diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/librtlsdr.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/librtlsdr.c b/src/librtlsdr.c index adb9530..0853767 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -485,12 +485,13 @@ void rtlsdr_init_baseband(rtlsdr_dev_t *dev) for (i = 0; i < sizeof (fir_coeff); i++) rtlsdr_demod_write_reg(dev, 1, 0x1c + i, fir_coeff[i], 1); - rtlsdr_demod_write_reg(dev, 0, 0x19, 0x25, 1); + /* enable SDR mode, disable DAGC (bit 5) */ + rtlsdr_demod_write_reg(dev, 0, 0x19, 0x05, 1); /* init FSM state-holding register */ rtlsdr_demod_write_reg(dev, 1, 0x93, 0xf0, 1); - /* disable AGC (en_dagc, bit 0) */ + /* disable AGC (en_dagc, bit 0) (this seems to have no effect) */ rtlsdr_demod_write_reg(dev, 1, 0x11, 0x00, 1); /* disable PID filter (enable_PID = 0) */ @@ -842,7 +843,15 @@ int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on) if (!dev) return -1; - return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x23 : 0x25 , 1); + return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x03 : 0x05, 1); +} + +int rtlsdr_set_agc_mode(rtlsdr_dev_t *dev, int on) +{ + if (!dev) + return -1; + + return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x25 : 0x05, 1); } static rtlsdr_dongle_t *find_known_device(uint16_t vid, uint16_t pid) |