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add freq center/span

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This commit is contained in:
TT 2016-12-11 21:51:54 +09:00
parent 8014d3442e
commit 52dce51f31
3 changed files with 113 additions and 44 deletions
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49
plot.c
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@ -74,10 +74,16 @@ void set_sweep(int32_t start, int stop)
{
int32_t gdigit = 100000000;
int32_t grid;
fstart = start;
fstop = stop;
fspan = stop - start;
if (stop > 0) {
fstart = start;
fstop = stop;
fspan = stop - start;
} else {
fspan = -stop;
fstart = start;
fstop = stop;
}
while (gdigit > 100) {
grid = 5 * gdigit;
if (fspan / grid >= 4)
@ -1234,16 +1240,31 @@ void
draw_frequencies(void)
{
char buf[24];
chsnprintf(buf, 24, "START %d.%03d %03d MHz ",
(int)(fstart / 1000000),
(int)((fstart / 1000) % 1000),
(int)(fstart % 1000));
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
chsnprintf(buf, 24, "STOP %d.%03d %03d MHz",
(int)(fstop / 1000000),
(int)((fstop / 1000) % 1000),
(int)(fstop % 1000));
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
if (fstop > 0) {
chsnprintf(buf, 24, "START %d.%03d %03d MHz ",
(int)(fstart / 1000000),
(int)((fstart / 1000) % 1000),
(int)(fstart % 1000));
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
chsnprintf(buf, 24, "STOP %d.%03d %03d MHz",
(int)(fstop / 1000000),
(int)((fstop / 1000) % 1000),
(int)(fstop % 1000));
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
} else {
int fcenter = fstart;
int fspan = -fstop;
chsnprintf(buf, 24, "CENTER %d.%03d %03d MHz ",
(int)(fcenter / 1000000),
(int)((fcenter / 1000) % 1000),
(int)(fcenter % 1000));
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
chsnprintf(buf, 24, "SPAN %d.%03d %03d MHz",
(int)(fspan / 1000000),
(int)((fspan / 1000) % 1000),
(int)(fspan % 1000));
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
}
}
void