Oliver Thompson / Mbed OS ELEC351-Coursework

Repo. for the ELEC351 Coursework - Oliver Thompson

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

LCD.hpp@20:2ce28a5032d5, 2019-01-02 (annotated)

Committer:
O_Thom
Date:
Wed Jan 02 12:12:30 2019 +0000
Revision:
20:2ce28a5032d5
Parent:
19:c3b396b65f2a 
Serial Messaging Complete - SD Class need to handle commands. LCD and Networking Time and Date Update Needs Testing.

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"
O_Thom 19:c3b396b65f2a 6 #include "Network.hpp"
O_Thom 19:c3b396b65f2a 7 #include <stdio.h>
O_Thom 19:c3b396b65f2a 8 #include <string.h>
O_Thom 19:c3b396b65f2a 9
O_Thom 20:2ce28a5032d5 10 Mail<time_and_date,5> Serial2LCD; // Serial -> LCD Mailbox 5 Elements Wide Time&Date
O_Thom 9:654e14de9d74 11
O_Thom 6:b7f6e0c0f646 12 class LCD_Data
O_Thom 5:f87129ac8bf3 13 {
O_Thom 19:c3b396b65f2a 14 friend class Network;
O_Thom 19:c3b396b65f2a 15
O_Thom 19:c3b396b65f2a 16 private: //private variables can only be changed via functions in this class
O_Thom 6:b7f6e0c0f646 17 float temp; //current temperature of sensor, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 18 float pressure; //current pressure of sensor, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 19 float fLDR; //current light level from LDR, updated every 15 seconds
O_Thom 6:b7f6e0c0f646 20 int flip;
O_Thom 19:c3b396b65f2a 21 string day;
O_Thom 19:c3b396b65f2a 22 string month;
O_Thom 19:c3b396b65f2a 23 string date;
O_Thom 19:c3b396b65f2a 24 string time;
O_Thom 19:c3b396b65f2a 25 string year;
O_Thom 19:c3b396b65f2a 26
O_Thom 19:c3b396b65f2a 27
O_Thom 19:c3b396b65f2a 28 private:
O_Thom 19:c3b396b65f2a 29 struct tm Time_Date; //decale instance Time_Date of structure tm which is defined by mbed / C
O_Thom 19:c3b396b65f2a 30
O_Thom 6:b7f6e0c0f646 31
O_Thom 6:b7f6e0c0f646 32 void update_temp(double t) //use this function to update the current temperature value
O_Thom 6:b7f6e0c0f646 33 {
O_Thom 6:b7f6e0c0f646 34 temp = t;
O_Thom 6:b7f6e0c0f646 35 }
O_Thom 6:b7f6e0c0f646 36 void update_pressure(double p) //use this function to update the current pressure value
O_Thom 6:b7f6e0c0f646 37 {
O_Thom 6:b7f6e0c0f646 38 pressure = p;
O_Thom 6:b7f6e0c0f646 39 }
O_Thom 6:b7f6e0c0f646 40 void update_LDR(double L)
O_Thom 6:b7f6e0c0f646 41 {
O_Thom 6:b7f6e0c0f646 42 fLDR = L;
O_Thom 6:b7f6e0c0f646 43 }
O_Thom 6:b7f6e0c0f646 44
O_Thom 19:c3b396b65f2a 45
O_Thom 19:c3b396b65f2a 46
O_Thom 5:f87129ac8bf3 47 public:
O_Thom 19:c3b396b65f2a 48
O_Thom 5:f87129ac8bf3 49 EventQueue LCD_Queue; //create an event queue for main
O_Thom 19:c3b396b65f2a 50 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);
O_Thom 19:c3b396b65f2a 51
O_Thom 20:2ce28a5032d5 52
O_Thom 20:2ce28a5032d5 53 void getSerial2LCD() // Queue Consumer
O_Thom 20:2ce28a5032d5 54 {
O_Thom 20:2ce28a5032d5 55 if (!Serial2LCD.empty())
O_Thom 20:2ce28a5032d5 56 {
O_Thom 20:2ce28a5032d5 57 osEvent evt = Serial2LCD.get();
O_Thom 20:2ce28a5032d5 58 switch (evt.status)
O_Thom 20:2ce28a5032d5 59 {
O_Thom 20:2ce28a5032d5 60 case osEventMail:
O_Thom 20:2ce28a5032d5 61 //Normal status
O_Thom 20:2ce28a5032d5 62 time_and_date *time_copy = (time_and_date*)evt.value.p;
O_Thom 20:2ce28a5032d5 63 time = time_copy->current_time; // Update the internal clock
O_Thom 20:2ce28a5032d5 64 Serial2Net.free(time_copy); // Free up the space in the memory Pool
O_Thom 20:2ce28a5032d5 65 default:
O_Thom 20:2ce28a5032d5 66 //All other errors (see cmsis_os.h for meaning of error code)
O_Thom 20:2ce28a5032d5 67 //printf("Serial2Net->get() returned %02x status\n\r", evt.status);
O_Thom 20:2ce28a5032d5 68 }
O_Thom 20:2ce28a5032d5 69 }
O_Thom 20:2ce28a5032d5 70 }
O_Thom 20:2ce28a5032d5 71
O_Thom 11:b8e8630c7e3b 72
O_Thom 5:f87129ac8bf3 73 LCD_Data(){ //constructor, initializes the FLIP variable for use in toggling the bottom line of the LCD
O_Thom 5:f87129ac8bf3 74 flip = 1;
O_Thom 6:b7f6e0c0f646 75 temp = 0;
O_Thom 6:b7f6e0c0f646 76 pressure = 0;
O_Thom 6:b7f6e0c0f646 77 fLDR = 0;
O_Thom 19:c3b396b65f2a 78
O_Thom 19:c3b396b65f2a 79
O_Thom 5:f87129ac8bf3 80 }
O_Thom 10:08c366434f2b 81
O_Thom 19:c3b396b65f2a 82
O_Thom 19:c3b396b65f2a 83
O_Thom 6:b7f6e0c0f646 84 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 85 {
O_Thom 6:b7f6e0c0f646 86 update_temp(msg.temp); // Include message class passing of data
O_Thom 6:b7f6e0c0f646 87 update_pressure(msg.pressure);
O_Thom 6:b7f6e0c0f646 88 update_LDR(msg.ldr);
O_Thom 5:f87129ac8bf3 89 }
O_Thom 19:c3b396b65f2a 90
O_Thom 19:c3b396b65f2a 91
O_Thom 19:c3b396b65f2a 92
O_Thom 19:c3b396b65f2a 93
O_Thom 5:f87129ac8bf3 94 void display_LCD() //updates the current LCD display with the new sensor information
O_Thom 5:f87129ac8bf3 95 {
O_Thom 5:f87129ac8bf3 96 lcd.cls(); //clear current LCD display
O_Thom 19:c3b396b65f2a 97
O_Thom 5:f87129ac8bf3 98 lcd.printf("%4.2fC", temp); //print temperature to the top line of LCD, 2dp celcius
O_Thom 19:c3b396b65f2a 99
O_Thom 19:c3b396b65f2a 100
O_Thom 5:f87129ac8bf3 101 switch(flip){
O_Thom 5:f87129ac8bf3 102 case 1:
O_Thom 5:f87129ac8bf3 103 lcd.printf("\n%4.2f mbar", pressure); //print pressure to bottom line of LCD, 2dp mbar
O_Thom 6:b7f6e0c0f646 104 flip = 2;
O_Thom 6:b7f6e0c0f646 105 break;
O_Thom 6:b7f6e0c0f646 106 case 2:
O_Thom 6:b7f6e0c0f646 107 lcd.printf("\n%4.2f Lux", fLDR); //print pressure to bottom line of LCD, 2dp mbar
O_Thom 6:b7f6e0c0f646 108 flip = 1;
O_Thom 19:c3b396b65f2a 109 break;
O_Thom 19:c3b396b65f2a 110 case 3: //only ever called when the interupt button is pressed to update time
O_Thom 19:c3b396b65f2a 111 lcd.printf("\nTime updated"); //informs the user the current time has been set
O_Thom 19:c3b396b65f2a 112 printf("Current time is %s\r\n", ctime(&timestamp)); //prints current time and date in human readable time to terminal
O_Thom 19:c3b396b65f2a 113 flip = 1;
O_Thom 19:c3b396b65f2a 114 break;
O_Thom 6:b7f6e0c0f646 115 default:
O_Thom 5:f87129ac8bf3 116 printf("Error in LCD flip function");
O_Thom 5:f87129ac8bf3 117 break;
O_Thom 5:f87129ac8bf3 118 }
O_Thom 19:c3b396b65f2a 119 }
O_Thom 19:c3b396b65f2a 120
O_Thom 19:c3b396b65f2a 121
O_Thom 19:c3b396b65f2a 122
O_Thom 19:c3b396b65f2a 123 time_and_date update_time_date (){
O_Thom 19:c3b396b65f2a 124
O_Thom 19:c3b396b65f2a 125 timestamp = ntp.get_timestamp(); //reads the current time from a local NTP server in UNIX format
O_Thom 19:c3b396b65f2a 126
O_Thom 19:c3b396b65f2a 127 string current_time = ctime(&timestamp); //converts time to human readable format string
O_Thom 19:c3b396b65f2a 128
O_Thom 10:08c366434f2b 129
O_Thom 19:c3b396b65f2a 130
O_Thom 19:c3b396b65f2a 131 day.assign(current_time, 0, 3); //extract only day from current_time string
O_Thom 19:c3b396b65f2a 132 month.assign(current_time, 4, 3); //extract only month from ""
O_Thom 19:c3b396b65f2a 133 date.assign(current_time, 9, 1); //extract only date from ""
O_Thom 19:c3b396b65f2a 134 time.assign(current_time, 11, 8); //extract only time from ""
O_Thom 19:c3b396b65f2a 135 year.assign(current_time, 20, 4); //extract only year from ""
O_Thom 19:c3b396b65f2a 136
O_Thom 19:c3b396b65f2a 137
O_Thom 19:c3b396b65f2a 138 //printf("current day is: %s\n", day);
O_Thom 20:2ce28a5032d5 139 // printf("current year is: %s\n", year);
O_Thom 20:2ce28a5032d5 140 // printf("current time is: %s\n", time);
O_Thom 20:2ce28a5032d5 141 // printf("current date is: %s\n", date);
O_Thom 19:c3b396b65f2a 142 // printf("current month is: %s\n", month);
O_Thom 19:c3b396b65f2a 143
O_Thom 19:c3b396b65f2a 144
O_Thom 19:c3b396b65f2a 145
O_Thom 19:c3b396b65f2a 146 m_oNet.Network_Queue.call(&m_oNet, &Network::update_Time, current_time);
O_Thom 19:c3b396b65f2a 147
O_Thom 19:c3b396b65f2a 148 time_and_date Timemsg; // Define instance of message structure
O_Thom 20:2ce28a5032d5 149 Timemsg.day = day;
O_Thom 20:2ce28a5032d5 150 Timemsg.month = month;
O_Thom 20:2ce28a5032d5 151 Timemsg.date = date;
O_Thom 20:2ce28a5032d5 152 Timemsg.time = time;
O_Thom 20:2ce28a5032d5 153 Timemsg.year = year;
O_Thom 20:2ce28a5032d5 154 Timemsg.current_time = current_time;
O_Thom 19:c3b396b65f2a 155
O_Thom 19:c3b396b65f2a 156 flip = 3; //will tell the user that the time has been updated on next FLIP instance with the LCD
O_Thom 19:c3b396b65f2a 157
O_Thom 19:c3b396b65f2a 158 return Timemsg; //swap this for a function that sends the structure to ollie?
O_Thom 19:c3b396b65f2a 159
O_Thom 19:c3b396b65f2a 160 }
O_Thom 19:c3b396b65f2a 161
O_Thom 19:c3b396b65f2a 162
O_Thom 19:c3b396b65f2a 163 }; //end of LCD class
O_Thom 19:c3b396b65f2a 164
O_Thom 19:c3b396b65f2a 165 // Define the member object for the LCD
O_Thom 19:c3b396b65f2a 166 LCD_Data m_oDisplay;
O_Thom 20:2ce28a5032d5 167 #endif
O_Thom 20:2ce28a5032d5 168
O_Thom 20:2ce28a5032d5 169