Diff: main.cpp

Revision:

0:88b426acd89c

Child:

1:14bf00e73e45

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 01 14:14:24 2010 +0000
@@ -0,0 +1,121 @@
+#include "mbed.h"
+#include "BMP085.h"
+#include "SHT.h"
+#include "WeatherMeters.h"
+//#include "I2CLCD.h"
+#include "SDFileSystem.h"
+
+I2C i2c(p9, p10);
+
+BMP085 bmp085(i2c, BMP085_oss4);
+//I2CLCD i2clcd(i2c);
+SHT sht11(p12, p11, SHT_high); // sclock, data
+WeatherMeters wmeters(p21, p15, p22); // anemo, vane, rain
+
+DigitalOut led1(LED1), led2(LED2), led3(LED3);
+
+Serial pc(USBTX, USBRX);
+AnalogIn photo(p16);
+AnalogIn moist(p18);
+AnalogIn uv(p17);
+
+SDFileSystem sd(p5, p6, p7, p8, "sd"); 
+
+float get_photo (AnalogIn &ain) {
+    float f;
+    
+    f = ain * 5.0 / 1000; // A
+    return f / 0.0000026; // lx
+}
+
+float get_moist (AnalogIn &ain) {
+    float f;
+    
+    f = ain * 5.0; // V
+    return f / ((3.3 - f) / 10.0); // k ohm
+}
+
+float get_uv (AnalogIn &ain) {
+    float f;
+    
+    f = ain * 5.0 / 100000; // A
+    return f / 0.000384; // mW/cm2
+}
+
+int main() {
+    float p, t, h, b, a, v, r, m, u;
+    FILE *fp;
+    int seq = 0;
+    char filename[20];
+    Timer timer;
+    
+    led1 = 1;
+
+    fp = fopen("/sd/weather.seq", "r");
+    if (fp) {
+        fscanf(fp, "%d", &seq);
+        fclose(fp);
+    }
+    fp = fopen("/sd/weather.seq", "w");
+    if (fp) {
+        if (seq == 0) seq = 1;
+        fprintf(fp, "%d", seq);
+        fclose(fp);
+        sprintf(filename, "/sd/w%05d.csv", seq);
+        led2 = 1;
+    }
+    
+    timer.start();
+    
+    while(1) {
+        led1 = 0;
+
+        bmp085.update();
+        p = bmp085.get_pressure();
+        pc.printf("p:%6.2f hPa / t:%6.2f C\n", p, bmp085.get_temperature());
+
+        sht11.update(SHT_high);
+        t = sht11.get_temperature();
+        h = sht11.get_humidity();
+        pc.printf("t:%6.2f C / h:%6.2f %%\n", t, h);
+
+        a = wmeters.get_windspeed();
+        v = wmeters.get_windvane();
+        r = wmeters.get_raingauge();
+        pc.printf("a:%6.2f m/s / v:%6.2f / r:%6.2f mm\n", a, v, r);
+
+        b = get_photo(photo);
+        pc.printf("b:%6.2f lx\n", b);
+        m = get_moist(moist);
+        pc.printf("m:%6.2f k ohm\n", m);
+        u = get_uv(uv);
+        pc.printf("u:%6.2f mW/cm2\n", u);
+/*
+        i2clcd.locate(0, 0);
+        i2clcd.printf("%4.1f hPa", p);
+        i2clcd.locate(0, 1);
+        i2clcd.printf("%2.1f C / %2.1f %%", t, h);
+*/
+
+        if (seq) {
+            led3 = 1;
+            fp = fopen(filename, "a");
+            if (fp) {
+                fprintf(fp, "%f,%f,%f,%f,%f,%f\r\n", p, t, h, a, v, r);
+                fclose(fp);
+            } else {
+                led2 = 0;
+                seq = 0;
+            }
+            led3 = 0;
+        } else {
+            led2 = 0;
+            seq = 0;
+        }
+        
+        led1 = 1;
+
+        while (timer.read() < 60);
+        timer.reset();
+    }
+}