Diff: main.cpp

Revision:

0:d147c974627d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 07 15:51:42 2015 +0000
@@ -0,0 +1,125 @@
+/**
+@Header file name.h
+@Project-D Weather Station
+@file main.cpp
+@author Li XingYu
+@date May 2015
+*/
+
+#include "mbed.h"
+#include "N5110.h"
+#include "BMP180.h"
+
+/**
+@namespace lcd,bmp180,serial
+@brief serial connects to micro-controller
+@brief
+*/
+
+//The pins of N5110, BMP180 which are connected to micro-controller
+N5110 lcd(p7,p8,p9,p10,p11,p13,p22);
+BMP180 bmp180(p28,p27);
+Serial serial(USBTX,USBRX);// The tool which sets the date
+
+/**
+add up one integer variable
+@param setTimerFlag - integer to add
+creat two functions
+@param serialISR - function to add
+@param setTime - function to add
+*/
+void serialISR();// ISR that is called when serial data is received
+void setTime();// function to set the UNIX time
+int setTimerFlag = 0;// flag for ISR
+
+char rxString[16];// buffer to store received string
+
+
+/**
+@Boot Screen
+Sset Brightness
+@Set date
+@Connect LCD and sensor to micro-controller
+@Display temperature and pressure
+*/
+
+int main()
+{
+
+    lcd.init();
+    //Boot Screen
+    lcd.printString("Project-D",2,1);//First line and coordinate
+    lcd.printString("Weather",2,2);//Second line and coordinate
+    lcd.printString("station",2,3);//Third line and coordinate
+    wait(2.0);//Wait 2 secs and turn into next interface
+    lcd.clear();//Clear
+    lcd.setBrightness(0.1);//Screen Brightness
+    bmp180.init();
+    Measurement measurement;
+    //RTC
+    serial.attach(&serialISR);//Set the time
+    char t[30];//array to t
+    while(1) {
+        time_t seconds = time(NULL);
+
+        strftime(t, 30 , "%X %D",localtime(&seconds));//The form of date
+
+        serial.printf("Time = %s\n" ,t);// The form of date displaying on the screen
+        lcd.printString(t,0,5);//The coordinate of date
+        wait(1.0);
+        if(setTimerFlag) // if updated time has been sent
+        {
+            setTimerFlag = 0;// clear flag
+            setTime(); // update time
+
+        }
+
+
+        measurement = bmp180.readValues();// The values received by BMP180
+        char buffer[14];//array for buffer
+        int length = sprintf(buffer,"T= %.2f C",measurement.temperature);//Thr form of values of temperature
+        if(length<=14)//If less than 14 words a line
+            lcd.printString(buffer,0,1); // The coordinate of date
+        char buffer2[14];//14 words a line
+        length =sprintf(buffer2,"P = %.2f mb",measurement.pressure);//The form of values of pressure
+        if(length<=14)//If less than 14 words a line
+            lcd.printString(buffer2,0,2); //The coordinate of values
+        wait(1.0);//wait 1 sec
+    }
+
+
+
+}
+
+/**
+add up one integer variable
+@setTime - print it for debugging
+@timeflag - read rx string into buffer
+@param time - integer to add
+@atoi - update the time
+*/
+
+void setTime()// print time for debugging
+{
+    serial.printf("set_time - %s",rxString);// atoi() converts a string to an integer
+
+    int time = atoi(rxString);// update the time
+
+    set_time(time);
+}
+
+void serialISR()
+{
+    // when a serial interrupt occurs, read rx string into buffer
+    serial.gets(rxString,16);
+    // set flag
+    setTimerFlag = 1;
+}
+
+
+
+
+
+
+
+