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fw/antorcha.c: add backward sweep

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This commit is contained in:
Werner Almesberger 2012-06-25 11:37:16 -03:00
parent 00180fb287
commit cb846be507
1 changed files with 23 additions and 6 deletions
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29
fw/antorcha.c
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@ -24,7 +24,7 @@
#include "io.h"
static struct sweep sweep = {
static struct sweep fwd_sweep = {
.pixel_ticks = 1100, /* 1.1 ms */
.left = 0,
.right = MAX_LINES-1,
@ -32,6 +32,14 @@ static struct sweep sweep = {
};
static struct sweep bwd_sweep = {
.pixel_ticks = 1100, /* 1.1 ms */
.left = 0,
.right = MAX_LINES-1,
.forward = 0,
};
static volatile enum sync_state {
IDLE, /* undecided */
BWD, /* backward sweep */
@ -94,7 +102,7 @@ static void sync_sweep(bool x, uint16_t v)
break;
tR0 = t;
state = RIGHT;
// wake = 1;
wake = 1;
break;
}
}
@ -105,11 +113,18 @@ static void submit_fwd_sweep(void)
#if 0
uint32_t tIMG;
tIMG = (sweep.right-sweep.left+1)*(sweep.pixel_ticks)/2;
sweep.start_ticks = tL0+110000-tIMG/2;
tIMG = (fwd_sweep.right-fwd_sweep.left+1)*(fwd_sweep.pixel_ticks)/2;
fwd_sweep.start_ticks = tL0+110000-tIMG/2;
#endif
sweep.start_ticks = uptime()+70000;
sweep_image(&sweep);
fwd_sweep.start_ticks = tL0+70000;
sweep_image(&fwd_sweep);
}
static void submit_bwd_sweep(void)
{
bwd_sweep.start_ticks = tR0+50000;
sweep_image(&bwd_sweep);
}
@ -144,6 +159,8 @@ sei();
wake = 0;
if (state == LEFT)
submit_fwd_sweep();
else if (state == RIGHT)
submit_bwd_sweep();
}
}
}