![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
Addition of FSM to try and set initial starting temperature for use throughout project. Additional menu option. Joystick input 'bouncing' during FSM use - to be debugged
Dependencies: mbed N5110v02 TMP102 JoystickIoT
main.cpp@4:0090145b3286, 2021-12-21 (annotated)
- Committer:
- legstar85
- Date:
- Tue Dec 21 17:22:42 2021 +0000
- Revision:
- 4:0090145b3286
- Parent:
- 3:80c1eba78f9b
- Child:
- 5:eebd36a47049
D. Leaming - 25574043 - Initial Code Updated, Welcome messages added, TMP102 printing to LCD, External PCB buttons connected
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
legstar85 | 4:0090145b3286 | 1 | /* |
legstar85 | 2:e0091b5311f1 | 2 | * @ File main.cpp |
legstar85 | 4:0090145b3286 | 3 | * @ Author - David Leaming - 25574043 |
legstar85 | 2:e0091b5311f1 | 4 | * @ Date - December 2021 |
legstar85 | 2:e0091b5311f1 | 5 | * |
legstar85 | 2:e0091b5311f1 | 6 | * Acknowledgements |
legstar85 | 2:e0091b5311f1 | 7 | * Craig A. Evans, University of Leeds, TMP102 Library ,Feb 2016 |
legstar85 | 2:e0091b5311f1 | 8 | * Dr Edmond Nurellari, University of Lincoln, Joystick & N5110 Libraries |
legstar85 | 2:e0091b5311f1 | 9 | * |
eencae | 0:21a200b880d7 | 10 | */ |
eencae | 0:21a200b880d7 | 11 | |
legstar85 | 2:e0091b5311f1 | 12 | #include "mbed.h" // include the library header, ensure the library has been imported into the project |
eencae | 1:dd5fb735acf1 | 13 | #include "TMP102.h" |
legstar85 | 2:e0091b5311f1 | 14 | #include "N5110.h" |
legstar85 | 2:e0091b5311f1 | 15 | #include "Joystick.h" |
legstar85 | 2:e0091b5311f1 | 16 | #include "Bitmap.h" |
eencae | 0:21a200b880d7 | 17 | |
legstar85 | 2:e0091b5311f1 | 18 | TMP102 tmp102(I2C_SDA,I2C_SCL); // Create TMP102 object |
legstar85 | 2:e0091b5311f1 | 19 | |
legstar85 | 2:e0091b5311f1 | 20 | // VCC,SCE,RST,D/C,MOSI,SCLK,LED |
legstar85 | 2:e0091b5311f1 | 21 | N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // Create Screen Object - K64F - pwr from 3V3, GND Pin also needs connecting |
legstar85 | 2:e0091b5311f1 | 22 | |
legstar85 | 3:80c1eba78f9b | 23 | // y x button |
legstar85 | 3:80c1eba78f9b | 24 | Joystick joystick(PTB10,PTB11,PTC16); // Define Joystick Object |
eencae | 0:21a200b880d7 | 25 | |
legstar85 | 2:e0091b5311f1 | 26 | Serial pc(USBTX,USBRX); // UART connection for PC |
legstar85 | 2:e0091b5311f1 | 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 | 3:80c1eba78f9b | 32 | DigitalOut LED01 (PTA1); // PCB Surface Mounted LED's - LED1 |
legstar85 | 3:80c1eba78f9b | 33 | DigitalOut LED02 (PTA2); // PCB Surface Mounted LED's - LED2 |
legstar85 | 3:80c1eba78f9b | 34 | DigitalOut LED03 (PTC2); // PCB Surface Mounted LED's - LED3 |
legstar85 | 3:80c1eba78f9b | 35 | DigitalOut LED04 (PTC3); // PCB Surface Mounted LED's - LED4 |
legstar85 | 3:80c1eba78f9b | 36 | DigitalOut LED05 (PTC4); // PCB Surface Mounted LED's - LED5 |
legstar85 | 3:80c1eba78f9b | 37 | DigitalOut LED06 (PTD3); // PCB Surface Mounted LED's - LED6 |
legstar85 | 3:80c1eba78f9b | 38 | |
legstar85 | 2:e0091b5311f1 | 39 | InterruptIn sw2(SW2); // K64F on-board switches |
legstar85 | 2:e0091b5311f1 | 40 | InterruptIn sw3(SW3); // K64F on-board switches |
legstar85 | 3:80c1eba78f9b | 41 | InterruptIn ButtonA (PTB9); // PCB Button - A |
legstar85 | 3:80c1eba78f9b | 42 | InterruptIn ButtonB (PTD0); // PCB Button - B |
legstar85 | 3:80c1eba78f9b | 43 | |
legstar85 | 3:80c1eba78f9b | 44 | 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 | 3:80c1eba78f9b | 45 | 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 | 3:80c1eba78f9b | 46 | 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 | 2:e0091b5311f1 | 47 | |
legstar85 | 2:e0091b5311f1 | 48 | void error(); // error function hangs flashing an LED |
legstar85 | 2:e0091b5311f1 | 49 | void init_serial(); // setup serial port |
legstar85 | 2:e0091b5311f1 | 50 | void init_K64F(); // set-up the on-board LEDs and switches |
legstar85 | 3:80c1eba78f9b | 51 | void init_PCB(); // set-up the PCB LEDs and buttons |
legstar85 | 3:80c1eba78f9b | 52 | void ButtonA_isr(); |
legstar85 | 3:80c1eba78f9b | 53 | void ButtonB_isr(); |
legstar85 | 3:80c1eba78f9b | 54 | void sw2_isr(); |
eencae | 0:21a200b880d7 | 55 | |
eencae | 0:21a200b880d7 | 56 | int main() |
eencae | 0:21a200b880d7 | 57 | { |
legstar85 | 2:e0091b5311f1 | 58 | init_K64F(); // initialise the board |
legstar85 | 2:e0091b5311f1 | 59 | init_serial(); // initialise the serial port |
legstar85 | 3:80c1eba78f9b | 60 | init_PCB(); // initialise the PCB |
legstar85 | 3:80c1eba78f9b | 61 | |
legstar85 | 2:e0091b5311f1 | 62 | tmp102.init(); // call the sensor init method using dot syntax |
legstar85 | 2:e0091b5311f1 | 63 | lcd.init(); // initialise display |
legstar85 | 3:80c1eba78f9b | 64 | joystick.init(); // initialise joystick |
legstar85 | 3:80c1eba78f9b | 65 | |
legstar85 | 3:80c1eba78f9b | 66 | 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 | 67 | 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 | 68 | 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 | 69 | |
legstar85 | 2:e0091b5311f1 | 70 | lcd.setContrast(0.5); // change set contrast in range 0.0 to 1.0 |
eencae | 0:21a200b880d7 | 71 | |
legstar85 | 3:80c1eba78f9b | 72 | char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) |
legstar85 | 3:80c1eba78f9b | 73 | |
legstar85 | 3:80c1eba78f9b | 74 | lcd.clear(); // clear buffer at start of every loop |
legstar85 | 3:80c1eba78f9b | 75 | lcd.printString("Smart Cold",0,0); // can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display) |
legstar85 | 3:80c1eba78f9b | 76 | lcd.printString("Storage",0,1); // Just a welcome message before auto moving to main menu |
legstar85 | 3:80c1eba78f9b | 77 | lcd.printString("Monitoring",0,2); |
legstar85 | 3:80c1eba78f9b | 78 | lcd.printString("",0,2); // Blank Line |
legstar85 | 3:80c1eba78f9b | 79 | lcd.printString("V1.0 - 2021",0,4); |
legstar85 | 3:80c1eba78f9b | 80 | lcd.printString("David Leaming",0,5); |
legstar85 | 3:80c1eba78f9b | 81 | lcd.refresh(); // need to refresh display after setting pixels or writing strings |
legstar85 | 3:80c1eba78f9b | 82 | wait(5.0); // leave welcome screen on for designated amount of time |
legstar85 | 3:80c1eba78f9b | 83 | lcd.clear(); // clear buffer at start of every loop |
legstar85 | 3:80c1eba78f9b | 84 | lcd.refresh(); // need to refresh display after setting pixels or writing strings |
legstar85 | 3:80c1eba78f9b | 85 | lcd.printString("Use Joystick",0,0); // Instruction for use of menu |
legstar85 | 3:80c1eba78f9b | 86 | lcd.printString("To Navigate",0,1); |
legstar85 | 3:80c1eba78f9b | 87 | lcd.printString("",0,2); // Blank Line |
legstar85 | 3:80c1eba78f9b | 88 | lcd.printString("A = Select",0,3); |
legstar85 | 3:80c1eba78f9b | 89 | lcd.printString("B = Back",0,4); |
legstar85 | 3:80c1eba78f9b | 90 | lcd.refresh(); // need to refresh display after setting pixels or writing strings |
legstar85 | 3:80c1eba78f9b | 91 | wait(5.0); |
legstar85 | 3:80c1eba78f9b | 92 | |
legstar85 | 3:80c1eba78f9b | 93 | MainMenu: // Initial Main Menu Creation to allow mode to be selected |
legstar85 | 3:80c1eba78f9b | 94 | |
legstar85 | 3:80c1eba78f9b | 95 | |
legstar85 | 3:80c1eba78f9b | 96 | |
eencae | 0:21a200b880d7 | 97 | while (1) { |
eencae | 0:21a200b880d7 | 98 | |
legstar85 | 2:e0091b5311f1 | 99 | lcd.normalMode(); // normal colour mode |
legstar85 | 2:e0091b5311f1 | 100 | lcd.setBrightness(0.5); // put LED backlight on 50% |
legstar85 | 2:e0091b5311f1 | 101 | lcd.clear(); // clear buffer at start of every loop |
legstar85 | 2:e0091b5311f1 | 102 | lcd.refresh(); // need to refresh display after setting pixels or writing strings |
legstar85 | 2:e0091b5311f1 | 103 | |
legstar85 | 2:e0091b5311f1 | 104 | float T = tmp102.get_temperature(); // read temperature and print to lcd |
legstar85 | 3:80c1eba78f9b | 105 | 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 | 3:80c1eba78f9b | 106 | if (length <= 14) // if string will fit on display (assuming printing at x=0) |
legstar85 | 3:80c1eba78f9b | 107 | lcd.printString(buffer,0,2); // display on screen |
legstar85 | 2:e0091b5311f1 | 108 | lcd.refresh(); // need to refresh display after setting pixels or writing strings |
legstar85 | 2:e0091b5311f1 | 109 | wait(2.0); |
legstar85 | 3:80c1eba78f9b | 110 | |
legstar85 | 3:80c1eba78f9b | 111 | if (g_ButtonA_flag) { // check if flag i.e. interrupt has occured |
legstar85 | 3:80c1eba78f9b | 112 | g_ButtonA_flag = 0; // if it has, clear the flag |
legstar85 | 3:80c1eba78f9b | 113 | |
legstar85 | 3:80c1eba78f9b | 114 | printf("Button A Press \n"); // send message over serial port - can observe in CoolTerm etc. |
legstar85 | 3:80c1eba78f9b | 115 | LED01=0; |
legstar85 | 3:80c1eba78f9b | 116 | wait(5.0); |
legstar85 | 3:80c1eba78f9b | 117 | LED01=1; |
legstar85 | 3:80c1eba78f9b | 118 | } |
legstar85 | 3:80c1eba78f9b | 119 | |
legstar85 | 3:80c1eba78f9b | 120 | if (g_ButtonB_flag) { // check if flag i.e. interrupt has occured |
legstar85 | 3:80c1eba78f9b | 121 | g_ButtonB_flag = 0; // if it has, clear the flag |
legstar85 | 3:80c1eba78f9b | 122 | |
legstar85 | 3:80c1eba78f9b | 123 | printf("Button B Press \n"); // send message over serial port - can observe in CoolTerm etc. |
legstar85 | 3:80c1eba78f9b | 124 | LED02=0; |
legstar85 | 3:80c1eba78f9b | 125 | wait(5.0); |
legstar85 | 3:80c1eba78f9b | 126 | LED02=1; |
legstar85 | 3:80c1eba78f9b | 127 | |
legstar85 | 3:80c1eba78f9b | 128 | } |
eencae | 0:21a200b880d7 | 129 | |
eencae | 0:21a200b880d7 | 130 | } |
eencae | 0:21a200b880d7 | 131 | |
eencae | 0:21a200b880d7 | 132 | } |
eencae | 0:21a200b880d7 | 133 | |
eencae | 0:21a200b880d7 | 134 | void init_serial() { |
legstar85 | 2:e0091b5311f1 | 135 | pc.baud(115200); // set to highest baud - ensure terminal software matches |
eencae | 0:21a200b880d7 | 136 | } |
eencae | 0:21a200b880d7 | 137 | |
eencae | 0:21a200b880d7 | 138 | void init_K64F() |
eencae | 0:21a200b880d7 | 139 | { |
legstar85 | 2:e0091b5311f1 | 140 | r_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. |
legstar85 | 2:e0091b5311f1 | 141 | g_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. |
legstar85 | 2:e0091b5311f1 | 142 | b_led = 1; // on-board LEDs are active-low, so set pin high to turn them off. |
eencae | 0:21a200b880d7 | 143 | |
legstar85 | 2:e0091b5311f1 | 144 | sw2.mode(PullNone); // since the on-board switches have external pull-ups, we should disable the internal pull-down |
legstar85 | 2:e0091b5311f1 | 145 | sw3.mode(PullNone); // resistors that are enabled by default using InterruptIn |
eencae | 0:21a200b880d7 | 146 | |
eencae | 0:21a200b880d7 | 147 | } |
legstar85 | 3:80c1eba78f9b | 148 | |
legstar85 | 3:80c1eba78f9b | 149 | void init_PCB () |
legstar85 | 3:80c1eba78f9b | 150 | { |
legstar85 | 3:80c1eba78f9b | 151 | LED01 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly |
legstar85 | 3:80c1eba78f9b | 152 | LED02 = 1; |
legstar85 | 3:80c1eba78f9b | 153 | LED03 = 1; |
legstar85 | 3:80c1eba78f9b | 154 | LED04 = 1; |
legstar85 | 3:80c1eba78f9b | 155 | LED05 = 1; |
legstar85 | 3:80c1eba78f9b | 156 | LED06 = 1; |
legstar85 | 3:80c1eba78f9b | 157 | |
legstar85 | 3:80c1eba78f9b | 158 | 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 | 159 | 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 | 160 | |
legstar85 | 3:80c1eba78f9b | 161 | } |
legstar85 | 3:80c1eba78f9b | 162 | |
legstar85 | 3:80c1eba78f9b | 163 | void ButtonA_isr() // ButtonA event-triggered interrupt |
legstar85 | 3:80c1eba78f9b | 164 | { |
legstar85 | 3:80c1eba78f9b | 165 | g_ButtonA_flag = 1; // set flag in ISR |
legstar85 | 3:80c1eba78f9b | 166 | } |
legstar85 | 3:80c1eba78f9b | 167 | |
legstar85 | 3:80c1eba78f9b | 168 | void ButtonB_isr() // ButtonB event-triggered interrupt |
legstar85 | 3:80c1eba78f9b | 169 | { |
legstar85 | 3:80c1eba78f9b | 170 | g_ButtonB_flag = 1; // set flag in ISR |
legstar85 | 3:80c1eba78f9b | 171 | } |
legstar85 | 3:80c1eba78f9b | 172 | |
legstar85 | 3:80c1eba78f9b | 173 | void sw2_isr() // SW2 event-triggered interrupt |
legstar85 | 3:80c1eba78f9b | 174 | { |
legstar85 | 3:80c1eba78f9b | 175 | g_sw2_flag = 1; // set flag in ISR |
legstar85 | 3:80c1eba78f9b | 176 | } |