Augustine Kizito / Mbed 2 deprecated Solar_Powered_Smart_Camera

This program consists of the software developed for the ELEC5870M Individual Project. It runs on the mbed LPC1768. It uses the mbed RTOS to perform the following tasks: - Implements intuitive GUI with buttons, LCD TFT Display and LEDs. - Serial Communication with the RPi - I2C communication with INA219 voltage current sensors - Power control at the USB ports

Dependencies:   Adafruit_GFX Adafruit_ST7735 INA219 MODSERIAL MbedJSONValue mbed-rtos mbed

Screens/SolarScreen.h@3:7666de697752, 2017-02-04 (annotated)

Committer:
OHstin
Date:
Sat Feb 04 20:17:44 2017 +0000
Revision:
3:7666de697752
This version before adding serial communication and pathways

Who changed what in which revision?

UserRevisionLine numberNew contents of line
OHstin 3:7666de697752 1 #ifndef SOLARSCREEN_H
OHstin 3:7666de697752 2 #define SOLARSCREEN_H
OHstin 3:7666de697752 3
OHstin 3:7666de697752 4 #include "ListController.h"
OHstin 3:7666de697752 5
OHstin 3:7666de697752 6 class SolarScreen: public Button <SolarScreen>
OHstin 3:7666de697752 7 {
OHstin 3:7666de697752 8
OHstin 3:7666de697752 9 public:
OHstin 3:7666de697752 10 SolarScreen(uint16_t backgroundColor);
OHstin 3:7666de697752 11 int start();
OHstin 3:7666de697752 12 void buttonPressed(int button);
OHstin 3:7666de697752 13
OHstin 3:7666de697752 14 private:
OHstin 3:7666de697752 15
OHstin 3:7666de697752 16 void drawSolarScreen();
OHstin 3:7666de697752 17 void drawTile();
OHstin 3:7666de697752 18 void updateTile();
OHstin 3:7666de697752 19 //void deAllocateMemory();
OHstin 3:7666de697752 20 void drawWattage(float wattage, uint16_t color);
OHstin 3:7666de697752 21
OHstin 3:7666de697752 22 int changeScreen;
OHstin 3:7666de697752 23 float previousWattage;
OHstin 3:7666de697752 24
OHstin 3:7666de697752 25 ListController *list; // manages the list
OHstin 3:7666de697752 26 bool scroll; // updated when a scroll event occurs
OHstin 3:7666de697752 27 bool enter; // updated when an enter event occurs
OHstin 3:7666de697752 28 uint16_t bgColor; // background color
OHstin 3:7666de697752 29
OHstin 3:7666de697752 30
OHstin 3:7666de697752 31
OHstin 3:7666de697752 32 };
OHstin 3:7666de697752 33
OHstin 3:7666de697752 34
OHstin 3:7666de697752 35 SolarScreen::SolarScreen(uint16_t backgroundColor)
OHstin 3:7666de697752 36 {
OHstin 3:7666de697752 37
OHstin 3:7666de697752 38 bgColor = backgroundColor;
OHstin 3:7666de697752 39 }
OHstin 3:7666de697752 40
OHstin 3:7666de697752 41 int SolarScreen::start(){
OHstin 3:7666de697752 42
OHstin 3:7666de697752 43 previousWattage = -1;
OHstin 3:7666de697752 44
OHstin 3:7666de697752 45 // attach interrupts to buttons
OHstin 3:7666de697752 46 Button<SolarScreen>::activateButtons(this);
OHstin 3:7666de697752 47
OHstin 3:7666de697752 48 // draw the screen
OHstin 3:7666de697752 49 drawSolarScreen();
OHstin 3:7666de697752 50
OHstin 3:7666de697752 51
OHstin 3:7666de697752 52 changeScreen = 0;
OHstin 3:7666de697752 53 scroll = false;
OHstin 3:7666de697752 54 enter = false;
OHstin 3:7666de697752 55
OHstin 3:7666de697752 56
OHstin 3:7666de697752 57
OHstin 3:7666de697752 58 while (changeScreen == 0){
OHstin 3:7666de697752 59 updateTile();
OHstin 3:7666de697752 60
OHstin 3:7666de697752 61 // scroll event occured
OHstin 3:7666de697752 62 if (scroll) {
OHstin 3:7666de697752 63 // perform scroll on the list
OHstin 3:7666de697752 64 list->scroll();
OHstin 3:7666de697752 65 // reset variable
OHstin 3:7666de697752 66 scroll = false;
OHstin 3:7666de697752 67 }
OHstin 3:7666de697752 68
OHstin 3:7666de697752 69 // enter event occured
OHstin 3:7666de697752 70 if (enter) {
OHstin 3:7666de697752 71 // read the current option on the list
OHstin 3:7666de697752 72 changeScreen = list->getCurrentOption();
OHstin 3:7666de697752 73 }
OHstin 3:7666de697752 74 //wait_ms(500);
OHstin 3:7666de697752 75 Thread::wait(200);
OHstin 3:7666de697752 76 }
OHstin 3:7666de697752 77
OHstin 3:7666de697752 78 // relese memory occupied by list controller
OHstin 3:7666de697752 79 delete list;
OHstin 3:7666de697752 80
OHstin 3:7666de697752 81 // dettach interrupts to buttons
OHstin 3:7666de697752 82 Button<SolarScreen>::deActivateButtons();
OHstin 3:7666de697752 83
OHstin 3:7666de697752 84 return changeScreen;
OHstin 3:7666de697752 85 }
OHstin 3:7666de697752 86
OHstin 3:7666de697752 87
OHstin 3:7666de697752 88 void SolarScreen::drawSolarScreen(){
OHstin 3:7666de697752 89
OHstin 3:7666de697752 90 // draw the tile
OHstin 3:7666de697752 91 drawTile();
OHstin 3:7666de697752 92
OHstin 3:7666de697752 93 // construct the list
OHstin 3:7666de697752 94 list = new ListController( 0,
OHstin 3:7666de697752 95 63,
OHstin 3:7666de697752 96 "Solar",
OHstin 3:7666de697752 97 "Values",
OHstin 3:7666de697752 98 "Graph",
OHstin 3:7666de697752 99 "",
OHstin 3:7666de697752 100 "",
OHstin 3:7666de697752 101 backgroundColor,
OHstin 3:7666de697752 102 2);
OHstin 3:7666de697752 103
OHstin 3:7666de697752 104 // draw the list
OHstin 3:7666de697752 105 list->drawList();
OHstin 3:7666de697752 106 }
OHstin 3:7666de697752 107
OHstin 3:7666de697752 108 void SolarScreen::drawTile()
OHstin 3:7666de697752 109 {
OHstin 3:7666de697752 110 // draw the green background
OHstin 3:7666de697752 111 tft.fillRect(0,0,tft.width(),63,ST7735_GREEN);
OHstin 3:7666de697752 112
OHstin 3:7666de697752 113 // draw the text
OHstin 3:7666de697752 114 tft.setTextSize(1);
OHstin 3:7666de697752 115 tft.setCursor(5,5);
OHstin 3:7666de697752 116 tft.setTextColor(ST7735_RED);
OHstin 3:7666de697752 117 tft.printf("Power:");
OHstin 3:7666de697752 118
OHstin 3:7666de697752 119 // update the power values
OHstin 3:7666de697752 120 updateTile();
OHstin 3:7666de697752 121 }
OHstin 3:7666de697752 122
OHstin 3:7666de697752 123 void SolarScreen::updateTile()
OHstin 3:7666de697752 124 {
OHstin 3:7666de697752 125 // read the current power
OHstin 3:7666de697752 126 float wattage = getSolarPower();
OHstin 3:7666de697752 127
OHstin 3:7666de697752 128 // temporary storage
OHstin 3:7666de697752 129 char wattageString[5];
OHstin 3:7666de697752 130
OHstin 3:7666de697752 131 // tracks previously measured power
OHstin 3:7666de697752 132 // ensure first value is ridiculous
OHstin 3:7666de697752 133 // to enable print on startup
OHstin 3:7666de697752 134 //static float previousWattage = -1;
OHstin 3:7666de697752 135
OHstin 3:7666de697752 136 // convert float to char*
OHstin 3:7666de697752 137 // to round off to 1 decimal place
OHstin 3:7666de697752 138 sprintf(wattageString,"%.1f",wattage);
OHstin 3:7666de697752 139
OHstin 3:7666de697752 140 // convert back to float
OHstin 3:7666de697752 141 wattage = atof(wattageString);
OHstin 3:7666de697752 142
OHstin 3:7666de697752 143 // multiply by 10
OHstin 3:7666de697752 144 wattage = wattage*10;
OHstin 3:7666de697752 145
OHstin 3:7666de697752 146 // convert float to integer
OHstin 3:7666de697752 147 float currentWattage = wattage;
OHstin 3:7666de697752 148
OHstin 3:7666de697752 149 if(currentWattage != previousWattage){
OHstin 3:7666de697752 150
OHstin 3:7666de697752 151 // first delete the previous wattage
OHstin 3:7666de697752 152 drawWattage(previousWattage,ST7735_GREEN);
OHstin 3:7666de697752 153 // then write the new wattage
OHstin 3:7666de697752 154 drawWattage(currentWattage,ST7735_BLUE);
OHstin 3:7666de697752 155
OHstin 3:7666de697752 156
OHstin 3:7666de697752 157 }else{
OHstin 3:7666de697752 158 // do nothing
OHstin 3:7666de697752 159 }
OHstin 3:7666de697752 160
OHstin 3:7666de697752 161 // update the previous wattage
OHstin 3:7666de697752 162 previousWattage = currentWattage;
OHstin 3:7666de697752 163 }
OHstin 3:7666de697752 164
OHstin 3:7666de697752 165 void SolarScreen::drawWattage(float wattage, uint16_t color)
OHstin 3:7666de697752 166 {
OHstin 3:7666de697752 167 // convert float to integer
OHstin 3:7666de697752 168 int wattageInt = wattage;
OHstin 3:7666de697752 169
OHstin 3:7666de697752 170 // divide by 10
OHstin 3:7666de697752 171 int firstInt = wattageInt/10;
OHstin 3:7666de697752 172
OHstin 3:7666de697752 173 // print the quotient as the first value
OHstin 3:7666de697752 174 int secondInt = wattageInt%10;
OHstin 3:7666de697752 175
OHstin 3:7666de697752 176 // the coordinates of the first large digit
OHstin 3:7666de697752 177 int startWidth = 40;
OHstin 3:7666de697752 178 int startHeight = 15;
OHstin 3:7666de697752 179
OHstin 3:7666de697752 180 // The first Large Digit
OHstin 3:7666de697752 181 tft.setTextSize(6);
OHstin 3:7666de697752 182 tft.setCursor(startWidth, startHeight);
OHstin 3:7666de697752 183 tft.setTextColor(color);
OHstin 3:7666de697752 184 tft.printf("%d",firstInt);
OHstin 3:7666de697752 185
OHstin 3:7666de697752 186 // the decimal point
OHstin 3:7666de697752 187 tft.setCursor(startWidth+ 28, startHeight + 21);
OHstin 3:7666de697752 188 tft.setTextSize(3);
OHstin 3:7666de697752 189 tft.printf(".");
OHstin 3:7666de697752 190
OHstin 3:7666de697752 191 // The second Large Digit
OHstin 3:7666de697752 192 tft.setCursor(startWidth + 45, startHeight);
OHstin 3:7666de697752 193 tft.setTextSize(6);
OHstin 3:7666de697752 194 tft.printf("%d", secondInt);
OHstin 3:7666de697752 195
OHstin 3:7666de697752 196 // The power units
OHstin 3:7666de697752 197 tft.setCursor(startWidth + 80, startHeight + 15);
OHstin 3:7666de697752 198 tft.setTextSize(3);
OHstin 3:7666de697752 199 tft.printf("W");
OHstin 3:7666de697752 200
OHstin 3:7666de697752 201 // reset the text size to smallest
OHstin 3:7666de697752 202 tft.setTextSize(1);
OHstin 3:7666de697752 203 }
OHstin 3:7666de697752 204
OHstin 3:7666de697752 205 void SolarScreen::buttonPressed(int button)
OHstin 3:7666de697752 206 {
OHstin 3:7666de697752 207 switch(button){
OHstin 3:7666de697752 208
OHstin 3:7666de697752 209 case BACKBUTTON:
OHstin 3:7666de697752 210 // navigate to the previous screen
OHstin 3:7666de697752 211 changeScreen = -1;
OHstin 3:7666de697752 212 break;
OHstin 3:7666de697752 213
OHstin 3:7666de697752 214 case SCROLLBUTTON:
OHstin 3:7666de697752 215 // scroll to the next option
OHstin 3:7666de697752 216 scroll = true;
OHstin 3:7666de697752 217 break;
OHstin 3:7666de697752 218
OHstin 3:7666de697752 219 case ENTERBUTTON:
OHstin 3:7666de697752 220 // navigate to the selected option
OHstin 3:7666de697752 221 enter = true;
OHstin 3:7666de697752 222
OHstin 3:7666de697752 223 default:
OHstin 3:7666de697752 224 // do nothing
OHstin 3:7666de697752 225 break;
OHstin 3:7666de697752 226 }
OHstin 3:7666de697752 227 }
OHstin 3:7666de697752 228
OHstin 3:7666de697752 229 #endif