To get this branch, use:
bzr branch
http://bzr.ed.am/elec/propeller-clock
« back to all changes in this revision
Viewing changes to src/propeller-clock.cc
- browse files at revision 89
- compare with another revision
- download diff
- download tarball
- view history from revision 89
- Committer: Tim Marston
- Date: 2012-05-18 14:55:12 UTC
- Revision ID: tim@ed.am-20120518145512-4dg4ble01d47a8z5
moved rount Time a bit, and passed _button to SettingsMajorMode so that it can
come in and out of send_interim mode
come in and out of send_interim mode
- files added:
- arduino.mk
- project
- src/modes
- test/fan-test
- test/fan-test/Makefile
- test/led-test
- test/led-test/Makefile
- test/phantom-button-presses
- test/phantom-button-presses/Makefile
- test/rtc-test
- test/rtc-test/Makefile
- test/rtc-test/util
- files removed:
- COPYING
- files renamed:
- Notes => notes
- propeller-clock/ => src/
- propeller-clock/propeller-clock.pde => src/propeller-clock.cc
- propeller-clock/utility/ => src/util/
- fan-test/ => test/
- fan-test/fan-test.pde => test/fan-test/fan-test.ino
- files modified:
- .bzrignore
added
removed
src/propeller-clock.cc
1
/* -*- mode: c++; compile-command: "make"; -*- */
1
2
/*
2
* propeller-clock.pde
3
* propeller-clock.ino
3
4
*
4
* Copyright (C) 2011 Tim Marston <edam@waxworlds.org>
5
* Copyright (C) 2011 Tim Marston <tim@ed.am> and Dan Marston.
5
6
*
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
8
9
* information.
9
10
*
10
11
* This program is free software: you can redistribute it and/or modify
23
24
24
25
/******************************************************************************
25
26
26
For a schematic, see propeller-clock.sch.
27
28
Set up as follows:
29
30
- a PC fan is wired up to the 12V supply.
31
32
- the fan's SENSE (tachiometer) pin is connected to pin 2 on the
33
arduino.
34
35
- the pins 4 to 13 on the arduino should directly drive an LED (the
36
LED on pin 4 is in the centre of the clock face and the LED on pin
37
13 is at the outside.
38
39
- if a longer hand (and a larger clock face) is desired, pin 4 can
40
be used to indirectly drive (via a MOSFET) multiple LEDs which
41
turn on and off in unison in the centre of the clock.
42
43
- a button should be attached to pin 3 that grounds it when pressed.
44
45
Implementation details:
46
47
- the timing of the drawing of the clock face is recalculated with
48
every rotation of the propeller (for maximum update speed).
49
50
- pressing the button cycles between display modes
51
52
- holding down the button for 2 seconds enters "set time" mode. In
53
this mode, the fan must be held still and the LEDs will indicate
54
what number is being entered for each time digit. Pressing the
55
button increments the current digit. Holding it down moves to the
56
next digit (or leaves "set time" mode when there are no more). In
57
order, the digits (with accepted values) are: hours-tens (0 to 2),
58
hours-ones (0 to 9), minutes-tens (0 to 5), minutes-ones (0 to 9).
27
Set up:
28
29
* a PC fan is wired up to a 12V power supply
30
31
* the fan's SENSE (tachometer) pin connected to pin 2 on the
32
Arduino.
33
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
36
13 is at the outside.
37
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 and off in unison in the centre of the clock.
41
42
* a button should be attached to pin 3 that grounds it when pressed.
43
44
* A DS1307 remote clock is connected via I2C on analogue pins 4 and 5.
45
46
Implementation details:
47
48
* for a schematic, see ../project/propeller-clock.sch.
49
50
* the timing of the drawing of the clock face is recalculated with
51
every rotation of the propeller.
52
53
* a PC fan actually sends 2 tachometer 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 discover the position that
57
the propeller must be in when starting the clock.
58
59
Usage instructions:
60
61
* pressing the button cycles between variations of the current
62
display mode.
63
64
* pressing and holding the button for a second cycles between display
65
modes (e.g., analogue and digital).
66
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
74
exits "time set" mode
59
75
60
76
******************************************************************************/
61
77
62
63
#include <Bounce.h>
78
#include "config.h"
79
#include "button.h"
80
#include "time.h"
81
#include "Arduino.h"
82
#include "modes/switcher_major_mode.h"
83
#include "modes/settings_major_mode.h"
84
#include "modes/analogue_clock_mode.h"
85
#include "modes/digital_clock_mode.h"
86
#include "modes/info_mode.h"
87
#include "modes/test_pattern_mode.h"
88
#include "text.h"
89
#include "text_renderer.h"
90
#include "common.h"
64
91
65
92
//_____________________________________________________________________________
66
93
// data
67
94
68
69
95
// when non-zero, the time (in microseconds) of a new fan pulse that
70
96
// has just occurred, which means that segment drawing needs to be
71
97
// restarted
72
static unsigned long new_pulse_at = 0;
98
static unsigned long _new_pulse_at = 0;
73
99
74
100
// the time (in microseconds) when the last fan pulse occurred
75
static unsigned long last_pulse_at = 0;
101
static unsigned long _last_pulse_at = 0;
76
102
77
103
// duration (in microseconds) that a segment should be displayed
78
static unsigned long segment_step = 0;
104
static unsigned long _segment_step = 0;
79
105
80
106
// remainder after divisor and a tally of the remainders for each segment
81
static unsigned long segment_step_sub_step = 0;
82
static unsigned long segment_step_sub = 0;
83
84
// flag to indicate that the drawing mode should be cycled to the next one
85
static bool inc_draw_mode = false;
86
87
// a bounce-managed button
88
static Bounce button( 3, 5 );
89
90
// the time
91
static int time_hours = 0;
92
static int time_minutes = 0;
93
static int time_seconds = 0;
94
95
// number of segments in a full display (rotation) is 60 (one per
96
// second) times the desired number of sub-divisions of a second
97
#define NUM_SECOND_SEGMENTS 5
98
#define NUM_SEGMENTS ( 60 * NUM_SECOND_SEGMENTS )
107
static unsigned long _segment_step_sub_step = 0;
108
static unsigned long _segment_step_sub = 0;
109
110
// the button
111
static Button _button( 3 );
112
113
// major modes
114
static MajorMode *_modes[ 3 ];
115
116
// current major mode
117
static int _mode = 0;
99
118
100
119
//_____________________________________________________________________________
101
120
// code
102
121
103
104
// check for button presses
105
void checkButtons()
106
{
107
// update buttons
108
button.update();
109
110
// notice button presses
111
if( button.risingEdge() )
112
inc_draw_mode = true;
113
}
114
115
116
// keep track of time
117
void trackTime()
118
{
119
// previous time and any carried-over milliseconds
120
static unsigned long last_time = millis();
121
static unsigned long carry = 0;
122
123
// how many milliseonds have elapsed since we last checked?
124
unsigned long next_time = millis();
125
unsigned long delta = next_time - last_time + carry;
126
127
// update the previous time and carried-over milliseconds
128
last_time = next_time;
129
carry = delta % 1000;
130
131
// add the seconds that have passed to the time
132
time_seconds += delta / 1000;
133
while( time_seconds >= 60 ) {
134
time_seconds -= 60;
135
time_minutes++;
136
if( time_minutes >= 60 ) {
137
time_minutes -= 60;
138
time_hours++;
139
if( time_hours >= 24 )
140
time_hours -= 24;
122
// perform button events
123
void do_button_events()
124
{
125
// loop through pending events
126
while( int event = _button.get_event() )
127
{
128
switch( event )
129
{
130
case 1:
131
// short press
132
_modes[ _mode ]->press();
133
break;
134
case 2:
135
// long press
136
_modes[ _mode ]->long_press();
137
break;
138
case 3:
139
// looooong press (change major mode)
140
_modes[ _mode ]->deactivate();
141
if( !_modes[ ++_mode ] ) _mode = 0;
142
_modes[ _mode ]->activate();
143
break;
141
144
}
142
145
}
143
146
}
144
147
145
148
146
// draw a segment for the test display
147
void drawNextSegment_test( bool reset )
149
// draw a display segment
150
void draw_next_segment( bool reset )
148
151
{
149
152
// keep track of segment
150
static unsigned int segment = 0;
151
if( reset ) segment = 0;
152
segment++;
153
154
// turn on inside and outside LEDs
155
digitalWrite( 4, HIGH );
156
digitalWrite( 13, HIGH );
157
158
// display segment number in binary across in the inside LEDs,
159
// with the LED on pin 12 showing the least-significant bit
160
for( int a = 0; a < 8; a++ )
161
digitalWrite( 12 - a, ( ( segment >> a ) & 1 )? HIGH : LOW );
162
}
163
164
165
// draw a segment for the time display
166
void drawNextSegment_time( bool reset )
167
{
168
static unsigned int second = 0;
169
static unsigned int segment = 0;
170
171
// handle display reset
172
if( reset ) {
173
second = 0;
174
segment = 0;
175
}
176
177
// what needs to be drawn?
178
bool draw_tick = second % 5 == 0;
179
bool draw_second = second == time_seconds;
180
bool draw_minute = second == time_minute;
181
bool draw_hour = second == time_hour;
182
183
// set the LEDs
184
digitalWrite( 13, HIGH );
185
digitalWrite( 12, draw_tick || draw_minute );
186
for( int a = 10; a <= 11; a++ )
187
digitalWrite( a, draw_minute || draw_second );
188
for( int a = 4; a <= 9; a++ )
189
digitalWrite( 10, draw_minute | draw_second || draw_hour );
190
191
// inc position
192
if( ++segment >= NUM_SECOND_SEGMENTS ) {
193
segment = 0;
194
second++;
195
}
196
}
197
198
199
// draw a display segment
200
void drawNextSegment( bool reset )
201
{
202
static int draw_mode = 0;
203
204
// handle mode switch requests
205
if( reset && inc_draw_mode ) {
206
inc_draw_mode = false;
207
draw_mode++;
208
if( draw_mode >= 2 )
209
draw_mode = 0;
210
}
211
212
// draw the segment
213
switch( draw_mode ) {
214
case 0: drawNextSegment_test( reset ); break;
215
case 1: drawNextSegment_time( reset ); break;
216
}
153
#if CLOCK_FORWARD
154
static int segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
155
if( reset ) segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
156
#else
157
static int segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
158
if( reset ) segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
159
#endif
160
161
// reset the text renderer's buffer
162
TextRenderer::reset_buffer();
163
164
if( reset )
165
{
166
_modes[ _mode ]->draw_reset();
167
168
// tell the text services we're starting a new frame
169
Text::draw_reset();
170
}
171
172
// draw
173
_modes[ _mode ]->draw( segment );
174
175
// TODO: remove this hack
176
Text::post_draw();
177
178
// draw text rednerer's buffer
179
TextRenderer::output_buffer();
180
181
#if CLOCK_FORWARD
182
if( ++segment >= NUM_SEGMENTS ) segment = 0;
183
#else
184
if( --segment < 0 ) segment = NUM_SEGMENTS - 1;
185
#endif
217
186
}
218
187
219
188
220
189
// calculate time constants when a new pulse has occurred
221
void calculateSegmentTimes()
190
void calculate_segment_times()
222
191
{
223
192
// check for overflows, and only recalculate times if there isn't
224
193
// one (if there is, we'll just go with the last pulse's times)
225
if( new_pulse_at > last_pulse_at )
194
if( _new_pulse_at > _last_pulse_at )
226
195
{
227
196
// new segment stepping times
228
unsigned long delta = new_pulse_at - last_pulse_at;
229
segment_step = delta / NUM_SEGMENTS;
230
segment_step_sub = 0;
231
segment_step_sub_step = delta % NUM_SEGMENTS;
197
unsigned long delta = _new_pulse_at - _last_pulse_at;
198
_segment_step = delta / NUM_SEGMENTS;
199
_segment_step_sub = 0;
200
_segment_step_sub_step = delta % NUM_SEGMENTS;
232
201
}
233
202
234
203
// now we have dealt with this pulse, save the pulse time and
235
204
// clear new_pulse_at, ready for the next pulse
236
last_pulse_at = new_pulse_at;
237
new_pulse_at = 0;
205
_last_pulse_at = _new_pulse_at;
206
_new_pulse_at = 0;
238
207
}
239
208
240
209
241
210
// wait until it is time to draw the next segment or a new pulse has
242
211
// occurred
243
void waitTillNextSegment( bool reset )
212
void wait_till_end_of_segment( bool reset )
244
213
{
245
214
static unsigned long end_time = 0;
246
215
247
216
// handle reset
248
217
if( reset )
249
end_time = last_pulse_at;
218
end_time = _last_pulse_at;
250
219
251
220
// work out the time that this segment should be displayed until
252
end_time += segment_step;
253
segment_step_sub += segment_step_sub_step;
254
if( segment_step_sub >= NUM_SEGMENTS ) {
255
segment_step_sub -= NUM_SEGMENTS;
221
end_time += _segment_step;
222
_segment_step_sub += _segment_step_sub_step;
223
if( _segment_step_sub >= NUM_SEGMENTS ) {
224
_segment_step_sub -= NUM_SEGMENTS;
256
225
end_time++;
257
226
}
258
227
259
228
// wait
260
while( micros() < end_time && !new_pulse_at );
229
while( micros() < end_time && !_new_pulse_at );
261
230
}
262
231
263
232
264
// ISR to handle the pulses from the fan's tachiometer
265
void fanPulseHandler()
233
// ISR to handle the pulses from the fan's tachometer
234
void fan_pulse_handler()
266
235
{
267
236
// the fan actually sends two pulses per revolution. These pulses
268
237
// may not be exactly evenly distributed around the rotation, so
273
242
if( !ignore )
274
243
{
275
244
// set a new pulse time
276
new_pulse_at = micros();
245
_new_pulse_at = micros();
277
246
}
278
247
}
279
248
281
250
// main setup
282
251
void setup()
283
252
{
284
// set up an interrupt handler on pin 2 to nitice fan pulses
285
attachInterrupt( 0, fanPulseHandler, RISING );
253
// set up an interrupt handler on pin 2 to notice fan pulses
254
attachInterrupt( 0, fan_pulse_handler, RISING );
286
255
digitalWrite( 2, HIGH );
287
256
288
257
// set up output pins (4 to 13) for the led array
291
260
292
261
// set up mode-switch button on pin 3
293
262
pinMode( 3, INPUT );
294
295
// serial comms
296
Serial.begin( 9600 );
263
digitalWrite( 3, HIGH );
264
static int event_times[] = { 5, 500, 4000, 0 };
265
_button.set_event_times( event_times );
266
267
// initialise RTC
268
// Time::load_time();
269
270
// init text renderer
271
TextRenderer::init();
272
273
// reset text
274
Text::reset();
275
leds_off();
276
277
static SwitcherMajorMode switcher;
278
static SettingsMajorMode settings( _button );
279
280
// add major modes
281
int mode = 0;
282
_modes[ mode++ ] = &switcher;
283
_modes[ mode++ ] = &settings;
284
_modes[ mode ] = 0;
285
286
// activate the current major mode
287
_modes[ _mode ]->activate();
297
288
}
298
289
299
290
301
292
void loop()
302
293
{
303
294
// if there has been a new pulse, we'll be resetting the display
304
bool reset = new_pulse_at? true : false;
295
bool reset = _new_pulse_at? true : false;
296
297
// update button
298
_button.update();
305
299
306
300
// only do this stuff at the start of a display cycle, to ensure
307
301
// that no state changes mid-display
308
302
if( reset )
309
303
{
310
// check buttons
311
checkButtons();
304
// calculate segment times
305
calculate_segment_times();
312
306
313
307
// keep track of time
314
trackTime();
308
Time::update();
309
310
// perform button events
311
do_button_events();
315
312
}
316
313
317
314
// draw this segment
318
drawNextSegment( reset );
319
320
// do we need to recalculate segment times?
321
if( reset )
322
calculateSegmentTimes();
315
draw_next_segment( reset );
323
316
324
317
// wait till it's time to draw the next segment
325
waitTillNextSegment( reset );
318
wait_till_end_of_segment( reset );
326
319
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0