This program is for Cansat made with BreadBoard which have pressure sensor LPS331. This program is based on http://mbed.org/users/nyamfg/code/LPS331_HelloWorld/

Dependencies:   mbed

Revision:
11:3342540c22d8
Parent:
10:40521f3084ba
Child:
12:6b5035346d43
--- a/main.cpp	Wed Sep 10 04:34:42 2014 +0000
+++ b/main.cpp	Fri Sep 19 09:39:03 2014 +0000
@@ -17,7 +17,7 @@
 
 //地面との相対高度算出用
 #define GROUND_AVE_NUM 10
-float ground_height=0;
+float ground_alti=0;
 
 LPS331_I2C lps331(p9, p10, LPS331_I2C_SA0_HIGH); // 気圧センサ
 
@@ -42,19 +42,19 @@
     // 地面の高度を求める 
     for(i=0;i<GROUND_AVE_NUM;i++) {
         pres = lps331.getPressure();    // 気圧
-        ground_height += lps331.getAltitude(P0, TEMP, pres);
+        ground_alti += lps331.getAltitude(P0, TEMP, pres);
         wait(1/7);
     }
-    ground_height = ground_height / GROUND_AVE_NUM;
+    ground_alti = ground_alti / GROUND_AVE_NUM;
     
     while(1) {
         int ms=0;       // リセットからの経過時間(単位:ミリ秒(MilliSecond)
-        float height;                       // 高度
+        float altitude;                       // 高度
         pres=lps331.getPressure();    // 気圧
         temp=lps331.getTemperature(); // 気温
 
         // 高度算出
-        height = lps331.getAltitude(P0, TEMP, pres);
+        altitude = lps331.getAltitude(P0, TEMP, pres);
         
         if(JP==0) {     // JPが0(GND)だったら、
             break;      //whileのループを終了
@@ -63,11 +63,11 @@
         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 %5.1f \r\n", ms, pres, temp, height);   // 時刻,気圧,気温,高度を出力
-        printf(      "%10d,%6.2f,%4.1f,Ground:%5.1f Height:%5.1f Diff%5.1f \r\n", ms, pres, temp, ground_height, height, height-ground_height);
+        fprintf(fp,  "%10d,%6.2f,%4.1f %5.1f \r\n", ms, pres, temp, altitude);   // 時刻,気圧,気温,高度を出力
+        printf(      "%10d,%6.2f,%4.1f,Ground:%5.1f altitude:%5.1f Diff%5.1f \r\n", ms, pres, temp, ground_alti, altitude, altitude-ground_alti);
         fclose(fp);
 
-        telem.printf("%5.1f\n", height-ground_height);   // 高度を出力
+        telem.printf("%5.1f\n", altitude-ground_alti);   // 高度を出力
         wait(0.05);     // LED点滅
         myled = 1;
         wait(0.05);