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 43
- compare with another revision
- download diff
- download tarball
- view history from revision 43
- Committer: edam
- Date: 2012-02-08 23:32:34 UTC
- Revision ID: edam@waxworlds.org-20120208233234-4h5pzeetrz0vp91f
added phantom button press test and temporarily disabled pin 4 (that drives the PNP transistor)
- files added:
- src/util/Bounce.cpp
- files removed:
- arduino.mk
- test/fan-test/Makefile
- test/rtc-test
- test/rtc-test/util
- files renamed:
- src/propeller-clock.cc => src/propeller-clock.ino
- files modified:
- .bzrignore
- test/led-test/Makefile
- test/phantom-button-presses/Makefile
added
removed
src/propeller-clock.ino
28
28
29
29
* a PC fan is wired up to a 12V power supply
30
30
31
* the fan's SENSE (tachometer) pin connected to pin 2 on the
32
Arduino.
31
* the fan's SENSE (tachiometer) pin connected to pin 2 on the
32
arduino.
33
33
34
* the pins 4 to 13 on the Arduino should directly drive an LED (the
34
* the pins 4 to 13 on the arduino should directly drive an LED (the
35
35
LED on pin 4 is in the centre of the clock face and the LED on pin
36
36
13 is at the outside.
37
37
38
38
* if a longer hand (and a larger clock face) is desired, pin 4 can be
39
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.
40
LEDs that turn on anf off in unison in the centre of the clock.
41
41
42
42
* a button should be attached to pin 3 that grounds it when pressed.
43
43
44
* A DS1307 remote clock is connected via I2C on analogue pins 4 and 5.
44
* A DS1307 remote clock is connected via I2C on analog pins 4 and 5.
45
45
46
46
Implementation details:
47
47
50
50
* the timing of the drawing of the clock face is recalculated with
51
51
every rotation of the propeller.
52
52
53
* a PC fan actually sends 2 tachometer pulses per revolution, so the
53
* a PC fan actually sends 2 tachiometer pulses per revolution, so the
54
54
software skips every other one. This means that the clock may
55
55
appear upside-down if started with the propeller in the wrong
56
position. You will need to experiment to discover the position that
56
position. You will need to experiment to dicsover the position that
57
57
the propeller must be in when starting the clock.
58
58
59
59
Usage instructions:
75
75
76
76
******************************************************************************/
77
77
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"
78
79
#include <Bounce.h>
80
#include <DS1307.h>
81
#include <Wire.h>
89
82
90
83
//_____________________________________________________________________________
91
84
// data
92
85
86
93
87
// when non-zero, the time (in microseconds) of a new fan pulse that
94
88
// has just occurred, which means that segment drawing needs to be
95
89
// restarted
96
static unsigned long _new_pulse_at = 0;
90
static unsigned long new_pulse_at = 0;
97
91
98
92
// the time (in microseconds) when the last fan pulse occurred
99
static unsigned long _last_pulse_at = 0;
93
static unsigned long last_pulse_at = 0;
100
94
101
95
// duration (in microseconds) that a segment should be displayed
102
static unsigned long _segment_step = 0;
96
static unsigned long segment_step = 0;
103
97
104
98
// 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
99
static unsigned long segment_step_sub_step = 0;
100
static unsigned long segment_step_sub = 0;
101
102
// flag to indicate that the drawing mode should be cycled to the next one
103
static bool inc_draw_mode = false;
104
105
// a bounce-managed button
106
static Bounce button( 3, 50 );
107
108
// the time
109
static int time_hours = 0;
110
static int time_minutes = 0;
111
static int time_seconds = 0;
112
113
// number of segments in a full display (rotation) is 60 (one per
114
// second) times the desired number of sub-divisions of a second
115
#define NUM_SECOND_SEGMENTS 5
116
#define NUM_SEGMENTS ( 60 * NUM_SECOND_SEGMENTS )
121
117
122
118
//_____________________________________________________________________________
123
119
// code
124
120
125
121
126
// activate the current minor mode
127
void activate_minor_mode()
128
{
129
// reset text
130
Text::reset();
131
leds_off();
132
133
// give the mode a chance to init
134
switch( _minor_mode ) {
135
case ANALOGUE_CLOCK_IDX: analogue_clock_activate(); break;
136
case DIGITAL_CLOCK_IDX: digital_clock_activate(); break;
137
}
138
}
139
140
141
// activate major mode
142
void activate_major_mode()
143
{
144
// reset text
145
Text::reset();
146
leds_off();
147
148
// give the mode a chance to init
149
switch( _major_mode ) {
150
case MAIN_MODE_IDX: activate_minor_mode(); break;
151
case SETTINGS_MODE_IDX: settings_mode_activate(); break;
152
}
153
}
154
155
156
// perform button events
157
void do_button_events()
158
{
159
// loop through pending events
160
while( int event = _button.get_event() )
161
{
162
switch( event )
163
{
164
case 1:
165
// short press
166
switch( _major_mode ) {
167
case MAIN_MODE_IDX:
168
switch( _minor_mode ) {
169
case ANALOGUE_CLOCK_IDX: analogue_clock_press(); break;
170
case DIGITAL_CLOCK_IDX: digital_clock_press(); break;
171
}
172
break;
173
case SETTINGS_MODE_IDX: settings_mode_press(); break;
174
}
175
break;
176
177
case 2:
178
// long press
179
switch( _major_mode ) {
180
case MAIN_MODE_IDX:
181
if( ++_minor_mode >= 3 )
182
_minor_mode = 0;
183
activate_minor_mode();
184
break;
185
case SETTINGS_MODE_IDX: settings_mode_long_press(); break;
186
}
187
break;
188
189
case 3:
190
// looooong press (change major mode)
191
if( ++_major_mode > 1 )
192
_major_mode = 0;
193
activate_major_mode();
194
break;
122
// check for button presses
123
void checkButtons()
124
{
125
// update buttons
126
button.update();
127
128
// notice button presses
129
if( button.risingEdge() )
130
inc_draw_mode = true;
131
}
132
133
134
// keep track of time
135
void trackTime()
136
{
137
// previous time and any carried-over milliseconds
138
static unsigned long last_time = millis();
139
static unsigned long carry = 0;
140
141
// how many milliseonds have elapsed since we last checked?
142
unsigned long next_time = millis();
143
unsigned long delta = next_time - last_time + carry;
144
145
// update the previous time and carried-over milliseconds
146
last_time = next_time;
147
carry = delta % 1000;
148
149
// add the seconds that have passed to the time
150
time_seconds += delta / 1000;
151
while( time_seconds >= 60 ) {
152
time_seconds -= 60;
153
time_minutes++;
154
if( time_minutes >= 60 ) {
155
time_minutes -= 60;
156
time_hours++;
157
if( time_hours >= 24 )
158
time_hours -= 24;
195
159
}
196
160
}
197
161
}
198
162
199
163
200
// draw a display segment
201
void draw_next_segment( bool reset )
164
// turn an led on/off
165
void ledOn( int num, bool on )
166
{
167
if( num < 0 || num > 9 ) return;
168
169
// convert to pin no.
170
num += 4;
171
172
// pin 4 needs to be inverted (it's driving a PNP)
173
// NOTE: PIN 4 TEMPORARILY DISABLED
174
if( num == 4 ) on = true; //!on
175
176
digitalWrite( num, on? HIGH : LOW );
177
}
178
179
180
// draw a segment for the test display
181
void drawNextSegment_test( bool reset )
202
182
{
203
183
// keep track of segment
204
#if CLOCK_FORWARD
205
static int segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
206
if( reset ) segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
207
#else
208
static int segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
209
if( reset ) segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
210
#endif
211
212
// reset the text renderer
213
TextRenderer::reset_buffer();
214
215
// frame reset
184
static unsigned int segment = 0;
185
if( reset ) segment = 0;
186
segment++;
187
188
// turn on inside and outside LEDs
189
ledOn( 0, true );
190
ledOn( 9, true );
191
192
// display segment number in binary across in the inside LEDs,
193
// with the LED on pin 12 showing the least-significant bit
194
for( int a = 0; a < 8; a++ )
195
ledOn( 8 - a, ( segment >> a ) & 1 );
196
}
197
198
199
// draw a segment for the time display
200
void drawNextSegment_time( bool reset )
201
{
202
static int second = 0;
203
static int segment = 0;
204
205
// handle display reset
216
206
if( reset ) {
217
switch( _major_mode ) {
218
case MAIN_MODE_IDX:
219
switch( _minor_mode ) {
220
case ANALOGUE_CLOCK_IDX: analogue_clock_draw_reset(); break;
221
case DIGITAL_CLOCK_IDX: digital_clock_draw_reset(); break;
222
}
223
break;
224
case SETTINGS_MODE_IDX: settings_mode_draw_reset(); break;
225
}
226
227
// tell the text services we're starting a new frame
228
Text::draw_reset();
229
}
230
231
// draw
232
switch( _major_mode ) {
233
case MAIN_MODE_IDX:
234
switch( _minor_mode ) {
235
case ANALOGUE_CLOCK_IDX: analogue_clock_draw( segment ); break;
236
case DIGITAL_CLOCK_IDX: digital_clock_draw( segment ); break;
237
case TEST_PATTERN_IDX: test_pattern_draw( segment ); break;
238
}
239
break;
240
case SETTINGS_MODE_IDX: settings_mode_draw( segment ); break;
241
}
242
243
// draw any text that was rendered
244
TextRenderer::output_buffer();
245
246
#if CLOCK_FORWARD
247
if( ++segment >= NUM_SEGMENTS ) segment = 0;
248
#else
249
if( --segment < 0 ) segment = NUM_SEGMENTS - 1;
250
#endif
207
second = 0;
208
segment = 0;
209
}
210
211
// what needs to be drawn?
212
bool draw_tick = !segment && second % 5 == 0;
213
bool draw_second = !segment && second == time_seconds;
214
bool draw_minute = !segment && second == time_minutes;
215
bool draw_hour = !segment && second == time_hours;
216
217
// set the LEDs
218
ledOn( 9, true );
219
ledOn( 8, draw_tick || draw_minute );
220
for( int a = 6; a <= 7; a++ )
221
ledOn( a, draw_minute || draw_second );
222
for( int a = 0; a <= 5; a++ )
223
ledOn( a, draw_minute || draw_second || draw_hour );
224
225
// inc position
226
if( ++segment >= NUM_SECOND_SEGMENTS ) {
227
segment = 0;
228
second++;
229
}
230
}
231
232
233
// draw a display segment
234
void drawNextSegment( bool reset )
235
{
236
static int draw_mode = 0;
237
238
// handle mode switch requests
239
if( reset && inc_draw_mode ) {
240
inc_draw_mode = false;
241
draw_mode++;
242
if( draw_mode >= 2 )
243
draw_mode = 0;
244
}
245
246
// draw the segment
247
switch( draw_mode ) {
248
case 0: drawNextSegment_test( reset ); break;
249
case 1: drawNextSegment_time( reset ); break;
250
}
251
251
}
252
252
253
253
254
254
// calculate time constants when a new pulse has occurred
255
void calculate_segment_times()
255
void calculateSegmentTimes()
256
256
{
257
257
// check for overflows, and only recalculate times if there isn't
258
258
// one (if there is, we'll just go with the last pulse's times)
259
if( _new_pulse_at > _last_pulse_at )
259
if( new_pulse_at > last_pulse_at )
260
260
{
261
261
// new segment stepping times
262
unsigned long delta = _new_pulse_at - _last_pulse_at;
263
_segment_step = delta / NUM_SEGMENTS;
264
_segment_step_sub = 0;
265
_segment_step_sub_step = delta % NUM_SEGMENTS;
262
unsigned long delta = new_pulse_at - last_pulse_at;
263
segment_step = delta / NUM_SEGMENTS;
264
segment_step_sub = 0;
265
segment_step_sub_step = delta % NUM_SEGMENTS;
266
266
}
267
267
268
268
// now we have dealt with this pulse, save the pulse time and
269
269
// clear new_pulse_at, ready for the next pulse
270
_last_pulse_at = _new_pulse_at;
271
_new_pulse_at = 0;
270
last_pulse_at = new_pulse_at;
271
new_pulse_at = 0;
272
272
}
273
273
274
274
275
275
// wait until it is time to draw the next segment or a new pulse has
276
276
// occurred
277
void wait_till_end_of_segment( bool reset )
277
void waitTillNextSegment( bool reset )
278
278
{
279
279
static unsigned long end_time = 0;
280
280
281
281
// handle reset
282
282
if( reset )
283
end_time = _last_pulse_at;
283
end_time = last_pulse_at;
284
284
285
285
// work out the time that this segment should be displayed until
286
end_time += _segment_step;
287
_segment_step_sub += _segment_step_sub_step;
288
if( _segment_step_sub >= NUM_SEGMENTS ) {
289
_segment_step_sub -= NUM_SEGMENTS;
286
end_time += segment_step;
287
segment_step_sub += segment_step_sub_step;
288
if( segment_step_sub >= NUM_SEGMENTS ) {
289
segment_step_sub -= NUM_SEGMENTS;
290
290
end_time++;
291
291
}
292
292
293
293
// wait
294
while( micros() < end_time && !_new_pulse_at );
294
while( micros() < end_time && !new_pulse_at );
295
295
}
296
296
297
297
298
298
// ISR to handle the pulses from the fan's tachiometer
299
void fan_pulse_handler()
299
void fanPulseHandler()
300
300
{
301
301
// the fan actually sends two pulses per revolution. These pulses
302
302
// may not be exactly evenly distributed around the rotation, so
307
307
if( !ignore )
308
308
{
309
309
// set a new pulse time
310
_new_pulse_at = micros();
310
new_pulse_at = micros();
311
311
}
312
312
}
313
313
316
316
void setup()
317
317
{
318
318
// set up an interrupt handler on pin 2 to nitice fan pulses
319
attachInterrupt( 0, fan_pulse_handler, RISING );
319
attachInterrupt( 0, fanPulseHandler, RISING );
320
320
digitalWrite( 2, HIGH );
321
321
322
322
// set up output pins (4 to 13) for the led array
326
326
// set up mode-switch button on pin 3
327
327
pinMode( 3, INPUT );
328
328
digitalWrite( 3, HIGH );
329
static int event_times[] = { 5, 500, 4000, 0 };
330
_button.set_event_times( event_times );
331
332
// initialise RTC
333
Time::init();
334
335
// activate the minor mode
336
activate_major_mode();
329
330
// get the time from the real-time clock
331
int rtc_data[ 7 ];
332
RTC.get( rtc_data, true );
333
time_hours = rtc_data[ DS1307_HR ];
334
time_minutes = rtc_data[ DS1307_MIN ];
335
time_seconds = rtc_data[ DS1307_SEC ];
336
337
// serial comms
338
Serial.begin( 9600 );
337
339
}
338
340
339
341
341
343
void loop()
342
344
{
343
345
// if there has been a new pulse, we'll be resetting the display
344
bool reset = _new_pulse_at? true : false;
345
346
// update button
347
_button.update();
346
bool reset = new_pulse_at? true : false;
348
347
349
348
// only do this stuff at the start of a display cycle, to ensure
350
349
// that no state changes mid-display
351
350
if( reset )
352
351
{
353
// calculate segment times
354
calculate_segment_times();
352
// check buttons
353
checkButtons();
355
354
356
355
// keep track of time
357
Time::update();
358
359
// perform button events
360
do_button_events();
356
trackTime();
361
357
}
362
358
363
359
// draw this segment
364
draw_next_segment( reset );
360
drawNextSegment( reset );
361
362
// do we need to recalculate segment times?
363
if( reset )
364
calculateSegmentTimes();
365
365
366
366
// wait till it's time to draw the next segment
367
wait_till_end_of_segment( reset );
367
waitTillNextSegment( reset );
368
368
}
Loggerhead is a web-based interface for Bazaar branches
Version: 1.18.2, Revision: 480