(DA) Internet of Things and Smart Electronics- ELE3006M2122 / Mbed 2 deprecated Final_Project_V19_DLeaming_25574043

Final tidy of code following installation of new sensor, more comments added prior to submission

Dependencies:   mbed

main.cpp@10:357b3329620f, 2022-01-19 (annotated)

Committer:
legstar85
Date:
Wed Jan 19 07:37:55 2022 +0000
Revision:
10:357b3329620f
Parent:
9:d71b92c916f8
Child:
11:a6eec09b546e
Up-Rev of code, small changes including general tidy of code and adding of missing comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
legstar85 4:0090145b3286 1 /*
legstar85 2:e0091b5311f1 2 * @ File main.cpp
legstar85 4:0090145b3286 3 * @ Author - David Leaming - 25574043
legstar85 9:d71b92c916f8 4 * @ Date - January 2022
legstar85 2:e0091b5311f1 5 * Acknowledgements
legstar85 2:e0091b5311f1 6 * Craig A. Evans, University of Leeds, TMP102 Library ,Feb 2016
legstar85 2:e0091b5311f1 7 * Dr Edmond Nurellari, University of Lincoln, Joystick & N5110 Libraries
eencae 0:21a200b880d7 8 */
eencae 0:21a200b880d7 9
legstar85 2:e0091b5311f1 10 #include "mbed.h" // include the library header, ensure the library has been imported into the project
eencae 1:dd5fb735acf1 11 #include "TMP102.h"
legstar85 2:e0091b5311f1 12 #include "N5110.h"
legstar85 2:e0091b5311f1 13 #include "Joystick.h"
legstar85 2:e0091b5311f1 14 #include "Bitmap.h"
eencae 0:21a200b880d7 15
legstar85 2:e0091b5311f1 16 TMP102 tmp102(I2C_SDA,I2C_SCL); // Create TMP102 object
legstar85 2:e0091b5311f1 17
legstar85 2:e0091b5311f1 18 // VCC,SCE,RST,D/C,MOSI,SCLK,LED
legstar85 2:e0091b5311f1 19 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // Create Screen Object - K64F - pwr from 3V3, GND Pin also needs connecting
legstar85 2:e0091b5311f1 20
legstar85 3:80c1eba78f9b 21 // y x button
legstar85 3:80c1eba78f9b 22 Joystick joystick(PTB10,PTB11,PTC16); // Define Joystick Object
eencae 0:21a200b880d7 23
legstar85 2:e0091b5311f1 24 Serial pc(USBTX,USBRX); // UART connection for PC
legstar85 2:e0091b5311f1 25
legstar85 5:eebd36a47049 26 Ticker ticker_menu; // Create Menu ticker object
legstar85 5:eebd36a47049 27
legstar85 2:e0091b5311f1 28 DigitalOut r_led(LED_RED); // K64F on-board LEDs
legstar85 2:e0091b5311f1 29 DigitalOut g_led(LED_GREEN); // K64F on-board LEDs
legstar85 2:e0091b5311f1 30 DigitalOut b_led(LED_BLUE); // K64F on-board LEDs
eencae 0:21a200b880d7 31
legstar85 8:07323fcab6d1 32 PwmOut LED01 (PTA1); // PCB Surface Mounted LED's - LED1
legstar85 8:07323fcab6d1 33 PwmOut LED02 (PTA2); // PCB Surface Mounted LED's - LED2
legstar85 8:07323fcab6d1 34 PwmOut LED03 (PTC2); // PCB Surface Mounted LED's - LED3
legstar85 8:07323fcab6d1 35 PwmOut LED04 (PTC3); // PCB Surface Mounted LED's - LED4
legstar85 8:07323fcab6d1 36 PwmOut LED05 (PTC4); // PCB Surface Mounted LED's - LED5
legstar85 8:07323fcab6d1 37 PwmOut LED06 (PTD3); // PCB Surface Mounted LED's - LED6
legstar85 8:07323fcab6d1 38
legstar85 8:07323fcab6d1 39 PwmOut Buzzer (PTC10); // PCB Surface Mounted Piezo Buzzer
legstar85 3:80c1eba78f9b 40
legstar85 2:e0091b5311f1 41 InterruptIn sw2(SW2); // K64F on-board switches
legstar85 2:e0091b5311f1 42 InterruptIn sw3(SW3); // K64F on-board switches
legstar85 3:80c1eba78f9b 43 InterruptIn ButtonA (PTB9); // PCB Button - A
legstar85 3:80c1eba78f9b 44 InterruptIn ButtonB (PTD0); // PCB Button - B
legstar85 7:d77e95505e43 45 InterruptIn ButtonBack (PTB10); // PCB Button - Back
legstar85 3:80c1eba78f9b 46
legstar85 5:eebd36a47049 47 volatile int g_ButtonA_flag = 0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
legstar85 5:eebd36a47049 48 volatile int g_ButtonB_flag = 0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
legstar85 7:d77e95505e43 49 volatile int g_ButtonBack_flag = 0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
legstar85 5:eebd36a47049 50 volatile int g_sw2_flag = 0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
legstar85 5:eebd36a47049 51 volatile int g_menu_timer_flag = 0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
legstar85 5:eebd36a47049 52 volatile int option = 0; // Menu option selection based on joystick direction
legstar85 2:e0091b5311f1 53
legstar85 2:e0091b5311f1 54 void error(); // error function hangs flashing an LED
legstar85 2:e0091b5311f1 55 void init_serial(); // setup serial port
legstar85 2:e0091b5311f1 56 void init_K64F(); // set-up the on-board LEDs and switches
legstar85 3:80c1eba78f9b 57 void init_PCB(); // set-up the PCB LEDs and buttons
legstar85 9:d71b92c916f8 58 void ButtonA_isr(); //
legstar85 9:d71b92c916f8 59 void ButtonB_isr(); //
legstar85 9:d71b92c916f8 60 void ButtonBack_isr(); //
legstar85 9:d71b92c916f8 61 void sw2_isr(); //
legstar85 9:d71b92c916f8 62 void menu_timer_isr(); //
legstar85 6:ebf4784ce92b 63 void OnStartup(); //
legstar85 6:ebf4784ce92b 64 void Run(); //
legstar85 6:ebf4784ce92b 65 void ConstantMonitoring(); //
eencae 0:21a200b880d7 66
eencae 0:21a200b880d7 67 int main()
eencae 0:21a200b880d7 68 {
legstar85 2:e0091b5311f1 69 init_K64F(); // initialise the board
legstar85 2:e0091b5311f1 70 init_serial(); // initialise the serial port
legstar85 3:80c1eba78f9b 71 init_PCB(); // initialise the PCB
legstar85 3:80c1eba78f9b 72
legstar85 2:e0091b5311f1 73 tmp102.init(); // call the sensor init method using dot syntax
legstar85 2:e0091b5311f1 74 lcd.init(); // initialise display
legstar85 3:80c1eba78f9b 75 joystick.init(); // initialise joystick
legstar85 3:80c1eba78f9b 76
legstar85 5:eebd36a47049 77 ticker_menu.attach(&menu_timer_isr,0.2); // Attach ticker for the Joystick
legstar85 5:eebd36a47049 78
legstar85 3:80c1eba78f9b 79 sw2.fall(&sw2_isr); // SW2 has a pull-up resistor, so the pin will be at 3.3 V by default and fall to 0 V when pressed. We therefore need to look for a falling edge on the pin to fire the interrupt
legstar85 3:80c1eba78f9b 80 ButtonA.rise(&ButtonA_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for
legstar85 3:80c1eba78f9b 81 ButtonB.rise(&ButtonB_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for
legstar85 2:e0091b5311f1 82
legstar85 2:e0091b5311f1 83 lcd.setContrast(0.5); // change set contrast in range 0.0 to 1.0
eencae 0:21a200b880d7 84
legstar85 9:d71b92c916f8 85 OnStartup(); // Call intro screen
legstar85 9:d71b92c916f8 86 Run(); // Call main-menu and functions
legstar85 5:eebd36a47049 87 }
eencae 0:21a200b880d7 88
eencae 0:21a200b880d7 89 void init_serial() {
legstar85 2:e0091b5311f1 90 pc.baud(115200); // set to highest baud - ensure terminal software matches
eencae 0:21a200b880d7 91 }
eencae 0:21a200b880d7 92
eencae 0:21a200b880d7 93 void init_K64F()
eencae 0:21a200b880d7 94 {
legstar85 2:e0091b5311f1 95 r_led = 1; // on-board LEDs are active-low, so set pin high to turn them off.
legstar85 2:e0091b5311f1 96 g_led = 1; // on-board LEDs are active-low, so set pin high to turn them off.
legstar85 2:e0091b5311f1 97 b_led = 1; // on-board LEDs are active-low, so set pin high to turn them off.
eencae 0:21a200b880d7 98
legstar85 2:e0091b5311f1 99 sw2.mode(PullNone); // since the on-board switches have external pull-ups, we should disable the internal pull-down
legstar85 2:e0091b5311f1 100 sw3.mode(PullNone); // resistors that are enabled by default using InterruptIn
eencae 0:21a200b880d7 101 }
legstar85 3:80c1eba78f9b 102
legstar85 3:80c1eba78f9b 103 void init_PCB ()
legstar85 3:80c1eba78f9b 104 {
legstar85 3:80c1eba78f9b 105 LED01 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 106 LED02 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 107 LED03 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 108 LED04 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 109 LED05 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 110 LED06 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
legstar85 9:d71b92c916f8 111
legstar85 9:d71b92c916f8 112 Buzzer = 0; // Ensure Piezo Buzzer is off
legstar85 3:80c1eba78f9b 113
legstar85 3:80c1eba78f9b 114 ButtonA.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed
legstar85 3:80c1eba78f9b 115 ButtonB.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed
legstar85 3:80c1eba78f9b 116 }
legstar85 3:80c1eba78f9b 117
legstar85 3:80c1eba78f9b 118 void ButtonA_isr() // ButtonA event-triggered interrupt
legstar85 3:80c1eba78f9b 119 {
legstar85 3:80c1eba78f9b 120 g_ButtonA_flag = 1; // set flag in ISR
legstar85 3:80c1eba78f9b 121 }
legstar85 3:80c1eba78f9b 122
legstar85 3:80c1eba78f9b 123 void ButtonB_isr() // ButtonB event-triggered interrupt
legstar85 3:80c1eba78f9b 124 {
legstar85 3:80c1eba78f9b 125 g_ButtonB_flag = 1; // set flag in ISR
legstar85 3:80c1eba78f9b 126 }
legstar85 3:80c1eba78f9b 127
legstar85 7:d77e95505e43 128 void ButtonBack_isr() // ButtonB event-triggered interrupt
legstar85 7:d77e95505e43 129 {
legstar85 7:d77e95505e43 130 g_ButtonBack_flag = 1; // set flag in ISR
legstar85 7:d77e95505e43 131 }
legstar85 7:d77e95505e43 132
legstar85 3:80c1eba78f9b 133 void sw2_isr() // SW2 event-triggered interrupt
legstar85 3:80c1eba78f9b 134 {
legstar85 3:80c1eba78f9b 135 g_sw2_flag = 1; // set flag in ISR
legstar85 5:eebd36a47049 136 }
legstar85 5:eebd36a47049 137
legstar85 5:eebd36a47049 138 void menu_timer_isr()
legstar85 5:eebd36a47049 139 {
legstar85 6:ebf4784ce92b 140 g_menu_timer_flag = 1; // set flag in ISR
legstar85 6:ebf4784ce92b 141 }
legstar85 6:ebf4784ce92b 142
legstar85 9:d71b92c916f8 143 void OnStartup() // Run some start up display
legstar85 6:ebf4784ce92b 144 {
legstar85 9:d71b92c916f8 145 Buzzer.period(1.0/659.0); // Welcome sounds from Piezo
legstar85 9:d71b92c916f8 146 Buzzer = 0.5; //
legstar85 9:d71b92c916f8 147 wait(0.5); //
legstar85 9:d71b92c916f8 148 Buzzer.period(1.0/494.0); //
legstar85 9:d71b92c916f8 149 Buzzer = 0.5; //
legstar85 9:d71b92c916f8 150 wait(0.5); //
legstar85 9:d71b92c916f8 151 Buzzer.period(1.0/554.0); //
legstar85 9:d71b92c916f8 152 Buzzer = 0.5; //
legstar85 9:d71b92c916f8 153 wait(0.5); //
legstar85 9:d71b92c916f8 154 Buzzer = 0; // Turn off welcome sounds
legstar85 9:d71b92c916f8 155 lcd.clear(); // Clear buffer at start of every loop
legstar85 9:d71b92c916f8 156 lcd.printString("--------------",0,0); // Can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display)
legstar85 7:d77e95505e43 157 lcd.printString(" Smart Cold",0,1); // Just a welcome message before auto moving to main menu
legstar85 7:d77e95505e43 158 lcd.printString(" Storage",0,2); //
legstar85 7:d77e95505e43 159 lcd.printString(" Monitoring",0,3); //
legstar85 10:357b3329620f 160 lcd.printString("V10 - Jan 2022",0,4); //
legstar85 7:d77e95505e43 161 lcd.printString("--------------",0,5); //
legstar85 9:d71b92c916f8 162 lcd.refresh(); // Need to refresh display after setting pixels or writing strings
legstar85 9:d71b92c916f8 163 wait(5.0); // Leave welcome screen on for designated amount of time
legstar85 9:d71b92c916f8 164 lcd.clear(); // Clear buffer at start of every loop
legstar85 9:d71b92c916f8 165 lcd.refresh(); // Need to refresh display after setting pixels or writing strings
legstar85 8:07323fcab6d1 166 lcd.printString("--------------",0,0); //
legstar85 8:07323fcab6d1 167 lcd.printString(" Use Joystick",0,1); // Instruction for use of menu
legstar85 8:07323fcab6d1 168 lcd.printString(" To Navigate",0,2); //
legstar85 8:07323fcab6d1 169 lcd.printString("",0,3); // Blank Line
legstar85 8:07323fcab6d1 170 lcd.printString(" A = Select",0,4); //
legstar85 8:07323fcab6d1 171 lcd.printString("--------------",0,5); //
legstar85 9:d71b92c916f8 172 lcd.refresh(); // Need to refresh display after setting pixels or writing strings
legstar85 7:d77e95505e43 173 wait(5.0); //
legstar85 9:d71b92c916f8 174 init_PCB(); // Ran again to ensure all LED's etc are turned off
legstar85 5:eebd36a47049 175 }
legstar85 5:eebd36a47049 176
legstar85 9:d71b92c916f8 177 enum EMenuState // An enum controlling the current state of the display.
legstar85 6:ebf4784ce92b 178 {
legstar85 9:d71b92c916f8 179 MENUSTATE_Main, // Defining each menu state to be called upon later
legstar85 9:d71b92c916f8 180 MENUSTATE_Monitor, // Defining each menu state to be called upon later
legstar85 9:d71b92c916f8 181 MENUSTATE_OneOff, // Defining each menu state to be called upon later
legstar85 9:d71b92c916f8 182 MENUSTATE_About, // Defining each menu state to be called upon later
legstar85 9:d71b92c916f8 183 MENUSTATE_Author, // Defining each menu state to be called upon later
legstar85 6:ebf4784ce92b 184
legstar85 6:ebf4784ce92b 185 MENUSTATTE_Num, // This is a special enum value that just gives is a way to get the number of elements in the enum.
legstar85 6:ebf4784ce92b 186 };
legstar85 6:ebf4784ce92b 187
legstar85 6:ebf4784ce92b 188 void Run()
legstar85 5:eebd36a47049 189 {
legstar85 9:d71b92c916f8 190 int MenuState; //
legstar85 9:d71b92c916f8 191 int SelectedItem = 0; //
legstar85 9:d71b92c916f8 192 int NumMenuItems = 1; //
legstar85 6:ebf4784ce92b 193
legstar85 7:d77e95505e43 194 char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
legstar85 7:d77e95505e43 195
legstar85 6:ebf4784ce92b 196 while(1){
legstar85 9:d71b92c916f8 197 if (g_menu_timer_flag){ //
legstar85 9:d71b92c916f8 198 g_menu_timer_flag = 0; //
legstar85 5:eebd36a47049 199
legstar85 6:ebf4784ce92b 200 bool bAButtonWasPressed = g_ButtonA_flag; // Get the value of the input flags and reset them
legstar85 9:d71b92c916f8 201 bool bBButtonWasPressed = g_ButtonB_flag; // Get the value of the input flags and reset them
legstar85 9:d71b92c916f8 202 g_ButtonA_flag = 0; //
legstar85 9:d71b92c916f8 203 g_ButtonB_flag = 0; //
legstar85 6:ebf4784ce92b 204
legstar85 5:eebd36a47049 205 lcd.clear(); // clear buffer at start of every loop
legstar85 6:ebf4784ce92b 206
legstar85 6:ebf4784ce92b 207 int NewMenuState = MENUSTATTE_Num; // The new menu we want to transition to, if any.
legstar85 6:ebf4784ce92b 208
legstar85 6:ebf4784ce92b 209 switch(MenuState) // Update and Draw whichever menu we're on.
legstar85 6:ebf4784ce92b 210 {
legstar85 9:d71b92c916f8 211 case MENUSTATE_Main: //
legstar85 6:ebf4784ce92b 212 {
legstar85 6:ebf4784ce92b 213
legstar85 7:d77e95505e43 214 NumMenuItems = 4; // Dont for get to set this when changing number of items in the menu. We need this to wrap the selection around properly etc.
legstar85 9:d71b92c916f8 215 if(SelectedItem >= NumMenuItems) //
legstar85 6:ebf4784ce92b 216 {
legstar85 6:ebf4784ce92b 217
legstar85 6:ebf4784ce92b 218 SelectedItem = 0; // Something has gone wrong, reset selected item.
legstar85 6:ebf4784ce92b 219 }
legstar85 9:d71b92c916f8 220 lcd.printString("---- MENU ----",0,0); // Menu title and selectable options
legstar85 9:d71b92c916f8 221 lcd.printString("M1 - Monitor",0,1); // Printed to the LCD screen
legstar85 9:d71b92c916f8 222 lcd.printString("M2 - One-off",0,2); //
legstar85 9:d71b92c916f8 223 lcd.printString("About",0,3); //
legstar85 9:d71b92c916f8 224 lcd.printString("Author",0,4); //
legstar85 6:ebf4784ce92b 225
legstar85 6:ebf4784ce92b 226 if(bAButtonWasPressed) // If A was pressed then we transition to the selected screen.
legstar85 6:ebf4784ce92b 227 {
legstar85 8:07323fcab6d1 228 if(SelectedItem == 0) // If 0 line is selected, move to detailed menu
legstar85 8:07323fcab6d1 229 { // Actually 0 line + 1, see circle draw and selection below
legstar85 9:d71b92c916f8 230 NewMenuState = MENUSTATE_Monitor; //
legstar85 6:ebf4784ce92b 231 }
legstar85 8:07323fcab6d1 232 else if(SelectedItem == 1) // If 1 line is selected, move to detailed menu
legstar85 8:07323fcab6d1 233 { // Actually 1 line + 1, see circle draw and selection below
legstar85 9:d71b92c916f8 234 NewMenuState = MENUSTATE_OneOff; //
legstar85 6:ebf4784ce92b 235 }
legstar85 8:07323fcab6d1 236 else if(SelectedItem == 2) // If 2 line is selected, move to detailed menu
legstar85 8:07323fcab6d1 237 { // Actually 2 line + 1, see circle draw and selection below
legstar85 9:d71b92c916f8 238 NewMenuState = MENUSTATE_About; //
legstar85 6:ebf4784ce92b 239 }
legstar85 8:07323fcab6d1 240 else if(SelectedItem == 3) // If 3 line is selected, move to detailed menu
legstar85 8:07323fcab6d1 241 { // Actually 3 line + 1, see circle draw and selection below
legstar85 9:d71b92c916f8 242 NewMenuState = MENUSTATE_Author; //
legstar85 7:d77e95505e43 243 }
legstar85 6:ebf4784ce92b 244 }
legstar85 6:ebf4784ce92b 245 }
legstar85 9:d71b92c916f8 246 break; //
legstar85 9:d71b92c916f8 247 case MENUSTATE_Monitor: // Call constant measurement menu following top menu selection
legstar85 6:ebf4784ce92b 248 {
legstar85 6:ebf4784ce92b 249
legstar85 8:07323fcab6d1 250 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
legstar85 6:ebf4784ce92b 251
legstar85 9:d71b92c916f8 252 if(SelectedItem >= NumMenuItems) //
legstar85 6:ebf4784ce92b 253 {
legstar85 6:ebf4784ce92b 254 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
legstar85 6:ebf4784ce92b 255 }
legstar85 6:ebf4784ce92b 256
legstar85 7:d77e95505e43 257 float T = tmp102.get_temperature(); // read temperature and print to lcd
legstar85 9:d71b92c916f8 258 pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached
legstar85 7:d77e95505e43 259 int length = sprintf(buffer," T = %.2f C",T); // print formatted data to buffer - it is important the format specifier ensures the length will fit in the buffer
legstar85 7:d77e95505e43 260 if (length <= 14) // if string will fit on display (assuming printing at x=0)
legstar85 9:d71b92c916f8 261 lcd.printString("-- Constant --",0,0); //
legstar85 9:d71b92c916f8 262 lcd.printString("- Monitoring -",0,1); //
legstar85 7:d77e95505e43 263 lcd.printString(buffer,0,3); // display on screen
legstar85 9:d71b92c916f8 264 lcd.printString(" 'A' to Menu",0,5); //
legstar85 7:d77e95505e43 265 lcd.refresh(); // need to refresh display after setting pixels or writing strings
legstar85 9:d71b92c916f8 266 wait(0.5); //
legstar85 8:07323fcab6d1 267
legstar85 8:07323fcab6d1 268 float high_temp = tmp102.get_temperature(); // read temperature
legstar85 9:d71b92c916f8 269 if (high_temp >= 25) { // High temp alarm condition - in real world would be lot lower!!
legstar85 9:d71b92c916f8 270 LED01 = 0; // Light LED01 if temperature is over specified - Simulated starting of cold blowers
legstar85 9:d71b92c916f8 271 LED02 = 0; // Light LED02 if temperature is over specified - Simulated starting of cold blowers
legstar85 9:d71b92c916f8 272 LED03 = 0; // Light LED03 if temperature is over specified - Simulated starting of cold blowers
legstar85 8:07323fcab6d1 273 }
legstar85 8:07323fcab6d1 274 else {
legstar85 9:d71b92c916f8 275 LED01 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
legstar85 9:d71b92c916f8 276 LED02 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
legstar85 9:d71b92c916f8 277 LED03 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers
legstar85 9:d71b92c916f8 278 Buzzer = 0; //
legstar85 9:d71b92c916f8 279 }
legstar85 9:d71b92c916f8 280
legstar85 9:d71b92c916f8 281 float low_temp = tmp102.get_temperature(); // Read temperature
legstar85 9:d71b92c916f8 282 if (low_temp <= 22) { // Low temp alarm condition - in real world would be lot lower!!
legstar85 9:d71b92c916f8 283 LED04 = 0; // Light LED04 if temperature is over specified - Simulated starting of heaters
legstar85 9:d71b92c916f8 284 LED05 = 0; // Light LED05 if temperature is over specified - Simulated starting of heaters
legstar85 9:d71b92c916f8 285 LED06 = 0; // Light LED06 if temperature is over specified - Simulated starting of heaters
legstar85 9:d71b92c916f8 286 }
legstar85 9:d71b92c916f8 287 else {
legstar85 9:d71b92c916f8 288 LED04 = 1; // LED04 off if temperature is above specified - Simulated stopping of heaters
legstar85 9:d71b92c916f8 289 LED05 = 1; // LED05 off if temperature is above specified - Simulated stopping of heaters
legstar85 9:d71b92c916f8 290 LED06 = 1; // LED06 off if temperature is above specified - Simulated stopping of heaters
legstar85 8:07323fcab6d1 291 }
legstar85 7:d77e95505e43 292
legstar85 9:d71b92c916f8 293 if(bAButtonWasPressed) // Check if button was pressed
legstar85 6:ebf4784ce92b 294 {
legstar85 9:d71b92c916f8 295 if(SelectedItem == 0) //
legstar85 6:ebf4784ce92b 296 {
legstar85 9:d71b92c916f8 297 NewMenuState = MENUSTATE_Main; // Transition back to the main menu
legstar85 9:d71b92c916f8 298 LED01 = 1; // Turn off LED upon transition back to main menu
legstar85 9:d71b92c916f8 299 LED02 = 1; // Turn off LED upon transition back to main menu
legstar85 9:d71b92c916f8 300 LED03 = 1; // Turn off LED upon transition back to main menu
legstar85 9:d71b92c916f8 301 LED04 = 1; // Turn off LED upon transition back to main menu
legstar85 9:d71b92c916f8 302 LED05 = 1; // Turn off LED upon transition back to main menu
legstar85 9:d71b92c916f8 303 LED06 = 1; // Turn off LED upon transition back to main menu
legstar85 6:ebf4784ce92b 304 }
legstar85 6:ebf4784ce92b 305 }
legstar85 6:ebf4784ce92b 306 }
legstar85 6:ebf4784ce92b 307 break;
legstar85 9:d71b92c916f8 308 case MENUSTATE_OneOff: // Call a one off measuremnt menu following top menu selection
legstar85 6:ebf4784ce92b 309 {
legstar85 6:ebf4784ce92b 310
legstar85 8:07323fcab6d1 311 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
legstar85 9:d71b92c916f8 312 if(SelectedItem >= NumMenuItems) //
legstar85 6:ebf4784ce92b 313 {
legstar85 7:d77e95505e43 314 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
legstar85 6:ebf4784ce92b 315 }
legstar85 6:ebf4784ce92b 316
legstar85 8:07323fcab6d1 317 float T = tmp102.get_temperature(); // read temperature and print to lcd
legstar85 9:d71b92c916f8 318 pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached
legstar85 8:07323fcab6d1 319 int length = sprintf(buffer," T = %.2f C",T); // print formatted data to buffer - it is important the format specifier ensures the length will fit in the buffer
legstar85 8:07323fcab6d1 320 if (length <= 14) // if string will fit on display (assuming printing at x=0)
legstar85 9:d71b92c916f8 321 lcd.printString("-- One-Off --",0,0); //
legstar85 9:d71b92c916f8 322 lcd.printString("-- Measure --",0,1); //
legstar85 8:07323fcab6d1 323 lcd.printString(buffer,0,3); // display on screen
legstar85 9:d71b92c916f8 324 lcd.printString(" 'A' to Menu",0,5); //
legstar85 6:ebf4784ce92b 325
legstar85 9:d71b92c916f8 326 if(bAButtonWasPressed) // Check if button was pressed
legstar85 6:ebf4784ce92b 327 {
legstar85 9:d71b92c916f8 328 if(SelectedItem == 0) //
legstar85 6:ebf4784ce92b 329 {
legstar85 8:07323fcab6d1 330 NewMenuState = MENUSTATE_Main; // Take us back to top menu
legstar85 6:ebf4784ce92b 331 }
legstar85 6:ebf4784ce92b 332 }
legstar85 6:ebf4784ce92b 333
legstar85 6:ebf4784ce92b 334 }
legstar85 6:ebf4784ce92b 335 break;
legstar85 9:d71b92c916f8 336 case MENUSTATE_About: // Call About menu following top menu selection
legstar85 6:ebf4784ce92b 337 {
legstar85 6:ebf4784ce92b 338
legstar85 8:07323fcab6d1 339 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
legstar85 9:d71b92c916f8 340 if(SelectedItem >= NumMenuItems) //
legstar85 6:ebf4784ce92b 341 {
legstar85 6:ebf4784ce92b 342 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
legstar85 6:ebf4784ce92b 343 }
legstar85 6:ebf4784ce92b 344
legstar85 9:d71b92c916f8 345 lcd.printString("--- About ---",0,0); //
legstar85 9:d71b92c916f8 346 lcd.printString("ELE3006M - IoT",0,1); //
legstar85 9:d71b92c916f8 347 lcd.printString(" Project",0,2); //
legstar85 9:d71b92c916f8 348 lcd.printString("Uni of Lincoln",0,3); //
legstar85 9:d71b92c916f8 349 lcd.printString(" 'A' to Menu",0,5); //
legstar85 9:d71b92c916f8 350 lcd.refresh(); //
legstar85 6:ebf4784ce92b 351
legstar85 9:d71b92c916f8 352 if(bAButtonWasPressed) // Check if button was pressed
legstar85 6:ebf4784ce92b 353 {
legstar85 9:d71b92c916f8 354 if(SelectedItem == 0) //
legstar85 6:ebf4784ce92b 355 {
legstar85 9:d71b92c916f8 356 NewMenuState = MENUSTATE_Main; // Transition back to Main Menu
legstar85 6:ebf4784ce92b 357 }
legstar85 6:ebf4784ce92b 358 }
legstar85 6:ebf4784ce92b 359 }
legstar85 6:ebf4784ce92b 360 break;
legstar85 9:d71b92c916f8 361 case MENUSTATE_Author: // Call Author menu following top menu selection
legstar85 7:d77e95505e43 362 {
legstar85 7:d77e95505e43 363
legstar85 8:07323fcab6d1 364 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc.
legstar85 9:d71b92c916f8 365 if(SelectedItem >= NumMenuItems) //
legstar85 7:d77e95505e43 366 {
legstar85 7:d77e95505e43 367 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
legstar85 7:d77e95505e43 368 }
legstar85 7:d77e95505e43 369
legstar85 9:d71b92c916f8 370 lcd.printString("--- Author ---",0,0); //
legstar85 9:d71b92c916f8 371 lcd.printString("David Leaming ",0,1); //
legstar85 9:d71b92c916f8 372 lcd.printString(" 25574043 ",0,2); //
legstar85 9:d71b92c916f8 373 lcd.printString(" VolkerRail",0,3); //
legstar85 9:d71b92c916f8 374 lcd.printString(" 'A' to Menu",0,5); //
legstar85 7:d77e95505e43 375
legstar85 9:d71b92c916f8 376 if(bAButtonWasPressed) // Check if button was pressed
legstar85 7:d77e95505e43 377 {
legstar85 9:d71b92c916f8 378 if(SelectedItem == 0) //
legstar85 7:d77e95505e43 379 {
legstar85 8:07323fcab6d1 380 NewMenuState = MENUSTATE_Main; // Take us back to top menu
legstar85 7:d77e95505e43 381 }
legstar85 7:d77e95505e43 382 }
legstar85 7:d77e95505e43 383 }
legstar85 7:d77e95505e43 384 break;
legstar85 7:d77e95505e43 385
legstar85 6:ebf4784ce92b 386 default:
legstar85 6:ebf4784ce92b 387 {
legstar85 6:ebf4784ce92b 388 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu.
legstar85 6:ebf4784ce92b 389 }
legstar85 6:ebf4784ce92b 390 };
legstar85 5:eebd36a47049 391
legstar85 6:ebf4784ce92b 392 if(NewMenuState != MENUSTATTE_Num) // If we have requested a new menu state.
legstar85 6:ebf4784ce92b 393 {
legstar85 8:07323fcab6d1 394 printf("Transitioning to MenuState: %i\n", NewMenuState); // Observe on serial port - ensure transition to correct screen
legstar85 6:ebf4784ce92b 395
legstar85 6:ebf4784ce92b 396 MenuState = NewMenuState; // We want to transition the menu to a new state.
legstar85 6:ebf4784ce92b 397
legstar85 6:ebf4784ce92b 398 // Do any bookkeeping needed when moving to new state.
legstar85 6:ebf4784ce92b 399 SelectedItem = 0; // Reset the selected item.
legstar85 6:ebf4784ce92b 400
legstar85 6:ebf4784ce92b 401 lcd.clear(); // Clear the display for one frame on state transition.
legstar85 6:ebf4784ce92b 402 } // Could do something else like invert colour etc here.
legstar85 6:ebf4784ce92b 403 else
legstar85 6:ebf4784ce92b 404 {
legstar85 6:ebf4784ce92b 405
legstar85 7:d77e95505e43 406 // If we have not selected to move to a new menu.
legstar85 7:d77e95505e43 407 unsigned int SelectionMarkerRadius = 4 ; // Draw a marker circle at end of line to show which is the currently selected item.
legstar85 7:d77e95505e43 408 unsigned int SelectionMarkerX = WIDTH - (2 * SelectionMarkerRadius);
legstar85 8:07323fcab6d1 409 unsigned int SelectionMarkerY = (HEIGHT / 5) * (SelectedItem + 1); // +1 because of the menu title being on first row
legstar85 9:d71b92c916f8 410 lcd.drawCircle(SelectionMarkerX, SelectionMarkerY, SelectionMarkerRadius, FILL_BLACK); // Fill the circle black so it can be seen easily
legstar85 6:ebf4784ce92b 411
legstar85 6:ebf4784ce92b 412 // Handle Joystick Input
legstar85 6:ebf4784ce92b 413 switch (joystick.get_direction()) { // Call to check direction joystick is pointing
legstar85 9:d71b92c916f8 414 printf("Direction = %i\n"); // Print direction to serial
legstar85 6:ebf4784ce92b 415 case N: //
legstar85 6:ebf4784ce92b 416 SelectedItem--; //
legstar85 6:ebf4784ce92b 417 break; //
legstar85 6:ebf4784ce92b 418 case S: //
legstar85 6:ebf4784ce92b 419 SelectedItem++; //
legstar85 6:ebf4784ce92b 420 break; //
legstar85 6:ebf4784ce92b 421 }
legstar85 6:ebf4784ce92b 422
legstar85 9:d71b92c916f8 423 if(SelectedItem < 0) // Wrap the selection around to the start/end of the menu if it goes below 0 or above NumMenuItems.
legstar85 6:ebf4784ce92b 424 {
legstar85 9:d71b92c916f8 425 SelectedItem = NumMenuItems - 1; //
legstar85 6:ebf4784ce92b 426 }
legstar85 9:d71b92c916f8 427 else if(SelectedItem >= NumMenuItems) //
legstar85 6:ebf4784ce92b 428 {
legstar85 9:d71b92c916f8 429 SelectedItem = 0; //
legstar85 6:ebf4784ce92b 430 }
legstar85 5:eebd36a47049 431 }
legstar85 5:eebd36a47049 432
legstar85 6:ebf4784ce92b 433 lcd.refresh(); //Finally update the display.
legstar85 6:ebf4784ce92b 434 }
legstar85 6:ebf4784ce92b 435 }
legstar85 5:eebd36a47049 436 }
legstar85 6:ebf4784ce92b 437
legstar85 5:eebd36a47049 438