170
// turn an led on/off
171
void ledOn( int num, bool on )
173
if( num < 0 || num > 9 ) return;
175
// convert to pin no.
178
// pin 4 needs to be inverted (it's driving a PNP)
179
if( num == 4 ) on = !on;
181
digitalWrite( num, on? HIGH : LOW );
185
163
// draw a segment for the test display
186
void drawNextSegment_test( int segment )
164
void drawNextSegment_test( bool reset )
188
// turn on outside LEDs
166
// keep track of segment
167
static unsigned int segment = 0;
168
if( reset ) segment = 0;
171
// turn on inside and outside LEDs
172
digitalWrite( 4, HIGH );
173
digitalWrite( 13, HIGH );
191
175
// display segment number in binary across in the inside LEDs,
192
176
// with the LED on pin 12 showing the least-significant bit
193
for( int a = 0; a < 9; a++ )
194
ledOn( 8 - a, ( segment >> a ) & 1 );
177
for( int a = 0; a < 8; a++ )
178
digitalWrite( 12 - a, ( ( segment >> a ) & 1 )? HIGH : LOW );
198
182
// draw a segment for the time display
199
void drawNextSegment_time( int segment )
183
void drawNextSegment_time( bool reset )
201
int second = segment / NUM_SECOND_SEGMENTS;
202
int second_segment = segment % NUM_SECOND_SEGMENTS;
185
static unsigned int second = 0;
186
static unsigned int segment = 0;
188
// handle display reset
204
194
// what needs to be drawn?
205
bool draw_tick = ( !second_segment && second % 5 == 0 && second ) ||
206
( second == 0 && second_segment == 1 ) ||
207
( second == 59 && second_segment == NUM_SECOND_SEGMENTS - 1 );
208
bool draw_second = !second_segment && second == time_seconds;
209
bool draw_minute = !second_segment && second == time_minutes;
210
bool draw_hour = segment == time_hours * 5 * NUM_SECOND_SEGMENTS +
211
( 5 * NUM_SECOND_SEGMENTS * time_minutes / 60 );
195
bool draw_tick = !segment && second % 5 == 0;
196
bool draw_second = !segment && second == time_seconds;
197
bool draw_minute = !segment && second == time_minutes;
198
bool draw_hour = !segment && second == time_hours;
215
ledOn( 8, draw_tick || draw_second );
216
for( int a = 6; a <= 7; a++ )
217
ledOn( a, draw_minute || draw_second );
218
for( int a = 0; a <= 5; a++ )
219
ledOn( a, draw_minute || draw_second || draw_hour );
201
digitalWrite( 13, HIGH );
202
digitalWrite( 12, draw_tick || draw_minute );
203
for( int a = 10; a <= 11; a++ )
204
digitalWrite( a, draw_minute || draw_second );
205
for( int a = 4; a <= 9; a++ )
206
digitalWrite( 10, draw_minute | draw_second || draw_hour );
209
if( ++segment >= NUM_SECOND_SEGMENTS ) {