KB8PMY
/
tinySA
mirror of https://github.com/erikkaashoek/tinySA.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

AM modulation and other improvements

Browse Source
pull/34/head
erikkaashoek 3 years ago
parent a69c265f28
commit d805a11fff
4 changed files with 60 additions and 34 deletions
Show Stats Download Patch File Download Diff File

6
plot.c
Unescape View File

@ -1517,8 +1517,10 @@ static void trace_print_value_string( // Only used at one place
unit_index+= MAX_UNIT_TYPE;
freq_t ref_freq = markers[ref_marker].frequency;
int ridx = markers[ref_marker].index;
if (ridx > idx) {freq = ref_freq - freq; idx = ridx - idx; *ptr2++ = '-';}
else {freq = freq - ref_freq; idx = idx - ridx; *ptr2++ = '+';}
if (ridx > idx) {idx = ridx - idx; *ptr2++ = '-';}
else {idx = idx - ridx; *ptr2++ = '+';}
if (ref_freq > freq) {freq = ref_freq - freq;}
else {freq = freq - ref_freq;}
v-= marker_to_value(ref_marker);
} else
freq += (setting.frequency_offset - FREQUENCY_SHIFT);

53
sa_core.c
Unescape View File

@ -236,8 +236,13 @@ void set_output_path(freq_t f, float level)
if (signal_path == PATH_HIGH) {
return; //TODO setup high path
}
#if 1 // Symetric modulation
float ATTENUATION_RESERVE = 3.0;
if (setting.modulation == MO_AM)
ATTENUATION_RESERVE = 6.0;
#else
#define ATTENUATION_RESERVE 3.0 // Always 3dB in attenuator
#endif
// if (signal_path != PATH_LEAKAGE)
level += ATTENUATION_RESERVE;
@ -279,7 +284,7 @@ void set_output_path(freq_t f, float level)
}
int ar = 31 - ATTENUATION_RESERVE;
if (setting.modulation == MO_AM) // reserve attenuator range for AM modulation
ar = 4;
ar = 6;
while (a + ar < blw && d > LOWEST_LEVEL) { // reduce till it fits attenuator ((ar+ATTENUATION_RESERVE) .. ATTENUATION_RESERVE)
d--;
blw = BELOW_MAX_DRIVE(d);
@ -1254,8 +1259,16 @@ void set_level(float v) // Set the output level in dB in high/low output
v -= LOW_OUT_OFFSET;
if (v < SL_GENLOW_LEVEL_MIN)
v = SL_GENLOW_LEVEL_MIN;
#if 1 // Symetric modulation
if (setting.modulation == MO_AM) {
// if (v > SL_GENLOW_LEVEL_MAX -3)
// v = SL_GENLOW_LEVEL_MAX - 3;
} else
#endif
if (v > SL_GENLOW_LEVEL_MAX)
v = SL_GENLOW_LEVEL_MAX;
v += LOW_OUT_OFFSET;
// set_attenuation(setting.level - LOW_OUT_OFFSET);
}
@ -3304,7 +3317,7 @@ pureRSSI_t perform(bool break_on_operation, int i, freq_t f, int tracking) /
#ifdef TINYSA3
int modulation_table;
#endif
int modulation_count_iter = 0;
// int modulation_count_iter = 0;
#ifdef __NEW_SWITCHES__
// int direct = ((setting.mode == M_LOW && config.direct && f > DIRECT_START && f<DIRECT_STOP) || (setting.mode == M_GENLOW && f >= MINIMUM_DIRECT_FREQ && f < ultra_start) );
#else
@ -3376,7 +3389,7 @@ pureRSSI_t perform(bool break_on_operation, int i, freq_t f, int tracking) /
clock_at_48MHz();
#endif
#ifdef TINYSA4 // Calculate FM modulation
#ifdef TINYSA4 // Calculate AM/FM modulation
if (setting.modulation == MO_AM) {
int sinus_index = 1;
config.cor_am = -180; // Initialize with some spare
@ -3385,15 +3398,28 @@ pureRSSI_t perform(bool break_on_operation, int i, freq_t f, int tracking) /
sinus_index <<= 1;
modulation_steps >>= 1;
}
int offset347 = setting.modulation_depth_x100 * 347 / 100;
int offset347 = (setting.modulation_depth_x100 < 100 ? setting.modulation_depth_x100 - 6: setting.modulation_depth_x100) * 347 / 100;
for (int i = 0; i < modulation_steps/4 + 1; i++) {
#if 1 // Symetric modulation
fm_modulation[i] = offset347 * sinus[i*sinus_index]/347;
fm_modulation[modulation_steps/2 - i] = fm_modulation[i];
fm_modulation[modulation_steps/2 + i] = - offset347 * sinus[i*sinus_index]/347;
fm_modulation[modulation_steps - i] = fm_modulation[modulation_steps/2 + i];
#else
fm_modulation[i] = (694 - offset347 + offset347 * sinus[i*sinus_index]/347);
fm_modulation[modulation_steps/2 - i] = fm_modulation[i];
fm_modulation[modulation_steps/2 + i] = (694 - offset347 - offset347 * sinus[i*sinus_index]/347);
fm_modulation[modulation_steps - i] = fm_modulation[modulation_steps/2 + i];
#endif
}
for (int i=0; i < modulation_steps; i++) {
#if 1 // symetrical modulation
fm_modulation[i] = roundf(20.0*logf(1.0+(fm_modulation[i]/347.0)));
#else
fm_modulation[i] = roundf(10.0*logf(fm_modulation[i]*fm_modulation[i]/(694.0*694.0)));
#endif
if (fm_modulation[i] > 12)
fm_modulation[i] = 12;
if (fm_modulation[i] < -63)
fm_modulation[i] = -63;
}
@ -3403,7 +3429,7 @@ pureRSSI_t perform(bool break_on_operation, int i, freq_t f, int tracking) /
config.cor_am = -180; // Initialize with some spare
modulation_steps = MAX_MODULATION_STEPS; // Search modulation steps that fit frequency
//modulation_steps = 8; // <-----------------TEMP!!!!!
while ( (modulation_delay = (8000000/ modulation_steps ) / setting.modulation_frequency + config.cor_am) < 20 && modulation_steps > 4) {
while ( (modulation_delay = (8000000/ modulation_steps ) / setting.modulation_frequency + config.cor_am) < 100 && modulation_steps > 4) {
sinus_index <<= 1;
modulation_steps >>= 1;
}
@ -3695,7 +3721,7 @@ modulation_again:
int p = setting.attenuate_x2 + am_modulation[modulation_counter];
#endif
if (p>63)p = 63;
else if (p< 0) p = 0;
else if (p< 0) { p = 0; if (!level_error) { level_error = true; redraw_request |= REDRAW_CAL_STATUS; draw_all(true);}}
#ifdef __PE4302__
PE4302_Write_Byte(p);
#endif
@ -4075,7 +4101,7 @@ again: // Spur redu
setting.increased_R = true;
freq_t tf = ((lf + actual_rbw_x10*1000) / TXCO_DIV3) * TXCO_DIV3;
if (tf + actual_rbw_x10*100 >= lf && tf < lf + actual_rbw_x10*100) // 10MHz
ADF4351_R_counter(4); // To avoid PLL Loop shoulders at multiple of 10MHz
ADF4351_R_counter(2); // To avoid PLL Loop shoulders at multiple of 10MHz
else
ADF4351_R_counter(3); // To avoid PLL Loop shoulders
} else
@ -4126,7 +4152,7 @@ again: // Spur redu
if (actual_rbw_x10 <= 3000) {
setting.increased_R = true;
freq_t tf = ((lf + actual_rbw_x10*1000) / TXCO_DIV3) * TXCO_DIV3;
if (tf + actual_rbw_x10*100 >= lf && tf < lf + actual_rbw_x10*100) // 10MHz
if (tf + actual_rbw_x10*1000 >= lf && tf < lf + actual_rbw_x10*1000) // 10MHz
ADF4351_R_counter(4); // To avoid PLL Loop shoulders at multiple of 10MHz
else
ADF4351_R_counter(3); // To avoid PLL Loop shoulders
@ -4193,7 +4219,14 @@ again: // Spur redu
//
if (signal_path == PATH_LOW || signal_path == PATH_ULTRA) ADF4351_drive(actual_drive); // Max drive
}
set_freq(ADF4351_LO, (target_f/10000)*10000); // <----------- TESTING !!!!!!!!!!!!!!
if (signal_path == PATH_LEAKAGE)
set_freq(ADF4351_LO, target_f);
else {
#define MAX_COMPENSATION 50000
if ( target_f < real_old_freq[ADF4351_LO] - MAX_COMPENSATION || target_f > real_old_freq[ADF4351_LO] + MAX_COMPENSATION )
set_freq(ADF4351_LO, target_f);
}
#if 1 // Compensate frequency ADF4350 error with SI4468
if (actual_rbw_x10 < 10000 || setting.frequency_step < 100000) { //TODO always compensate for the moment as this eliminates artifacts at larger RBW
int32_t error_f = 0;

9
si4468.c
Unescape View File

@ -364,7 +364,7 @@ void ADF4351_WriteRegister32(int channel, const uint32_t value)
void ADF4351_Set(int channel)
{
#if 1
#if 0
for (int i = 5; i >= 0; i--) {
if (registers[i] != old_registers[i])
goto update;
@ -435,11 +435,10 @@ void ADF4351_R_counter(int R)
for (int channel=0; channel < 6; channel++) {
PFDRFout[channel] = (local_setting_frequency_30mhz_x100 * (dbl?2:1)) / R;
}
clear_frequency_cache(); // When R changes the possible frequencies will change
maskedWrite(registers[2],14, 0x3FF, R);
// registers[2] &= ~(((uint32_t)0x3FF) << 14);
// registers[2] |= (((uint32_t) R) << 14);
ADF4351_Set(0);
// ADF4351_Set(0); // Let next frequency set do the writing
// ADF4351_force_refresh();
clear_frequency_cache(); // When R changes the possible frequencies will change
}
void ADF4351_recalculate_PFDRFout(void){

20
ui_sa.c
Unescape View File

@ -3326,20 +3326,12 @@ static const menuitem_t menu_top[] = {
static void menu_item_modify_attribute( // To modify menu buttons with keypad modes
const menuitem_t *menu, int item, ui_button_t *button)
{
if (menu == menu_settings) {
// if (item == 2)
// button->icon = setting.auto_IF ? BUTTON_ICON_CHECK_AUTO : BUTTON_ICON_CHECK_MANUAL;
} else if (menu == menu_scanning_speed) {
// if (item == 0)
// button->icon = setting.step_delay > 0 ? BUTTON_ICON_CHECK_MANUAL : BUTTON_ICON_CHECK_AUTO;
// else if (item == 1)
// button->icon =setting.offset_delay > 0 ? BUTTON_ICON_CHECK_MANUAL : BUTTON_ICON_CHECK_AUTO;
} else if (menu == menu_display) {
if (item == 4)
if (menu == menu_display) {
if (item == 5)
button->icon = setting.sweep_time_us != 0 ? BUTTON_ICON_CHECK_MANUAL : BUTTON_ICON_CHECK_AUTO;
} else if (menu == menu_sweep_speed) {
if (item == 3)
button->icon = setting.fast_speedup != 0 ? BUTTON_ICON_CHECK_MANUAL : BUTTON_ICON_CHECK_AUTO;
// } else if (menu == menu_sweep_speed) {
// if (item == 3)
// button->icon = setting.fast_speedup != 0 ? BUTTON_ICON_CHECK_MANUAL : BUTTON_ICON_CHECK_AUTO;
} else if (menu == menu_reflevel) {
if (item == 1)
button->icon = setting.auto_reflevel ? BUTTON_ICON_GROUP: BUTTON_ICON_GROUP_CHECKED;
@ -3379,7 +3371,7 @@ static void fetch_numeric_target(uint8_t mode)
break;
case KM_REFLEVEL:
uistat.value = setting.reflevel;
plot_printf(uistat.text, sizeof uistat.text, "%f", uistat.value);
plot_printf(uistat.text, sizeof uistat.text, "%.3F", uistat.value);
break;
case KM_ATTENUATION:
uistat.value = get_attenuation();

Write Preview
Loading…
Cancel
Save

Powered by TurnKey Linux.