int rtlsdr_open2(rtlsdr_dev_t **out_dev, int fd, const char * devicePath)
{
int r;
rtlsdr_dev_t *dev = NULL;
libusb_device *device = NULL;
uint8_t reg;
dev = malloc(sizeof(rtlsdr_dev_t));
if (NULL == dev)
return -ENOMEM;
memset(dev, 0, sizeof(rtlsdr_dev_t));
memcpy(dev->fir, fir_default, sizeof(fir_default));
int status = libusb_init(&dev->ctx);
if (status != LIBUSB_SUCCESS)
return status;
else if (dev->ctx == NULL)
return LIBUSB_ERROR_OTHER;
dev->dev_lost = 1;
device = libusb_get_device2(dev->ctx, devicePath);
if (!device) {
r = -1;
goto err;
}
r = libusb_open2(device, &dev->devh, fd);
if (libusb_kernel_driver_active(dev->devh, 0) == 1) {
dev->driver_active = 1;
#ifdef DETACH_KERNEL_DRIVER
if (!libusb_detach_kernel_driver(dev->devh, 0)) {
fprintf(stderr, "Detached kernel driver\n");
} else {
fprintf(stderr, "Detaching kernel driver failed!");
goto err;
}
#else
LOGI("ERROR: \nKernel driver is active, or device is "
"claimed by second instance of librtlsdr."
"\nIn the first case, please either detach"
" or blacklist the kernel module\n"
"(dvb_usb_rtl28xxu), or enable automatic"
" detaching at compile time.\n\n");
#endif
}
r = libusb_claim_interface(dev->devh, 0);
if (r < 0) {
LOGI("ERROR: usb_claim_interface error %d\n", r);
goto err;
}
dev->rtl_xtal = DEF_RTL_XTAL_FREQ;
/* perform a dummy write, if it fails, reset the device */
if (rtlsdr_write_reg(dev, USBB, USB_SYSCTL, 0x09, 1) < 0) {
LOGI("ERROR: Resetting device...\n");
libusb_reset_device(dev->devh);
}
rtlsdr_init_baseband(dev);
dev->dev_lost = 0;
/* Probe tuners */
rtlsdr_set_i2c_repeater(dev, 1);
reg = rtlsdr_i2c_read_reg(dev, E4K_I2C_ADDR, E4K_CHECK_ADDR);
if (reg == E4K_CHECK_VAL) {
LOGI("ERROR: Found Elonics E4000 tuner\n");
dev->tuner_type = RTLSDR_TUNER_E4000;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, FC0013_I2C_ADDR, FC0013_CHECK_ADDR);
if (reg == FC0013_CHECK_VAL) {
LOGI("ERROR: Found Fitipower FC0013 tuner\n");
dev->tuner_type = RTLSDR_TUNER_FC0013;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, R820T_I2C_ADDR, R82XX_CHECK_ADDR);
if (reg == R82XX_CHECK_VAL) {
LOGI("ERROR: Found Rafael Micro R820T tuner\n");
dev->tuner_type = RTLSDR_TUNER_R820T;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, R828D_I2C_ADDR, R82XX_CHECK_ADDR);
if (reg == R82XX_CHECK_VAL) {
LOGI("ERROR: Found Rafael Micro R828D tuner\n");
dev->tuner_type = RTLSDR_TUNER_R828D;
goto found;
}
/* initialise GPIOs */
rtlsdr_set_gpio_output(dev, 5);
/* reset tuner before probing */
rtlsdr_set_gpio_bit(dev, 5, 1);
rtlsdr_set_gpio_bit(dev, 5, 0);
reg = rtlsdr_i2c_read_reg(dev, FC2580_I2C_ADDR, FC2580_CHECK_ADDR);
if ((reg & 0x7f) == FC2580_CHECK_VAL) {
LOGI("ERROR: Found FCI 2580 tuner\n");
dev->tuner_type = RTLSDR_TUNER_FC2580;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, FC0012_I2C_ADDR, FC0012_CHECK_ADDR);
if (reg == FC0012_CHECK_VAL) {
LOGI("ERROR: Found Fitipower FC0012 tuner\n");
rtlsdr_set_gpio_output(dev, 6);
dev->tuner_type = RTLSDR_TUNER_FC0012;
goto found;
}
found:
/* use the rtl clock value by default */
dev->tun_xtal = dev->rtl_xtal;
dev->tuner = &tuners[dev->tuner_type];
switch (dev->tuner_type) {
case RTLSDR_TUNER_R828D:
dev->tun_xtal = R828D_XTAL_FREQ;
case RTLSDR_TUNER_R820T:
/* disable Zero-IF mode */
rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
/* only enable In-phase ADC input */
rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
/* the R82XX use 3.57 MHz IF for the DVB-T 6 MHz mode, and
* 4.57 MHz for the 8 MHz mode */
rtlsdr_set_if_freq(dev, R82XX_IF_FREQ);
/* enable spectrum inversion */
rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
break;
case RTLSDR_TUNER_UNKNOWN:
LOGI("ERROR: No supported tuner found\n");
rtlsdr_set_direct_sampling(dev, 1);
break;
default:
break;
}
if (dev->tuner->init)
r = dev->tuner->init(dev);
rtlsdr_set_i2c_repeater(dev, 0);
*out_dev = dev;
return 0;
err:
if (dev) {
if (dev->ctx)
libusb_exit(dev->ctx);
free(dev);
}
return r;
}
int rtlsdr_open2(rtlsdr_dev_t **out_dev, uint32_t index, int fd)
{
int r;
int i;
libusb_device **list;
rtlsdr_dev_t *dev = NULL;
libusb_device *device = NULL;
uint32_t device_count = 0;
struct libusb_device_descriptor dd;
uint8_t reg;
ssize_t cnt;
dev = malloc(sizeof(rtlsdr_dev_t));
if (NULL == dev)
return -ENOMEM;
memset(dev, 0, sizeof(rtlsdr_dev_t));
libusb_init(&dev->ctx);
cnt = libusb_get_device_list(dev->ctx, &list);
for (i = 0; i < cnt; i++) {
device = list[i];
libusb_get_device_descriptor(list[i], &dd);
if (find_known_device(dd.idVendor, dd.idProduct)) {
device_count++;
}
if (index == device_count - 1)
break;
device = NULL;
}
if (!device) {
r = -1;
goto err;
}
r = libusb_open2(device, &dev->devh, fd);
if (r < 0) {
libusb_free_device_list(list, 1);
fprintf(stderr, "usb_open error %d\n", r);
goto err;
}
libusb_free_device_list(list, 1);
r = libusb_claim_interface(dev->devh, 0);
if (r < 0) {
fprintf(stderr, "usb_claim_interface error %d\n", r);
goto err;
}
dev->rtl_xtal = DEF_RTL_XTAL_FREQ;
rtlsdr_init_baseband(dev);
/* Probe tuners */
rtlsdr_set_i2c_repeater(dev, 1);
reg = rtlsdr_i2c_read_reg(dev, E4K_I2C_ADDR, E4K_CHECK_ADDR);
if (reg == E4K_CHECK_VAL) {
fprintf(stderr, "Found Elonics E4000 tuner\n");
dev->tuner_type = RTLSDR_TUNER_E4000;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, FC0013_I2C_ADDR, FC0013_CHECK_ADDR);
if (reg == FC0013_CHECK_VAL) {
fprintf(stderr, "Found Fitipower FC0013 tuner\n");
dev->tuner_type = RTLSDR_TUNER_FC0013;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, R820T_I2C_ADDR, R820T_CHECK_ADDR);
if (reg == R820T_CHECK_VAL) {
fprintf(stderr, "Found Rafael Micro R820T tuner\n");
dev->tuner_type = RTLSDR_TUNER_R820T;
/* disable Zero-IF mode */
rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1a, 1);
/* only enable In-phase ADC input */
rtlsdr_demod_write_reg(dev, 0, 0x08, 0x4d, 1);
/* the R820T uses 3.57 MHz IF for the DVB-T 6 MHz mode, and
* 4.57 MHz for the 8 MHz mode */
rtlsdr_set_if_freq(dev, R820T_IF_FREQ);
/* enable spectrum inversion */
rtlsdr_demod_write_reg(dev, 1, 0x15, 0x01, 1);
goto found;
}
/* initialise GPIOs */
rtlsdr_set_gpio_output(dev, 5);
/* reset tuner before probing */
rtlsdr_set_gpio_bit(dev, 5, 1);
rtlsdr_set_gpio_bit(dev, 5, 0);
reg = rtlsdr_i2c_read_reg(dev, FC2580_I2C_ADDR, FC2580_CHECK_ADDR);
if ((reg & 0x7f) == FC2580_CHECK_VAL) {
fprintf(stderr, "Found FCI 2580 tuner\n");
dev->tuner_type = RTLSDR_TUNER_FC2580;
goto found;
}
reg = rtlsdr_i2c_read_reg(dev, FC0012_I2C_ADDR, FC0012_CHECK_ADDR);
if (reg == FC0012_CHECK_VAL) {
fprintf(stderr, "Found Fitipower FC0012 tuner\n");
rtlsdr_set_gpio_output(dev, 6);
dev->tuner_type = RTLSDR_TUNER_FC0012;
goto found;
}
found:
if (dev->tuner_type == RTLSDR_TUNER_UNKNOWN) {
fprintf(stderr, "No supported tuner found\n");
rtlsdr_set_direct_sampling(dev, 1);
}
dev->tuner = &tuners[dev->tuner_type];
dev->tun_xtal = dev->rtl_xtal; /* use the rtl clock value by default */
if (dev->tuner->init)
r = dev->tuner->init(dev);
rtlsdr_set_i2c_repeater(dev, 0);
*out_dev = dev;
return 0;
err:
if (dev) {
if (dev->ctx)
libusb_exit(dev->ctx);
free(dev);
}
return r;
}
