DHT11 and LCD, humidity, temperature, dew point

Dependencies:   Freetronics_16x2_LCD mbed

Files at this revision

API Documentation at this revision

Comitter:
fblanc
Date:
Tue Feb 24 12:41:17 2015 +0000
Commit message:
test ST nucleo L152RE OK

Changed in this revision

DHT.lib Show annotated file Show diff for this revision Revisions of this file
Freetronics_16x2_LCD.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 5e787e0e8ab6 DHT.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DHT.lib	Tue Feb 24 12:41:17 2015 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/sam_grove/code/DHT/#df22ddf10d75
diff -r 000000000000 -r 5e787e0e8ab6 Freetronics_16x2_LCD.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Freetronics_16x2_LCD.lib	Tue Feb 24 12:41:17 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/teams/components/code/Freetronics_16x2_LCD/#0e04b6c4abb8
diff -r 000000000000 -r 5e787e0e8ab6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Feb 24 12:41:17 2015 +0000
@@ -0,0 +1,69 @@
+#include "mbed.h"
+#include "freetronicsLCDShield.h"
+#include "DHT.h"
+
+freetronicsLCDShield lcd(D8, D9, D4, D5, D6, D7, D3, A0);
+DHT sensor(A5, DHT11);
+DigitalOut myled(LED1);
+Ticker flipper;
+bool up=true;
+void readBP()
+{
+    float bp=lcd.readButton();
+    if (bp<0.25)
+        up=true;
+    else if (bp<0.5)
+        up=false;
+}
+int main()
+{
+    flipper.attach(&readBP, 0.1);
+    int error = 0;
+    float h = 0.0f, c = 0.0f, f = 0.0f, k = 0.0f, dp = 0.0f, dpf = 0.0f;
+    // turn on the back light (it's off by default)
+    lcd.setBackLight(true);
+    lcd.cls();
+    // print the first line and wait 3 sec
+    lcd.printf("mbed DHT11");
+    wait(3);
+
+    // print the counter prefix; the number will be printed in the while loop
+
+
+
+
+    while (1) {
+
+        error = sensor.readData();
+        if (0 == error) {
+            c   = sensor.ReadTemperature(CELCIUS);
+            f   = sensor.ReadTemperature(FARENHEIT);
+            k   = sensor.ReadTemperature(KELVIN);
+            h   = sensor.ReadHumidity();
+            dp  = sensor.CalcdewPoint(c, h);
+            dpf = sensor.CalcdewPointFast(c, h);
+            if(up==true) {
+                lcd.setCursorPosition(0, 0);
+                lcd.printf("Temperature %4.2f   ",c);
+                lcd.setCursorPosition(1, 0);
+                lcd.printf("Humidity %4.2f   ", h);
+            }
+            if(up==false) {
+
+                lcd.setCursorPosition(0, 0);
+                lcd.printf("Humidity %4.2f   ", h);
+                lcd.setCursorPosition(1, 0);
+                lcd.printf("Dew point %4.2f  ",dp);
+            }
+        } else {
+
+            lcd.setCursorPosition(0, 0);
+            lcd.printf("mbed DHT11     ");
+            lcd.setCursorPosition(1, 0);
+            lcd.printf("Error: %d      ", error);
+        }
+
+
+        wait(0.5f);
+    }
+}
diff -r 000000000000 -r 5e787e0e8ab6 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Feb 24 12:41:17 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/9ad691361fac
\ No newline at end of file