(DA) Internet of Things and Smart Electronics- ELE3006M2122
/
Final_Project_V15_DLeaming_25574043
Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Dependencies: mbed
Embed:
(wiki syntax)
Show/hide line numbers
main.cpp
00001 /* 00002 * Prints a string of characters to the screen buffer, string is cut off after the 83rd pixel. 00003 * @param x - the column number (0 to 83) 00004 * @param y - the row number (0-5) - the display is split into 6 banks - each bank can be considered a row 00005 * 00006 * @ File main.cpp 00007 * @ Author - David Leaming - 25574043 00008 * @ Date - January 2022 00009 * 00010 * Acknowledgements 00011 * Craig A. Evans, University of Leeds, TMP102 Library, Feb 2016 00012 * Dr Edmond Nurellari, University of Lincoln, Joystick, N5110 Libraries & SD Card Libraries 00013 * Paul Staron, Piezo Buzzer utility, April 2019 00014 */ 00015 00016 #include "mbed.h" // include the library header, ensure the library has been imported into the project 00017 #include "TMP102.h" 00018 #include "N5110.h" 00019 #include "Joystick.h" 00020 #include "Bitmap.h" 00021 #include "SDFileSystem.h" 00022 00023 TMP102 tmp102(I2C_SDA,I2C_SCL); // Create TMP102 object 00024 00025 // VCC,SCE,RST,D/C,MOSI,SCLK,LED 00026 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // Create Screen Object - K64F - pwr from 3V3, GND Pin also needs connecting 00027 00028 // y x button 00029 Joystick joystick(PTB10,PTB11,PTC16); // Define Joystick Object 00030 00031 SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); // MOSI, MISO, SCK, CS - Connections to SD card holder on K64F (SPI interface) 00032 00033 Serial pc(USBTX,USBRX); // UART connection for PC 00034 00035 struct State { // Struct for state 00036 int output; // output value 00037 float time; // time in state 00038 int nextState[9]; // array of next states 00039 }; 00040 00041 State fsm[11] = { 00042 {15,0.5,{0,1,0,0,0,10,0,0,0}}, // State 0 - 15 Degrees 00043 {16,0.5,{1,2,1,1,1,0,1,1,1}}, // State 1 - 16 Degrees 00044 {17,0.5,{2,3,2,2,2,1,2,2,2}}, // State 2 - 17 Degrees 00045 {18,0.5,{3,4,3,3,3,2,3,3,3}}, // State 3 - 18 Degrees 00046 {19,0.5,{4,5,4,4,4,3,4,4,4}}, // State 4 - 19 Degrees 00047 {20,0.5,{5,6,5,5,5,4,5,5,5}}, // State 5 - 20 Degrees 00048 {21,0.5,{6,7,6,6,6,5,6,6,6}}, // State 6 - 21 Degrees 00049 {22,0.5,{7,8,7,7,7,6,7,7,7}}, // State 7 - 22 Degrees 00050 {23,0.5,{8,9,8,8,8,7,8,8,8}}, // State 8 - 23 Degrees 00051 {24,0.5,{9,10,9,9,9,8,9,9,9}}, // State 9 - 24 Degrees 00052 {25,0.5,{10,1,10,10,10,9,10,10,10}} // State 10 - 25 Degrees 00053 }; 00054 00055 Ticker ticker_menu; // Create Menu ticker object 00056 00057 DigitalOut r_led(LED_RED); // K64F on-board LEDs 00058 DigitalOut g_led(LED_GREEN); // K64F on-board LEDs 00059 DigitalOut b_led(LED_BLUE); // K64F on-board LEDs 00060 00061 PwmOut LED01 (PTA1); // PCB Surface Mounted LED's - LED1 00062 PwmOut LED02 (PTA2); // PCB Surface Mounted LED's - LED2 00063 PwmOut LED03 (PTC2); // PCB Surface Mounted LED's - LED3 00064 PwmOut LED04 (PTC3); // PCB Surface Mounted LED's - LED4 00065 PwmOut LED05 (PTC4); // PCB Surface Mounted LED's - LED5 00066 PwmOut LED06 (PTD3); // PCB Surface Mounted LED's - LED6 00067 00068 PwmOut Buzzer (PTC10); // PCB Surface Mounted Piezo Buzzer 00069 00070 InterruptIn sw2(SW2); // K64F on-board switches 00071 InterruptIn sw3(SW3); // K64F on-board switches 00072 InterruptIn ButtonA (PTB9); // PCB Button - A 00073 InterruptIn ButtonB (PTD0); // PCB Button - B 00074 InterruptIn ButtonBack (PTB10); // PCB Button - Back 00075 00076 volatile int g_ButtonA_flag = 0; // Flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global 00077 volatile int g_ButtonB_flag = 0; // Flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global 00078 volatile int g_ButtonBack_flag = 0; // Flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global 00079 volatile int g_sw2_flag = 0; // Flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global 00080 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 00081 volatile int option = 0; // Menu option selection based on joystick direction 00082 volatile int g_state = 0; // 00083 volatile int g_StartTemp = 0; // 00084 00085 void error(); // error function hangs flashing an LED 00086 void init_serial(); // setup serial port 00087 void init_K64F(); // set-up the on-board LEDs and switches 00088 void init_PCB(); // set-up the PCB LEDs and buttons 00089 void ButtonA_isr(); // 00090 void ButtonB_isr(); // 00091 void ButtonBack_isr(); // 00092 void sw2_isr(); // 00093 void menu_timer_isr(); // 00094 void OnStartup(); // 00095 void Run(); // 00096 void StartTemp(); // 00097 void delete_file(char filename[]); // 00098 void WriteToFile(); // Function to attempt to write temperature to file 00099 00100 int main() 00101 { 00102 init_K64F(); // initialise the board 00103 init_serial(); // initialise the serial port 00104 init_PCB(); // initialise the PCB 00105 00106 tmp102.init(); // call the sensor init method using dot syntax 00107 lcd.init(); // initialise display 00108 joystick.init(); // initialise joystick 00109 00110 ticker_menu.attach(&menu_timer_isr,0.2); // Attach ticker for the Joystick 00111 00112 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 00113 ButtonA.rise(&ButtonA_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for 00114 ButtonB.rise(&ButtonB_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for 00115 00116 lcd.setContrast(0.5); // change set contrast in range 0.0 to 1.0 00117 00118 OnStartup(); // Call intro screen 00119 Run(); // Call main-menu and functions 00120 } 00121 00122 void init_serial() { 00123 pc.baud(115200); // set to highest baud - ensure terminal software matches 00124 } 00125 00126 void init_K64F() 00127 { 00128 r_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. 00129 g_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. 00130 b_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. 00131 00132 sw2.mode(PullNone); // since the on-board switches have external pull-ups, we should disable the internal pull-down 00133 sw3.mode(PullNone); // resistors that are enabled by default using InterruptIn 00134 } 00135 00136 void init_PCB () 00137 { 00138 LED01 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00139 LED02 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00140 LED03 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00141 LED04 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00142 LED05 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00143 LED06 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly 00144 00145 Buzzer = 0; // Ensure Piezo Buzzer is off 00146 00147 ButtonA.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed 00148 ButtonB.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed 00149 } 00150 00151 void ButtonA_isr() // ButtonA event-triggered interrupt 00152 { 00153 g_ButtonA_flag = 1; // set flag in ISR 00154 } 00155 00156 void ButtonB_isr() // ButtonB event-triggered interrupt 00157 { 00158 g_ButtonB_flag = 1; // set flag in ISR 00159 } 00160 00161 void ButtonBack_isr() // ButtonB event-triggered interrupt 00162 { 00163 g_ButtonBack_flag = 1; // set flag in ISR 00164 } 00165 00166 void sw2_isr() // SW2 event-triggered interrupt 00167 { 00168 g_sw2_flag = 1; // set flag in ISR 00169 } 00170 00171 void menu_timer_isr() 00172 { 00173 g_menu_timer_flag = 1; // set flag in ISR 00174 } 00175 00176 void OnStartup() // Run some start up display 00177 { 00178 Buzzer.period(1.0/659.0); // Welcome sounds from Piezo 00179 Buzzer = 0.5; // 00180 wait(0.5); // 00181 Buzzer.period(1.0/494.0); // 00182 Buzzer = 0.5; // 00183 wait(0.5); // 00184 Buzzer.period(1.0/554.0); // 00185 Buzzer = 0.5; // 00186 wait(0.5); // 00187 Buzzer = 0; // Turn off welcome sounds 00188 lcd.clear(); // Clear buffer at start of every loop 00189 lcd.printString("--------------",0,0); // Can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display) 00190 lcd.printString(" Smart Cold",0,1); // Just a welcome message before auto moving to main menu 00191 lcd.printString(" Storage",0,2); // 00192 lcd.printString(" Monitoring",0,3); // 00193 lcd.printString("V15 - Jan 2022",0,4); // 00194 lcd.printString("--------------",0,5); // 00195 lcd.refresh(); // Need to refresh display after setting pixels or writing strings 00196 wait(5.0); // Leave welcome screen on for designated amount of time 00197 lcd.clear(); // Clear buffer at start of every loop 00198 lcd.refresh(); // Need to refresh display after setting pixels or writing strings 00199 lcd.printString("--------------",0,0); // 00200 lcd.printString(" Use Joystick",0,1); // Instruction for use of menu 00201 lcd.printString(" To Navigate",0,2); // 00202 lcd.printString("",0,3); // Blank Line 00203 lcd.printString(" A = Select",0,4); // 00204 lcd.printString("--------------",0,5); // 00205 lcd.refresh(); // Need to refresh display after setting pixels or writing strings 00206 wait(5.0); // 00207 init_PCB(); // Ran again to ensure all LED's etc are turned off 00208 printf("Transition to Temp Selection %i\n",StartTemp); // Observe on serial port - ensure transition to correct screen 00209 } 00210 00211 enum EMenuState // An enum controlling the current state of the display. 00212 { 00213 MENUSTATE_StartTemp, // Defining each menu state to be called upon later 00214 MENUSTATE_Main, // Defining each menu state to be called upon later 00215 MENUSTATE_Monitor, // Defining each menu state to be called upon later 00216 MENUSTATE_OneOff, // Defining each menu state to be called upon later 00217 MENUSTATE_Results, // Defining each menu state to be called upon later 00218 MENUSTATE_About, // Defining each menu state to be called upon later 00219 MENUSTATE_Author, // Defining each menu state to be called upon later 00220 00221 MENUSTATTE_Num, // This is a special enum value that just gives is a way to get the number of elements in the enum. 00222 }; 00223 00224 void Run() 00225 { 00226 int MenuState = MENUSTATE_StartTemp; // 00227 int SelectedItem = 0; // 00228 int NumMenuItems = 1; // 00229 00230 char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) 00231 00232 while(1){ 00233 if (g_menu_timer_flag){ // 00234 g_menu_timer_flag = 0; // 00235 00236 bool bAButtonWasPressed = g_ButtonA_flag; // Get the value of the input flags and reset them 00237 bool bBButtonWasPressed = g_ButtonB_flag; // Get the value of the input flags and reset them 00238 g_ButtonA_flag = 0; // 00239 g_ButtonB_flag = 0; // 00240 00241 lcd.clear(); // clear buffer at start of every loop 00242 00243 int NewMenuState = MENUSTATTE_Num; // The new menu we want to transition to, if any. 00244 00245 switch(MenuState) // Update and Draw whichever menu we're on. 00246 { 00247 case MENUSTATE_StartTemp: // 00248 { 00249 NumMenuItems = 1; // Dont for get to set this when changing number of items in the menu. We need this to wrap the selection around properly etc. 00250 if(SelectedItem >= NumMenuItems) // 00251 { 00252 SelectedItem = 0; // Something has gone wrong, reset selected item. 00253 } 00254 Direction d = joystick.get_direction(); 00255 00256 StartTemp(); 00257 00258 float g_StartTemp = fsm[g_state].output; // read temperature and print to lcd 00259 pc.printf("T = %f C\n",g_StartTemp); // Print to serial - allows testing without device attached 00260 printf ("Joystick Direction Points = %i\n",d); // 00261 printf ("State selected = %i\n", g_state); // 00262 int length = sprintf(buffer," T = %.2f C",g_StartTemp); // print formatted data to buffer - it is important the format specifier ensures the length will fit in the buffer 00263 if (length <= 14){ // if string will fit on display (assuming printing at x=0) 00264 lcd.printString("- Set Target -",0,0); // 00265 lcd.printString("---- Temp ----",0,1); // 00266 lcd.printString(buffer,0,3); // display on screen 00267 lcd.printString("'A' to Select",0,5); // 00268 lcd.refresh(); 00269 } // need to refresh display after setting pixels or writing strings 00270 00271 if(bAButtonWasPressed) // If A was pressed then we transition to the selected screen. 00272 { 00273 if(SelectedItem == 0) // If 0 line is selected, move to detailed menu 00274 { // Actually 0 line + 1, see circle draw and selection below 00275 NewMenuState = MENUSTATE_Main; // 00276 } 00277 } 00278 } 00279 break; // 00280 case MENUSTATE_Main: // 00281 { 00282 NumMenuItems = 5; // Dont for get to set this when changing number of items in the menu. We need this to wrap the selection around properly etc. 00283 if(SelectedItem >= NumMenuItems) // 00284 { 00285 SelectedItem = 0; // Something has gone wrong, reset selected item. 00286 } 00287 lcd.printString("---- MENU ----",0,0); // Menu title and selectable options 00288 lcd.printString("M1 - Monitor",0,1); // Printed to the LCD screen 00289 lcd.printString("M2 - One-off",0,2); // 00290 lcd.printString("Results",0,3); // 00291 lcd.printString("About",0,4); // 00292 lcd.printString("Author",0,5); // 00293 00294 if(bAButtonWasPressed) // If A was pressed then we transition to the selected screen. 00295 { 00296 if(SelectedItem == 0) // If 0 line is selected, move to detailed menu 00297 { // Actually 0 line + 1, see circle draw and selection below 00298 NewMenuState = MENUSTATE_Monitor; // 00299 } 00300 else if(SelectedItem == 1) // If 1 line is selected, move to detailed menu 00301 { // Actually 1 line + 1, see circle draw and selection below 00302 NewMenuState = MENUSTATE_OneOff; // 00303 } 00304 else if(SelectedItem == 2) // If 2 line is selected, move to detailed menu 00305 { // Actually 2 line + 1, see circle draw and selection below 00306 NewMenuState = MENUSTATE_Results; // 00307 } 00308 else if(SelectedItem == 3) // If 2 line is selected, move to detailed menu 00309 { // Actually 2 line + 1, see circle draw and selection below 00310 NewMenuState = MENUSTATE_About; // 00311 } 00312 else if(SelectedItem == 4) // If 3 line is selected, move to detailed menu 00313 { // Actually 3 line + 1, see circle draw and selection below 00314 NewMenuState = MENUSTATE_Author; // 00315 } 00316 } 00317 } 00318 break; // 00319 case MENUSTATE_Monitor: // Call constant measurement menu following top menu selection 00320 { 00321 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc. 00322 00323 if(SelectedItem >= NumMenuItems) // 00324 { 00325 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00326 } 00327 00328 float T = tmp102.get_temperature(); // read temperature and print to lcd 00329 pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached 00330 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 00331 if (length <= 14) // if string will fit on display (assuming printing at x=0) 00332 lcd.printString("-- Constant --",0,0); // 00333 lcd.printString("- Monitoring -",0,1); // 00334 lcd.printString(buffer,0,3); // display on screen 00335 lcd.printString(" 'A' to Menu",0,5); // 00336 lcd.refresh(); // need to refresh display after setting pixels or writing strings 00337 wait(0.5); // 00338 00339 if (T >= g_StartTemp + 2) { // High temp alarm condition - in real world would be lot lower!! 00340 LED01 = !LED01; // Flash LED01 if temperature is over specified - Simulated starting of cold blowers 00341 LED02 = !LED02; // Flash LED02 if temperature is over specified - Simulated starting of cold blowers 00342 LED03 = !LED03; // Flash LED03 if temperature is over specified - Simulated starting of cold blowers 00343 printf("WARNING - High Temp!! \n"); // 00344 Buzzer.period(1.0/554.0); // Warning Buzzer to extremely high 00345 Buzzer = 0.5; // 00346 wait(0.5); // 00347 Buzzer = 0; // 00348 } 00349 else { 00350 LED01 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers 00351 LED02 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers 00352 LED03 = 1; // LED01 off if temperature is below specified - Simulated stopping of cold blowers 00353 Buzzer = 0; // Buzzer off if temperature is below specified - Simulated stopping of cold blowers 00354 } 00355 00356 if (T <= g_StartTemp - 2) { // High temp alarm condition - in real world would be lot lower!! 00357 LED04 = !LED04; // Flash LED01 if temperature is over specified - Simulated starting of heaters 00358 LED05 = !LED05; // Flash LED02 if temperature is over specified - Simulated starting of heaters 00359 LED06 = !LED06; // Flash LED03 if temperature is over specified - Simulated starting of heaters 00360 printf("WARNING - Low Temp!! \n"); // 00361 Buzzer.period(1.0/554.0); // Warning Buzzer to extremely high 00362 Buzzer = 0.5; // 00363 wait(0.5); // 00364 Buzzer = 0; // 00365 } 00366 else { 00367 LED04 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters 00368 LED05 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters 00369 LED06 = 1; // LED01 off if temperature is below specified - Simulated stopping of heaters 00370 Buzzer = 0; // Buzzer off if temperature is below specified - Simulated stopping of heaters 00371 } 00372 if(bAButtonWasPressed) // Check if button was pressed 00373 { 00374 if(SelectedItem == 0) // 00375 { 00376 NewMenuState = MENUSTATE_Main; // Transition back to the main menu 00377 LED01 = 1; // Turn off LED upon transition back to main menu 00378 LED02 = 1; // Turn off LED upon transition back to main menu 00379 LED03 = 1; // Turn off LED upon transition back to main menu 00380 LED04 = 1; // Turn off LED upon transition back to main menu 00381 LED05 = 1; // Turn off LED upon transition back to main menu 00382 LED06 = 1; // Turn off LED upon transition back to main menu 00383 } 00384 } 00385 } 00386 break; 00387 case MENUSTATE_OneOff: // Call a one off measurement menu following top menu selection 00388 { 00389 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc. 00390 if(SelectedItem >= NumMenuItems) // 00391 { 00392 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00393 } 00394 00395 T = tmp102.get_temperature(); // read temperature and print to lcd 00396 pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached 00397 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 00398 if (length <= 14){ // if string will fit on display (assuming printing at x=0) 00399 lcd.printString("-- One-Off --",0,0); // 00400 lcd.printString("-- Measure --",0,1); // 00401 lcd.printString(buffer,0,3); // display on screen 00402 lcd.printString(" 'A' to Menu",0,5); // 00403 } 00404 00405 if(bAButtonWasPressed) // Check if button was pressed 00406 { 00407 if(SelectedItem == 0) // 00408 { 00409 NewMenuState = MENUSTATE_Main; // Take us back to top menu 00410 } 00411 } 00412 00413 } 00414 break; 00415 case MENUSTATE_Results: // Call Author menu following top menu selection 00416 { 00417 00418 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc. 00419 if(SelectedItem >= NumMenuItems) // 00420 { 00421 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00422 } 00423 00424 WriteToFile(); // 00425 00426 lcd.printString("--- Results ---",0,0); // 00427 lcd.printString(" ",0,1); // 00428 lcd.printString(" ",0,2); // 00429 lcd.printString(" ",0,3); // 00430 lcd.printString(" ",0,4); // 00431 lcd.printString(" 'A' to Menu",0,5); // 00432 00433 if(bAButtonWasPressed) // Check if button was pressed 00434 { 00435 if(SelectedItem == 0) // 00436 { 00437 NewMenuState = MENUSTATE_Main; // Take us back to top menu 00438 } 00439 } 00440 } 00441 break; 00442 case MENUSTATE_About: // Call About menu following top menu selection 00443 { 00444 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc. 00445 if(SelectedItem >= NumMenuItems) // 00446 { 00447 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00448 } 00449 00450 lcd.printString("--- About ---",0,0); // 00451 lcd.printString("ELE3006M - IoT",0,1); // 00452 lcd.printString(" Project",0,2); // 00453 lcd.printString("Uni of Lincoln",0,3); // 00454 lcd.printString(" 'A' to Menu",0,5); // 00455 lcd.refresh(); // 00456 00457 if(bAButtonWasPressed) // Check if button was pressed 00458 { 00459 if(SelectedItem == 0) // 00460 { 00461 NewMenuState = MENUSTATE_Main; // Transition back to Main Menu 00462 } 00463 } 00464 } 00465 break; 00466 case MENUSTATE_Author: // Call Author menu following top menu selection 00467 { 00468 00469 NumMenuItems = 1; // Detail the number of items in Menu - need this to wrap the selection around properly etc. 00470 if(SelectedItem >= NumMenuItems) // 00471 { 00472 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00473 } 00474 00475 lcd.printString("--- Author ---",0,0); // 00476 lcd.printString("David Leaming ",0,1); // 00477 lcd.printString(" 25574043 ",0,2); // 00478 lcd.printString(" VolkerRail",0,3); // 00479 lcd.printString(" 'A' to Menu",0,5); // 00480 00481 if(bAButtonWasPressed) // Check if button was pressed 00482 { 00483 if(SelectedItem == 0) // 00484 { 00485 NewMenuState = MENUSTATE_Main; // Take us back to top menu 00486 } 00487 } 00488 } 00489 break; 00490 00491 default: 00492 { 00493 NewMenuState = MENUSTATE_Main; // Something has gone wrong, drop back to the main menu. 00494 } 00495 }; 00496 00497 if(NewMenuState != MENUSTATTE_Num) // If we have requested a new menu state. 00498 { 00499 printf("Transitioning to MenuState: %i\n", NewMenuState); // Observe on serial port - ensure transition to correct screen 00500 00501 MenuState = NewMenuState; // We want to transition the menu to a new state. 00502 00503 // Do any bookkeeping needed when moving to new state. 00504 SelectedItem = 0; // Reset the selected item. 00505 00506 lcd.clear(); // Clear the display for one frame on state transition. 00507 } 00508 else 00509 { 00510 unsigned int SelectionMarkerRadius = 4; // If we have not selected to move to a new menu. 00511 unsigned int SelectionMarkerX = WIDTH - (2 * SelectionMarkerRadius); // Draw a marker circle at end of line to show which is the currently selected item. 00512 unsigned int SelectionMarkerY = (HEIGHT / 5) * (SelectedItem + 1); // +1 because of the menu title being on first row 00513 lcd.drawCircle(SelectionMarkerX, SelectionMarkerY, SelectionMarkerRadius, FILL_BLACK); // Fill the circle black so it can be seen easily 00514 00515 // Handle Joystick Input 00516 Direction d = joystick.get_direction(); 00517 printf("Direction = %i\n"); 00518 switch (joystick.get_direction()) { // Call to check direction joystick is pointing 00519 case N: 00520 { 00521 SelectedItem--; 00522 printf("Selection decremented to %i\n", SelectedItem); 00523 } 00524 break; // 00525 case S: 00526 { 00527 SelectedItem++; 00528 printf("Selection incremented to %i\n", SelectedItem); 00529 } 00530 break; // 00531 } 00532 00533 if(SelectedItem < 0) // Wrap the selection around to the start/end of the menu if it goes below 0 or above NumMenuItems. 00534 { 00535 SelectedItem = NumMenuItems - 1; // 00536 } 00537 else if(SelectedItem >= NumMenuItems) // 00538 { 00539 SelectedItem = 0; // 00540 } 00541 } 00542 00543 lcd.refresh(); //Finally update the display. 00544 } 00545 } 00546 } 00547 00548 void StartTemp() // 00549 { 00550 Direction d = joystick.get_direction(); // 00551 00552 g_StartTemp = fsm[g_state].output; // set ouput depending on current state 00553 wait(fsm[g_state].time); // wait in that state for desired time 00554 g_state = fsm[g_state].nextState[d]; // read input and update curent state 00555 } 00556 00557 void WriteToFile() // Function to attempt to write temperature to file 00558 { 00559 printf("#### SD Card Example #####\n"); 00560 FILE *fp; // this is our file pointer 00561 00562 float T = tmp102.get_temperature(); // read temperature and print to lcd 00563 pc.printf("T = %f K\n",T); // Print to serial - allows testing without device attached 00564 00565 fp = fopen("OvernightTemps", "w"); 00566 int ONight_Temp = T; // 00567 00568 if (fp == NULL) { // if it can't open the file then print error message 00569 printf("Error! Unable to open file!\n"); 00570 } 00571 else { // opened file so can write 00572 printf("Writing to file...."); 00573 for(int i = T; i <= 50; i++) { 00574 float T = 1000.0F/i; // dummy variable 00575 fprintf(fp, "%d,%f\n",i,T); // print formatted string to file (CSV) 00576 } 00577 printf("Done.\n"); 00578 fclose(fp); // ensure you close the file after writing 00579 } 00580 }
Generated on Sun Jul 31 2022 21:19:10 by
1.7.2