Duncan & Kieran / Mbed 2 deprecated SmartClock

Final version, with changing analogue clock colours, Friday 11:20am

Dependencies:   MMA8451Q SPI_TFT_ILI9341 TFT_fonts mbed

Smart clock by Duncan and Kieran

Photo

http://www.imgur.com/SiyOshx.jpg

Equipment

  • PCB: FRDM-KL25Z
  • TFT Color Display: MI0283QT-9A
  • Buzzer
  • 3 x buttons
  • 3 x 2kΩ resistors and 1 x 100Ω resistor
  • Stripboard
  • Wires (stranded is preferable due to their flexibility)
  • USB to Mini-USB cable, and computer

Setup

PCB to TFT (Output)

FRDM-KL25ZMI0283QT-9A
P3V33.3V, IM1, IM2, IM3
GNDRD, IM0, LEDK
PTD5CS
PTD1RS
PTD0RST
PTD2SDI
PTD3SDO
PTA13WR
P5V_USB through 100Ω resistor (approx. 20mA)LEDA

The buzzer should be connected between PTA12 and ground.

Note: The resistance between P5V_USB and LEDA can be reduced to increase the brightness of the screen. However, resistors lower than 30Ω have not been tested, and may result in the current causing damage to the PCB.

PCB to Buttons (Inputs)

FRDM-KL25ZInput
PTA5Minute button
PTC8Hour button
PTC9Time change button - toggles between changing the alarm time and the clock time

Each button should be connected in series with a 2kΩ resistor between 3.3V and 0V, so that pressing the button switches between these two voltages.

Features

  • A digital clock, displayed in 24-hour format
  • An analogue clock, displaying the time in standard 12-hour format
  • Alarm can be changed using the minute and hour buttons
  • Time can be changed by holding the third button
  • Alarm will sound for one minute at the displayed time
  • Putting the alarm on its side will snooze the alarm if the alarm is going off (or just disable it if the alarm is not sounding)

main.cpp@5:f5fa116b57a1, 2017-05-24 (annotated)

Committer:
scat6490
Date:
Wed May 24 14:57:37 2017 +0000
Revision:
5:f5fa116b57a1
Parent:
4:2013f3158cc6
Child:
6:d80627e78bfd
Display, clock, alarm, time changing, Wednesday 3:55pm; Commented and small changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
scat6490 0:4fd6c8718206 1 #include "stdio.h"
scat6490 0:4fd6c8718206 2 #include "mbed.h"
scat6490 0:4fd6c8718206 3 #include "SPI_TFT_ILI9341.h"
scat6490 0:4fd6c8718206 4 #include "string"
scat6490 0:4fd6c8718206 5 #include "Arial12x12.h"
scat6490 0:4fd6c8718206 6 #include "Arial24x23.h"
scat6490 0:4fd6c8718206 7 #include "Arial28x28.h"
scat6490 0:4fd6c8718206 8 #include "font_big.h"
scat6490 0:4fd6c8718206 9
scat6490 5:f5fa116b57a1 10 Ticker timer; // Set up a timer
scat6490 5:f5fa116b57a1 11 DigitalOut buzzer(PTA12); // Set up inputs and outputs
scat6490 5:f5fa116b57a1 12 DigitalIn input1(PTA4); // Input for the minute button
scat6490 5:f5fa116b57a1 13 DigitalIn input60(PTC8); // Input for the hour button
scat6490 5:f5fa116b57a1 14 DigitalIn input_time_change(PTC9); // Input for the button which switches from changing the alarm and changing the time
scat6490 5:f5fa116b57a1 15 Serial pc(USBTX,USBRX); // Connection to the desktop, currently only used for debugging
scat6490 0:4fd6c8718206 16 SPI_TFT_ILI9341 TFT(PTD2, PTD3, PTD1, PTD5, PTD0, PTA13,"TFT"); // mosi, miso, sclk, cs, reset, dc for frdmkl25z
scat6490 0:4fd6c8718206 17
scat6490 5:f5fa116b57a1 18 int clock_minutes, clock_hours, clock_seconds = 0; // Initialise clock at 00:00.00
scat6490 5:f5fa116b57a1 19 int alarm_hours = 7; // Initialise alarm at 7am
scat6490 3:6a328c7e9b1c 20 int alarm_minutes = 0;
scat6490 1:a33f6ca5a5b3 21
scat6490 5:f5fa116b57a1 22 void timeup(){ // Function to increment the clock every second
scat6490 5:f5fa116b57a1 23 clock_seconds++; // Increment the time
scat6490 5:f5fa116b57a1 24 clock_seconds %= 60; // Reset seconds to 0 if it gets to 60
scat6490 4:2013f3158cc6 25
scat6490 4:2013f3158cc6 26 if (clock_seconds==0)
scat6490 4:2013f3158cc6 27 {
scat6490 5:f5fa116b57a1 28 clock_minutes++; // Add a minute if the seconds got reset
scat6490 5:f5fa116b57a1 29 clock_minutes %= 60; // Reset the minutes to 0 if it gets to 60
scat6490 4:2013f3158cc6 30 }
scat6490 4:2013f3158cc6 31 if (clock_minutes==0 && clock_seconds==0)
scat6490 4:2013f3158cc6 32 {
scat6490 5:f5fa116b57a1 33 clock_hours++; // Add an hour if the minutes got reset
scat6490 5:f5fa116b57a1 34 clock_hours %= 24; // Reset the hour to 0 if it gets to 24
scat6490 4:2013f3158cc6 35 }
scat6490 4:2013f3158cc6 36 }
scat6490 4:2013f3158cc6 37
scat6490 4:2013f3158cc6 38 void drawclock() // Draws an analogue clock using the clock_minutes and clock_hours variables
scat6490 4:2013f3158cc6 39 {
scat6490 5:f5fa116b57a1 40 int hourX, hourY, minuteX, minuteY, secondX, secondY; // Initialise variables to be used
scat6490 5:f5fa116b57a1 41 int circleX = 250; // Circle centre X
scat6490 4:2013f3158cc6 42 int circleY = 200; // Circle centre Y
scat6490 4:2013f3158cc6 43 int circleRadius = 30; // Circle radius
scat6490 4:2013f3158cc6 44
scat6490 4:2013f3158cc6 45 double factorH = (2 * 3.141) / 12; // Convert hour to radians
scat6490 4:2013f3158cc6 46 double factorM = (2 * 3.141) / 60; // Convert minute to radians
scat6490 5:f5fa116b57a1 47 double factorS = (2 * 3.141) / 60; // Convert second to radians
scat6490 4:2013f3158cc6 48
scat6490 5:f5fa116b57a1 49 hourX = floor(0.6 * circleRadius * sin((double) (clock_hours * factorH))); // Calculate difference in X values of the two ends of the hour hand.
scat6490 5:f5fa116b57a1 50 hourY = floor(0.6 * circleRadius * cos((double) (clock_hours * factorH))); // Same for Y of hour hand. The 0.9 means the hands are smaller than the circle
scat6490 5:f5fa116b57a1 51 minuteX = floor(0.95 * circleRadius * sin((double) (clock_minutes * factorM))); // Same for X of minute hand
scat6490 5:f5fa116b57a1 52 minuteY = floor(0.95 * circleRadius * cos((double) (clock_minutes * factorM))); // Same for Y of minute hand
scat6490 5:f5fa116b57a1 53 secondX = floor(0.85 * circleRadius * sin((double) (clock_seconds * factorS))); // Same for X of second hand
scat6490 5:f5fa116b57a1 54 secondY = floor(0.85 * circleRadius * cos((double) (clock_seconds * factorS))); // Same for Y of second hand
scat6490 4:2013f3158cc6 55
scat6490 4:2013f3158cc6 56 TFT.fillcircle(circleX, circleY, circleRadius, Red); // Draws a red circle
scat6490 5:f5fa116b57a1 57 TFT.circle(circleX, circleY, circleRadius, White); // Draws a red circle
scat6490 4:2013f3158cc6 58 TFT.line(circleX, circleY, circleX + hourX, circleY - hourY, White); // Draws the hour hand
scat6490 4:2013f3158cc6 59 TFT.line(circleX, circleY, circleX + minuteX, circleY - minuteY, White); // Draws the minute hand
scat6490 5:f5fa116b57a1 60 TFT.line(circleX, circleY, circleX + secondX, circleY - secondY, Black); // Draws the minute hand
scat6490 5:f5fa116b57a1 61
scat6490 5:f5fa116b57a1 62 for (int i = 0; i < 12; i++)
scat6490 5:f5fa116b57a1 63 {
scat6490 5:f5fa116b57a1 64 int timeX = floor(circleRadius * sin((double) (i * factorH))); // Calculate the X for the hour indicators around the edge
scat6490 5:f5fa116b57a1 65 int timeY = floor(circleRadius * cos((double) (i * factorH))); // Same for Y of the hour indicators
scat6490 5:f5fa116b57a1 66
scat6490 5:f5fa116b57a1 67 TFT.line(circleX + 0.8 * timeX, circleY - 0.8 * timeY, circleX + timeX, circleY - timeY, White); // Draws the hour indicators
scat6490 5:f5fa116b57a1 68 }
scat6490 1:a33f6ca5a5b3 69 }
scat6490 1:a33f6ca5a5b3 70
scat6490 0:4fd6c8718206 71 int main()
scat6490 0:4fd6c8718206 72 {
scat6490 5:f5fa116b57a1 73 wait(0.2); // Just wait for set up
scat6490 3:6a328c7e9b1c 74
scat6490 5:f5fa116b57a1 75 TFT.set_orientation(1); // Make the display horizontal
scat6490 5:f5fa116b57a1 76 TFT.background(Black); // Set background to black
scat6490 5:f5fa116b57a1 77 TFT.foreground(White); // Set text to white
scat6490 5:f5fa116b57a1 78 TFT.cls(); // Clear screen
scat6490 0:4fd6c8718206 79
scat6490 5:f5fa116b57a1 80 TFT.set_font((unsigned char*) Arial12x12); // Set the font to Arial 12x12
scat6490 5:f5fa116b57a1 81 TFT.fillrect(0, 0, 320, 32, Red); // Draw a red rectangle at the top
scat6490 5:f5fa116b57a1 82 TFT.locate(10, 10); // Move the text location
scat6490 5:f5fa116b57a1 83 TFT.printf("Clock by Duncan and Kieran"); // Write some text in the box at the top
scat6490 0:4fd6c8718206 84
scat6490 5:f5fa116b57a1 85 TFT.background(Black); // Set background to black
scat6490 5:f5fa116b57a1 86 TFT.set_font((unsigned char*) Arial28x28); // Set the font to Arial 28x28
scat6490 0:4fd6c8718206 87
scat6490 5:f5fa116b57a1 88 timer.attach(&timeup, 1); // Set up the timer so it increments every second
scat6490 1:a33f6ca5a5b3 89
scat6490 3:6a328c7e9b1c 90 while(1) {
scat6490 5:f5fa116b57a1 91 if (input_time_change) // Check if the toggle switch is pressed to change which time the other buttons adjust (pressed changes the time, unpressed changes the alarm)
scat6490 3:6a328c7e9b1c 92 {
scat6490 5:f5fa116b57a1 93 switch(input1){ // Check if the minute button is pressed
scat6490 3:6a328c7e9b1c 94 case 1:
scat6490 5:f5fa116b57a1 95 clock_minutes++; // Increment the time minutes
scat6490 5:f5fa116b57a1 96 clock_minutes %= 60; // Set the minutes back to 0 if it's 60
scat6490 5:f5fa116b57a1 97 wait(0.2); // Wait so the time doesn't increase too fast
scat6490 5:f5fa116b57a1 98 break;
scat6490 3:6a328c7e9b1c 99 case 0:
scat6490 5:f5fa116b57a1 100 break;
scat6490 3:6a328c7e9b1c 101 }
scat6490 5:f5fa116b57a1 102 switch(input60){ // Check if the hour button is pressed
scat6490 3:6a328c7e9b1c 103 case 1:
scat6490 5:f5fa116b57a1 104 clock_hours++; // Increment the time hours
scat6490 5:f5fa116b57a1 105 clock_hours %= 24; // Set the hours back to 0 if it's 24
scat6490 5:f5fa116b57a1 106 wait(0.2); // Wait so the time doesn't increase too fast
scat6490 3:6a328c7e9b1c 107 break;
scat6490 3:6a328c7e9b1c 108 case 0:
scat6490 3:6a328c7e9b1c 109 break;
scat6490 3:6a328c7e9b1c 110 }
scat6490 3:6a328c7e9b1c 111 } else
scat6490 3:6a328c7e9b1c 112 {
scat6490 5:f5fa116b57a1 113 switch(input1){ // Check if the minute button is pressed
scat6490 3:6a328c7e9b1c 114 case 1:
scat6490 5:f5fa116b57a1 115 alarm_minutes++; // Increment the alarm minutes
scat6490 5:f5fa116b57a1 116 alarm_minutes %= 60; // Set the minutes back to 0 if it's 60
scat6490 5:f5fa116b57a1 117 wait(0.2); // Wait so the alarm time doesn't increase too fast
scat6490 3:6a328c7e9b1c 118 break;
scat6490 3:6a328c7e9b1c 119 case 0:
scat6490 3:6a328c7e9b1c 120 break;
scat6490 3:6a328c7e9b1c 121 }
scat6490 5:f5fa116b57a1 122 switch(input60){ // Check if the hour button is pressed
scat6490 3:6a328c7e9b1c 123 case 1:
scat6490 5:f5fa116b57a1 124 alarm_hours++; // Increment the alarm hours
scat6490 5:f5fa116b57a1 125 alarm_hours %= 24; // Set the hours back to 0 if it's 24
scat6490 5:f5fa116b57a1 126 wait(0.2); // Wait so the alarm time doesn't increase too fast
scat6490 3:6a328c7e9b1c 127 break;
scat6490 3:6a328c7e9b1c 128 case 0:
scat6490 3:6a328c7e9b1c 129 break;
scat6490 3:6a328c7e9b1c 130 }
scat6490 1:a33f6ca5a5b3 131 }
scat6490 1:a33f6ca5a5b3 132
scat6490 5:f5fa116b57a1 133 if (clock_hours == alarm_hours && clock_minutes == alarm_minutes && (clock_seconds % 2) == 0) // Check if the time is equal to the alarm time, and the seconds is even
scat6490 2:21c4f254786f 134 {
scat6490 5:f5fa116b57a1 135 buzzer = 1; // Buzz
scat6490 5:f5fa116b57a1 136
scat6490 2:21c4f254786f 137 } else
scat6490 2:21c4f254786f 138 {
scat6490 5:f5fa116b57a1 139 buzzer = 0; // Don't buzz
scat6490 2:21c4f254786f 140 }
scat6490 1:a33f6ca5a5b3 141
scat6490 5:f5fa116b57a1 142 TFT.locate(30, 70); // Move the text location
scat6490 5:f5fa116b57a1 143 TFT.printf("Time: %02d:%02d.%02d", clock_hours, clock_minutes, clock_seconds); // Write the time to the TFT
scat6490 3:6a328c7e9b1c 144
scat6490 5:f5fa116b57a1 145 TFT.locate(30, 120); // Move the text location
scat6490 5:f5fa116b57a1 146 TFT.printf("Alarm: %02d:%02d", alarm_hours, alarm_minutes); // Write the alarm time to the TFT
scat6490 3:6a328c7e9b1c 147
scat6490 5:f5fa116b57a1 148 drawclock(); // Call a function to draw the analogue clock
scat6490 0:4fd6c8718206 149 }
scat6490 0:4fd6c8718206 150
scat6490 0:4fd6c8718206 151 }