Diff: main.cpp

Revision:

4:4c01d79dd741

Parent:

3:cb51cc4a041d

Child:

5:f2944e456618

Child:

6:496f4e967298

--- a/main.cpp	Wed Jun 18 10:35:42 2014 +0000
+++ b/main.cpp	Thu Jul 24 01:10:38 2014 +0000
@@ -1,57 +1,46 @@
 #include "mbed.h"
 #include "LPS331_I2C.h"
 
-Serial pc(USBTX, USBRX);
-LPS331_I2C lps331(p9, p10, LPS331_I2C_SA0_HIGH);
-
+DigitalOut myled(LED1);
 DigitalIn JP(p6);
-DigitalOut myled1(LED1);
 LocalFileSystem local("local"); 
+
 Timer t;
 
+LPS331_I2C lps331(p9, p10, LPS331_I2C_SA0_HIGH); // 気圧センサ
+
 int main() {
 
-    pc.printf("LPS331 Test Program.\r\n");
-    
-    if(lps331.isAvailable()) {
-        pc.printf("LPS331 is available!\r\n");
-    } else {
-        pc.printf("LPS331 is unavailable!\r\n");
-    }
-    
+    JP.mode(PullUp);
+
     lps331.setResolution(LPS331_I2C_PRESSURE_AVG_512, LPS331_I2C_TEMP_AVG_128);
-    lps331.setDataRate(LPS331_I2C_DATARATE_7HZ);
-    lps331.setActive(true);
+    lps331.setDataRate(LPS331_I2C_DATARATE_7HZ); // 7Hz(1秒間に7回更新)
+    lps331.setActive(true); // 動作開始
               
-    FILE *fp = fopen("/local/data.txt", "a");
-    fprintf(fp,"**********\r\n");
+    FILE *fp = fopen("/local/data.txt", "a");   // 「追記」でファイルを開く
+    fprintf(fp,"BBsat start. **********\r\n");  // fprintf()は、ファイルに文字を出力
     fclose(fp);
 
     t.start();
     
-    while(true) {
-        float pres, temp;
-        int ms;
+    while(1) {
+        int ms=0;       // リセットからの経過時間(単位:ミリ秒(MilliSecond)
+        float pres=lps331.getPressure();    // 気圧
+        float temp=lps331.getTemperature(); // 気温
 
-        if(JP==0) {
-            break;
+        if(JP==0) {     // JPが0(GND)だったら、
+            break;      //whileのループを終了
         }
-        
-        FILE *fp = fopen("/local/data.txt", "a");
 
-        pres = lps331.getPressure();
-        temp = lps331.getTemperature();
-        
-        ms = t.read_ms();
-                              
-        pc.printf(  "%10d,%6.2f,%4.1f\r\n", ms, pres, temp);
-        fprintf(fp, "%10d,%6.2f,%4.1f\r\n", ms, pres, temp);
+        ms = t.read_ms(); //現在時刻を取得
 
+        FILE *fp = fopen("/local/data.txt", "a");
+        fprintf(fp,  "%10d,%6.2f,%4.1f\r\n", ms, pres, temp);   // 時刻,気圧,気温を出力
         fclose(fp);
-        
+
+        wait(0.05);     // LED点滅
+        myled = 1;
         wait(0.05);
-        myled1 = 1;
-        wait(0.05);
-        myled1 = 0;
+        myled = 0;
     }
 }