【AT-START-F423测评】8.综合应用实现简单的信息显示屏
#申请原创# @21小跑堂综合前面已经实现的功能用这些东西简单做一个信息显示屏
显示屏分3个页面，用开发板上的按键进行切换
第1页显示一些欢迎信息
void lcd_change()
{
yuyy_hs12864g18b_clear_screen(&hs12864_dev);
if(mode == 0)
{
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,0,0,(uint8_t *)" AT32F423 TEST");
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,2,0,(uint8_t *)" WELCOME ");
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,4,0,(uint8_t *)" Press userkey");
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,6,0,(uint8_t *)"Code by yuyy1989");
}
else if(mode == 1)
{
bmp280_readpress();
dht11_readHT();
}
else
{
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,2,0,(uint8_t *)" Wait data ");
}
}第2页显示时钟和传感器数据
uint8_t *WeekdayStr= {"SUN","MON","TUE","WED","THU","FRI","SAT"};
void showtime()
{
ertc_time_type time;
char out;
ertc_calendar_get(&time);
if(mode != 1)
return;
sprintf(out," 20%02d-%02d-%02d %s ",time.year, time.month, time.day,WeekdayStr);
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,0,0,(uint8_t *)out);
sprintf(out," %02d:%02d:%02d ",time.hour, time.min, time.sec);
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,2,0,(uint8_t *)out);
}
void bmp280_readpress()
{
float temp,press;
char out;
temp = yuyy_bmp280_readtemp(&bmp280_dev);
press = yuyy_bmp280_readpress(&bmp280_dev);
if(mode != 1)
return;
sprintf(out," %.1fPa",press);
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,6,0,(uint8_t *)out);
}
void dht11_readHT()
{
float humi,temp;
char out;
uint8_t outlen;
uint8_t result = yuyy_dht11_readHT(&dht11_dev,&temp,&humi);
if(YUYY_DHT11_OK == result)
{
if(mode != 1)
return;
outlen = sprintf(out,"%.1f%% %.1f",humi,temp);
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,4,0,(uint8_t *)out);
yuyy_hs12864g18b_display_graphic_16x16(&hs12864_dev,0,4,8*outlen,(uint8_t *)test16x16temp);
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,4,8*(outlen+2),(uint8_t *)" ");
}
}第3页显示电脑CPU内存占用和网速，通过串口接收上位机发送过来的数据并显示
uint8_t lcdhead = {'L','C','D',':'};
uint8_t lcdbuf = {0};
uint8_t lcdheadindex = 0;
uint8_t lcdrowindex = 0;
uint8_t lcdcolindex = 0;
uint8_t lcd_showflag = 0;
void uart_receivebyte(uint8_t dat)
{
if(lcdheadindex < 4)
{
if(dat == lcdhead)
lcdheadindex += 1;
else
lcdheadindex = 0;
}
else
{
if(dat == '\n')
{
lcd_showflag = 1;
}
else if(dat == '#')
{
lcdrowindex += 1;
lcdcolindex = 0;
}
else if(lcdrowindex < 4 && lcdcolindex < 16)
{
lcdbuf = dat;
lcdcolindex += 1;
}
}
}
void procLcddata()
{
if(mode != 2)
return;
uint8_t i = 0;
while(i<4)
{
yuyy_hs12864g18b_display_string_8x16(&hs12864_dev,0,i*2,0,lcdbuf);
i += 1;
}
memset(lcdbuf,' ',68);
lcdbuf = 0;
lcdbuf = 0;
lcdbuf = 0;
lcdbuf = 0;
lcdheadindex = 0;
lcdrowindex = 0;
lcdcolindex = 0;
}运行效果
https://www.bilibili.com/video/BV1ww411B79p/
屏幕的刷新频率达到多少不会出现闪烁的情况呢 可以通过这种方式来现实一些系统实时运行的信息 这种屏幕可以实现屏幕分辨率的自适应显示吗 可以使用这个方式进行程序的监控
这个屏幕是 使用的串口通讯方式是吧 可以多加几个按钮 丰富显示的内容
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