ 内部用黑胶封闭，底部可能看不到绿色电路板；整体可能稍高（如9mm） 底部可见绿色电路板；整体可能稍矮（如8mm）

  • ​有源蜂鸣器的内部集成了一个振荡电路。当你给它加上额定电压的直流电时，这个电路会自动产生固定频率的脉冲信号，驱动蜂鸣片振动发声。所以，它的控制就像开关一样简单：给高电平就响，给低电平就停

  • ​无源蜂鸣器的内部结构相对简单，可以理解为一个"微型扬声器"。它本身不会振动，需要依赖外部的控制器（如单片机）提供一个交变的信号来驱动。这个信号通常是特定频率和占空比的方波（PWM）。改变方波的频率，就能改变它发出声音的音调

简单的封装函数

复制代码 
#include "stm32f1xx_hal.h"	//链接HAL库
#include "zzyy_OLED.h"
#include "WaterDeep.h"


#define Buzzer_Pin GPIO_PIN_1  //引脚定义
#define Buzzer_Port GPIOA 

uint8_t Buzzer_cycle_Flag;

void Buzzer_Init(void)
{
	HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_SET);
}


void Buzzer_Control(uint8_t state) //蜂鸣器开关函数 1开0关
{
	if(state)
	{
		HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_RESET);
	}
	else 
	{
		HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_SET);
	}
}


void Buzzer_cycle(uint8_t state)  //state:状态 1开启蜂鸣器周期性鸣叫 0关
{
	if(state)
	{
		if(Buzzer_cycle_Flag)
		{
			HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_RESET);
		}
		else 
		{
			HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_SET);
		}
	}
	else 
	{
		HAL_GPIO_WritePin(Buzzer_Port, Buzzer_Pin, GPIO_PIN_SET);
	}
}

void Buzzer_Alarm(void)  //水位过低蜂鸣器报警
{
	if(WaterDeep < Water_Deep_Limt)
	{
		Buzzer_cycle(1);
	}
	else 
	{
		Buzzer_cycle(0);
	}
}

#ifndef __BUZZER_h
#define __BUZZER_h



extern uint8_t Buzzer_cycle_Flag;


void Buzzer_Init(void);

void Buzzer_Control(uint8_t state); //蜂鸣器开关函数 1开0关


void Buzzer_cycle(uint8_t state);  //state:状态 1开启蜂鸣器周期性鸣叫 0关

void Buzzer_Alarm(void);  //水位过低蜂鸣器报警


#endif

DHT11温湿度

注意点：

特性分类 具体参数 / 描述
​核心功能​ 同时测量环境温度 和湿度​
​输出信号​ ​单总线数字信号，只需一根数据线
​测量范围​ 湿度：20% ~ 90% RH；温度：0℃ ~ 50℃
​测量精度​ 湿度：±5% RH；温度：±2℃
​工作电压​ 3.3V ~ 5.5V，与多数单片机兼容
​核心优势​ 成本低、接口简单、功耗低（平均电流约0.5mA）

为了能稳定可靠地使用DHT11，有几个关键点需要留意：

  • ​通信间隔 ​：连续两次读取数据之间的时间间隔建议不小于2秒，否则可能导致读数不稳定或出错

  • 一上电要延时2秒度过不稳当时期

  • ​时序要求​：DHT11 对通信时序要求比较严格，在编写驱动程序时需要确保微秒级的延时准确

  • ​接线确认​：务必正确连接电源（VCC）、地（GND）和数据线（DATA），接反电源线可能会损坏传感器

  • ​上拉电阻 ​：单总线通常需要在数据线上连接一个4.7kΩ或5.1kΩ的上拉电阻到VCC，以确保总线在空闲时保持高电平。有些DHT11模块已经内置了这个电阻

    #include "stm32f1xx_hal.h" //链接HAL库
    #include "tim.h"

    void delay_us(uint16_t nus)
    {
    __HAL_TIM_SET_COUNTER(&htim1, 0);
    __HAL_TIM_ENABLE(&htim1);
    while (__HAL_TIM_GET_COUNTER(&htim1) < nus)
    {
    }
    __HAL_TIM_DISABLE(&htim1);
    }

    void DHT11_OUT(void )//输出引脚
    {
    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.Pin = GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    }
    void DHT11_IN(void )//输入引脚
    {
    GPIO_InitTypeDef GPIO_InitStruct;
    GPIO_InitStruct.Pin = GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT ;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
    }

    void DHT11_REST(void ) //主机发出起始信号
    {
    DHT11_OUT();
    HAL_GPIO_WritePin (GPIOC ,GPIO_PIN_15 ,GPIO_PIN_RESET );
    HAL_Delay (20);
    HAL_GPIO_WritePin (GPIOC ,GPIO_PIN_15 ,GPIO_PIN_SET );
    delay_us (30);
    }

    //gpio端口为输入模式时,配置为上拉输入或者浮空输入,因外接上拉电阻,默认为高电平
    //当有负信号输入时,gpio端口为1.
    //若有负信号输入，当信号引脚连接到GND或者其他低电平信号时，GPIO端口会检测到低电平并显示为0。
    //这是因为负信号的优先级高于上拉电阻的电平设置。

    uint8_t DHT11_Check(void)
    {
    uint8_t retry = 0;

    复制代码 
      // 1. 发送起始信号
  DHT11_OUT();  // 设置为输出模式
  HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_RESET);
  HAL_Delay(20);
  HAL_GPIO_WritePin(GPIOC, GPIO_PIN_15, GPIO_PIN_SET);
  delay_us(30);
  
  DHT11_IN();  // 设置数据引脚为输入模式

  while (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_15) == 1 && retry < 80)
  {
      retry++;
      delay_us(1);  // 延迟1微秒
  }

  if (retry >= 80)
      return 1;  // 如果在规定时间内引脚仍为高电平，表示传感器未响应，返回错误代码 1
  else
      retry = 0;

  while (HAL_GPIO_ReadPin(GPIOC, GPIO_PIN_15) == 0 && retry < 80)
  {
      retry++;
      delay_us(1);  // 延迟1微秒
  }

  if (retry >= 80)
      return 1;  // 如果在规定时间内引脚仍为低电平，表示传感器未响应，返回错误代码 1

  return 0;  // 传感器响应正常，返回成功代码 0

    }
    //读取一个位,参考高低电平的时序
    uint8_t DHT11_Read_Bit(void)
    {
    uint8_t retry=0;
    while((HAL_GPIO_ReadPin (GPIOC ,GPIO_PIN_15)==1) && (retry <100))
    {
    retry ++;
    delay_us (1);
    }
    retry=0;
    while((HAL_GPIO_ReadPin(GPIOC ,GPIO_PIN_15)==0) && (retry <100))
    {
    retry ++;
    delay_us (1);
    }
    delay_us (40);
    if(HAL_GPIO_ReadPin (GPIOC ,GPIO_PIN_15 )==1)
    return 1;// 返回读取到的位为高电平
    else
    return 0;// 返回读取到的位为低电平
    }

    //读取一个字节,接收数据
    uint8_t DHT11_Read_Byte(void)
    {
    uint8_t dat=0;
    for(uint8_t i=0;i<8;i++)
    {
    dat <<= 1;
    dat |= DHT11_Read_Bit();
    }
    return dat;

    }
    //更据上面的数据格式,解码数据
    uint8_t DHT11_Read_Data(uint8_t* humi, uint8_t* temp)
    {
    uint8_t buf[5]; // 存储读取到的5个字节数据的缓冲区

    复制代码 
      DHT11_REST();  // 初始化传感器通信

  if (DHT11_Check() == 0)  // 检查传感器是否正常响应
  {
      for (uint8_t i = 0; i < 5; i++)
          buf[i] = DHT11_Read_Byte();  // 逐个字节读取传感器发送的数据

      if ((buf[0] + buf[1] + buf[2] + buf[3]) == buf[4])  // 校验数据的准确性
      {
          *humi = buf[0];  // 将湿度值存储到指定的变量中
          *temp = buf[2];  // 将温度值存储到指定的变量中
      }
  }
  else
  {
      return 1;  // 传感器响应异常，返回错误代码
  }

  return 0;  // 读取数据成功，返回正常代码

    }

    #ifndef __DHT11_h
    #define __DHT11_h

    #include "main.h"

    void DHT11_REST(void); //复位DHT11
    uint8_t DHT11_Check(void); //DHT11状态反馈
    uint8_t DHT11_Read_Bit(void); //读DHT11一位数据
    uint8_t DHT11_Read_Byte(void); //读DHT11一字节数据
    uint8_t DHT11_Read_Data(uint8_t* humi,uint8_t* temp); //DHT11数据显示

    #endif /__dht11_h/

功能图

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