Kun Qian / Mbed 2 deprecated Temperature

Project D weather station

Dependencies:   BMP180 N5110 mbed

main.cpp@0:35d7d920fbc9, 2015-05-07 (annotated)

Committer:
qk2277
Date:
Thu May 07 16:14:42 2015 +0000
Revision:
0:35d7d920fbc9
the first version of my project

Who changed what in which revision?

UserRevisionLine numberNew contents of line
qk2277 0:35d7d920fbc9 1 /**
qk2277 0:35d7d920fbc9 2 @Project A Weather Station
qk2277 0:35d7d920fbc9 3 @Measure the current environment temperature and pressure
qk2277 0:35d7d920fbc9 4 @file main.cpp
qk2277 0:35d7d920fbc9 5 @brief header file containing function prototypes, defines and global variables
qk2277 0:35d7d920fbc9 6 @auther Kun Qian
qk2277 0:35d7d920fbc9 7 @data 07/05/2015
qk2277 0:35d7d920fbc9 8 */
qk2277 0:35d7d920fbc9 9
qk2277 0:35d7d920fbc9 10
qk2277 0:35d7d920fbc9 11 #include "mbed.h"
qk2277 0:35d7d920fbc9 12 #include "BMP180.h"
qk2277 0:35d7d920fbc9 13 #include "N5110.h"
qk2277 0:35d7d920fbc9 14
qk2277 0:35d7d920fbc9 15 /**
qk2277 0:35d7d920fbc9 16 @namespace lcd
qk2277 0:35d7d920fbc9 17 @namespace BMP180
qk2277 0:35d7d920fbc9 18 @namespace mbed
qk2277 0:35d7d920fbc9 19 */
qk2277 0:35d7d920fbc9 20
qk2277 0:35d7d920fbc9 21
qk2277 0:35d7d920fbc9 22 N5110 lcd(p7,p8,p9,p10,p11,p13,p26);//The ports being connected of the mbed
qk2277 0:35d7d920fbc9 23 BusOut leds(LED4,LED3,LED2,LED1);//The ports being connected of the LCD
qk2277 0:35d7d920fbc9 24 BMP180 bmp180(p28,p27);//The ports being connected to the sensor
qk2277 0:35d7d920fbc9 25 Serial serial(USBTX,USBRX);//Timer set-up tool
qk2277 0:35d7d920fbc9 26
qk2277 0:35d7d920fbc9 27 /**
qk2277 0:35d7d920fbc9 28 Define the variable will be used in the programming
qk2277 0:35d7d920fbc9 29 */
qk2277 0:35d7d920fbc9 30
qk2277 0:35d7d920fbc9 31 void serialISR();//ISR that is called when serial data is received
qk2277 0:35d7d920fbc9 32 void setTime();// function to set the UNIX time
qk2277 0:35d7d920fbc9 33 int setTimerFlag = 0;// flag for ISR
qk2277 0:35d7d920fbc9 34 char rxString[16];//Create a 16 chars row to display the data
qk2277 0:35d7d920fbc9 35
qk2277 0:35d7d920fbc9 36 /**
qk2277 0:35d7d920fbc9 37 Set up a project title before the data shows on the LCD
qk2277 0:35d7d920fbc9 38 */
qk2277 0:35d7d920fbc9 39 int main()
qk2277 0:35d7d920fbc9 40 {
qk2277 0:35d7d920fbc9 41 lcd.init();
qk2277 0:35d7d920fbc9 42 bmp180.init();//Display the word before the sensor data
qk2277 0:35d7d920fbc9 43 lcd.printString("Weather",0,0);//At the location (0,0),display word "Weather"
qk2277 0:35d7d920fbc9 44 lcd.printString("Station",1,3);//At the location (1,3),display word "Station"
qk2277 0:35d7d920fbc9 45 wait(2.0);//The word above stay for 2s
qk2277 0:35d7d920fbc9 46 lcd.clear();//Clean the display for the continued work
qk2277 0:35d7d920fbc9 47
qk2277 0:35d7d920fbc9 48 /**
qk2277 0:35d7d920fbc9 49 Start the measuremrnt progressing
qk2277 0:35d7d920fbc9 50 */
qk2277 0:35d7d920fbc9 51 Measurement measurement;
qk2277 0:35d7d920fbc9 52
qk2277 0:35d7d920fbc9 53 serial.attach(&serialISR);//attach serial ISR
qk2277 0:35d7d920fbc9 54 char t[30];//Create a 30 chars row to display the time
qk2277 0:35d7d920fbc9 55
qk2277 0:35d7d920fbc9 56 /**
qk2277 0:35d7d920fbc9 57 Create the row for the timer and ensure the location of it
qk2277 0:35d7d920fbc9 58 */
qk2277 0:35d7d920fbc9 59 while(1) {
qk2277 0:35d7d920fbc9 60
qk2277 0:35d7d920fbc9 61 time_t seconds = time(NULL);//get current time
qk2277 0:35d7d920fbc9 62 // format time into a string (time and date)
qk2277 0:35d7d920fbc9 63 strftime(t, 30 , "%X %D",localtime(&seconds));//
qk2277 0:35d7d920fbc9 64 // print over serial
qk2277 0:35d7d920fbc9 65 serial.printf("Time = %s\n" ,t);//Display the timer
qk2277 0:35d7d920fbc9 66 lcd.printString(t,0,5);//The location of the timer
qk2277 0:35d7d920fbc9 67
qk2277 0:35d7d920fbc9 68 if(setTimerFlag) {// if updated time has been sent
qk2277 0:35d7d920fbc9 69 setTimerFlag = 0;//clear flag
qk2277 0:35d7d920fbc9 70 setTime();// update time
qk2277 0:35d7d920fbc9 71
qk2277 0:35d7d920fbc9 72 }
qk2277 0:35d7d920fbc9 73
qk2277 0:35d7d920fbc9 74 /**
qk2277 0:35d7d920fbc9 75 Display the data measure by the sensor and show on the LCD
qk2277 0:35d7d920fbc9 76 Enbsure the form and location of it
qk2277 0:35d7d920fbc9 77 */
qk2277 0:35d7d920fbc9 78 measurement = bmp180.readValues();//
qk2277 0:35d7d920fbc9 79 char T[14];//Create a 14 chars row to display the temperature
qk2277 0:35d7d920fbc9 80 int length =sprintf(T,"T = %.2f C",measurement.temperature);//Set up "T = sensor data" as the thing will be shown
qk2277 0:35d7d920fbc9 81 if (length <= 14)//Judge the length of chars
qk2277 0:35d7d920fbc9 82 lcd.printString(T,0,1);//The location of the T will be shown
qk2277 0:35d7d920fbc9 83 char P[14];//Create a 14 chars row to display the pressure
qk2277 0:35d7d920fbc9 84 length = sprintf(P,"P = %.2f mb",measurement.pressure);//Set up "P = sensor data" as the thing will be shown
qk2277 0:35d7d920fbc9 85 lcd.printString(P,0,3); //The location of the P will be shown
qk2277 0:35d7d920fbc9 86 wait(1);//Repeat the circulate each 1s
qk2277 0:35d7d920fbc9 87 lcd.clear(); //Clear the data for next processing
qk2277 0:35d7d920fbc9 88 }
qk2277 0:35d7d920fbc9 89 }
qk2277 0:35d7d920fbc9 90
qk2277 0:35d7d920fbc9 91 /**
qk2277 0:35d7d920fbc9 92 Create a string to the interge and set the current time
qk2277 0:35d7d920fbc9 93 */
qk2277 0:35d7d920fbc9 94 void setTime()//// print time for debugging
qk2277 0:35d7d920fbc9 95 {
qk2277 0:35d7d920fbc9 96
qk2277 0:35d7d920fbc9 97 serial.printf("set_time - %s",rxString);
qk2277 0:35d7d920fbc9 98 //// atoi() converts a string to an integer
qk2277 0:35d7d920fbc9 99 int time = atoi(rxString);
qk2277 0:35d7d920fbc9 100 //update the time
qk2277 0:35d7d920fbc9 101 set_time(time);
qk2277 0:35d7d920fbc9 102 }
qk2277 0:35d7d920fbc9 103 /**
qk2277 0:35d7d920fbc9 104 When the serial interrupt occurs, read rs string either
qk2277 0:35d7d920fbc9 105 */
qk2277 0:35d7d920fbc9 106 void serialISR()// when a serial interrupt occurs, read rx string into buffer
qk2277 0:35d7d920fbc9 107 {
qk2277 0:35d7d920fbc9 108
qk2277 0:35d7d920fbc9 109 serial.gets(rxString,16);
qk2277 0:35d7d920fbc9 110 //// set flag
qk2277 0:35d7d920fbc9 111 setTimerFlag = 1;
qk2277 0:35d7d920fbc9 112 }