STM32驱动0.96寸OLED液晶屏

只看该作者 · 2023-8-25 16:16

例如如果页地址设为B2h，低列地址为03h，而高列地址为00h，那么也就意味着开始列是PAGE2的SEG3，而RAM的获取指针定位到下图中。而输入的数据将会被写入列3的位置。

只看该作者 · 2023-8-25 16:16

所以确定好了显示位置，直接输出字符对应的像素数据数组就好了。

只看该作者 · 2023-8-25 16:16

4.字幕显示原理
字幕显示原理我们用的OLED液晶屏是由12864个发光点阵组成，即分辨率是12864。 ASCII码可以68、88、816像素，汉字一般显示像素为1616。一般为了显示效果理想，英文和数字常选用8*16像素显示。

只看该作者 · 2023-8-25 16:17

二、上下或左右的滑动显示长字符
1.水平左右移动

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OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动

OLED_WR_Byte(0x26,OLED_CMD);        //水平向左或者右滚动 26/27

OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0

OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔

OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7

OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动

只看该作者 · 2023-8-25 16:17

2.垂直水平滚动

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OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动

OLED_WR_Byte(0x26,OLED_CMD);        //水平向左或者右滚动 26/27

OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0

OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔

OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7

OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节

OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动

只看该作者 · 2023-8-25 16:17

3.汉字取模

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  0x01,0x00,0x01,0x00,0x7F,0xFC,0x01,0x00,0x3F,0xF8,0x02,0x00,0xFF,0xFE,0x08,0x20,

  0x10,0x10,0x2F,0xE8,0xC8,0x26,0x08,0x20,0x0F,0xE0,0x08,0x20,0x08,0x20,0x0F,0xE0,/*"春",0*/

  0x00,0x00,0x3F,0xF0,0x20,0x10,0x20,0x10,0x28,0x50,0x24,0x50,0x22,0x90,0x22,0x90,

  0x21,0x10,0x21,0x10,0x22,0x90,0x22,0x92,0x24,0x4A,0x48,0x4A,0x40,0x06,0x80,0x02,/*"风",1*/

  0x10,0x90,0x10,0x90,0x10,0x90,0x12,0x92,0xFD,0x94,0x10,0x98,0x30,0x90,0x39,0x98,

  0x56,0x94,0x54,0x92,0x90,0x90,0x10,0x90,0x11,0x12,0x11,0x12,0x12,0x12,0x14,0x0E,/*"桃",2*/

  0x01,0x00,0x01,0x00,0x7F,0xFC,0x03,0x80,0x05,0x40,0x09,0x20,0x31,0x18,0xC1,0x06,

  0x0F,0xE0,0x00,0x40,0x00,0x80,0xFF,0xFE,0x01,0x00,0x01,0x00,0x05,0x00,0x02,0x00,/*"李",3*/

  0x08,0x20,0x08,0x20,0xFF,0xFE,0x08,0x20,0x00,0x00,0x08,0x88,0x08,0x90,0x10,0xA0,

  0x30,0xC0,0x50,0x80,0x91,0x80,0x12,0x82,0x14,0x82,0x10,0x82,0x10,0x7E,0x10,0x00,/*"花",4*/

  0x00,0x00,0x7F,0xFC,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0xFF,0xFE,

  0x08,0x20,0x08,0x20,0x08,0x20,0x08,0x20,0x10,0x20,0x10,0x20,0x20,0x20,0x40,0x20,/*"开",5*/

  0x02,0x00,0x01,0x00,0xFF,0xFE,0x08,0x80,0x08,0x80,0x10,0xF8,0x11,0x08,0x31,0x48,

  0x52,0x28,0x95,0x10,0x11,0x10,0x10,0xA0,0x10,0x40,0x10,0xA0,0x11,0x18,0x16,0x06,/*"夜",6*/

只看该作者 · 2023-8-25 16:17

4.main函数

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#include "delay.h"

#include "sys.h"

#include "oled.h"

#include "gui.h"

#include "test.h"

int main(void)

{        

        delay_init();                           //延时函数初始化          

        NVIC_Configuration();            //设置NVIC中断分组2:2位抢占优先级，2位响应优先级         

        OLED_Init();                                 //初始化OLED  

        OLED_Clear(0);             //清屏（全黑）

        OLED_WR_Byte(0x2E,OLED_CMD);        //关闭滚动

    OLED_WR_Byte(0x27,OLED_CMD);        //水平向左或者右滚动 26/27

    OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

        OLED_WR_Byte(0x00,OLED_CMD);        //起始页 0

        OLED_WR_Byte(0x07,OLED_CMD);        //滚动时间间隔

        OLED_WR_Byte(0x07,OLED_CMD);        //终止页 7

        OLED_WR_Byte(0x00,OLED_CMD);        //虚拟字节

        OLED_WR_Byte(0xFF,OLED_CMD);        //虚拟字节

        TEST_MainPage();

        OLED_WR_Byte(0x2F,OLED_CMD);        //开启滚动

}

只看该作者 · 2023-8-25 16:17

5.显示数据

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void TEST_MainPage(void)

{        

        //GUI_ShowString(28,0,"Harriet",16,1);

        GUI_ShowCHinese(10,20,16,"春风桃李花开夜",1);

        //GUI_ShowString(40,32,"64X128",16,1);

        delay_ms(1500);                

        delay_ms(1500);

}

只看该作者 · 2023-8-25 16:18

6.运行结果

只看该作者 · 2023-8-25 16:18

三、显示AHT20的温度和湿度
1.显示温湿度代码

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void read_AHT20(void)

{

uint8_t   i;

for(i=0; i<6; i++)

{

readByte[i]=0;

}



//-------------

I2C_Start();

I2C_WriteByte(0x71);

ack_status = Receive_ACK();

readByte[0]= I2C_ReadByte();

Send_ACK();

readByte[1]= I2C_ReadByte();

Send_ACK();



readByte[2]= I2C_ReadByte();

Send_ACK();



readByte[3]= I2C_ReadByte();

Send_ACK();



readByte[4]= I2C_ReadByte();

Send_ACK();

readByte[5]= I2C_ReadByte();

SendNot_Ack();

//Send_ACK();



I2C_Stop();



//--------------

if( (readByte[0] & 0x68) == 0x08 )

{

H1 = readByte[1];

H1 = (H1<<8) | readByte[2];

H1 = (H1<<8) | readByte[3];

H1 = H1>>4;



H1 = (H1*1000)/1024/1024;



T1 = readByte[3];

T1 = T1 & 0x0000000F;

T1 = (T1<<8) | readByte[4];

T1 = (T1<<8) | readByte[5];



T1 = (T1*2000)/1024/1024 - 500;



AHT20_OutData[0] = (H1>>8) & 0x000000FF;

AHT20_OutData[1] = H1 & 0x000000FF;



AHT20_OutData[2] = (T1>>8) & 0x000000FF;

AHT20_OutData[3] = T1 & 0x000000FF;

}

else

{

AHT20_OutData[0] = 0xFF;

AHT20_OutData[1] = 0xFF;



AHT20_OutData[2] = 0xFF;

AHT20_OutData[3] = 0xFF;

printf("lyy");



}

/*通过串口显示采集得到的温湿度

printf("\r\n");

printf("温度:%d%d.%d",T1/100,(T1/10)%10,T1%10);

printf("湿度:%d%d.%d",H1/100,(H1/10)%10,H1%10);

printf("\r\n");*/

t=T1/10;

t1=T1%10;

a=(float)(t+t1*0.1);

h=H1/10;

h1=H1%10;

b=(float)(h+h1*0.1);

sprintf(strTemp,"%.1f",a);   //调用Sprintf函数把DHT11的温度数据格式化到字符串数组变量strTemp中  

    sprintf(strHumi,"%.1f",b);    //调用Sprintf函数把DHT11的湿度数据格式化到字符串数组变量strHumi中  

GUI_ShowCHinese(16,00,16,"温湿度显示",1);

GUI_ShowCHinese(16,20,16,"温度",1);

GUI_ShowString(53,20,strTemp,16,1);

GUI_ShowCHinese(16,38,16,"湿度",1);

GUI_ShowString(53,38,strHumi,16,1);

delay_ms(1500); 

delay_ms(1500);

}

只看该作者 · 2023-8-25 16:19

2.添加点阵字

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"温",0x00,0x00,0x23,0xF8,0x12,0x08,0x12,0x08,0x83,0xF8,0x42,0x08,0x42,0x08,0x13,0xF8,

  0x10,0x00,0x27,0xFC,0xE4,0xA4,0x24,0xA4,0x24,0xA4,0x24,0xA4,0x2F,0xFE,0x00,0x00,/*"温",0*/

        "度",0x01,0x00,0x00,0x80,0x3F,0xFE,0x22,0x20,0x22,0x20,0x3F,0xFC,0x22,0x20,0x22,0x20,

  0x23,0xE0,0x20,0x00,0x2F,0xF0,0x24,0x10,0x42,0x20,0x41,0xC0,0x86,0x30,0x38,0x0E,/*"度",0*/

        "湿",0x00,0x00,0x27,0xF8,0x14,0x08,0x14,0x08,0x87,0xF8,0x44,0x08,0x44,0x08,0x17,0xF8,

  0x11,0x20,0x21,0x20,0xE9,0x24,0x25,0x28,0x23,0x30,0x21,0x20,0x2F,0xFE,0x00,0x00,/*"湿",0*/

        "显",0x00,0x00,0x1F,0xF0,0x10,0x10,0x10,0x10,0x1F,0xF0,0x10,0x10,0x10,0x10,0x1F,0xF0,

  0x04,0x40,0x44,0x44,0x24,0x44,0x14,0x48,0x14,0x50,0x04,0x40,0xFF,0xFE,0x00,0x00,/*"显",0*/

        "示",0x00,0x00,0x3F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0xFE,0x01,0x00,

  0x01,0x00,0x11,0x10,0x11,0x08,0x21,0x04,0x41,0x02,0x81,0x02,0x05,0x00,0x02,0x00,/*"示",0*/

只看该作者 · 2023-8-25 16:19

3.main函数

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#include "delay.h"

#include "usart.h"

#include "bsp_i2c.h"

#include "sys.h"



#include "oled.h"

#include "gui.h"

#include "test.h"



int main(void)

{        

        delay_init();                           //延时函数初始化              

        uart_init(115200);         

        IIC_Init();

                  

        NVIC_Configuration();            //设置NVIC中断分组2:2位抢占优先级，2位响应优先级         

        OLED_Init();                                 //初始化OLED  

        OLED_Clear(0); 

        while(1)

        {

                //printf("温度湿度显示");

                read_AHT20_once();

                OLED_Clear(0); 

                delay_ms(1500);

  }

}

只看该作者 · 2023-8-25 16:19

4.运行结果

2万 · 2023-8-25 22:00

先得实现一个向SSD1306写入一个字节的函数

只看该作者 · 2023-8-26 09:15

OLED功耗低，显示效果好。