Xiangying Qu
Home Security Device is designed based on FRDM K64f with DHT11, Ultrasonic Ranger, LCD RGB Light, Buzzer, button and Base Shield V2.
Dependencies: mbed Grove_LCD_RGB_Backlight RangeFinder DHT11
Revision 0:89a29cf8b779, committed 2019-03-04
- Comitter:
- qxy
- Date:
- Mon Mar 04 21:22:01 2019 +0000
- Commit message:
- Home Security Device is designed based on FRDM K64f with DHT11, Ultrasonic Ranger, button,buzzer LCD RGB Backlight and Base Shield V2.
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DHT11.lib Mon Mar 04 21:22:01 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/fossum_13/code/DHT11/#5da6f6de3e42
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Grove_LCD_RGB_Backlight.lib Mon Mar 04 21:22:01 2019 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/cmatz3/code/Grove_LCD_RGB_Backlight/#253885b1f364
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/RangeFinder.lib Mon Mar 04 21:22:01 2019 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/NickRyder/code/RangeFinder/#cf496fb70317
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Mar 04 21:22:01 2019 +0000
@@ -0,0 +1,94 @@
+
+#include "mbed.h"
+#include "Dht11.h"
+#include "RangeFinder.h"
+#include "Grove_LCD_RGB_Backlight.h"
+
+RangeFinder rf(D3, 10, 5800.0, 100000);
+DigitalOut led(LED1);
+DigitalOut buzzer(D2);
+InterruptIn button(D6);
+Serial pc(USBTX, USBRX);
+Dht11 dhtSensor(D7);
+
+Grove_LCD_RGB_Backlight rgbLCD(I2C_SDA, I2C_SCL);
+
+
+float temperature = 0.0f;
+float humidity = 0.0f;
+
+int on = 1, off = 0;
+
+void flip()
+ {
+ buzzer = off;
+ }
+
+int main()
+{
+ led = 1;
+ float d;
+
+ rgbLCD.setRGB(0xff, 0xff, 0xff);
+ char szBuff[10];
+
+ button.rise(&flip); // attach the address of the flip function to the rising edge
+
+
+ while(1) {
+ dhtSensor.read();
+ temperature = dhtSensor.getCelsius();
+ humidity = dhtSensor.getHumidity();
+
+ printf("Temp: %f, Hum: %f\n", temperature, humidity);
+
+ rgbLCD.locate(0,0);
+ rgbLCD.print("T:");
+ rgbLCD.locate(2,0);
+ sprintf(szBuff, "%2.1f", temperature);
+ rgbLCD.print(szBuff);
+
+ rgbLCD.locate(8,0);
+ rgbLCD.print("H:");
+ rgbLCD.locate(10,0);
+ sprintf(szBuff, "%2.1f", humidity);
+ rgbLCD.print(szBuff);
+
+ if (temperature >= 25)
+ {
+ buzzer = on;
+ wait(5);
+ buzzer = off;
+ rgbLCD.locate(0,0);
+ rgbLCD.print("T:");
+ rgbLCD.locate(2,0);
+ rgbLCD.print(is over 25);
+ }
+
+ wait(1);
+
+
+ d = rf.read_m();
+ if (d == -1.0) {
+ printf("Timeout Error.\n");
+ } else if (d > 5.0) {
+ // Seeed's sensor has a maximum range of 4m, it returns
+ // something like 7m if the ultrasound pulse isn't reflected.
+ printf("No object within detection range.\n");
+ rgbLCD.locate(0,1);
+ rgbLCD.print("No object");
+
+ } else {
+ printf("Detecting object within detection range.\n");
+ rgbLCD.locate(0,1);
+ rgbLCD.print("Detected");
+ printf("Distance = %f m.\n", d);
+ buzzer = on;
+ wait(5);
+ buzzer = off;
+ }
+ wait(0.5);
+ led = !led;
+
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Mar 04 21:22:01 2019 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file