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:
- 4:2013f3158cc6
- Parent:
- 3:6a328c7e9b1c
- Child:
- 5:f5fa116b57a1
diff -r 6a328c7e9b1c -r 2013f3158cc6 main.cpp --- a/main.cpp Tue May 23 15:50:45 2017 +0000 +++ b/main.cpp Wed May 24 13:50:26 2017 +0000 @@ -9,23 +9,53 @@ #include "font_big.h" Ticker timer; -DigitalOut output_high1(PTA4); -DigitalOut output_high60(PTC8); DigitalOut buzzer(PTA12); -DigitalOut output_time_change(PTA2); -DigitalIn input1(PTA5); -DigitalIn input60(PTC9); -DigitalIn input_time_change(PTC2); +DigitalIn input1(PTA4); +DigitalIn input60(PTC8); +DigitalIn input_time_change(PTC9); Serial pc(USBTX,USBRX); SPI_TFT_ILI9341 TFT(PTD2, PTD3, PTD1, PTD5, PTD0, PTA13,"TFT"); // mosi, miso, sclk, cs, reset, dc for frdmkl25z int clock_minutes, clock_hours = 0; +int clock_seconds = 0; int alarm_hours = 7; int alarm_minutes = 0; void timeup(){ - clock_minutes = (clock_minutes + 1) % 60; - if (clock_minutes==0) (clock_hours++) % 24; + clock_seconds++; + clock_seconds %= 60; + + if (clock_seconds==0) + { + clock_minutes++; + clock_minutes %= 60; + } + if (clock_minutes==0 && clock_seconds==0) + { + clock_hours++; + clock_hours %= 24; + } +} + +// TODO: Add %02d to time ouputs, try font_big.h, comment every line, make sure the drawclock function works, fix the input_time_change and add seconds/precise timing +void drawclock() // Draws an analogue clock using the clock_minutes and clock_hours variables +{ + int hourX, hourY, minuteX, minuteY; // Initialise variables to be used + int circleX = 200; // Circle centre X + int circleY = 200; // Circle centre Y + int circleRadius = 30; // Circle radius + + double factorH = (2 * 3.141) / 12; // Convert hour to radians + double factorM = (2 * 3.141) / 60; // Convert minute to radians + + hourX = floor(0.9 * circleRadius * sin((double) (clock_hours * factorH))); // Calculate difference in X values of the two ends of the hour hand. + hourY = floor(0.9 * circleRadius * cos((double) (clock_hours * factorH))); // Same for Y of hour hand. The 0.9 means the hands are smaller than the circle + minuteX = floor(0.9 * circleRadius * sin((double) (clock_minutes * factorM))); // Same for X of minute hand + minuteY = floor(0.9 * circleRadius * cos((double) (clock_minutes * factorM))); // Same for Y of minute hand + + TFT.fillcircle(circleX, circleY, circleRadius, Red); // Draws a 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 } int main() @@ -34,12 +64,13 @@ wait(0.2); TFT.set_orientation(1); // Make it horizontal - TFT.background(Red); // Set background to black + TFT.background(Black); // Set background to black TFT.foreground(White); // Set text to white TFT.cls(); // Clear screen TFT.set_font((unsigned char*) Arial12x12); // Set the font TFT.fillrect(0, 0, 320, 30, Red); + TFT.locate(5, 5); TFT.printf("Clock by Duncan and Kieran"); wait(0.1); @@ -47,13 +78,10 @@ TFT.background(Black); // Set background to black TFT.set_font((unsigned char*) Arial28x28); // Set the font - output_time_change = 1; - output_high1 = 1; - output_high60 = 1; timer.attach(&timeup, 1); while(1) { - if (input_time_change == 1) + if (input_time_change) { switch(input1){ case 1: @@ -103,13 +131,15 @@ alarm_hours %= 24; TFT.locate(50, 50); - TFT.printf("Time: %d:%d ", clock_hours, clock_minutes); + TFT.printf("Time: %02d:%02d.%02d", clock_hours, clock_minutes, clock_seconds); TFT.locate(50, 100); - TFT.printf("Alarm: %d:%d ", alarm_hours, alarm_minutes); + TFT.printf("Alarm: %02d:%02d", alarm_hours, alarm_minutes); TFT.locate(50, 150); TFT.printf("%d ", (int) input_time_change); + + drawclock(); } }