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
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-KL25Z | MI0283QT-9A |
---|---|
P3V3 | 3.3V, IM1, IM2, IM3 |
GND | RD, IM0, LEDK |
PTD5 | CS |
PTD1 | RS |
PTD0 | RST |
PTD2 | SDI |
PTD3 | SDO |
PTA13 | WR |
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-KL25Z | Input |
---|---|
PTA5 | Minute button |
PTC8 | Hour button |
PTC9 | Time 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)
Diff: main.cpp
- Revision:
- 6:d80627e78bfd
- Parent:
- 5:f5fa116b57a1
- Child:
- 7:007d23438920
--- a/main.cpp Wed May 24 14:57:37 2017 +0000 +++ b/main.cpp Fri May 26 09:15:06 2017 +0000 @@ -1,4 +1,4 @@ -#include "stdio.h" +#include "stdio.h" // Import libraries to use #include "mbed.h" #include "SPI_TFT_ILI9341.h" #include "string" @@ -7,17 +7,17 @@ #include "Arial28x28.h" #include "font_big.h" -Ticker timer; // Set up a timer -DigitalOut buzzer(PTA12); // Set up inputs and outputs -DigitalIn input1(PTA4); // Input for the minute button +Ticker timer; // Set up a timer +DigitalOut buzzer(PTE30); // Set up inputs and outputs +DigitalIn input1(PTA5); // Input for the minute button DigitalIn input60(PTC8); // Input for the hour button DigitalIn input_time_change(PTC9); // Input for the button which switches from changing the alarm and changing the time Serial pc(USBTX,USBRX); // Connection to the desktop, currently only used for debugging SPI_TFT_ILI9341 TFT(PTD2, PTD3, PTD1, PTD5, PTD0, PTA13,"TFT"); // mosi, miso, sclk, cs, reset, dc for frdmkl25z int clock_minutes, clock_hours, clock_seconds = 0; // Initialise clock at 00:00.00 -int alarm_hours = 7; // Initialise alarm at 7am -int alarm_minutes = 0; +int alarm_hours = 7; // Initialise alarm hours as 07 +int alarm_minutes = 0; // Initialise alarm minutes as 00 so alarm is 07:00 void timeup(){ // Function to increment the clock every second clock_seconds++; // Increment the time @@ -31,7 +31,7 @@ if (clock_minutes==0 && clock_seconds==0) { clock_hours++; // Add an hour if the minutes got reset - clock_hours %= 24; // Reset the hour to 0 if it gets to 24 + clock_hours %= 24; // Reset the hour to 0 if it gets to 24` } } @@ -54,7 +54,7 @@ secondY = floor(0.85 * circleRadius * cos((double) (clock_seconds * factorS))); // Same for Y of second hand TFT.fillcircle(circleX, circleY, circleRadius, Red); // Draws a red circle - TFT.circle(circleX, circleY, circleRadius, White); // Draws a red circle + TFT.circle(circleX, circleY, circleRadius, White); // Draws a white circle around the red circle TFT.line(circleX, circleY, circleX + hourX, circleY - hourY, White); // Draws the hour hand TFT.line(circleX, circleY, circleX + minuteX, circleY - minuteY, White); // Draws the minute hand TFT.line(circleX, circleY, circleX + secondX, circleY - secondY, Black); // Draws the minute hand @@ -72,7 +72,7 @@ { wait(0.2); // Just wait for set up - TFT.set_orientation(1); // Make the display horizontal + TFT.set_orientation(3); // Make the display horizontal TFT.background(Black); // Set background to black TFT.foreground(White); // Set text to white TFT.cls(); // Clear screen @@ -88,7 +88,7 @@ timer.attach(&timeup, 1); // Set up the timer so it increments every second while(1) { - 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) + 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) { switch(input1){ // Check if the minute button is pressed case 1: @@ -129,7 +129,7 @@ break; } } - + 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 { buzzer = 1; // Buzz @@ -139,9 +139,10 @@ buzzer = 0; // Don't buzz } + TFT.foreground(White); // Set text to white TFT.locate(30, 70); // Move the text location TFT.printf("Time: %02d:%02d.%02d", clock_hours, clock_minutes, clock_seconds); // Write the time to the TFT - + TFT.locate(30, 120); // Move the text location TFT.printf("Alarm: %02d:%02d", alarm_hours, alarm_minutes); // Write the alarm time to the TFT