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feat: add controling stimulus power and gain by frequency

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TT 2019-08-10 13:04:48 +09:00
parent 10a58f9580
commit c6a4b651d0
2 changed files with 29 additions and 11 deletions
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32
main.c
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@ -41,9 +41,12 @@ void sweep(void);
static MUTEX_DECL(mutex);
#define DRIVE_STRENGTH_AUTO (-1)
#define FREQ_HARMONICS 300000000
int32_t frequency_offset = 5000;
int32_t frequency = 10000000;
uint8_t drive_strength = SI5351_CLK_DRIVE_STRENGTH_2MA;
int8_t drive_strength = DRIVE_STRENGTH_AUTO;
int8_t frequency_updated = FALSE;
int8_t sweep_enabled = TRUE;
int8_t cal_auto_interpolate = TRUE;
@ -126,10 +129,25 @@ static void cmd_reset(BaseSequentialStream *chp, int argc, char *argv[])
int set_frequency(int freq)
{
int delay = 0;
if (frequency != freq) {
delay = si5351_set_frequency_with_offset(freq, frequency_offset, drive_strength);
frequency = freq;
if (frequency == freq)
return delay;
if (freq > FREQ_HARMONICS && frequency <= FREQ_HARMONICS) {
tlv320aic3204_set_gain(30, 30);
delay += 10;
}
if (freq <= FREQ_HARMONICS && frequency > FREQ_HARMONICS) {
tlv320aic3204_set_gain(0, 0);
delay += 10;
}
int8_t ds = drive_strength;
if (ds == DRIVE_STRENGTH_AUTO) {
ds = freq > FREQ_HARMONICS ? SI5351_CLK_DRIVE_STRENGTH_8MA : SI5351_CLK_DRIVE_STRENGTH_2MA;
}
delay += si5351_set_frequency_with_offset(freq, frequency_offset, ds);
frequency = freq;
return delay;
}
@ -160,7 +178,7 @@ static void cmd_freq(BaseSequentialStream *chp, int argc, char *argv[])
static void cmd_power(BaseSequentialStream *chp, int argc, char *argv[])
{
if (argc != 1) {
chprintf(chp, "usage: power {0-3}\r\n");
chprintf(chp, "usage: power {0-3|-1}\r\n");
return;
}
drive_strength = atoi(argv[0]);
@ -458,10 +476,10 @@ void sweep(void)
rewind:
frequency_updated = FALSE;
delay = 3;
//delay = 3;
for (i = 0; i < sweep_points; i++) {
set_frequency(frequencies[i]);
delay = set_frequency(frequencies[i]);
tlv320aic3204_select_in3(); // CH0:REFLECT
wait_dsp(delay);

8
si5351.c
View file

@ -306,7 +306,7 @@ int
si5351_set_frequency_with_offset(int freq, int offset, uint8_t drive_strength)
{
int band;
int delay = 5;
int delay = 3;
uint32_t ofreq = freq + offset;
uint32_t rdiv = SI5351_R_DIV_1;
if (freq > 300000000) {
@ -375,11 +375,11 @@ si5351_set_frequency_with_offset(int freq, int offset, uint8_t drive_strength)
case 2:
// div by 4 mode. both PLL A and B are dedicated for CLK0, CLK1
si5351_set_frequency_fixeddiv(0, SI5351_PLL_A, ofreq, 4,
SI5351_CLK_DRIVE_STRENGTH_2MA);
si5351_set_frequency_fixeddiv(1, SI5351_PLL_B, freq, 4, drive_strength);
si5351_set_frequency_fixedpll(2, SI5351_PLL_B, freq * 4, CLK2_FREQUENCY,
SI5351_R_DIV_1, SI5351_CLK_DRIVE_STRENGTH_2MA);
si5351_set_frequency_fixeddiv(0, SI5351_PLL_A, ofreq, 4,
SI5351_CLK_DRIVE_STRENGTH_2MA);
break;
}
@ -388,7 +388,7 @@ si5351_set_frequency_with_offset(int freq, int offset, uint8_t drive_strength)
#if 1
si5351_enable_output();
#endif
delay += 0;
delay += 10;
}
current_band = band;