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.ino
- browse files at revision 32
- compare with another revision
- download diff
- download tarball
- view history from revision 32
- Committer: edam
- Date: 2012-01-04 19:16:50 UTC
- Revision ID: edam@waxworlds.org-20120104191650-eij5qp0hapachu2g
updated arduino makefile
- files added:
- src/util/Bounce.cpp
- files removed:
- arduino.mk
- 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/util
- files renamed:
- src/propeller-clock.cc => src/propeller-clock.ino
- test/fan-test/fan-test.ino => test/fan-test.pde
- files modified:
- .bzrignore
added
removed
src/propeller-clock.ino
1
/* -*- mode: c++; compile-command: "BOARD=pro5v make"; -*- */
2
1
/*
3
2
* propeller-clock.ino
4
3
*
28
27
29
28
* a PC fan is wired up to a 12V power supply
30
29
31
* the fan's SENSE (tachometer) pin connected to pin 2 on the
32
Arduino.
30
* the fan's SENSE (tachiometer) pin connected to pin 2 on the
31
arduino.
33
32
34
* the pins 4 to 13 on the Arduino should directly drive an LED (the
33
* the pins 4 to 13 on the arduino should directly drive an LED (the
35
34
LED on pin 4 is in the centre of the clock face and the LED on pin
36
35
13 is at the outside.
37
36
38
37
* 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.
38
used to indirectly drive (via a MOSFET) multiple LEDs which turn on
39
and off in unison in the centre of the clock.
41
40
42
41
* a button should be attached to pin 3 that grounds it when pressed.
43
42
44
* A DS1307 remote clock is connected via I2C on analogue pins 4 and 5.
45
46
43
Implementation details:
47
44
48
* for a schematic, see ../project/propeller-clock.sch.
45
* for a schematic, see project/propeller-clock.sch.
49
46
50
47
* the timing of the drawing of the clock face is recalculated with
51
48
every rotation of the propeller.
52
49
53
* a PC fan actually sends 2 tachometer pulses per revolution, so the
50
* a PC fan actually sends 2 tachiometer pulses per revolution, so the
54
51
software skips every other one. This means that the clock may
55
52
appear upside-down if started with the propeller in the wrong
56
position. You will need to experiment to discover the position that
53
position. You will need to experiment to dicsover the position that
57
54
the propeller must be in when starting the clock.
58
55
59
56
Usage instructions:
70
67
- pressing the button increments the field currently being set
71
68
- pressing and holding the button for a second cycles through the
72
69
fields that can be set
73
- pressing and holding the button for 5 seconds sets the time and
74
exits "time set" mode
70
- press and holding the button for 5 seconds to finish
75
71
76
72
******************************************************************************/
77
73
78
#include "config.h"
79
#include "button.h"
80
#include "time.h"
81
#include "Arduino.h"
82
#include "analogue_clock.h"
83
#include "digital_clock.h"
84
#include "test_pattern.h"
85
#include "settings_mode.h"
86
#include "text.h"
87
#include "text_renderer.h"
88
#include "common.h"
74
75
#include <Bounce.h>
89
76
90
77
//_____________________________________________________________________________
91
78
// data
92
79
80
93
81
// when non-zero, the time (in microseconds) of a new fan pulse that
94
82
// has just occurred, which means that segment drawing needs to be
95
83
// restarted
96
static unsigned long _new_pulse_at = 0;
84
static unsigned long new_pulse_at = 0;
97
85
98
86
// the time (in microseconds) when the last fan pulse occurred
99
static unsigned long _last_pulse_at = 0;
87
static unsigned long last_pulse_at = 0;
100
88
101
89
// duration (in microseconds) that a segment should be displayed
102
static unsigned long _segment_step = 0;
90
static unsigned long segment_step = 0;
103
91
104
92
// remainder after divisor and a tally of the remainders for each segment
105
static unsigned long _segment_step_sub_step = 0;
106
static unsigned long _segment_step_sub = 0;
107
108
// the button
109
static Button _button( 3 );
110
111
// modes
112
static int _major_mode = 0;
113
static int _minor_mode = 0;
114
115
#define MAIN_MODE_IDX 1
116
#define SETTINGS_MODE_IDX 0
117
118
#define ANALOGUE_CLOCK_IDX 0
119
#define DIGITAL_CLOCK_IDX 1
120
#define TEST_PATTERN_IDX 2
93
static unsigned long segment_step_sub_step = 0;
94
static unsigned long segment_step_sub = 0;
95
96
// flag to indicate that the drawing mode should be cycled to the next one
97
static bool inc_draw_mode = false;
98
99
// a bounce-managed button
100
static Bounce button( 3, 5 );
101
102
// the time
103
static int time_hours = 0;
104
static int time_minutes = 0;
105
static int time_seconds = 0;
106
107
// number of segments in a full display (rotation) is 60 (one per
108
// second) times the desired number of sub-divisions of a second
109
#define NUM_SECOND_SEGMENTS 5
110
#define NUM_SEGMENTS ( 60 * NUM_SECOND_SEGMENTS )
121
111
122
112
//_____________________________________________________________________________
123
113
// code
124
114
125
115
126
// activate the current minor mode
127
void activate_minor_mode()
128
{
129
switch( _minor_mode ) {
130
case ANALOGUE_CLOCK_IDX: analogue_clock_activate(); break;
131
case DIGITAL_CLOCK_IDX: digital_clock_activate(); break;
132
}
133
134
// reset text
135
Text::reset();
136
leds_off();
137
}
138
139
140
// activate major mode
141
void activate_major_mode()
142
{
143
switch( _major_mode ) {
144
case MAIN_MODE_IDX: activate_minor_mode(); break;
145
case SETTINGS_MODE_IDX: settings_mode_activate(); break;
146
}
147
148
// reset text
149
Text::reset();
150
leds_off();
151
}
152
153
154
// perform button events
155
void do_button_events()
156
{
157
// loop through pending events
158
while( int event = _button.get_event() )
159
{
160
switch( event )
161
{
162
case 1:
163
// short press
164
switch( _major_mode ) {
165
case MAIN_MODE_IDX:
166
switch( _minor_mode ) {
167
case ANALOGUE_CLOCK_IDX: analogue_clock_press(); break;
168
case DIGITAL_CLOCK_IDX: digital_clock_press(); break;
169
}
170
break;
171
case SETTINGS_MODE_IDX: settings_mode_press(); break;
172
}
173
break;
174
175
case 2:
176
// long press
177
switch( _major_mode ) {
178
case MAIN_MODE_IDX:
179
if( ++_minor_mode >= 3 )
180
_minor_mode = 0;
181
activate_minor_mode();
182
break;
183
case SETTINGS_MODE_IDX: settings_mode_long_press(); break;
184
}
185
break;
186
187
case 3:
188
// looooong press (change major mode)
189
if( ++_major_mode > 1 )
190
_major_mode = 0;
191
activate_major_mode();
192
break;
116
// check for button presses
117
void checkButtons()
118
{
119
// update buttons
120
button.update();
121
122
// notice button presses
123
if( button.risingEdge() )
124
inc_draw_mode = true;
125
}
126
127
128
// keep track of time
129
void trackTime()
130
{
131
// previous time and any carried-over milliseconds
132
static unsigned long last_time = millis();
133
static unsigned long carry = 0;
134
135
// how many milliseonds have elapsed since we last checked?
136
unsigned long next_time = millis();
137
unsigned long delta = next_time - last_time + carry;
138
139
// update the previous time and carried-over milliseconds
140
last_time = next_time;
141
carry = delta % 1000;
142
143
// add the seconds that have passed to the time
144
time_seconds += delta / 1000;
145
while( time_seconds >= 60 ) {
146
time_seconds -= 60;
147
time_minutes++;
148
if( time_minutes >= 60 ) {
149
time_minutes -= 60;
150
time_hours++;
151
if( time_hours >= 24 )
152
time_hours -= 24;
193
153
}
194
154
}
195
155
}
196
156
197
157
198
// draw a display segment
199
void draw_next_segment( bool reset )
158
// draw a segment for the test display
159
void drawNextSegment_test( bool reset )
200
160
{
201
161
// keep track of segment
202
#if CLOCK_FORWARD
203
static int segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
204
if( reset ) segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
205
#else
206
static int segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
207
if( reset ) segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
208
#endif
209
210
// reset the text renderer
211
TextRenderer::reset_buffer();
212
213
// frame reset
162
static unsigned int segment = 0;
163
if( reset ) segment = 0;
164
segment++;
165
166
// turn on inside and outside LEDs
167
digitalWrite( 4, HIGH );
168
digitalWrite( 13, HIGH );
169
170
// display segment number in binary across in the inside LEDs,
171
// with the LED on pin 12 showing the least-significant bit
172
for( int a = 0; a < 8; a++ )
173
digitalWrite( 12 - a, ( ( segment >> a ) & 1 )? HIGH : LOW );
174
}
175
176
177
// draw a segment for the time display
178
void drawNextSegment_time( bool reset )
179
{
180
static unsigned int second = 0;
181
static unsigned int segment = 0;
182
183
// handle display reset
214
184
if( reset ) {
215
switch( _major_mode ) {
216
case MAIN_MODE_IDX:
217
switch( _minor_mode ) {
218
case ANALOGUE_CLOCK_IDX: analogue_clock_draw_reset(); break;
219
case DIGITAL_CLOCK_IDX: digital_clock_draw_reset(); break;
220
}
221
break;
222
case SETTINGS_MODE_IDX: settings_mode_draw_reset(); break;
223
}
224
225
// tell the text services we're starting a new frame
226
Text::draw_reset();
227
}
228
229
// draw
230
switch( _major_mode ) {
231
case MAIN_MODE_IDX:
232
switch( _minor_mode ) {
233
case ANALOGUE_CLOCK_IDX: analogue_clock_draw( segment ); break;
234
case DIGITAL_CLOCK_IDX: digital_clock_draw( segment ); break;
235
case TEST_PATTERN_IDX: test_pattern_draw( segment ); break;
236
}
237
break;
238
case SETTINGS_MODE_IDX: settings_mode_draw( segment ); break;
239
}
240
241
// draw any text that was rendered
242
TextRenderer::output_buffer();
243
244
#if CLOCK_FORWARD
245
if( ++segment >= NUM_SEGMENTS ) segment = 0;
246
#else
247
if( --segment < 0 ) segment = NUM_SEGMENTS - 1;
248
#endif
185
second = 0;
186
segment = 0;
187
}
188
189
// what needs to be drawn?
190
bool draw_tick = !segment && second % 5 == 0;
191
bool draw_second = !segment && second == time_seconds;
192
bool draw_minute = !segment && second == time_minutes;
193
bool draw_hour = !segment && second == time_hours;
194
195
// set the LEDs
196
digitalWrite( 13, HIGH );
197
digitalWrite( 12, draw_tick || draw_minute );
198
for( int a = 10; a <= 11; a++ )
199
digitalWrite( a, draw_minute || draw_second );
200
for( int a = 4; a <= 9; a++ )
201
digitalWrite( 10, draw_minute | draw_second || draw_hour );
202
203
// inc position
204
if( ++segment >= NUM_SECOND_SEGMENTS ) {
205
segment = 0;
206
second++;
207
}
208
}
209
210
211
// draw a display segment
212
void drawNextSegment( bool reset )
213
{
214
static int draw_mode = 0;
215
216
// handle mode switch requests
217
if( reset && inc_draw_mode ) {
218
inc_draw_mode = false;
219
draw_mode++;
220
if( draw_mode >= 2 )
221
draw_mode = 0;
222
}
223
224
// draw the segment
225
switch( draw_mode ) {
226
case 0: drawNextSegment_test( reset ); break;
227
case 1: drawNextSegment_time( reset ); break;
228
}
249
229
}
250
230
251
231
252
232
// calculate time constants when a new pulse has occurred
253
void calculate_segment_times()
233
void calculateSegmentTimes()
254
234
{
255
235
// check for overflows, and only recalculate times if there isn't
256
236
// one (if there is, we'll just go with the last pulse's times)
257
if( _new_pulse_at > _last_pulse_at )
237
if( new_pulse_at > last_pulse_at )
258
238
{
259
239
// new segment stepping times
260
unsigned long delta = _new_pulse_at - _last_pulse_at;
261
_segment_step = delta / NUM_SEGMENTS;
262
_segment_step_sub = 0;
263
_segment_step_sub_step = delta % NUM_SEGMENTS;
240
unsigned long delta = new_pulse_at - last_pulse_at;
241
segment_step = delta / NUM_SEGMENTS;
242
segment_step_sub = 0;
243
segment_step_sub_step = delta % NUM_SEGMENTS;
264
244
}
265
245
266
246
// now we have dealt with this pulse, save the pulse time and
267
247
// clear new_pulse_at, ready for the next pulse
268
_last_pulse_at = _new_pulse_at;
269
_new_pulse_at = 0;
248
last_pulse_at = new_pulse_at;
249
new_pulse_at = 0;
270
250
}
271
251
272
252
273
253
// wait until it is time to draw the next segment or a new pulse has
274
254
// occurred
275
void wait_till_end_of_segment( bool reset )
255
void waitTillNextSegment( bool reset )
276
256
{
277
257
static unsigned long end_time = 0;
278
258
279
259
// handle reset
280
260
if( reset )
281
end_time = _last_pulse_at;
261
end_time = last_pulse_at;
282
262
283
263
// work out the time that this segment should be displayed until
284
end_time += _segment_step;
285
_segment_step_sub += _segment_step_sub_step;
286
if( _segment_step_sub >= NUM_SEGMENTS ) {
287
_segment_step_sub -= NUM_SEGMENTS;
264
end_time += segment_step;
265
segment_step_sub += segment_step_sub_step;
266
if( segment_step_sub >= NUM_SEGMENTS ) {
267
segment_step_sub -= NUM_SEGMENTS;
288
268
end_time++;
289
269
}
290
270
291
271
// wait
292
while( micros() < end_time && !_new_pulse_at );
272
while( micros() < end_time && !new_pulse_at );
293
273
}
294
274
295
275
296
276
// ISR to handle the pulses from the fan's tachiometer
297
void fan_pulse_handler()
277
void fanPulseHandler()
298
278
{
299
279
// the fan actually sends two pulses per revolution. These pulses
300
280
// may not be exactly evenly distributed around the rotation, so
305
285
if( !ignore )
306
286
{
307
287
// set a new pulse time
308
_new_pulse_at = micros();
288
new_pulse_at = micros();
309
289
}
310
290
}
311
291
314
294
void setup()
315
295
{
316
296
// set up an interrupt handler on pin 2 to nitice fan pulses
317
attachInterrupt( 0, fan_pulse_handler, RISING );
297
attachInterrupt( 0, fanPulseHandler, RISING );
318
298
digitalWrite( 2, HIGH );
319
299
320
300
// set up output pins (4 to 13) for the led array
323
303
324
304
// set up mode-switch button on pin 3
325
305
pinMode( 3, INPUT );
326
digitalWrite( 3, HIGH );
327
static int event_times[] = { 5, 500, 4000, 0 };
328
_button.set_event_times( event_times );
329
330
// initialise RTC
331
Time::init();
332
333
// activate the minor mode
334
activate_major_mode();
306
307
// serial comms
308
Serial.begin( 9600 );
335
309
}
336
310
337
311
339
313
void loop()
340
314
{
341
315
// if there has been a new pulse, we'll be resetting the display
342
bool reset = _new_pulse_at? true : false;
343
344
// update button
345
_button.update();
316
bool reset = new_pulse_at? true : false;
346
317
347
318
// only do this stuff at the start of a display cycle, to ensure
348
319
// that no state changes mid-display
349
320
if( reset )
350
321
{
351
// calculate segment times
352
calculate_segment_times();
322
// check buttons
323
checkButtons();
353
324
354
325
// keep track of time
355
Time::update();
356
357
// perform button events
358
do_button_events();
326
trackTime();
359
327
}
360
328
361
329
// draw this segment
362
draw_next_segment( reset );
330
drawNextSegment( reset );
331
332
// do we need to recalculate segment times?
333
if( reset )
334
calculateSegmentTimes();
363
335
364
336
// wait till it's time to draw the next segment
365
wait_till_end_of_segment( reset );
337
waitTillNextSegment( reset );
366
338
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0