STC15F2K60S2單片機(jī)+esp8266+NTC APP溫度測量制作

ID:355489 · 發(fā)表于 2018-11-25 19:46

準(zhǔn)備材料：
STC15F2K60S2
esp8266
NTC熱敏電阻
10K電阻一個
連接線若干
手機(jī)APP:NetAssist
參考貼子：http://www.torrancerestoration.com/bbs/dpj-57255-1.html

接線圖：

APP界面：

單片機(jī)源程序如下:

#include<ADC.c>
#define uchar unsigned char
#define uint unsigned int
#define RELOAD_COUNT 0xFA //宏定義波特率發(fā)生器的載入值
#define MAIN_Fosc 22118400L //定義主時鐘
#define Timer1_Reload (65536UL -(MAIN_Fosc / 4 / BaudRate1)) //Timer 1 重裝值，對應(yīng)300KHZ
#define Timer2_Reload (65536UL -(MAIN_Fosc / 4 / BaudRate1)) //Timer 2 重裝值，對應(yīng)300KHZ
#define BaudRate1 115200UL //選擇波特率
#define ID_ADDR_ROM 0xeff7 //60K程序空間的MCU
#define ID_ADDR_RAM 0xef //對于只有256字節(jié)RAM的MCU(大部分系列)存放地址為0EFH
unsigned int code Ttable[106][2]={//溫度與電阻阻值對應(yīng)關(guān)系表格
0,3274,//0度對應(yīng)阻值32.74k
1,3111,//1度對應(yīng)阻值31.11k
2,2957,//2度對應(yīng)阻值29.57k
3,2812,//
4,2674,//
5,2545,6,2422,7,2306,8,2196,9,2092,10,1993,11,1900,12,1811,
13,1728,14,1648,15,1573,16,1501,17,1433,18,1369,19,1308,20,1250,
21,1194,22,1142,23,1092,24,1045,
25,1000,//25度對應(yīng)阻值10k
26,957,//26度對應(yīng)阻值9.57k
27,916,28,877,29,840,30,805,31,771,32,739,33,709,34,679,35,652,
36,625,37,600,38,576,39,553,40,531,41,510,42,490,43,471,44,453,
45,435,46,418,47,402,48,387,49,372,50,358,51,345,52,332,53,320,
54,308,55,297,56,286,57,276,58,266,59,256,60,247,61,238, 62,230,
63,222,64,214,65,207,66,199,67,193,68,186,69,180,70,174,71,168,
72,162,73,157,74, 152,75, 147,76, 142,77, 137,78, 133,79, 128,
80, 124,81, 120,82, 116,83, 113,84, 109,85, 106,
86, 102,//86度對應(yīng)阻值1.02k
87, 99,//87度對應(yīng)阻值0.99k
88, 96,89, 93,90, 90,91, 88,92, 85,93, 82,94, 80,95, 78,
96, 75,97, 73,98, 71,99, 69,100,67,101,65,102,63,103,61, 104,59,
105,58//105度對應(yīng)阻值0.58k
};
#define receive_max 50 //串口接收緩沖長度
uchar Recive_table[receive_max]; //用于接收wifi模塊反饋到MCU上的數(shù)據(jù)
u8 receive_count=0; //接受數(shù)據(jù)的個數(shù)
u16 NTC_R;//定義熱敏電阻阻值變量
int temperature;//定義溫度存儲變量
sbit LED0=P3^7;
uchar sent_table[receive_max];
void Uart_Init()//使用定時器1作為波特率發(fā)生器
{
SCON |= 0x40; //8位數(shù)據(jù)
P_SW1 &= ~0xc0; //UART1 使用P30 P31口默認(rèn)
TR1 = 0; //關(guān)閉定時器
TR1 = 0; //波特率使用Timer1產(chǎn)生
AUXR &= ~0x01; //S1 BRT Use Timer1;
TMOD &= ~(1<<6); //Timer1 set As Timer
TMOD &= ~0x30; //Timer1_16bitAutoReload;2
AUXR |= (1<<6); //Timer1 set as 1T mode
TH1 = (u8)(Timer1_Reload >> 8);
TL1 = (u8)Timer1_Reload;
TR1 = 1;
PS = 1; //高優(yōu)先級中斷
REN = 1; //允許接收
ES = 1; //允許中斷
EA = 1; //允許全局中斷
}
void Delay_ms(u16 n)
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<123;j++);
}
void sendByte(uchar b)
{ ES=0;
SBUF = b;
while(!TI);
TI=0;
ES=1;
}
void sendString(uchar *s)
{
while(*s != '\0') //字符串默認(rèn)結(jié)尾'\0'，以此來判斷字符串的結(jié)束
{
sendByte(*s++);
}
}
void ESP8266_Set(uchar *puf) // 數(shù)組指針*puf指向字符串?dāng)?shù)組
{
sendString(puf);
Delay_ms(10);
sendString("\r\n");//回車
}
void ESP8266_Sent(uchar *puf) // 數(shù)組指針*puf指向字符串?dāng)?shù)組
{
ESP8266_Set("AT+CIPSEND=0,60");
sendString(puf);
Delay_ms(10);
sendString("\r\n"); //回車
}
void ESP8266_Init()
{
Delay_ms(2000);
Delay_ms(1000);
ESP8266_Set("AT+CIPMUX=1"); //啟動多連接
Delay_ms(5000);
LED0=!LED0;
ESP8266_Set("AT+CIPSERVER=1,333");//建立server，端口為333
}
void T_dis(){//溫度處理函數(shù)采集到的阻值與二維數(shù)組的阻值進(jìn)行比較，從而獲得相對應(yīng)的溫度值。
unsigned char i;
temperature = 0;
for(i=105;i<106;i--) {
if(NTC_R >= Ttable[i][1] && NTC_R < Ttable[i-1][1]){
temperature=(Ttable[i][0]+1);
break;
}
}
}
void ADC_config(void)
{
ADC_InitTypeDef ADC_InitStructure; //結(jié)構(gòu)定義
ADC_InitStructure.ADC_Px = ADC_P10 | ADC_P11 | ADC_P12; //設(shè)置要做ADC的IO, ADC_P10 ~ ADC_P17(或操作),ADC_P1_All
ADC_InitStructure.ADC_Speed = ADC_360T; //ADC速度 ADC_90T,ADC_180T,ADC_360T,ADC_540T
ADC_InitStructure.ADC_Power = ENABLE; //ADC功率允許/關(guān)閉 ENABLE,DISABLE
ADC_InitStructure.ADC_AdjResult = ADC_RES_H8L2; //ADC結(jié)果調(diào)整, ADC_RES_H2L8,ADC_RES_H8L2
ADC_InitStructure.ADC_Polity = PolityLow; //優(yōu)先級設(shè)置 PolityHigh,PolityLow
ADC_InitStructure.ADC_Interrupt = DISABLE; //中斷允許 ENABLE,DISABLE
ADC_Inilize(&ADC_InitStructure); //初始化
ADC_PowerControl(ENABLE); //單獨(dú)的ADC電源操作函數(shù), ENABLE或DISABLE
}
// convert to char
char convert(u8 i) {
switch(i){
case 0:
return '0';
case 1:
return '1';
case 2:
return '2';
case 3:
return '3';
case 4:
return '4';
case 5:
return '5';
case 6:
return '6';
case 7:
return '7';
case 8:
return '8';
case 9:
return '9';
default:
return i;
}
}
void ShowResult(uchar ch)
{
u16 adc_res10,//測量設(shè)定通道adc值
bandgap, //bandgap預(yù)儲存校準(zhǔn)值，單位毫伏
adc_9gallery_res; //測量第九通道（bandgap）值
float power_voltage, //系統(tǒng)供電電壓，單位毫伏
R,ADC_voltage; //設(shè)定通道電壓值，單位毫伏
uchar code *cptr; //定義ROM(代碼)區(qū)指針
// uchar idata *iptr;//定義RAM(內(nèi)存)區(qū)指針
cptr = ID_ADDR_ROM; //從程序區(qū)讀取BandGap電壓值(單位:毫伏mV)
bandgap=*cptr++;
bandgap<<=8;
bandgap+=*cptr;
/*iptr = ID_ADDR_RAM; //從內(nèi)存區(qū)讀取BandGap電壓值(單位:毫伏mV)
bandgap=*iptr++; //兩種方法結(jié)果一樣，上面的方法需要在下載式勾選"在ID號前添加重要測試參數(shù)"選項(xiàng),才可在程序中獲取此參數(shù)
bandgap<<=8; //下面的方法不需要
bandgap+=*iptr; */
//測量設(shè)定通道adc值
ADC_RES = 0; //清除結(jié)果寄存器
P1ASF = 0x80; //設(shè)置P1口為AD口
Get_ADC10bitResult(ch);
Get_ADC10bitResult(ch); //讀三次獲得穩(wěn)定
adc_res10= Get_ADC10bitResult(ch);
//測量第九通道（bandgap）值
ADC_RES = 0; //清除結(jié)果寄存器
P1ASF = 0x00; //設(shè)置讀第九通道
Get_ADC10bitResult(0); //測bandgap時，調(diào)用此函數(shù)時通道數(shù)只能填0
Get_ADC10bitResult(0); //讀三次獲得穩(wěn)定
adc_9gallery_res=Get_ADC10bitResult(0);
//計(jì)算系統(tǒng)供電電壓
power_voltage= (float)bandgap*1024/adc_9gallery_res;
//計(jì)算ADC通道測得電壓值
ADC_voltage= (float)bandgap*adc_res10/adc_9gallery_res;
R=1000*ADC_voltage/(power_voltage-ADC_voltage);
NTC_R=R;//把float浮點(diǎn)數(shù)轉(zhuǎn)化為int型
}
void main()
{
Uart_Init();
ESP8266_Init();
Delay_ms(20);//待系統(tǒng)穩(wěn)定
ADC_config();
while(1){
ShowResult(7);
if(receive_count > 0)//如果接受到數(shù)據(jù)
{
Delay_ms(500);
receive_count = 0;//接收計(jì)數(shù)清0
if(Recive_table[9]=='0') {
sent_table[receive_max]= '\0';
sent_table[0]='N';
sent_table[1]='T';
sent_table[2]='C';
sent_table[3]='=';
sent_table[4]=convert(NTC_R/1000);
sent_table[5]=convert(NTC_R%1000/100);
sent_table[6]=convert(NTC_R%100/10);
sent_table[7]=convert(NTC_R%10);
T_dis();
sent_table[8]='T';sent_table[9]='=';
sent_table[10]=convert(temperature%1000/100);
sent_table[11]=convert(temperature%100/10);
sent_table[12]=convert(temperature%10);
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