mirror/rtl-sdr-blog
1
0
Fork 0
mirror of https://github.com/rtlsdrblog/rtl-sdr-blog.git synced 2024-12-25 10:28:28 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

enable i2c repeater mode before applying filter bandwidth

Browse Source
This commit is contained in:
Dimitri Stolnikov 2012-05-07 23:39:30 +02:00
parent e042c36cb5
commit 8402124e6f
1 changed files with 11 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/rtl-sdr.c
View File

@ -509,13 +509,9 @@ int rtlsdr_deinit_baseband(rtlsdr_dev_t *dev)
if (!dev)
return -1;
if (dev->tuner) {
/* deinitialize tuner */
if (dev->tuner && dev->tuner->exit) {
rtlsdr_set_i2c_repeater(dev, 1);
if (dev->tuner->exit)
r = dev->tuner->exit(dev);
r = dev->tuner->exit(dev); /* deinitialize tuner */
rtlsdr_set_i2c_repeater(dev, 0);
}
@ -533,7 +529,7 @@ int rtlsdr_set_xtal_freq(rtlsdr_dev_t *dev, uint32_t rtl_freq, uint32_t tuner_fr
return -1;
if (rtl_freq > 0 &&
(rtl_freq < MIN_RTL_XTAL_FREQ || rtl_freq > MAX_RTL_XTAL_FREQ))
(rtl_freq < MIN_RTL_XTAL_FREQ || rtl_freq > MAX_RTL_XTAL_FREQ))
return -2;
if (dev->rtl_xtal != rtl_freq) {
@ -585,18 +581,16 @@ int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
return -1;
if (dev->tuner->set_freq) {
rtlsdr_set_i2c_repeater(dev, 1);
f *= 1.0 + dev->corr / 1e6;
rtlsdr_set_i2c_repeater(dev, 1);
r = dev->tuner->set_freq(dev, (uint32_t) f);
rtlsdr_set_i2c_repeater(dev, 0);
if (!r)
dev->freq = freq;
else
dev->freq = 0;
rtlsdr_set_i2c_repeater(dev, 0);
}
return r;
@ -681,8 +675,6 @@ int rtlsdr_set_tuner_gain_mode(rtlsdr_dev_t *dev, int mode)
return r;
}
int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
{
uint16_t tmp;
@ -704,8 +696,11 @@ int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
if ( ((double)samp_rate) != real_rate )
fprintf(stderr, "Exact sample rate is: %f Hz\n", real_rate);
if (dev->tuner && dev->tuner->set_bw)
if (dev->tuner && dev->tuner->set_bw) {
rtlsdr_set_i2c_repeater(dev, 1);
dev->tuner->set_bw(dev, real_rate);
rtlsdr_set_i2c_repeater(dev, 0);
}
dev->rate = samp_rate;
@ -1005,7 +1000,7 @@ static int _rtlsdr_alloc_async_buffers(rtlsdr_dev_t *dev)
if (!dev->xfer_buf) {
dev->xfer_buf = malloc(dev->xfer_buf_num *
sizeof(unsigned char *));
sizeof(unsigned char *));
for(i = 0; i < dev->xfer_buf_num; ++i)
dev->xfer_buf[i] = malloc(dev->xfer_buf_len);
@ -1046,7 +1041,7 @@ static int _rtlsdr_free_async_buffers(rtlsdr_dev_t *dev)
}
int rtlsdr_read_async(rtlsdr_dev_t *dev, rtlsdr_read_async_cb_t cb, void *ctx,
uint32_t buf_num, uint32_t buf_len)
uint32_t buf_num, uint32_t buf_len)
{
unsigned int i;
int r;