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资源说明：PM2.5检测实现，WiFi模块esp8266实现：
#include "esp8266.h"
#include "pm.h"
char Cache[40];
char Result[2];
char data*data wifi="2021";
char data*data wifiword="20212021";
char data*data TCP="183.230.40.40";
char data*data TCP_port="1811";
char data*data key="*251177#test#test*";
int state;
int state_OK=1;
int i=0; //计数
void Wifi_state(int state1){
switch(state1){
case 0: Wifi_Com("AT+CWMODE=1");Wifi_OK();break;
case 1: Wifi_Com("AT+RST");Wifi_OK();break;
case 2: Wifi_Com("AT+CIPMUX=0");Wifi_OK();break;
case 3: Wifi_Hotspot(wifi,wifiword);Wifi_OK();break;
case 4: Wifi_Com("AT+CIPMODE=1");Wifi_OK();break;
case 5: Wifi_Tcp(TCP,TCP_port);Wifi_OK();break;
case 6: Wifi_Com("AT+CIPSEND");delayms(2000);Wifi_dat(key);delayms(5000);state++;break;
}
if(state<7){
Wifi_state(state);
}else{
if(state==7){
Wifi_dat("+++");delayms(1000);Wifi_Com("AT+CIPSEND");delayms(2000);Wifi_dat(30);delayms(2000);Wifi_dat(30);delayms(5000);
}
return;
}
}
void Wifi_OK(){ //判断OK
unsigned long int i=0;
while(state_OK){
i++;
if(i==1000000){
state=0;
return;
}
}
state_OK=1;
state++;
}
void Wifi_dat(char* dat){
send(dat);
}
void Wifi_Tcp(char* TCP,char* TCP_port){ //连接TCP
sprintf((char*)Cache,"AT+CIPSTART=\"TCP\",\"%s\",%s",TCP,TCP_port);
send(Cache);
send("\r\n");
Cache_clear();
}
void Wifi_Hotspot(char* wifi,char* wifiword){ //连接WIFI
delayms(2000);
sprintf((char*)Cache,"AT+CWJAP=\"%s\",\"%s\"",wifi,wifiword);
send(Cache);
send("\r\n");
Cache_clear();
}
void Wifi_Com(char* Com){ //发送命令
sprintf((char*)Cache,"%s",Com);
send(Cache);
send("\r\n");
Cache_clear();
}
void Cache_clear(){
int j;
for(j=0;j<40;j++){
Cache[j]=0;
}
}
void sbu() interrupt 4{
uchar num;
if(RI==0) return;
ES=0;
RI=0;
num=SBUF;
Result[i]=num;
i=(i+1)%2;
if((num=='K')&&(Result[i]=='O')){ //OK, i=K i-1=O; 0=O 1=K 0=K 1=O
state_OK=0;
}
ES=1;
}
void send(uchar *p){
int i=0;
do{
SBUF=p[i++];
while(TI==0);
TI=0;
}
while(p[i]!=0);
}
void UartInit(void) //115200bps@11.0592MHz
{
SCON = 0x50; //8位数据,可变波特率
AUXR |= 0x40; //定时器1时钟为Fosc,即1T
AUXR &= 0xFE; //串口1选择定时器1为波特率发生器
TMOD &= 0x0F; //设定定时器1为16位自动重装方式
TL1 = 0xE8; //设定定时初值
TH1 = 0xFF; //设定定时初值
ET1 = 0; //禁止定时器1中断
TR1 = 1; //启动定时器1
}
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