ttrftech/NanoVNA
1
0
Fork 0
mirror of https://github.com/ttrftech/NanoVNA.git synced 2025-12-06 03:31:59 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

show time domain range

Browse source
This commit is contained in:
cho45 2019-09-11 21:22:42 +09:00
parent 6bad9de606
commit a3b511f468
2 changed files with 47 additions and 31 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

77
plot.c
View file

@ -701,12 +701,17 @@ trace_get_info(int t, char *buf, int len)
}
}
static float time_of_index(int idx) {
return 1.0 / (float)(frequencies[1] - frequencies[0]) / 128.0 * idx;
}
static float distance_of_index(int idx) {
#define SPEED_OF_LIGHT 299792458
float distance = ((float)idx * (float)SPEED_OF_LIGHT) / ( (float)(frequencies[1] - frequencies[0]) * 128.0 * 2.0);
return distance * (velocity_factor / 100.0);
}
static inline void
mark_map(int x, int y)
{
@ -1377,7 +1382,7 @@ cell_draw_marker_info(int m, int n, int w, int h)
frequency_string(buf, sizeof buf, frequencies[idx]);
cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
} else {
chsnprintf(buf, sizeof buf, "%.1f m (VF=%d%%)", distance_of_index(idx), velocity_factor);
chsnprintf(buf, sizeof buf, "%d ns %.1f m", (uint16_t)(time_of_index(idx) * 1e9), distance_of_index(idx));
cell_drawstring_5x7(w, h, buf, xpos, ypos, 0xffff);
}
@ -1421,37 +1426,47 @@ void
draw_frequencies(void)
{
char buf[24];
if (frequency1 > 0) {
int start = frequency0;
int stop = frequency1;
strcpy(buf, "START ");
frequency_string(buf+6, 24-6, start);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
strcpy(buf, "STOP ");
frequency_string(buf+5, 24-5, stop);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
} else if (frequency1 < 0) {
int fcenter = frequency0;
int fspan = -frequency1;
strcpy(buf, "CENTER ");
frequency_string(buf+7, 24-7, fcenter);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
strcpy(buf, "SPAN ");
frequency_string(buf+5, 24-5, fspan);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
if ((domain_mode & DOMAIN_MODE) == DOMAIN_FREQ) {
if (frequency1 > 0) {
int start = frequency0;
int stop = frequency1;
strcpy(buf, "START ");
frequency_string(buf+6, 24-6, start);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
strcpy(buf, "STOP ");
frequency_string(buf+5, 24-5, stop);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
} else if (frequency1 < 0) {
int fcenter = frequency0;
int fspan = -frequency1;
strcpy(buf, "CENTER ");
frequency_string(buf+7, 24-7, fcenter);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
strcpy(buf, "SPAN ");
frequency_string(buf+5, 24-5, fspan);
strcat(buf, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
} else {
int fcenter = frequency0;
chsnprintf(buf, 24, "CW %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, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
}
} else {
int fcenter = frequency0;
chsnprintf(buf, 24, "CW %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, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
strcpy(buf, "START 0s ");
ili9341_drawstring_5x7(buf, OFFSETX, 233, 0xffff, 0x0000);
strcpy(buf, "STOP ");
chsnprintf(buf+5, 24-5, "%d ns", (uint16_t)(time_of_index(101) * 1e9));
strcat(buf, " ");
ili9341_drawstring_5x7(buf, 205, 233, 0xffff, 0x0000);
}
}

1
ui.c
View file

@ -695,6 +695,7 @@ menu_transform_cb(int item)
} else {
domain_mode = (domain_mode & ~DOMAIN_MODE) | DOMAIN_TIME;
}
draw_frequencies();
ui_mode_normal();
break;
case 1: