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correctly clear DDC shift and if_freq registers 

This fixes the 2 kHz LO shift.

Signed-off-by: Steve Markgraf <steve@steve-m.de>
master
Steve Markgraf 2012-06-03 21:02:48 +02:00
parent 7bd3933c41
commit 9d58aec8cf
1 changed files with 3 additions and 2 deletions
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5
src/librtlsdr.c
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@ -470,8 +470,9 @@ void rtlsdr_init_baseband(rtlsdr_dev_t *dev)
rtlsdr_demod_write_reg(dev, 1, 0x15, 0x00, 1);
rtlsdr_demod_write_reg(dev, 1, 0x16, 0x0000, 2);
/* set IF-frequency to 0 Hz */
rtlsdr_demod_write_reg(dev, 1, 0x19, 0x0000, 2);
/* clear both DDC shift and IF frequency registers */
for (i = 0; i < 6; i++)
rtlsdr_demod_write_reg(dev, 1, 0x16 + i, 0x00, 1);
/* set FIR coefficients */
for (i = 0; i < sizeof (fir_coeff); i++)