STM32 软件IIC OLED温湿度显示

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目录


用的板子是STM32最小系统板STM32F103C8T6
原理之前再硬件IIC那篇文章中写过，就不写了，直接附上代码了

oled.c

#include "stm32f10x.h"
#include "oled.h"
#include "oledfont.h"
#include "delay.h"
//static void delay_u(unsigned char num)
//
//     uint8_t i=10;
//	  while(num--)
//		
//		
//		 while(i--);
//		
//		



//

//static void delay_ms(unsigned int ms)
//
//    unsigned int x,y;
//	 for(x = ms; x > 0 ; x--)
//	
//	     for(y = 12000;y>0;y--);
//	
//	


//


static void OLED_GPIO_Init(void)

	GPIO_InitTypeDef GPIO_InitStructure;	//¶¨ÒåÒ»¸öGPIO_InitTypeDefÀàÐ͵ĽṹÌå
	
	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE);	//´ò¿ªGPIOCµÄÍâÉèʱÖÓ
	
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;	//Ñ¡Ôñ¿ØÖƵÄÒý½Å
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;	//ÉèÖÃΪͨÓÿªÂ©Êä³ö
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;	//ÉèÖÃÊä³öËÙÂÊΪ50MHz
	GPIO_Init(GPIOB,&GPIO_InitStructure);	//µ÷Óÿ⺯Êý³õʼ»¯GPIOA
	
	OLED_SCLK_Set();	//ÉèPC2£¨SCL£©Îª¸ßµçƽ
	OLED_SDIN_Set();	//ÉèPC3£¨SDA£©Îª¸ßµçƽ



static void OLED_IIC_Start(void)


	OLED_SCLK_Set();	//ʱÖÓÏßÖøß
	OLED_SDIN_Set();	//ÐźÅÏßÖøß
	   delay_us(1);
	OLED_SDIN_CLr();	//ÐźÅÏßÖõÍ
	   delay_us(1);
	OLED_SCLK_CLr();	//ʱÖÓÏßÖõÍ
	   delay_us(1);


static void OLED_IIC_Stop(void)

	OLED_SDIN_CLr();	//ÐźÅÏßÖõÍ
	   delay_us(1);
	OLED_SCLK_Set();	//ʱÖÓÏßÖøß
	   delay_us(1);
	OLED_SDIN_Set();	//ÐźÅÏßÖøß
	   delay_us(1);



static unsigned char IIC_Wait_Ack(void)

	unsigned char ack;

	OLED_SCLK_CLr();	//ʱÖÓÏßÖõÍ
	 delay_us(1);
	OLED_SDIN_Set();	//ÐźÅÏßÖøß
	 delay_us(1);
	OLED_SCLK_Set();	//ʱÖÓÏßÖøß
	 delay_us(1);

	if(OLED_READ_SDIN())	//¶ÁÈ¡SDAµÄµçƽ
		ack = IIC_NO_ACK;	//Èç¹ûΪ1£¬Ôò´Ó»úûÓÐÓ¦´ð
	else
		ack = IIC_ACK;		//Èç¹ûΪ0£¬Ôò´Ó»úÓ¦´ð

	OLED_SCLK_CLr();//ʱÖÓÏßÖõÍ
	 delay_us(1);

	return ack;	//·µ»Ø¶ÁÈ¡µ½µÄÓ¦´ðÐÅÏ¢



static void Write_IIC_Byte(unsigned char IIC_Byte)

	unsigned char i;  //¶¨Òå±äÁ¿
	for(i=0;i<8;i++) //forÑ­»·8´Î
	
		OLED_SCLK_CLr();	//ʱÖÓÏßÖõͣ¬Îª´«ÊäÊý¾Ý×ö×¼±¸
		 delay_us(1);

		if(IIC_Byte & 0x80)	//¶ÁÈ¡×î¸ßλ
		  	OLED_SDIN_Set();//×î¸ßλΪ1
		else
			OLED_SDIN_CLr();	//×î¸ßλΪ0

		IIC_Byte <<= 1;  //Êý¾Ý×óÒÆ1λ
		 delay_us(1);
		OLED_SCLK_Set(); //ʱÖÓÏßÖøߣ¬²úÉúÉÏÉýÑØ£¬°ÑÊý¾Ý·¢ËͳöÈ¥
		 delay_us(1);
	
	OLED_SCLK_CLr();	//ʱÖÓÏßÖõÍ
		 delay_us(1);

	while(IIC_Wait_Ack());	//´Ó»úÓ¦´ð




static void Write_IIC_Command(unsigned char IIC_Command)

   OLED_IIC_Start();
   Write_IIC_Byte(0x78);//дÈë´Ó»úµØÖ·£¬SD0 = 0
   Write_IIC_Byte(0x00);//дÈëÃüÁî
   Write_IIC_Byte(IIC_Command);//Êý¾Ý
   OLED_IIC_Stop();  //·¢ËÍÍ£Ö¹ÐźÅ



/*
	@brief			IICдÈëÊý¾Ý
	@param			IIC_Data£ºÊý¾Ý
	@retval			ÎÞ
 */
static void Write_IIC_Data(unsigned char IIC_Data)

   OLED_IIC_Start();
   Write_IIC_Byte(0x78);	//дÈë´Ó»úµØÖ·£¬SD0 = 0
   Write_IIC_Byte(0x40);	//дÈëÊý¾Ý
   Write_IIC_Byte(IIC_Data);//Êý¾Ý
   OLED_IIC_Stop();		//·¢ËÍÍ£Ö¹ÐźÅ


//¶ÔOLEDдÈëÒ»¸ö×Ö½Ú

void OLED_WR_Byte(unsigned char dat,unsigned char cmd)

	if(cmd) 
	  
       Write_IIC_Data(dat); //дÈëÊý¾Ý
	  
	else 
       Write_IIC_Command(dat); //дÈëÃüÁî
	



//ÉèÖÃÊý¾ÝдÈëµÄÆðʼÐУ¬ÁÐ
//x: ÁеÄÆðʼµÍµØÖ·ÓÚÆðʼ¸ßµØÖ·
//y: Ò³ ÆðʼҳµÄµØÖ· 0-7

void OLED_Set_Pos(unsigned char x, unsigned char y) 
 
	OLED_WR_Byte(0xb0+y,OLED_CMD);//дÈëÒ³µØÖ·
	OLED_WR_Byte((x&0x0f),OLED_CMD);  //дÈëÁеĵØÖ·  µÍ°ë×Ö½Ú
	OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);//дÈëÁеĵØÖ· ¸ß°ë×Ö½Ú
   	     	  


/*
	@brief			¿ªÏÔʾ
	@param			ÎÞ
	@retval			ÎÞ
 */ 
void OLED_Display_On(void)

	OLED_WR_Byte(0X8D,OLED_CMD);  //ÉèÖÃOLEDµçºÉ±Ã
	OLED_WR_Byte(0X14,OLED_CMD);  //ʹÄÜ£¬¿ª
	OLED_WR_Byte(0XAF,OLED_CMD);  //¿ªÏÔʾ



/*
	@brief			¹ØÏÔʾ
	@param			ÎÞ
	@retval			ÎÞ
 */  
void OLED_Display_Off(void)

	OLED_WR_Byte(0XAE,OLED_CMD);  //¹ØÏÔʾ
	OLED_WR_Byte(0X8D,OLED_CMD);  //ÉèÖÃOLEDµçºÉ±Ã
	OLED_WR_Byte(0X10,OLED_CMD);  //ʧÄÜ£¬¹Ø
		   			 

//ÇåÆÁÄ»
void OLED_Clear(void)  
  
	unsigned char i,n;		    //¶¨Òå±äÁ¿
	for(i=0;i<8;i++)  
	  
		OLED_WR_Byte (0xb0+i,OLED_CMD);    //´Ó0~7Ò³ÒÀ´ÎдÈë
		OLED_WR_Byte (0x00,OLED_CMD);      //Áе͵ØÖ·
		OLED_WR_Byte (0x10,OLED_CMD);      //ÁиߵØÖ·  
		for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); //дÈë 0 ÇåÆÁ
	

void OLED_ShouChar(unsigned char x,unsigned char y,unsigned char chr)


    unsigned char c = 0,i=0;
    c =chr - ' '; //»ñÈ¡×Ö·ûµÄÆ«ÒÆÁ¿
	 if(x>Max_Column)
	 
	   x = 0;  //Èç¹ûÁгöÁË·¶Î§£¬¾Í´ÓÏÂÁ½Ò³µÄµÚ0ÁпªÊ¼
		 y=y+2;
	  
	 
   if(SIZE == 16)   //×Ö·û´óСÈç¹ûΪ16 =8 *16
	 
	   OLED_Set_Pos(x,y); //´Óx,y¿ªÊ¼»­µã
		 for(i=0;i<8;i++)
	  OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);//ÕÒ³ö×Ö·ûcµÄÊý×éλÊý£¬ÏȰѵÚÒ»Áл­Íê
	 	 OLED_Set_Pos(x,y+1); //´Óx,y¿ªÊ¼»­µã
		 for(i=0;i<8;i++)
	  OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);//ÕÒ³ö×Ö·ûcµÄÊý×éλÊý£¬ÏȰѵÚÒ»Áл­Íê

	 
	 
	 else // 6 =6*8
	 
	    	   OLED_Set_Pos(x,y); //´Óx,y¿ªÊ¼»­µã

	 		    for(i=0;i<6;i++)
	       OLED_WR_Byte(F6x8[c][i],OLED_DATA);//ÕÒ³ö×Ö·ûcµÄÊý×éλÊý£¬ÏȰѵÚÒ»Áл­Íê

	 
	 
	 


void OLED_Init(void)

	OLED_GPIO_Init();	//GPIO¿Ú³õʼ»¯
 
	delay_ms(200);	//ÑÓ³Ù£¬ÓÉÓÚµ¥Æ¬»úÉϵç³õʼ»¯±ÈOLED¿ì£¬ËùÒÔ±ØÐë¼ÓÉÏÑÓ³Ù£¬µÈ´ýOLEDÉϸ´Î»Íê³É

	OLED_WR_Byte(0xAE,OLED_CMD);	//¹Ø±ÕÏÔʾ

	OLED_WR_Byte(0x00,OLED_CMD);	//ÉèÖõÍÁеØÖ·
	OLED_WR_Byte(0x10,OLED_CMD);	//ÉèÖøßÁеØÖ·
	OLED_WR_Byte(0x40,OLED_CMD);	//ÉèÖÃÆðʼÐеØÖ·
	OLED_WR_Byte(0xB0,OLED_CMD);	//ÉèÖÃÒ³µØÖ·

	OLED_WR_Byte(0x81,OLED_CMD); 	// ¶Ô±È¶ÈÉèÖ㬿ÉÉèÖÃÁÁ¶È
	OLED_WR_Byte(0xFF,OLED_CMD);	//  265  

	OLED_WR_Byte(0xA1,OLED_CMD);	//ÉèÖöΣ¨SEG£©µÄÆðʼӳÉäµØÖ·£»columnµÄ127µØÖ·ÊÇSEG0µÄµØÖ·
	OLED_WR_Byte(0xA6,OLED_CMD);	//Õý³£ÏÔʾ£»0xa7ÄæÏÔʾ

	OLED_WR_Byte(0xA8,OLED_CMD);	//ÉèÖÃÇý¶¯Â·Êý£¨16~64£©
	OLED_WR_Byte(0x3F,OLED_CMD);	//64duty
	
	OLED_WR_Byte(0xC8,OLED_CMD);	//ÖØÓ³Éäģʽ£¬COM[N-1]~COM0ɨÃè

	OLED_WR_Byte(0xD3,OLED_CMD);	//ÉèÖÃÏÔʾƫÒÆ
	OLED_WR_Byte(0x00,OLED_CMD);	//ÎÞÆ«ÒÆ
	
	OLED_WR_Byte(0xD5,OLED_CMD);	//ÉèÖÃÕðµ´Æ÷·ÖƵ
	OLED_WR_Byte(0x80,OLED_CMD);	//ʹÓÃĬÈÏÖµ
	
	OLED_WR_Byte(0xD9,OLED_CMD);	//ÉèÖÃ Pre-Charge Period
	OLED_WR_Byte(0xF1,OLED_CMD);	//ʹÓùٷ½ÍƼöÖµ
	
	OLED_WR_Byte(0xDA,OLED_CMD);	//ÉèÖÃ com pin configuartion
	OLED_WR_Byte(0x12,OLED_CMD);	//ʹÓÃĬÈÏÖµ
	
	OLED_WR_Byte(0xDB,OLED_CMD);	//ÉèÖà Vcomh£¬¿Éµ÷½ÚÁÁ¶È£¨Ä¬ÈÏ£©
	OLED_WR_Byte(0x40,OLED_CMD);	ʹÓùٷ½ÍƼöÖµ
	
	OLED_WR_Byte(0x8D,OLED_CMD);	//ÉèÖÃOLEDµçºÉ±Ã
	OLED_WR_Byte(0x14,OLED_CMD);	//¿ªÏÔʾ
	
	OLED_WR_Byte(0xAF,OLED_CMD);	//¿ªÆôOLEDÃæ°åÏÔʾ
	OLED_Clear();        //ÇåÆÁ
	OLED_Set_Pos(0,0); 	 //ÉèÖÃÊý¾ÝдÈëµÄÆðʼÐС¢ÁÐ
  

//ÏÔʾ×Ö·û´®
void OLED_ShowString(unsigned char x, unsigned char y,unsigned char *chr)

   unsigned char j=0;
	 while(chr[j] != '\\0') //ÅжÏÊDz»ÊÇ×îºóÒ»¸ö×Ö·û
	 
	    
    OLED_ShouChar(x,y,chr[j]);//ÏÔʾ×Ö·û
		 x+=8;  //ÁÐÊý+8£¬Ò»¸ö×Ö·ûÕ¼ 8
		 if(x>=128)
		 
		     x= 0 ;
			   y +=2;
		    
		 
		 j++;
	 




//¼ÆËãm^n´Î·½£¬result Ò»¸öÊýµÄn´Î·½
unsigned int oled_pow(unsigned char m,unsigned char n)

	unsigned int result=1;	 
	while(n--)result*=m;    
	return result;
			
void OLED_ShowNum(unsigned char x,unsigned char y,unsigned int num,unsigned char len,unsigned char size)
         	
	unsigned char t,temp;  //¶¨Òå±äÁ¿
	unsigned char enshow=0;		//¶¨Òå±äÁ¿

	for(t=0;t<len;t++)
	
		temp=(num/oled_pow(10,len-t-1))%10;//È¡³öÊäÈëÊýµÄÿ¸ö룬Óɸߵ½µÍ
		if(enshow==0&&t<(len-1)) //enshow£ºÊÇ·ñΪµÚÒ»¸öÊý£»t<(len-1)£ºÅжÏÊÇ·ñΪ×îºóÒ»¸öÊý
		
			if(temp==0) //Èç¹û¸ÃÊýΪ0 
			
				OLED_ShouChar(x+(size/2)*t,y,' ');//ÏÔʾ 0 £»x+(size2/2)*t¸ù¾Ý×ÖÌå´óСƫÒƵÄÁÐÊý£¨8£©
				continue; //Ìø¹ýÊ£ÏÂÓï¾ä£¬¼ÌÐøÖظ´Ñ­»·£¨±ÜÃâÖظ´ÏÔʾ£©
			else enshow=1; 
		
	 	OLED_ShouChar(x+(size/2)*t,y,temp+'0'); //ÏÔʾһ¸öλ£»x+(size2/2)*t¸ù¾Ý×ÖÌå´óСƫÒƵÄÁÐÊý£¨8£©
	
 

void OLED_ShowCHinese(unsigned char x,unsigned char y,unsigned char no)

    unsigned char t,adder = 0;
	  OLED_Set_Pos(x,y);
	for(t=0;t<16;t++)
	 
		 OLED_WR_Byte( Hzk[2*no][t],OLED_DATA);//»­ noÔÚÊý×éλÖõĵÚÒ»Ò³16Áеĵã
		 adder+=1; //Êý×éµØÖ·+1
	
		  OLED_Set_Pos(x,y+1);
	for(t=0;t<16;t++)
	
     OLED_WR_Byte( Hzk[2*no+1][t],OLED_DATA);//»­ noÔÚÊý×éλÖõĵÚ2Ò³16Áеĵã
		 adder+=1; //Êý×éµØÖ·+1

oled.h

#ifndef _OLED_H_
#define _OLED_H_

#include "stm32f10x.h"

#define  OLED_SCLK_Set()    GPIO_SetBits(GPIOB,GPIO_Pin_0)  //PB0(SCL)Êä³ö¸ß
#define  OLED_SCLK_CLr()    GPIO_ResetBits(GPIOB,GPIO_Pin_0) //PB0(SCL)Êä³öµÍ
#define  OLED_SDIN_Set()    GPIO_SetBits(GPIOB,GPIO_Pin_1)  //PB1(SDA)Êä³ö¸ß
#define  OLED_SDIN_CLr()    GPIO_ResetBits(GPIOB,GPIO_Pin_1) //PB1(SDA)Êä³öµÍ
#define  OLED_READ_SDIN()    GPIO_ReadInputDataBit(GPIOB,  GPIO_Pin_1) //¶ÁÈ¡PB1(SDA)µçƽ

   
#define IIC_ACK  0  //Ó¦´ð
#define IIC_NO_ACK  1  //²»Ó¦´ð
#define  OLED_CMD 0 //дÃüÁî
#define  OLED_DATA  1 //дÊý¾Ý
#define SIZE 		16		//ÏÔʾ×Ö·ûµÄ´óС
#define Max_Column	128		//×î´óÁÐÊý			  				  

//static void delay_u(unsigned char num);
//static void delay_ms(unsigned int ms);
static void OLED_IIC_Start(void);
static void OLED_IIC_Stop(void);
static unsigned char IIC_Wait_Ack(void);
static void Write_IIC_Byte(unsigned char IIC_Byte);
static void Write_IIC_Command(unsigned char IIC_Command);
static void Write_IIC_Data(unsigned char IIC_Data);
void OLED_WR_Byte(unsigned char dat,unsigned char cmd);
void OLED_Set_Pos(unsigned char x,unsigned char y);
void OLED_Display_On(void);
void OLED_Display_Off(void);
void OLED_Clear(void);
void OLED_ShouChar(unsigned char x,unsigned char y,unsigned char chr);
void OLED_Init(void);
void OLED_ShowString(unsigned char x, unsigned char y,unsigned char *chr);
void OLED_ShowNum(unsigned char x,unsigned char y,unsigned int num,unsigned char len ,unsigned char size);
void OLED_ShowCHinese(unsigned char x,unsigned char y,unsigned char no);

#endif

delay.c

#include "delay.h"
#include "stm32f10x.h"

void initSysTick(void)

    SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8); //ÉèÖÃʱÖÓÔ´8·ÖƵ
    SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;            STM32 硬件IIC OLED


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