kopia lustrzana https://github.com/keenerd/rtl-sdr
lib: cache i2c repeater (tejeez)
Kyle Keen
rodzic
f2de679411
commit
063d54c26d
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@ -125,6 +125,7 @@ struct rtlsdr_dev {
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int driver_active;
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unsigned int xfer_errors;
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int tuner_initialized;
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int i2c_repeater_on;
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};
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void rtlsdr_set_gpio_bit(rtlsdr_dev_t *dev, uint8_t gpio, int val);
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@ -573,6 +574,10 @@ void rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio)
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void rtlsdr_set_i2c_repeater(rtlsdr_dev_t *dev, int on)
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{
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if (on == dev->i2c_repeater_on)
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return;
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on = !!on; /* values +2 to force on */
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dev->i2c_repeater_on = on;
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rtlsdr_demod_write_reg(dev, 1, 0x01, on ? 0x18 : 0x10, 1);
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}
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@ -670,6 +675,8 @@ int rtlsdr_deinit_baseband(rtlsdr_dev_t *dev)
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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if (dev->tuner && dev->tuner->exit) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->exit(dev); /* deinitialize tuner */
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@ -692,6 +699,7 @@ int rtlsdr_set_if_freq(rtlsdr_dev_t *dev, uint32_t freq)
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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/* read corrected clock value */
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if (rtlsdr_get_xtal_freq(dev, &rtl_xtal, NULL))
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@ -712,7 +720,6 @@ int rtlsdr_set_if_freq(rtlsdr_dev_t *dev, uint32_t freq)
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if(dev->tuner_initialized && dev->tuner && dev->tuner->set_if_freq) {
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rtlsdr_set_i2c_repeater(dev, 1);
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dev->tuner->set_if_freq(dev, freq);
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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return r;
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}
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@ -722,6 +729,7 @@ int rtlsdr_set_sample_freq_correction(rtlsdr_dev_t *dev, int ppm)
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int r = 0;
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uint8_t tmp;
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int16_t offs = ppm * (-1) * TWO_POW(24) / 1000000;
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rtlsdr_set_i2c_repeater(dev, 0);
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tmp = offs & 0xff;
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r |= rtlsdr_demod_write_reg(dev, 1, 0x3f, tmp, 1);
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@ -734,6 +742,7 @@ int rtlsdr_set_sample_freq_correction(rtlsdr_dev_t *dev, int ppm)
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int rtlsdr_set_xtal_freq(rtlsdr_dev_t *dev, uint32_t rtl_freq, uint32_t tuner_freq)
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{
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int r = 0;
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rtlsdr_set_i2c_repeater(dev, 0);
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if (!dev)
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return -1;
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@ -831,6 +840,7 @@ int rtlsdr_write_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16
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int r = 0;
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int i;
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uint8_t cmd[2];
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rtlsdr_set_i2c_repeater(dev, 0);
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if (!dev)
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return -1;
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@ -868,6 +878,7 @@ int rtlsdr_read_eeprom(rtlsdr_dev_t *dev, uint8_t *data, uint8_t offset, uint16_
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{
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int r = 0;
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int i;
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rtlsdr_set_i2c_repeater(dev, 0);
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if (!dev)
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return -1;
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@ -897,11 +908,11 @@ int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
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return -1;
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if (dev->direct_sampling) {
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rtlsdr_set_i2c_repeater(dev, 0);
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r = rtlsdr_set_if_freq(dev, freq);
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} else if (dev->tuner && dev->tuner->set_freq) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->set_freq(dev, freq - dev->offs_freq);
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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if (!r)
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@ -923,6 +934,7 @@ uint32_t rtlsdr_get_center_freq(rtlsdr_dev_t *dev)
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int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int ppm)
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{
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int r = 0;
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rtlsdr_set_i2c_repeater(dev, 0);
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if (!dev)
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return -1;
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@ -1025,7 +1037,6 @@ int rtlsdr_set_tuner_gain(rtlsdr_dev_t *dev, int gain)
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if (dev->tuner->set_gain) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->set_gain((void *)dev, gain);
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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if (!r)
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@ -1054,7 +1065,6 @@ int rtlsdr_set_tuner_if_gain(rtlsdr_dev_t *dev, int stage, int gain)
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if (dev->tuner->set_if_gain) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->set_if_gain(dev, stage, gain);
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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return r;
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@ -1070,7 +1080,6 @@ int rtlsdr_set_tuner_gain_mode(rtlsdr_dev_t *dev, int mode)
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if (dev->tuner->set_gain_mode) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->set_gain_mode((void *)dev, mode);
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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return r;
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@ -1085,6 +1094,7 @@ int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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/* check if the rate is supported by the resampler */
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if ((samp_rate <= 225000) || (samp_rate > 3200000) ||
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@ -1140,6 +1150,7 @@ int rtlsdr_set_testmode(rtlsdr_dev_t *dev, int on)
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{
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x03 : 0x05, 1);
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}
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@ -1148,6 +1159,7 @@ int rtlsdr_set_agc_mode(rtlsdr_dev_t *dev, int on)
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{
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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return rtlsdr_demod_write_reg(dev, 0, 0x19, on ? 0x25 : 0x05, 1);
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}
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@ -1189,6 +1201,7 @@ int rtlsdr_set_direct_sampling(rtlsdr_dev_t *dev, int on)
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rtlsdr_set_i2c_repeater(dev, 0);
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}
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}
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rtlsdr_set_i2c_repeater(dev, 0);
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/* common to all direct modes */
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if (on) {
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@ -1256,6 +1269,7 @@ int rtlsdr_get_direct_sampling(rtlsdr_dev_t *dev)
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int rtlsdr_set_offset_tuning(rtlsdr_dev_t *dev, int on)
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{
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int r = 0;
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rtlsdr_set_i2c_repeater(dev, 0);
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if (!dev)
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return -1;
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@ -1624,6 +1638,7 @@ found:
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}
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if (dev->tuner->init) {
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rtlsdr_set_i2c_repeater(dev, 1);
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r = dev->tuner->init(dev);
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dev->tuner_initialized = 1;
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}
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@ -1648,6 +1663,7 @@ int rtlsdr_close(rtlsdr_dev_t *dev)
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{
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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if(!dev->dev_lost) {
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/* block until all async operations have been completed (if any) */
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@ -1686,6 +1702,7 @@ int rtlsdr_reset_buffer(rtlsdr_dev_t *dev)
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{
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if (!dev)
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return -1;
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rtlsdr_set_i2c_repeater(dev, 0);
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rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x1002, 2);
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rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x0000, 2);
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