frederic blanc
DHT11 and LCD, humidity, temperature, dew point
Dependencies: Freetronics_16x2_LCD mbed
Revision 0:5e787e0e8ab6, committed 2015-02-24
- Comitter:
- fblanc
- Date:
- Tue Feb 24 12:41:17 2015 +0000
- Commit message:
- test ST nucleo L152RE OK
Changed in this revision
--- /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
--- /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
--- /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);
+ }
+}
--- /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