御神楽的学习记录之SPI接口OLED屏显示温湿度
文章目录
- 前言
- 一、简单汉字显示
-
- 1.添加汉字字模
- 2.汉字显示代码
- 3.汉字显示效果
- 二、OLED显示温湿度
-
- 1.主函数代码
- 2.效果展示
- 参考
前言
SPI是串行外设接口(Serial Peripheral Interface)的缩写。SPI，是一种高速的，全双工，同步的通信总线，并且在芯片的管脚上只占用四根线，节约了芯片的管脚，同时为PCB的布局上节省空间，提供方便，正是出于这种简单易用的特性，如今越来越多的芯片集成了这种通信协议，比如AT91RM9200。
一、简单汉字显示
1.添加汉字字模
1、在文件oledfont.h中添加汉字字模
"御",0x14,0x00,0x14,0x00,0x27,0xDE,0x49,0x12,0x91,0x12,0x11,0x12,0x2F,0xD2,0x61,0x12,
0xA1,0x12,0x25,0xD2,0x25,0x12,0x25,0x1A,0x25,0xD4,0x3E,0x10,0x28,0x10,0x20,0x10,
"神",0x20,0x20,0x10,0x20,0x10,0x20,0xF9,0xFC,0x09,0x24,0x11,0x24,0x11,0x24,0x39,0xFC,
0x55,0x24,0x95,0x24,0x11,0x24,0x11,0xFC,0x11,0x24,0x10,0x20,0x10,0x20,0x10,0x20,
"楽",0x01,0x00,0x42,0x04,0x27,0xC8,0x14,0x50,0x04,0x40,0x17,0xD0,0x24,0x48,0xC4,0x44,
0x07,0xC0,0x01,0x00,0xFF,0xFE,0x05,0x40,0x09,0x20,0x31,0x18,0xC1,0x06,0x01,0x00,
"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*/
"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",1*/
"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",2*/
"℃",0x60,0x00,0x91,0xF4,0x96,0x0C,0x6C,0x04,0x08,0x04,0x18,0x00,0x18,0x00,0x18,0x00,
0x18,0x00,0x18,0x00,0x18,0x00,0x08,0x00,0x0C,0x04,0x06,0x08,0x01,0xF0,0x00,0x00,/*"℃",0*/
2.汉字显示代码
GUI_ShowString(28,0,"YuKaguraNe",16,1);//英文姓名
GUI_ShowCHinese(40,20,16,"御神楽",1);//中文姓名
GUI_ShowString(20,48,"631807060417",16,1);//数字详细
delay_ms(100);
函数原型
字符串显示
void GUI_ShowString(u8 x,u8 y,u8 *chr,u8 Char_Size,u8 mode);
汉字显示
void GUI_ShowCHinese(u8 x,u8 y,u8 hsize,u8 *str,u8 mode);
3.汉字显示效果
二、OLED显示温湿度
温湿度代码参考：御神楽的学习记录之基于I2C协议的AHT20温湿度传感器的数据采集
1.主函数代码
#include "delay.h"
#include "sys.h"
#include "oled.h"
#include "gui.h"
#include "test.h"
#include "AHT20.h"
uint32_t CT_data[2]={0,0};
volatile int c1,t1;
u8 temp[10];
u8 hum[10];
int main(void)
{
delay_init(); //延时函数初始化
OLED_Init(); //初始化OLED
OLED_Clear(0); //清屏（全黑）
AHT20_Init();
Delay_1ms(500);
if((AHT20_Read_Status()&0x18)!=0x18)
{
AHT20_Start_Init(); //重新初始化寄存器
Delay_1ms(10);
}
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(0x02,OLED_CMD); //终止页 2
OLED_WR_Byte(0x00,OLED_CMD); //虚拟字节
OLED_WR_Byte(0xFF,OLED_CMD); //虚拟字节
GUI_ShowCHinese(10,0,16,"御神楽",1);//中文姓名
while(1){
AHT20_Read_CTdata(CT_data);; //crc校验后，读取AHT20的温度和湿度数据
c1 = CT_data[0]*1000/1024/1024; //计算得到湿度值c1（放大了10倍）
t1 = CT_data[1]*2000/1024/1024-500;//计算得到温度值t1（放大了10倍）
temp[0]=t1/100+'0';
temp[1]=(t1/10)%10+'0';
temp[2]='.';
temp[3]=t1%10+'0';
temp[4]='\0';
hum[0]=c1/100+'0';
hum[1]=(c1/10)%10+'0';
hum[2]='.';
hum[3]=c1%10+'0';
hum[4]=32;
hum[5]='%';
hum[6]='\0';
GUI_ShowCHinese(15,28,16,"温度",1);
GUI_ShowString(47,28,":",16,1);
GUI_ShowString(62,28,temp,16,1);
GUI_ShowCHinese(96,28,16,"℃",1);
GUI_ShowCHinese(15,48,16,"湿度",1);
GUI_ShowString(47,48,":",16,1);
GUI_ShowString(62,48,hum,16,1);
OLED_WR_Byte(0x2F,OLED_CMD); //开启滚动
Delay_1ms(3135);
}
2.效果展示
参考
https://blog.csdn.net/qq_47281915/article/details/121439706?spm=1001.2014.3001.5501