75
76
******************************************************************************/
82
#include "analogue_clock.h"
83
#include "digital_clock.h"
84
#include "test_pattern.h"
85
#include "settings_mode.h"
87
#include "text_renderer.h"
82
90
//_____________________________________________________________________________
86
93
// when non-zero, the time (in microseconds) of a new fan pulse that
87
94
// has just occurred, which means that segment drawing needs to be
89
static unsigned long new_pulse_at = 0;
96
static unsigned long _new_pulse_at = 0;
91
98
// the time (in microseconds) when the last fan pulse occurred
92
static unsigned long last_pulse_at = 0;
99
static unsigned long _last_pulse_at = 0;
94
101
// duration (in microseconds) that a segment should be displayed
95
static unsigned long segment_step = 0;
102
static unsigned long _segment_step = 0;
97
104
// remainder after divisor and a tally of the remainders for each segment
98
static unsigned long segment_step_sub_step = 0;
99
static unsigned long segment_step_sub = 0;
101
// flag to indicate that the drawing mode should be cycled to the next one
102
static bool inc_draw_mode = false;
104
// a bounce-managed button
105
static Bounce button( 3, 5 );
108
static int time_hours = 0;
109
static int time_minutes = 0;
110
static int time_seconds = 0;
112
// number of segments in a full display (rotation) is 60 (one per
113
// second) times the desired number of sub-divisions of a second
114
#define NUM_SECOND_SEGMENTS 5
115
#define NUM_SEGMENTS ( 60 * NUM_SECOND_SEGMENTS )
105
static unsigned long _segment_step_sub_step = 0;
106
static unsigned long _segment_step_sub = 0;
109
static Button _button( 3 );
112
static int _major_mode = 0;
113
static int _minor_mode = 0;
115
#define MAIN_MODE_IDX 1
116
#define SETTINGS_MODE_IDX 0
118
#define ANALOGUE_CLOCK_IDX 0
119
#define DIGITAL_CLOCK_IDX 1
120
#define TEST_PATTERN_IDX 2
117
122
//_____________________________________________________________________________
121
// check for button presses
127
// notice button presses
128
if( button.risingEdge() )
129
inc_draw_mode = true;
133
// keep track of time
136
// previous time and any carried-over milliseconds
137
static unsigned long last_time = millis();
138
static unsigned long carry = 0;
140
// how many milliseonds have elapsed since we last checked?
141
unsigned long next_time = millis();
142
unsigned long delta = next_time - last_time + carry;
144
// update the previous time and carried-over milliseconds
145
last_time = next_time;
146
carry = delta % 1000;
148
// add the seconds that have passed to the time
149
time_seconds += delta / 1000;
150
while( time_seconds >= 60 ) {
153
if( time_minutes >= 60 ) {
156
if( time_hours >= 24 )
126
// activate the current minor mode
127
void activate_minor_mode()
129
switch( _minor_mode ) {
130
case ANALOGUE_CLOCK_IDX: analogue_clock_activate(); break;
131
case DIGITAL_CLOCK_IDX: digital_clock_activate(); break;
140
// activate major mode
141
void activate_major_mode()
143
switch( _major_mode ) {
144
case MAIN_MODE_IDX: activate_minor_mode(); break;
145
case SETTINGS_MODE_IDX: settings_mode_activate(); break;
154
// perform button events
155
void do_button_events()
157
// loop through pending events
158
while( int event = _button.get_event() )
164
switch( _major_mode ) {
166
switch( _minor_mode ) {
167
case ANALOGUE_CLOCK_IDX: analogue_clock_press(); break;
168
case DIGITAL_CLOCK_IDX: digital_clock_press(); break;
171
case SETTINGS_MODE_IDX: settings_mode_press(); break;
177
switch( _major_mode ) {
179
if( ++_minor_mode >= 3 )
181
activate_minor_mode();
183
case SETTINGS_MODE_IDX: settings_mode_long_press(); break;
188
// looooong press (change major mode)
189
if( ++_major_mode > 1 )
191
activate_major_mode();
163
// turn an led on/off
164
void ledOn( int num, bool on )
166
if( num < 0 || num > 9 ) return;
168
// convert to pin no.
171
// pin 4 needs to be inverted (it's driving a PNP)
172
if( num == 4 ) on = !on;
174
digitalWrite( num, on? HIGH : LOW );
178
// draw a segment for the test display
179
void drawNextSegment_test( bool reset )
198
// draw a display segment
199
void draw_next_segment( bool reset )
181
201
// keep track of segment
182
static unsigned int segment = 0;
183
if( reset ) segment = 0;
186
// turn on inside and outside LEDs
190
// display segment number in binary across in the inside LEDs,
191
// with the LED on pin 12 showing the least-significant bit
192
for( int a = 0; a < 8; a++ )
193
ledOn( 8 - a, ( segment >> a ) & 1 );
197
// draw a segment for the time display
198
void drawNextSegment_time( bool reset )
200
static int second = 0;
201
static int segment = 0;
203
// handle display reset
203
static int segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
204
if( reset ) segment = ( NUM_SEGMENTS - CLOCK_SHIFT ) % NUM_SEGMENTS;
206
static int segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
207
if( reset ) segment = NUM_SEGMENTS - 1 - CLOCK_SHIFT;
210
// reset the text renderer
211
TextRenderer::reset_buffer();
209
// what needs to be drawn?
210
bool draw_tick = !segment && second % 5 == 0;
211
bool draw_second = !segment && second == time_seconds;
212
bool draw_minute = !segment && second == time_minutes;
213
bool draw_hour = !segment && second == time_hours;
217
ledOn( 8, draw_tick || draw_minute );
218
for( int a = 6; a <= 7; a++ )
219
ledOn( a, draw_minute || draw_second );
220
for( int a = 0; a <= 5; a++ )
221
ledOn( a, draw_minute || draw_second || draw_hour );
224
if( ++segment >= NUM_SECOND_SEGMENTS ) {
231
// draw a display segment
232
void drawNextSegment( bool reset )
234
static int draw_mode = 0;
236
// handle mode switch requests
237
if( reset && inc_draw_mode ) {
238
inc_draw_mode = false;
245
switch( draw_mode ) {
246
case 0: drawNextSegment_test( reset ); break;
247
case 1: drawNextSegment_time( reset ); break;
215
switch( _major_mode ) {
217
switch( _minor_mode ) {
218
case ANALOGUE_CLOCK_IDX: analogue_clock_draw_reset(); break;
219
case DIGITAL_CLOCK_IDX: digital_clock_draw_reset(); break;
222
case SETTINGS_MODE_IDX: settings_mode_draw_reset(); break;
225
// tell the text services we're starting a new frame
230
switch( _major_mode ) {
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;
238
case SETTINGS_MODE_IDX: settings_mode_draw( segment ); break;
241
// draw any text that was rendered
242
TextRenderer::output_buffer();
245
if( ++segment >= NUM_SEGMENTS ) segment = 0;
247
if( --segment < 0 ) segment = NUM_SEGMENTS - 1;
252
252
// calculate time constants when a new pulse has occurred
253
void calculateSegmentTimes()
253
void calculate_segment_times()
255
255
// check for overflows, and only recalculate times if there isn't
256
256
// one (if there is, we'll just go with the last pulse's times)
257
if( new_pulse_at > last_pulse_at )
257
if( _new_pulse_at > _last_pulse_at )
259
259
// 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;
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;
266
266
// now we have dealt with this pulse, save the pulse time and
267
267
// clear new_pulse_at, ready for the next pulse
268
last_pulse_at = new_pulse_at;
268
_last_pulse_at = _new_pulse_at;
273
273
// wait until it is time to draw the next segment or a new pulse has
275
void waitTillNextSegment( bool reset )
275
void wait_till_end_of_segment( bool reset )
277
277
static unsigned long end_time = 0;
281
end_time = last_pulse_at;
281
end_time = _last_pulse_at;
283
283
// 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;
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;
292
while( micros() < end_time && !new_pulse_at );
292
while( micros() < end_time && !_new_pulse_at );
296
296
// ISR to handle the pulses from the fan's tachiometer
297
void fanPulseHandler()
297
void fan_pulse_handler()
299
299
// the fan actually sends two pulses per revolution. These pulses
300
300
// may not be exactly evenly distributed around the rotation, so