Nashwin Bharwani
A digital clock that can display a date and time using a Persistence of Vision Display
Dependencies: NeoStrip mbed-rtos mbed
Diff: main.cpp
- Revision:
- 0:cf5f2628c1a0
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Apr 29 11:59:02 2016 +0000
@@ -0,0 +1,415 @@
+#include "mbed.h"
+#include "rtos.h"
+#include "NeoStrip.h"
+
+#define N 24
+#define NUM_WIDTH 5
+#define NUM_HEIGHT 7
+#define CHARACTER_SIZE 7
+#define WAIT_TIME 600
+
+DigitalIn hall1(p15);
+DigitalIn hall2(p16);
+
+DigitalOut myled(LED1);
+NeoStrip strip1(p11, N);
+Serial usb(USBTX, USBRX);
+//134125 = move backwards slowly
+//135000 = move backwards slowly
+//140000 = move forwards quickly
+//136000 = move forward slowly
+//135500 = move backwards slowly
+//135750 = move backwards slowly
+volatile int motor_speed_us = 135750;
+volatile int one_degree_time = motor_speed_us/360;
+
+volatile int startSeconds = 0;
+volatile int startMinutes = 0;
+volatile int startHours = 8;
+
+time_t seconds;
+
+int drawCharacter(char* character, int startNum_time, int startPos);
+
+char zero [5] = {0b0000000, 0b0111110, 0b1000001, 0b1000001, 0b0111110};
+char one [5] = {0b0000000, 0b0000000, 0b0100001, 0b1111111, 0b0000001};
+char two [5] = {0b0000000, 0b0100011, 0b1000101, 0b1001001, 0b0110001};
+char three [5] = {0b0000000, 0b1000001, 0b1001001, 0b1001001, 0b0110110};
+char four [5] = {0b0000000, 0b1111000, 0b0001000, 0b0001000, 0b1111111};
+char five [5] = {0b0000000, 0b1110010, 0b1001001, 0b1001001, 0b1000110};
+char six [5] = {0b0000000, 0b0111110, 0b1001001, 0b1001001, 0b0100110};
+char seven [5] = {0b0000000, 0b1000000, 0b1000111, 0b1011000, 0b1100000};
+char eight [5] = {0b0000000, 0b0110110, 0b1001001, 0b1001001, 0b0110110};
+char nine [5] = {0b0000000, 0b0110000, 0b1001001, 0b1001001, 0b0111110};
+char colon [5] = {0b0000000, 0b0000000, 0b0110110, 0b0110110, 0b0000000};
+
+char A [5] = {0b0111111, 0b1001000, 0b1001000, 0b1001000, 0b0111111};
+char P [5] = {0b1111111, 0b1001000, 0b1001000, 0b1001000, 0b0110000};
+char R [5] = {0b1111111, 0b1001000, 0b1001000, 0b1001100, 0b0110011};
+char space [5] = {0b0000000, 0b0000000, 0b0000000, 0b0000000, 0b0000000};
+
+
+
+Timer t;
+Timer time_tracker;
+
+//Will be issues of random orientation of the clock. Fix the issue with resynchronization using the magnet
+
+void LEDstrip1_thread(void const *args)
+{
+ t.start();
+ time_tracker.start();
+
+ int startNum_time = 50*one_degree_time - NUM_WIDTH/2;
+ int endNum_time = 50*one_degree_time + NUM_WIDTH/2;
+
+ bool wroteThisRotation = false;
+
+ strip1.setPixel(23, (uint8_t) 10,(uint8_t) 50,(uint8_t) 50);
+ strip1.setPixel(22, (uint8_t) 20,(uint8_t) 200,(uint8_t) 50);
+ strip1.setPixel(14,(uint8_t) 20,(uint8_t) 200,(uint8_t) 20);
+ strip1.setPixel(13,(uint8_t) 10,(uint8_t) 50,(uint8_t) 50);
+ strip1.setPixel(12,(uint8_t) 20,(uint8_t) 200,(uint8_t) 20);
+ strip1.setPixel(3, (uint8_t) 10,(uint8_t) 50,(uint8_t) 50);
+ strip1.setPixel(4, (uint8_t) 20,(uint8_t) 200,(uint8_t) 50);
+ while(1) {
+
+ int time = t.read_us();
+
+ if (time > startNum_time && !wroteThisRotation) {
+
+
+ int seconds = ((int)time_tracker.read() + startSeconds)%60;
+ int minutes = ((int)time_tracker.read()/60 + startMinutes)%60;
+ int hours = ((int)time_tracker.read()/3600 + startHours)%24;
+ bool AM = true;
+ if (hours >= 12) {
+ AM = false;
+ }
+ int printHours = hours % 12;
+ if (printHours == 0) {
+ printHours = 12;
+ }
+
+ char buf [10];
+ sprintf(buf, "%02i:%02i:%02i", hours, minutes, seconds);
+
+ for (int i = 8; i > 0; i--) {
+ if (buf[i] == '0') {
+ endNum_time = drawCharacter(zero, endNum_time,21);
+ } else if (buf[i] == '1') {
+ endNum_time = drawCharacter(one, endNum_time,21);
+ } else if (buf[i] == '2') {
+ endNum_time = drawCharacter(two, endNum_time,21);
+ } else if (buf[i] == '3') {
+ endNum_time = drawCharacter(three, endNum_time,21);
+ } else if (buf[i] == '4') {
+ endNum_time = drawCharacter(four, endNum_time,21);
+ } else if (buf[i] == '5') {
+ endNum_time = drawCharacter(five, endNum_time,21);
+ } else if (buf[i] == '6') {
+ endNum_time = drawCharacter(six, endNum_time,21);
+ } else if (buf[i] == '7') {
+ endNum_time = drawCharacter(seven, endNum_time,21);
+ } else if (buf[i] == '8') {
+ endNum_time = drawCharacter(eight, endNum_time,21);
+ } else if (buf[i] == '9') {
+ endNum_time = drawCharacter(nine, endNum_time,21);
+ } else if (buf[i] == ':') {
+ endNum_time = drawCharacter(colon, endNum_time,21);
+ }
+ }
+
+ char date[15];
+ sprintf(date,"APR 29 2016");
+
+ for (int i = 12; i >= 0; i--) {
+ if (date[i] == '0') {
+ endNum_time = drawCharacter(zero, endNum_time,11);
+ } else if (date[i] == '1') {
+ endNum_time = drawCharacter(one, endNum_time,11);
+ } else if (date[i] == '2') {
+ endNum_time = drawCharacter(two, endNum_time,11);
+ } else if (date[i] == '3') {
+ endNum_time = drawCharacter(three, endNum_time,11);
+ } else if (date[i] == '4') {
+ endNum_time = drawCharacter(four, endNum_time,11);
+ } else if (date[i] == '5') {
+ endNum_time = drawCharacter(five, endNum_time,11);
+ } else if (date[i] == '6') {
+ endNum_time = drawCharacter(six, endNum_time,11);
+ } else if (date[i] == '7') {
+ endNum_time = drawCharacter(seven, endNum_time,11);
+ } else if (date[i] == '8') {
+ endNum_time = drawCharacter(eight, endNum_time,11);
+ } else if (date[i] == '9') {
+ endNum_time = drawCharacter(nine, endNum_time,11);
+ } else if (date[i] == ':') {
+ endNum_time = drawCharacter(colon, endNum_time,11);
+ } else if (date[i] == 'A') {
+ endNum_time = drawCharacter(A, endNum_time,11);
+ } else if (date[i] == 'P') {
+ endNum_time = drawCharacter(P, endNum_time,11);
+ } else if (date[i] == 'R') {
+ endNum_time = drawCharacter(R, endNum_time,11);
+ } else if (date[i] == ' ') {
+ endNum_time = drawCharacter(space, endNum_time,11);
+ }
+ }
+ wroteThisRotation = true;
+ }
+ if (t.read_us() > motor_speed_us) {
+ t.reset();
+ //usb.printf("wroteThisRotation\n\r");
+ wroteThisRotation = false;
+ }
+ }
+}
+int drawCharacter(char* printable_number, int startNum_time, int startPos)
+{
+
+ int time = t.read_us();
+
+ int number_column_repeats = CHARACTER_SIZE/NUM_WIDTH;
+ int count_num_trans = NUM_WIDTH - 1;
+
+ int transitionNum_time = startNum_time + number_column_repeats*one_degree_time;
+ int endNum_time = startNum_time + number_column_repeats*one_degree_time*NUM_WIDTH;
+
+
+ for (int i = 0; i < NUM_HEIGHT; i++) {
+ int litPixel = (printable_number[count_num_trans] & (1 << i))>>i;
+ strip1.setPixel(startPos-i, (uint8_t)0*litPixel,(uint8_t)0*litPixel,(uint8_t)100*litPixel);
+ //(uint8_t)0,(uint8_t)0,(uint8_t)40
+ //(uint8_t) 10*litPixel,(uint8_t) 50*litPixel,(uint8_t) 50*litPixel)
+ }
+
+
+ strip1.write();
+ //usb.printf("printable_number[%i] = %i", count_num_trans, printable_number[count_num_trans] );
+ count_num_trans = count_num_trans - 1;
+ wait_us(WAIT_TIME);
+ while (count_num_trans >= 0) {
+
+ //usb.printf("Attempting to print column %i bottom: %i\r\n", count_num_trans, printable_number[count_num_trans]);
+
+ for (int i = 0; i < NUM_HEIGHT; i++) {
+ int litPixel = (printable_number[count_num_trans] & (1 << i))>>i;
+ strip1.setPixel(startPos-i, (uint8_t)0*litPixel,(uint8_t)0*litPixel,(uint8_t)100*litPixel);
+ }
+
+
+
+ strip1.write();
+
+ count_num_trans = count_num_trans - 1;
+ transitionNum_time = (transitionNum_time + number_column_repeats*one_degree_time);
+ //wroteMiddle = true;
+ }
+ wait_us(WAIT_TIME);
+
+ //usb.printf("Number is finished printing\r\n");
+
+ for (int i = startPos; i > startPos-NUM_HEIGHT; i--) {
+
+ strip1.setPixel(i, 0,0,0);
+ }
+
+// strip1.setPixel(22, 0,0,0);
+// strip1.setPixel(21, 0,0,0);
+// strip1.setPixel(20, 0,0,0);
+// strip1.setPixel(19, 0,0,0);
+// strip1.setPixel(18, 0,0,0);
+//
+ strip1.write();
+ endNum_time = (endNum_time + one_degree_time) % motor_speed_us;
+ transitionNum_time = (startNum_time + one_degree_time*number_column_repeats) % motor_speed_us;
+ count_num_trans = NUM_WIDTH - 1;
+ wait_us(WAIT_TIME);
+
+ return endNum_time;
+}
+
+
+void HallEffect_thread(void const *args)
+{
+ bool sensesMagnet = false;
+
+ hall1.mode(PullUp);
+ hall2.mode(PullUp);
+ Thread::wait(10);
+
+ while(1) {
+ if (!sensesMagnet && (hall1 == 0 || hall2 == 0)) {
+ sensesMagnet = true;
+ t.reset();
+ } else if (sensesMagnet && hall1 == 1 && hall2 == 1) {
+ sensesMagnet = false;
+ }
+ }
+}
+
+
+
+
+int main()
+{
+
+ float brightness = 0.05f;
+ strip1.setBrightness(brightness);
+
+ for (int i = 0; i < N; i++) {
+ strip1.setPixel(i,0,0,0);
+ }
+
+ strip1.setPixel(1,0,(uint8_t)255,0);
+ strip1.write();
+
+ set_time(1461931200);
+ seconds = time(NULL); // get current time from mbed RTC
+
+ Thread thread2(LEDstrip1_thread);
+ Thread thread3(HallEffect_thread);
+
+ thread2.set_priority(osPriorityRealtime);
+ while(1) {
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+ wait(0.2);
+ }
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+// if (time < transitionNum_time && time > endNum_time) {
+//
+//
+// usb.printf("Attempting to print column %i top: %i\r\n", count_num_trans, printable_number[count_num_trans]);
+//
+// int led22 = printable_number [count_num_trans] & 0x01;
+// int led21 = (printable_number [count_num_trans] & 0x02)>>1;
+// int led20 = (printable_number [count_num_trans] & 0x04)>>2;
+// int led19 = (printable_number [count_num_trans] & 0x08)>>3;
+// int led18 = (printable_number [count_num_trans] & 0x10)>>4;
+//
+// strip1.setPixel(22, (uint8_t)(led22*255),0,0);
+// strip1.setPixel(21, (uint8_t)(led21*255),0,0);
+// strip1.setPixel(20, (uint8_t)(led20*255),0,0);
+// strip1.setPixel(19, (uint8_t)(led19*255),0,0);
+// strip1.setPixel(18, (uint8_t)(led18*255),0,0);
+//
+// strip1.write();
+//
+// count_num_trans = (count_num_trans + 1)%NUM_WIDTH;
+// transitionNum_time = (transitionNum_time + number_column_repeats*one_degree_time);
+// wroteMiddle = true;
+// }
+// } else {
+
+
+
+
+
+
+
+
+
+
+//
+//
+//
+//
+//
+// int time = t.read_us();
+//
+// int number_column_repeats = CHARACTER_SIZE/NUM_WIDTH;
+// int count_num_trans = 0;
+//
+// int transitionNum_time = startNum_time + number_column_repeats*one_degree_time;
+// int endNum_time = startNum_time + number_column_repeats*one_degree_time*NUM_WIDTH;
+//
+// usb.printf("startNum_time: %i\r\n", startNum_time);
+// usb.printf("transitionNum_time: %i\r\n", transitionNum_time);
+// usb.printf("endNum_time: %i\r\n", endNum_time);
+//
+// int led22 = printable_number [count_num_trans] & 0x01;
+// int led21 = (printable_number [count_num_trans] & 0x02)>>1;
+// int led20 = (printable_number [count_num_trans] & 0x04)>>2;
+// int led19 = (printable_number [count_num_trans] & 0x08)>>3;
+// int led18 = (printable_number [count_num_trans] & 0x10)>>4;
+//
+// strip1.setPixel(22, (uint8_t)(led22*255),0,0);
+// strip1.setPixel(21, (uint8_t)(led21*255),0,0);
+// strip1.setPixel(20, (uint8_t)(led20*255),0,0);
+// strip1.setPixel(19, (uint8_t)(led19*255),0,0);
+// strip1.setPixel(18, (uint8_t)(led18*255),0,0);
+//
+// strip1.write();
+// usb.printf("printable_number[%i] = %i", count_num_trans, printable_number[count_num_trans] );
+// count_num_trans = count_num_trans + 1;
+//
+// while (count_num_trans < NUM_WIDTH) {
+// int time = t.read_us();
+// if (time > transitionNum_time) {
+//
+//
+// usb.printf("Attempting to print column %i bottom: %i\r\n", count_num_trans, printable_number[count_num_trans]);
+//
+// int led22 = printable_number [count_num_trans] & 0x01;
+// int led21 = (printable_number [count_num_trans] & 0x02)>>1;
+// int led20 = (printable_number [count_num_trans] & 0x04)>>2;
+// int led19 = (printable_number [count_num_trans] & 0x08)>>3;
+// int led18 = (printable_number [count_num_trans] & 0x10)>>4;
+//
+// strip1.setPixel(22, (uint8_t)(led22*255),0,0);
+// strip1.setPixel(21, (uint8_t)(led21*255),0,0);
+// strip1.setPixel(20, (uint8_t)(led20*255),0,0);
+// strip1.setPixel(19, (uint8_t)(led19*255),0,0);
+// strip1.setPixel(18, (uint8_t)(led18*255),0,0);
+//
+// strip1.write();
+//
+// count_num_trans = count_num_trans + 1;
+// transitionNum_time = (transitionNum_time + number_column_repeats*one_degree_time);
+// //wroteMiddle = true;
+// }
+// }
+// bool wroteEnd = false;
+//
+// while (!wroteEnd){
+// // usb.printf("end time %i, current time: %i \r\n", endNum_time, time);
+// int time = t.read_us();
+//
+// if ( time > endNum_time) {
+// usb.printf("Number is finished printing\r\n");
+//
+// strip1.setPixel(22, 0,0,0);
+// strip1.setPixel(21, 0,0,0);
+// strip1.setPixel(20, 0,0,0);
+// strip1.setPixel(19, 0,0,0);
+// strip1.setPixel(18, 0,0,0);
+//
+// strip1.write();
+// endNum_time = (endNum_time + one_degree_time) % motor_speed_us;
+// transitionNum_time = (startNum_time + one_degree_time*number_column_repeats) % motor_speed_us;
+// count_num_trans = 0;
+// return endNum_time;
+//
+// }
+// }
+// return endNum_time;
+//}