Toru OHTSUKA / Mbed 2 deprecated BBsatLPS331

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

main.cpp@8:505d06bba7b1, 2014-09-08 (annotated)

Committer:
ohtsuka
Date:
Mon Sep 08 06:06:04 2014 +0000
Revision:
8:505d06bba7b1
Parent:
7:8407141d1f70
Child:
9:3285ed711197
XBee?????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nyamfg 0:1a3c5ad01539 1 #include "mbed.h"
ohtsuka 7:8407141d1f70 2 #include <math.h>
nyamfg 0:1a3c5ad01539 3 #include "LPS331_I2C.h"
nyamfg 0:1a3c5ad01539 4
ohtsuka 7:8407141d1f70 5 //気圧計算用
ohtsuka 7:8407141d1f70 6 #define P0 1013.25f //海面気圧(hPa)
ohtsuka 7:8407141d1f70 7 #define TEMP 20 //気温(度)
ohtsuka 7:8407141d1f70 8
ohtsuka 4:4c01d79dd741 9 DigitalOut myled(LED1);
ohtsuka 6:496f4e967298 10 DigitalOut JPlow(p5); // p6ピンでLowを検出させるために使用。隣同士(p5,p6)のピンをショートさせるとログ出力停止
ohtsuka 3:cb51cc4a041d 11 DigitalIn JP(p6);
ohtsuka 3:cb51cc4a041d 12 LocalFileSystem local("local");
ohtsuka 4:4c01d79dd741 13
ohtsuka 8:505d06bba7b1 14 Serial telem(p13,p14);
ohtsuka 8:505d06bba7b1 15
ohtsuka 3:cb51cc4a041d 16 Timer t;
nyamfg 0:1a3c5ad01539 17
ohtsuka 4:4c01d79dd741 18 LPS331_I2C lps331(p9, p10, LPS331_I2C_SA0_HIGH); // 気圧センサ
ohtsuka 4:4c01d79dd741 19
nyamfg 0:1a3c5ad01539 20 int main() {
ohtsuka 6:496f4e967298 21 JPlow = 0;
ohtsuka 4:4c01d79dd741 22 JP.mode(PullUp);
ohtsuka 4:4c01d79dd741 23
nyamfg 0:1a3c5ad01539 24 lps331.setResolution(LPS331_I2C_PRESSURE_AVG_512, LPS331_I2C_TEMP_AVG_128);
ohtsuka 4:4c01d79dd741 25 lps331.setDataRate(LPS331_I2C_DATARATE_7HZ); // 7Hz(1秒間に7回更新)
ohtsuka 4:4c01d79dd741 26 lps331.setActive(true); // 動作開始
ohtsuka 3:cb51cc4a041d 27
ohtsuka 4:4c01d79dd741 28 FILE *fp = fopen("/local/data.txt", "a"); // 「追記」でファイルを開く
ohtsuka 4:4c01d79dd741 29 fprintf(fp,"BBsat start. **********\r\n"); // fprintf()は、ファイルに文字を出力
ohtsuka 3:cb51cc4a041d 30 fclose(fp);
nyamfg 0:1a3c5ad01539 31
ohtsuka 8:505d06bba7b1 32 telem.printf("BBsat start. **********\r\n"); // テレメトリ用出力
ohtsuka 8:505d06bba7b1 33
ohtsuka 3:cb51cc4a041d 34 t.start();
nyamfg 2:70ce034cfcfc 35
ohtsuka 4:4c01d79dd741 36 while(1) {
ohtsuka 4:4c01d79dd741 37 int ms=0; // リセットからの経過時間(単位:ミリ秒(MilliSecond)
ohtsuka 4:4c01d79dd741 38 float pres=lps331.getPressure(); // 気圧
ohtsuka 4:4c01d79dd741 39 float temp=lps331.getTemperature(); // 気温
ohtsuka 7:8407141d1f70 40 float height; // 高度
ohtsuka 3:cb51cc4a041d 41
ohtsuka 8:505d06bba7b1 42 // 高度算出
ohtsuka 7:8407141d1f70 43 height = ( (powf((P0/pres),1/5.257f)-1)*(TEMP+273.15) ) / 0.0065f;
ohtsuka 7:8407141d1f70 44
ohtsuka 4:4c01d79dd741 45 if(JP==0) { // JPが0(GND)だったら、
ohtsuka 4:4c01d79dd741 46 break; //whileのループを終了
ohtsuka 3:cb51cc4a041d 47 }
ohtsuka 3:cb51cc4a041d 48
ohtsuka 4:4c01d79dd741 49 ms = t.read_ms(); //現在時刻を取得
ohtsuka 3:cb51cc4a041d 50
ohtsuka 4:4c01d79dd741 51 FILE *fp = fopen("/local/data.txt", "a");
ohtsuka 7:8407141d1f70 52 fprintf(fp, "%10d,%6.2f,%4.1f,%5.1f\r\n", ms, pres, temp, height); // 時刻,気圧,気温を出力
ohtsuka 3:cb51cc4a041d 53 fclose(fp);
ohtsuka 4:4c01d79dd741 54
ohtsuka 8:505d06bba7b1 55 telem.printf("%10d,%6.2f,%4.1f,%5.1f\r\n", ms, pres, temp, height); // 時刻,気圧,気温を出力
ohtsuka 4:4c01d79dd741 56 wait(0.05); // LED点滅
ohtsuka 4:4c01d79dd741 57 myled = 1;
ohtsuka 3:cb51cc4a041d 58 wait(0.05);
ohtsuka 4:4c01d79dd741 59 myled = 0;
nyamfg 0:1a3c5ad01539 60 }
nyamfg 0:1a3c5ad01539 61 }