(DA) Internet of Things and Smart Electronics- ELE3006M2122
New version - adding of lights/controls to temperature monitoring
Dependencies: mbed N5110v02 TMP102 JoystickIoT
Diff: main.cpp
- Revision:
- 3:80c1eba78f9b
- Parent:
- 2:e0091b5311f1
- Child:
- 4:0090145b3286
diff -r e0091b5311f1 -r 80c1eba78f9b main.cpp
--- a/main.cpp Fri Dec 17 08:34:45 2021 +0000
+++ b/main.cpp Tue Dec 21 17:12:38 2021 +0000
@@ -1,6 +1,5 @@
/* * Print String
* @ File main.cpp
-* Prints a string of characters to the screen buffer, string is cut off after the 83rd pixel.
* @param x - the column number (0 to 83)
* @param y - the row number (0-5) - the display is split into 6 banks - each bank can be considered a row
* @author - David Leaming - 25574043
@@ -23,6 +22,8 @@
// VCC,SCE,RST,D/C,MOSI,SCLK,LED
N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // Create Screen Object - K64F - pwr from 3V3, GND Pin also needs connecting
+// y x button
+Joystick joystick(PTB10,PTB11,PTC16); // Define Joystick Object
Serial pc(USBTX,USBRX); // UART connection for PC
@@ -30,55 +31,103 @@
DigitalOut g_led(LED_GREEN); // K64F on-board LEDs
DigitalOut b_led(LED_BLUE); // K64F on-board LEDs
+DigitalOut LED01 (PTA1); // PCB Surface Mounted LED's - LED1
+DigitalOut LED02 (PTA2); // PCB Surface Mounted LED's - LED2
+DigitalOut LED03 (PTC2); // PCB Surface Mounted LED's - LED3
+DigitalOut LED04 (PTC3); // PCB Surface Mounted LED's - LED4
+DigitalOut LED05 (PTC4); // PCB Surface Mounted LED's - LED5
+DigitalOut LED06 (PTD3); // PCB Surface Mounted LED's - LED6
+
InterruptIn sw2(SW2); // K64F on-board switches
InterruptIn sw3(SW3); // K64F on-board switches
+InterruptIn ButtonA (PTB9); // PCB Button - A
+InterruptIn ButtonB (PTD0); // PCB Button - B
+
+volatile int g_ButtonA_flag=0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
+volatile int g_ButtonB_flag=0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
+volatile int g_sw2_flag=0; // flag - must be volatile as changes within ISR - g_ prefix makes it easier to distinguish it as global
void error(); // error function hangs flashing an LED
void init_serial(); // setup serial port
void init_K64F(); // set-up the on-board LEDs and switches
+void init_PCB(); // set-up the PCB LEDs and buttons
+void ButtonA_isr();
+void ButtonB_isr();
+void sw2_isr();
int main()
{
init_K64F(); // initialise the board
init_serial(); // initialise the serial port
-
+ init_PCB(); // initialise the PCB
+
tmp102.init(); // call the sensor init method using dot syntax
lcd.init(); // initialise display
+ joystick.init(); // initialise joystick
+
+ 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
+ ButtonA.rise(&ButtonA_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for
+ ButtonB.rise(&ButtonB_isr); // External push button, pin set to 0V by pull down command, means a rising edge is looked for
lcd.setContrast(0.5); // change set contrast in range 0.0 to 1.0
+ char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
+
+ lcd.clear(); // clear buffer at start of every loop
+ lcd.printString("Smart Cold",0,0); // can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display)
+ lcd.printString("Storage",0,1); // Just a welcome message before auto moving to main menu
+ lcd.printString("Monitoring",0,2);
+ lcd.printString("",0,2); // Blank Line
+ lcd.printString("V1.0 - 2021",0,4);
+ lcd.printString("David Leaming",0,5);
+ lcd.refresh(); // need to refresh display after setting pixels or writing strings
+ wait(5.0); // leave welcome screen on for designated amount of time
+ lcd.clear(); // clear buffer at start of every loop
+ lcd.refresh(); // need to refresh display after setting pixels or writing strings
+ lcd.printString("Use Joystick",0,0); // Instruction for use of menu
+ lcd.printString("To Navigate",0,1);
+ lcd.printString("",0,2); // Blank Line
+ lcd.printString("A = Select",0,3);
+ lcd.printString("B = Back",0,4);
+ lcd.refresh(); // need to refresh display after setting pixels or writing strings
+ wait(5.0);
+
+ MainMenu: // Initial Main Menu Creation to allow mode to be selected
+
+
+
while (1) {
lcd.normalMode(); // normal colour mode
lcd.setBrightness(0.5); // put LED backlight on 50%
lcd.clear(); // clear buffer at start of every loop
-
- char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14)
-
-
- int temperature = 27;
- int length = sprintf(buffer,"T = %2d C",temperature); // print formatted data to buffer - it is important the format specifier ensures the length will fit in the buffer
- if (length <= 14) // if string will fit on display (assuming printing at x=0)
- lcd.printString(buffer,0,1); // display on screen
-
- float pressure = 1012.3; // same idea with floats
- length = sprintf(buffer,"P = %.2f mb",pressure);
- if (length <= 14)
- lcd.printString(buffer,0,2);
-
- lcd.refresh(); // need to refresh display after setting pixels or writing strings
- wait(2.0);
-
- lcd.clear(); // clear buffer at start of every loop
lcd.refresh(); // need to refresh display after setting pixels or writing strings
- wait(0.5);
float T = tmp102.get_temperature(); // read temperature and print to lcd
- length = sprintf(buffer,"T = %.2f C",T);
- if (length <= 14)
- lcd.printString(buffer,0,2);
+ 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
+ if (length <= 14) // if string will fit on display (assuming printing at x=0)
+ lcd.printString(buffer,0,2); // display on screen
lcd.refresh(); // need to refresh display after setting pixels or writing strings
wait(2.0);
+
+ if (g_ButtonA_flag) { // check if flag i.e. interrupt has occured
+ g_ButtonA_flag = 0; // if it has, clear the flag
+
+ printf("Button A Press \n"); // send message over serial port - can observe in CoolTerm etc.
+ LED01=0;
+ wait(5.0);
+ LED01=1;
+ }
+
+ if (g_ButtonB_flag) { // check if flag i.e. interrupt has occured
+ g_ButtonB_flag = 0; // if it has, clear the flag
+
+ printf("Button B Press \n"); // send message over serial port - can observe in CoolTerm etc.
+ LED02=0;
+ wait(5.0);
+ LED02=1;
+
+ }
}
@@ -98,3 +147,32 @@
sw3.mode(PullNone); // resistors that are enabled by default using InterruptIn
}
+
+void init_PCB ()
+{
+ LED01 = 1; // PCB surface mounted LED's are active low - write a 1 to turn them off initiallly
+ LED02 = 1;
+ LED03 = 1;
+ LED04 = 1;
+ LED05 = 1;
+ LED06 = 1;
+
+ ButtonA.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed
+ ButtonB.mode(PullDown); // Set pin to Pull Down to OV, meaning that a rising edge is looked for when button is pressed
+
+}
+
+void ButtonA_isr() // ButtonA event-triggered interrupt
+{
+ g_ButtonA_flag = 1; // set flag in ISR
+}
+
+void ButtonB_isr() // ButtonB event-triggered interrupt
+{
+ g_ButtonB_flag = 1; // set flag in ISR
+}
+
+void sw2_isr() // SW2 event-triggered interrupt
+{
+ g_sw2_flag = 1; // set flag in ISR
+}
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