#include "OLDE.h"
#include "BMP.h"//OLED图片显示文件
#include "public.h"
#include "SGP30.h"
#include "stdio.h"
#define uchar unsigned char
#define uint unsigned int
void Delay1000ms() //@12.000MHz
{
unsigned char i, j, k;
i = 46;
j = 153;
k = 245;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void Uart_Init(void) //串口9600bps@11.0592MHz
{
SCON = 0x50; //8位数据,可变波特率
TMOD |= 0x20; //设定定时器1为8位自动重装方式
TL1 = 0xFD; //设定定时初值
TH1 = 0xFD; //设定定时器重装值
ET1 = 0; //禁止定时器1中断
TR1 = 1; //启动定时器1
TI=1;
ES = 1;
EA = 1;
}
void main(void)
{
u32 sgp30_dat;
u16 CO2Data,TVOCData;//定义CO2浓度变量与TVOC浓度变量
uchar CO2Data1[4],TVOCData1[4];//定义CO2浓度变量与TVOC浓度变量,
Uart_Init();//串口
printf("SGP30模块STC89C52测试程序\r\n");
SGP30_Init(); //初始化SGP30
delay_ms(100);
SGP30_Write(0x20,0x08);
sgp30_dat = SGP30_Read();//读取SGP30的值
CO2Data = (sgp30_dat & 0xffff0000) >> 16;
TVOCData = sgp30_dat & 0x0000ffff;
//SGP30模块开机需要一定时间初始化,在初始化阶段读取的CO2浓度为400ppm,TVOC为0ppd且恒定不变
//初始化完成后刚开始读出数据会波动比较大,属于正常现象,一段时间后会逐渐趋于稳定。
//气体类传感器比较容易受环境影响,测量数据出现波动是正常的,可自行添加滤波函数。
OLED_init();//初始化OLED(内存地址模式默认使用水平地址模式,可在初始化程序中更改)
while(1)
{
SGP30_Write(0x20,0x08);
sgp30_dat = SGP30_Read();//读取SGP30的值
CO2Data = (sgp30_dat & 0xffff0000) >> 16;//取出CO2浓度值
TVOCData = sgp30_dat & 0x0000ffff; //取出TVOC值
//把数据转为数组的形式传递给oled
CO2Data1[0]='0'+(CO2Data/1000);
CO2Data1[1]='0'+(CO2Data/100%10);
CO2Data1[2]='0'+(CO2Data/10%10);
CO2Data1[3]='0'+(CO2Data%10);
TVOCData1[0]='0'+(TVOCData/1000);
TVOCData1[1]='0'+(TVOCData/100%10);
TVOCData1[2]='0'+(TVOCData/10%10);
TVOCData1[3]='0'+(TVOCData%10);
//打印BMP图片(图片数组,选择图片的取模方式(水平取模:0x00或垂直取模:0x01),是否反色(填0或1))
//OLED_print_BMP(BMP0,0x00,0);
// Delay1000ms();
OLED_clear();//清屏
//显示部分
OLED_print_text(0,0,"CO2:",0);
OLED_print_char(0,6,CO2Data1[0],0);
OLED_print_char(0,7,CO2Data1[1],0);
OLED_print_char(0,8,CO2Data1[2],0);
OLED_print_char(0,9,CO2Data1[3],0);
OLED_print_char(0,11,'P',0);
OLED_print_char(0,12,'P',0);
OLED_print_char(0,13,'M',0);
OLED_print_text(1,0,"TVOC:",0);
OLED_print_char(1,6,TVOCData1[0],0);
OLED_print_char(1,7,TVOCData1[1],0);
OLED_print_char(1,8,TVOCData1[2],0);
OLED_print_char(1,9,TVOCData1[3],0);
OLED_print_char(1,11,'P',0);
OLED_print_char(1,12,'P',0);
OLED_print_char(1,13,'M',0);
printf("CO2:%dppm\r\nTVOC:%dppd\r\n",CO2Data,TVOCData);
Delay1000ms();
}
}
void Uart_Isr() interrupt 4//中断
{
if (RI)
{
RI = 0;
}
}
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