Alix Germany / Mbed OS Coursework_Version_8

Version 8, working version with Alix, sams and ollies code. Displays time, date and sensor info onto terminal, LCD and networking, and saves onto SD card.

Dependencies:   BMP280 ELEC350-Practicals-FZ429 TextLCD BME280 ntp-client

LCD.hpp@9:f5eae5211225, 2018-12-07 (annotated)

Committer:
Alix955
Date:
Fri Dec 07 13:24:50 2018 +0000
Revision:
9:f5eae5211225
Parent:
6:b7f6e0c0f646
Child:
10:eea19f8e6122
Version 5, mine & sams versions merged

Who changed what in which revision?

UserRevisionLine numberNew contents of line
O_Thom 6:b7f6e0c0f646 1 #ifndef _LCD_
O_Thom 6:b7f6e0c0f646 2 #define _LCD_
O_Thom 6:b7f6e0c0f646 3 #include "mbed.h"
O_Thom 6:b7f6e0c0f646 4 #include "messageStruct.hpp"
O_Thom 6:b7f6e0c0f646 5 #include "sample_hardware.hpp"
Alix955 9:f5eae5211225 6 #include "Network.hpp"
Alix955 9:f5eae5211225 7
Alix955 9:f5eae5211225 8
O_Thom 6:b7f6e0c0f646 9 class LCD_Data
O_Thom 5:f87129ac8bf3 10 {
Alix955 9:f5eae5211225 11 friend class Network;
Alix955 9:f5eae5211225 12
Alix955 9:f5eae5211225 13 private: //private variables can only be changed via functions in this class
O_Thom 6:b7f6e0c0f646 14 float temp; //current temperature of sensor, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 15 float pressure; //current pressure of sensor, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 16 float fLDR; //current light level from LDR, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 17 int flip;
O_Thom 6:b7f6e0c0f646 18
Alix955 9:f5eae5211225 19
Alix955 9:f5eae5211225 20 private:
Alix955 9:f5eae5211225 21 struct tm Time_Date; //decale instance Time_Date of structure tm which is defined by mbed / C
Alix955 9:f5eae5211225 22
Alix955 9:f5eae5211225 23
O_Thom 6:b7f6e0c0f646 24 void update_temp(double t) //use this function to update the current temperature value
O_Thom 6:b7f6e0c0f646 25 {
O_Thom 6:b7f6e0c0f646 26 temp = t;
O_Thom 6:b7f6e0c0f646 27 }
O_Thom 6:b7f6e0c0f646 28 void update_pressure(double p) //use this function to update the current pressure value
O_Thom 6:b7f6e0c0f646 29 {
O_Thom 6:b7f6e0c0f646 30 pressure = p;
O_Thom 6:b7f6e0c0f646 31 }
O_Thom 6:b7f6e0c0f646 32 void update_LDR(double L)
O_Thom 6:b7f6e0c0f646 33 {
O_Thom 6:b7f6e0c0f646 34 fLDR = L;
O_Thom 6:b7f6e0c0f646 35 }
O_Thom 6:b7f6e0c0f646 36
Alix955 9:f5eae5211225 37
Alix955 9:f5eae5211225 38
O_Thom 5:f87129ac8bf3 39 public:
Alix955 9:f5eae5211225 40
O_Thom 5:f87129ac8bf3 41 EventQueue LCD_Queue; //create an event queue for main
Alix955 9:f5eae5211225 42 time_t timestamp; //current time in format of unix time, can be converted to DAY_OF_WEEK MONTH DAY HOUR:MINUTE:SECOND YEAR using ctime(&timestamp);
Alix955 9:f5eae5211225 43
Alix955 9:f5eae5211225 44
Alix955 9:f5eae5211225 45
O_Thom 5:f87129ac8bf3 46 LCD_Data(){ //constructor, initializes the FLIP variable for use in toggling the bottom line of the LCD
O_Thom 5:f87129ac8bf3 47 flip = 1;
O_Thom 6:b7f6e0c0f646 48 temp = 0;
O_Thom 6:b7f6e0c0f646 49 pressure = 0;
O_Thom 6:b7f6e0c0f646 50 fLDR = 0;
Alix955 9:f5eae5211225 51
Alix955 9:f5eae5211225 52
O_Thom 5:f87129ac8bf3 53 }
Alix955 9:f5eae5211225 54
Alix955 9:f5eae5211225 55
Alix955 9:f5eae5211225 56
O_Thom 6:b7f6e0c0f646 57 void update_sensor_info(sample_message msg) //updates all current sensor information, this is called by a ticker every 5 seconds to read from the mailbox
O_Thom 5:f87129ac8bf3 58 {
O_Thom 6:b7f6e0c0f646 59 update_temp(msg.temp); // Include message class passing of data
O_Thom 6:b7f6e0c0f646 60 update_pressure(msg.pressure);
O_Thom 6:b7f6e0c0f646 61 update_LDR(msg.ldr);
O_Thom 5:f87129ac8bf3 62 }
Alix955 9:f5eae5211225 63
Alix955 9:f5eae5211225 64
Alix955 9:f5eae5211225 65
Alix955 9:f5eae5211225 66
O_Thom 5:f87129ac8bf3 67 void display_LCD() //updates the current LCD display with the new sensor information
O_Thom 5:f87129ac8bf3 68 {
O_Thom 5:f87129ac8bf3 69 lcd.cls(); //clear current LCD display
Alix955 9:f5eae5211225 70
O_Thom 5:f87129ac8bf3 71 lcd.printf("%4.2fC", temp); //print temperature to the top line of LCD, 2dp celcius
Alix955 9:f5eae5211225 72
Alix955 9:f5eae5211225 73
O_Thom 5:f87129ac8bf3 74 switch(flip){
O_Thom 5:f87129ac8bf3 75 case 1:
O_Thom 5:f87129ac8bf3 76 lcd.printf("\n%4.2f mbar", pressure); //print pressure to bottom line of LCD, 2dp mbar
O_Thom 6:b7f6e0c0f646 77 flip = 2;
O_Thom 6:b7f6e0c0f646 78 break;
O_Thom 6:b7f6e0c0f646 79 case 2:
O_Thom 6:b7f6e0c0f646 80 lcd.printf("\n%4.2f Lux", fLDR); //print pressure to bottom line of LCD, 2dp mbar
O_Thom 6:b7f6e0c0f646 81 flip = 1;
Alix955 9:f5eae5211225 82 break;
Alix955 9:f5eae5211225 83 case 3: //only ever called when the interupt button is pressed to update time
Alix955 9:f5eae5211225 84 lcd.printf("\nTime updated"); //informs the user the current time has been set
Alix955 9:f5eae5211225 85 printf("Current time is %s\r\n", ctime(&timestamp)); //prints current time and date in human readable time to terminal
Alix955 9:f5eae5211225 86 flip = 1;
Alix955 9:f5eae5211225 87 break;
O_Thom 6:b7f6e0c0f646 88 default:
O_Thom 5:f87129ac8bf3 89 printf("Error in LCD flip function");
O_Thom 5:f87129ac8bf3 90 break;
O_Thom 5:f87129ac8bf3 91 }
O_Thom 5:f87129ac8bf3 92 }
Alix955 9:f5eae5211225 93
Alix955 9:f5eae5211225 94
Alix955 9:f5eae5211225 95
Alix955 9:f5eae5211225 96 void update_time_date (){
Alix955 9:f5eae5211225 97 timestamp = ntp.get_timestamp();
Alix955 9:f5eae5211225 98 //timestamp = Network::ntp.get_timestamp(); //gets current time and date from NTP server in unix format
Alix955 9:f5eae5211225 99 // timestamp = m_oNet.ntp.get_timestamp(); //gets current time and date from NTP server in unix format
Alix955 9:f5eae5211225 100
Alix955 9:f5eae5211225 101 flip = 3; //will tell the user that the time has been updated on next FLIP instance
Alix955 9:f5eae5211225 102
Alix955 9:f5eae5211225 103 }
Alix955 9:f5eae5211225 104
Alix955 9:f5eae5211225 105
Alix955 9:f5eae5211225 106 }; //end of LCD class
Alix955 9:f5eae5211225 107
Alix955 9:f5eae5211225 108
Alix955 9:f5eae5211225 109
O_Thom 6:b7f6e0c0f646 110 // Define the member object for the LCD
O_Thom 5:f87129ac8bf3 111 LCD_Data m_oDisplay;
O_Thom 6:b7f6e0c0f646 112 #endif