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disable e4k enhanced mixer gain as it seems to have no effect

This commit is contained in:
Dimitri Stolnikov 2012-08-05 16:36:58 +02:00
parent edbcf3352d
commit 14f7dd4461
1 changed files with 7 additions and 2 deletions
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9
software/libosmosdr/src/libosmosdr.c
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@ -196,14 +196,18 @@ int e4k_set_enh_gain(void *dev, int32_t gain) {
int e4k_set_gain(void *dev, int gain) {
int8_t mixgain = (gain > 340) ? 12 : 4;
#if 0
int enhgain = (gain - 420);
if(e4k_set_lna_gain(dev, min(300, gain - 40)))
#endif
if(e4k_set_lna_gain(dev, min(300, gain - mixgain * 10)))
return -1;
if(e4k_mixer_gain_set(dev, mixgain))
return -1;
#if 0 /* enhanced mixer gain seems to have no effect */
if(enhgain >= 0)
if(e4k_set_enh_gain(dev, enhgain))
return -1;
#endif
return 0;
}
@ -299,8 +303,9 @@ uint32_t osmosdr_get_center_freq(osmosdr_dev_t *dev)
int osmosdr_get_tuner_gains(osmosdr_dev_t *dev, int *gains)
{
/* all gain values are expressed in tenths of a dB */
const int e4k_gains[] = { -10, 15, 40, 65, 90, 115, 140, 165, 190, 215,
240, 290, 340, 420, 430, 450, 470, 490 };
240, 290, 340, 420 };
int len = sizeof(e4k_gains);
if (!dev)