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; }