1
/* -*- mode: c++; compile-command: "BOARD=pro5v make"; -*- */
4
* Copyright (C) 2011 Tim Marston <edam@waxworlds.org>
5
* Copyright (C) 2011 Tim Marston <tim@ed.am> and Dan Marston.
6
7
* This file is part of propeller-clock (hereafter referred to as "this
7
* program"). See http://ed.am/software/arduino/propeller-clock for more
8
* program"). See http://ed.am/dev/software/arduino/propeller-clock for more
10
11
* This program is free software: you can redistribute it and/or modify
21
22
* along with this program. If not, see <http://www.gnu.org/licenses/>.
25
/******************************************************************************
29
* a PC fan is wired up to a 12V power supply
31
* the fan's SENSE (tachiometer) pin connected to pin 2 on the
34
* the pins 4 to 13 on the arduino should directly drive an LED (the
35
LED on pin 4 is in the centre of the clock face and the LED on pin
38
* if a longer hand (and a larger clock face) is desired, pin 4 can be
39
used to indirectly drive a transistor which in turn drives several
40
LEDs that turn on anf off in unison in the centre of the clock.
42
* a button should be attached to pin 3 that grounds it when pressed.
44
* A DS1307 remote clock is connected via I2C on analog pins 4 and 5.
46
Implementation details:
48
* for a schematic, see ../project/propeller-clock.sch.
50
* the timing of the drawing of the clock face is recalculated with
51
every rotation of the propeller.
53
* a PC fan actually sends 2 tachiometer pulses per revolution, so the
54
software skips every other one. This means that the clock may
55
appear upside-down if started with the propeller in the wrong
56
position. You will need to experiment to dicsover the position that
57
the propeller must be in when starting the clock.
61
* pressing the button cycles between variations of the current
64
* pressing and holding the button for a second cycles between display
65
modes (e.g., analogue and digital).
67
* pressing and holding the button for 5 seconds enters "time set"
68
mode. In this mode, the following applies:
69
- the field that is being set flashes
70
- pressing the button increments the field currently being set
71
- pressing and holding the button for a second cycles through the
72
fields that can be set
73
- pressing and holding the button for 5 seconds sets the time and
76
******************************************************************************/
82
#include "switcher_major_mode.h"
24
85
//_____________________________________________________________________________
40
101
static unsigned long segment_step_sub_step = 0;
41
102
static unsigned long segment_step_sub = 0;
43
// number of segments in a full display (rotation) is 60 (one per
44
// second) times the desired number of sub-divisions of a second
45
#define NUM_SEGMENTS ( 60 * 5 )
105
static Button button( 3 );
108
static int major_mode = 0;
110
#define MAX_MAJOR_MODES 5
113
static MajorMode *major_modes[ MAX_MAJOR_MODES ] = { 0 };
48
115
//_____________________________________________________________________________
52
// ISR to handle the pulses from the fan's tachiometer
53
void fanPulseHandler()
119
// perform button events
120
void doButtonEvents()
55
// the fan actually sends two pulses per revolution. These pulses
56
// may not be exactly evenly distributed around the rotation, so
57
// we can't recalculate times on every pulse. Instead, we ignore
58
// every other pulse so timings are based on a complete rotation.
59
static bool ignore = true;
122
// loop through pending events
123
while( int event = button.get_event() )
63
// set a new pulse time
64
new_pulse_at = micros();
129
major_modes[ major_mode ]->press();
134
major_modes[ major_mode ]->long_press();
138
// looooong press (change major mode)
140
if( ++major_mode >= MAX_MAJOR_MODES )
142
} while( major_modes[ major_mode ] == NULL );
143
major_modes[ major_mode ]->activate();
69
// draw a particular segment
151
// draw a display segment
70
152
void drawNextSegment( bool reset )
72
static unsigned int segment = 0;
73
if( reset ) segment = 0;
76
for( int a = 0; a < 10; a++ )
77
digitalWrite( a + 4, ( ( segment >> a ) & 1 )? HIGH : LOW );
154
// keep track of segment
156
static int segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
157
if( reset ) segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
159
static int segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
160
if( reset ) segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
164
Drawer &drawer = major_modes[ major_mode ]->get_drawer();
165
if( reset ) drawer.draw_reset();
166
drawer.draw( segment );
169
if( ++segment >= NUM_SEGMENTS ) segment = 0;
171
if( --segment < 0 ) segment = NUM_SEGMENTS - 1;
112
207
// work out the time that this segment should be displayed until
113
208
end_time += segment_step;
114
semgment_step_sub += semgment_step_sub_step;
115
if( semgment_step_sub >= NUM_SEGMENTS ) {
116
semgment_step_sub -= NUM_SEGMENTS;
209
segment_step_sub += segment_step_sub_step;
210
if( segment_step_sub >= NUM_SEGMENTS ) {
211
segment_step_sub -= NUM_SEGMENTS;
220
// ISR to handle the pulses from the fan's tachiometer
221
void fanPulseHandler()
223
// the fan actually sends two pulses per revolution. These pulses
224
// may not be exactly evenly distributed around the rotation, so
225
// we can't recalculate times on every pulse. Instead, we ignore
226
// every other pulse so timings are based on a complete rotation.
227
static bool ignore = true;
231
// set a new pulse time
232
new_pulse_at = micros();
133
245
for( int a = 4; a < 14; a++ )
134
246
pinMode( a, OUTPUT );
137
Serial.begin( 9600 );
248
// set up mode-switch button on pin 3
250
digitalWrite( 3, HIGH );
251
static int event_times[] = { 5, 500, 4000, 0 };
252
button.set_event_times( event_times );
254
// set up major modes
255
static SwitcherMajorMode switcher_major_mode;
257
major_modes[ mode++ ] = &switcher_major_mode;
258
major_modes[ 0 ]->activate();
144
265
// if there has been a new pulse, we'll be resetting the display
145
266
bool reset = new_pulse_at? true : false;
271
// only do this stuff at the start of a display cycle, to ensure
272
// that no state changes mid-display
275
// calculate segment times
276
calculateSegmentTimes();
278
// keep track of time
279
Time &time = Time::get_instance();
282
// perform button events
147
286
// draw this segment
148
287
drawNextSegment( reset );
150
// do we need to recalculate segment times?
152
calculateSegmentTimes();
154
289
// wait till it's time to draw the next segment
155
waitTillNextSegment( reset );
290
waitTillEndOfSegment( reset );
added
removed
src/propeller-clock.ino
