diff options
Diffstat (limited to 'software/libosmosdr/src/libosmosdr.c')
| -rw-r--r-- | software/libosmosdr/src/libosmosdr.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/software/libosmosdr/src/libosmosdr.c b/software/libosmosdr/src/libosmosdr.c index b853b0f..6fde675 100644 --- a/software/libosmosdr/src/libosmosdr.c +++ b/software/libosmosdr/src/libosmosdr.c @@ -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) |