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fw/sweep.c (TIMER1_OVF_vect): turn off the LEDs when done
This means that the image no longer has to contain terminating all-zero rows.
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fw/sweep.c
19
fw/sweep.c
@ -49,8 +49,14 @@ ISR(TIMER1_OVF_vect)
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/* if at the end of the image, only update the time */
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/* if at the end of the image, only update the time */
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if (curr_line == end_line)
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if (curr_line == end_line) {
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PORTB &= 0x3f;
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PORTC = 0;
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PORTD = 0;
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ICR1 = 0xffff;
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sweeping = 0;
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return;
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return;
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}
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/* wait before starting the image */
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/* wait before starting the image */
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@ -60,6 +66,8 @@ ISR(TIMER1_OVF_vect)
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return;
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return;
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}
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}
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/* if done, lights out and slow down */
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/* output the next line */
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/* output the next line */
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PORTB = (PORTB & 0x3f) | (curr_line->cb & 0xc0);
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PORTB = (PORTB & 0x3f) | (curr_line->cb & 0xc0);
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@ -73,14 +81,9 @@ ISR(TIMER1_OVF_vect)
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else
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else
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curr_line--;
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curr_line--;
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/* wait until the next pixel (or slow down if we're done) */
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/* wait until the next pixel */
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if (curr_line == end_line) {
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ICR1 = pixel_ticks;
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ICR1 = 0xffff;
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sweeping = 0;
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} else {
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ICR1 = pixel_ticks;
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}
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}
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}
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