Diff: main.cpp

Revision:

0:ee87c3246381

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 30 06:26:12 2018 +0000
@@ -0,0 +1,182 @@
+#include "mbed.h"
+#include "kor_char_code.h"
+#include <stdint.h>
+
+#define        COV_RATIO                       0.2            //ug/mmm / mv
+#define        NO_DUST_VOLTAGE                 400            //mv
+#define        SYS_VOLTAGE                     5000       
+
+Serial pc(USBTX,USBRX); // tx, rx
+Serial TFT(PC_02,PC_03); // tx, rx
+Serial lora(PA_13,PA_14); // tx, rx
+Timer timer;
+AnalogIn dustVal(A0);
+DigitalOut myled(D6);
+int flag_first = 0;
+
+int calibration(int m)
+{
+  static int _buff[10], sum;
+  const int _buff_max = 10;
+  int i;
+  
+  if(flag_first == 0)
+  {
+    flag_first = 1;
+
+    for(i = 0, sum = 0; i < _buff_max; i++)
+    {
+      _buff[i] = m;
+      sum += _buff[i];
+    }
+    return m;
+  }
+  else
+  {
+    sum -= _buff[0];
+    for(i = 0; i < (_buff_max - 1); i++)
+    {
+      _buff[i] = _buff[i + 1];
+    }
+    _buff[9] = m;
+    sum += _buff[9];
+    
+    i = sum / 10.0;
+    return i;
+  }
+}
+	
+
+int main()
+{
+    char buffer[200];
+    TFT.baud(115200);
+    lora.baud(38400);
+    unsigned int curr_Time1;
+    unsigned int curr_Time2;
+    float analogVal =0;
+    int analogVal_u16 =0;
+    float digitalVal =0;
+    float dustDensity =0;
+    int samplingTime = 280;
+    int deltaTime = 40;
+    int sleepTime = 9680;
+    int x=1;
+    int y=1;
+    int w = 500;
+    int h = 220;
+    int red = 255;
+    int green = 255;
+    int blue = 255;
+    int fill=1;
+
+    timer.start();
+    curr_Time1 = timer.read();
+    TFT.printf("$l,0,%d,%d,%d#",red,green,blue); // 사각형 색(흰색) 지정
+    lora.printf("AT+RST\r\n");  
+
+    while(1)
+    {
+        /*
+        if(lora.readable()){
+            lora.gets(buffer,40);
+
+            if( strstr(buffer,"JOINED\r\n") == NULL ){
+                TFT.printf("$f,4,1,#"); // 글자 크기 조절
+                TFT.printf("$f,0,Not joined ,1,120,#\r\n");
+                continue;
+            }
+            
+            if( strstr(buffer,"JOINED\r\n") != NULL ){
+                TFT.printf("$f,0,joined !!! ,1,140,#");
+                continue;
+            }
+            
+        }*/
+        TFT.printf("$f,4,2,#"); // 글자 크기 조절
+        curr_Time2 = timer.read();
+
+		
+        if( curr_Time2-curr_Time1 == 1) {
+        	
+        myled = 0;
+        wait_us(samplingTime);
+
+        analogVal = dustVal.read();
+        analogVal_u16 = dustVal.read_u16();
+        wait_us(deltaTime);
+        myled = 1;
+        wait_us(sleepTime);
+        
+        analogVal_u16 = calibration(analogVal_u16); // 보정
+
+        //digitalVal = analogVal_u16 *(5.0/4096);
+        digitalVal =  (SYS_VOLTAGE / 4096.0) * analogVal_u16; //adc변 (mv)
+        // dustDensity = (0.17*digitalVal) -0.1;
+        
+        if(digitalVal >= NO_DUST_VOLTAGE)
+        {
+          	digitalVal -= NO_DUST_VOLTAGE;
+          	dustDensity = digitalVal * COV_RATIO; // Voltage(mv)값을  dust density로 변(ug/m3)
+          	dustDensity -= 50;
+        }
+        else
+        {
+            dustDensity = 0;
+        }
+        
+
+		TFT.printf("$l,2,%d,%d,%d,%d,%d#",x,y,w,h,fill==0?0:1); //흰 사각형 출력(지우기)
+		TFT.printf("$f,0,Fine Dust(PM 2.5),1,1,#\r\n");    
+		TFT.printf("$f,0,Value : %f (ug/m3),1,30,#\r\n",dustDensity);        	
+        TFT.printf("$f,0,current Time : %f (s),1,60,#\r\n",timer.read());
+        
+        if( (dustDensity>=0) && (dustDensity<=15) )
+        {
+        	TFT.printf("$f,0,STATUS :,1,90,#\r\n"); 
+        	TFT.printf("$f,1,0,174,240#\r\n"); 
+        	TFT.printf("$f,0,GOOD :> ,140,90,#\r\n");   
+        	TFT.printf("$f,1,0,0,0#\r\n"); 
+        	 
+        }
+        
+        else if( (dustDensity>=16) && (dustDensity<=50) )
+        {
+        	TFT.printf("$f,0,STATUS :,1,90,#\r\n"); 
+        	TFT.printf("$f,1,120,254,98#\r\n"); 
+        	TFT.printf("$f,0,NORMAL :) ,140,90,#\r\n");  
+        	TFT.printf("$f,1,0,0,0#\r\n");   
+        }
+        
+        else if( (dustDensity>=51) && (dustDensity<=100) )
+        {
+        	TFT.printf("$f,0,STATUS :,1,90,#\r\n"); 
+        	TFT.printf("$f,1,255,255,75#\r\n"); 
+        	TFT.printf("$f,0,BAD :( ,140,90,#\r\n");   
+        	TFT.printf("$f,1,0,0,0#\r\n");  
+        }
+        
+        else if(dustDensity>=101)
+        {
+        	TFT.printf("$f,0,STATUS :,1,90,#\r\n"); 
+        	TFT.printf("$f,1,255,51,51#\r\n"); 
+        	TFT.printf("$f,0,DANGER :<,140,90,#\r\n");  
+        	TFT.printf("$f,1,0,0,0#\r\n");   
+        }
+        else
+        {
+        	TFT.printf("$f,0,STATUS :,1,90,#\r\n"); 
+        	TFT.printf("$f,1,0,0,0#\r\n"); 
+        	TFT.printf("$f,0,WAIT !,140,90,#\r\n");
+        	TFT.printf("$f,1,0,0,0#\r\n");    
+        }
+        	
+            
+        //lora.printf("AT+SEND 01015445//\r\n");  
+
+        curr_Time1 = curr_Time2;
+        }
+    }
+}
+
+