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chore: use table to adjust gain related to freq

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TT 2019-10-05 19:08:20 +09:00
parent 50bce64575
commit 18c529984b
1 changed files with 23 additions and 24 deletions
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47
main.c
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@ -257,36 +257,35 @@ static void cmd_reset(BaseSequentialStream *chp, int argc, char *argv[])
;
}
const int8_t gain_table[] = {
0, // 0 ~ 300MHz
40, // 300 ~ 600MHz
50, // 600 ~ 900MHz
75, // 900 ~ 1200MHz
85, // 1200 ~ 1400MHz
95 // 1400MHz ~
};
static int
adjust_gain(int newfreq)
{
int delay = 0;
int new_order = newfreq / FREQ_HARMONICS;
int old_order = frequency / FREQ_HARMONICS;
if (new_order != old_order) {
tlv320aic3204_set_gain(gain_table[new_order], gain_table[new_order]);
delay += 10;
}
return delay;
}
int set_frequency(int freq)
{
int delay = 0;
if (frequency == freq)
return delay;
if (freq > 1400000000 && frequency <= 1400000000) {
tlv320aic3204_set_gain(95, 95);
delay += 10;
} else
if (freq > 1200000000 && frequency <= 1200000000) {
tlv320aic3204_set_gain(85, 85);
delay += 10;
} else
if (freq > 900000000 && frequency <= 900000000) {
tlv320aic3204_set_gain(75, 75);
delay += 10;
} else
if (freq > 600000000 && frequency <= 600000000) {
tlv320aic3204_set_gain(50, 50);
delay += 10;
} else
if (freq > FREQ_HARMONICS && frequency <= FREQ_HARMONICS) {
tlv320aic3204_set_gain(40, 40);
delay += 10;
} else
if (freq <= FREQ_HARMONICS && frequency > FREQ_HARMONICS) {
tlv320aic3204_set_gain(0, 0);
delay += 10;
}
delay += adjust_gain(freq);
int8_t ds = drive_strength;
if (ds == DRIVE_STRENGTH_AUTO) {