Dimitri Stolnikov
13 years ago
parent
40669a5a0a
commit
d8da91cbc2
@ -1,7 +1,9 @@ |
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#ifndef __I2C_H |
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#define __I2C_H |
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int rtl_i2c_write(uint8_t i2c_addr, uint8_t *buffer, int len); |
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int rtl_i2c_read(uint8_t i2c_addr, uint8_t *buffer, int len); |
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typedef int rtlsdr_dev_t; |
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int rtlsdr_i2c_write(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len); |
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int rtlsdr_i2c_read(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len); |
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#endif |
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@ -0,0 +1,539 @@ |
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/*
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* rtl-sdr, a poor man's SDR using a Realtek RTL2832 based DVB-stick |
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* Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 2 of the License, or |
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*(at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include <errno.h> |
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#include <signal.h> |
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#include <string.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <unistd.h> |
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#include <libusb.h> |
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#include "tuner_e4000.h" |
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#include "tuner_fc0013.h" |
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/* generic tuner interface functions, shall be moved to the tuner implementations */ |
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int e4k_init(void *dev) { return e4000_Initialize(dev); } |
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int e4k_exit(void *dev) { return 0; } |
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int e4k_tune(void *dev, int freq) { return e4000_SetRfFreqHz(dev, freq); } |
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int e4k_set_bw(void *dev, int bw) { return e4000_SetBandwidthHz(dev, 8000000); } |
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int fc0012_init(void *dev) { return 0; } |
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int fc0012_exit(void *dev) { return 0; } |
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int fc0012_tune(void *dev, int freq) { return 0; } |
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int fc0012_set_bw(void *dev, int bw) { return 0; } |
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int fc0013_init(void *dev) { return FC0013_Open(dev); } |
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int fc0013_exit(void *dev) { return 0; } |
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int fc0013_tune(void *dev, int freq) { |
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/* read bandwidth mode to reapply it */ |
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int bw = 0; |
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//fc0013_GetBandwidthMode(dev, &bw); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, bw & 0xff); |
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} |
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int fc0013_set_bw(void *dev, int bw) { |
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/* read frequency to reapply it */ |
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unsigned long freq = 0; |
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//fc0013_GetRfFreqHz(dev, &freq); // FIXME: missing
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return FC0013_SetFrequency(dev, freq/1000, 8); |
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} |
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enum rtlsdr_tuners { |
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RTLSDR_TUNER_UNDEF, |
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RTLSDR_TUNER_E4000, |
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RTLSDR_TUNER_FC0012, |
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RTLSDR_TUNER_FC0013 |
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}; |
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typedef struct rtlsdr_tuner { |
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enum rtlsdr_tuners tuner; |
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int(*init)(void *); |
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int(*exit)(void *); |
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int(*tune)(void *, int freq /* Hz */); |
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int(*set_bw)(void *, int bw /* Hz */); |
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int freq; /* Hz */ |
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int corr; /* ppm */ |
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} rtlsdr_tuner_t; |
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rtlsdr_tuner_t tuners[] = { |
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{ RTLSDR_TUNER_E4000, e4k_init, e4k_exit, e4k_tune, e4k_set_bw, 0, 0 }, |
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{ RTLSDR_TUNER_FC0012, fc0012_init, fc0012_exit, fc0012_tune, fc0012_set_bw, 0, 0 }, |
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{ RTLSDR_TUNER_FC0013, fc0013_init, fc0013_exit, fc0013_tune, fc0013_set_bw, 0, 0 }, |
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}; |
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struct rtlsdr_device { |
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uint16_t vid; |
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uint16_t pid; |
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} devices[] = { |
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{ 0x0bda, 0x2832, /*RTLSDR_TUNER_E4000,*/ }, /* default RTL2832U vid/pid (eg. hama nano) */ |
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{ 0x0bda, 0x2838, /*RTLSDR_TUNER_E4000,*/ }, /* ezcap USB 2.0 DVB-T/DAB/FM stick */ |
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{ 0x0ccd, 0x00b3, /*RTLSDR_TUNER_FC0013,*/ }, /* Terratec NOXON DAB/DAB+ USB-Stick */ |
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{ 0x1f4d, 0xb803, /*RTLSDR_TUNER_FC0012,*/ }, /* GTek T803 */ |
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{ 0x1b80, 0xd3a4, /*RTLSDR_TUNER_FC0013,*/ }, /* Twintech UT-40 */ |
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}; |
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typedef struct { |
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struct libusb_device_handle *devh; |
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rtlsdr_tuner_t *tuner; |
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} rtlsdr_dev_t; |
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#define CRYSTAL_FREQ 28800000 |
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#define CTRL_IN (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_IN) |
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#define CTRL_OUT (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT) |
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enum usb_reg { |
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USB_SYSCTL = 0x2000, |
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USB_CTRL = 0x2010, |
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USB_STAT = 0x2014, |
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USB_EPA_CFG = 0x2144, |
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USB_EPA_CTL = 0x2148, |
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USB_EPA_MAXPKT = 0x2158, |
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USB_EPA_MAXPKT_2 = 0x215a, |
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USB_EPA_FIFO_CFG = 0x2160, |
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}; |
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enum sys_reg { |
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DEMOD_CTL = 0x3000, |
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GPO = 0x3001, |
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GPI = 0x3002, |
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GPOE = 0x3003, |
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GPD = 0x3004, |
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SYSINTE = 0x3005, |
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SYSINTS = 0x3006, |
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GP_CFG0 = 0x3007, |
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GP_CFG1 = 0x3008, |
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SYSINTE_1 = 0x3009, |
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SYSINTS_1 = 0x300a, |
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DEMOD_CTL_1 = 0x300b, |
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IR_SUSPEND = 0x300c, |
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}; |
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enum blocks { |
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DEMODB = 0, |
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USBB = 1, |
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SYSB = 2, |
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TUNB = 3, |
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ROMB = 4, |
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IRB = 5, |
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IICB = 6, |
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}; |
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int rtlsdr_read_array(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t *array, uint8_t len) |
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{ |
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int r; |
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uint16_t index = (block << 8); |
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r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, array, len, 0); |
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return r; |
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} |
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int rtlsdr_write_array(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t *array, uint8_t len) |
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{ |
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int r; |
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uint16_t index = (block << 8) | 0x10; |
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r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, array, len, 0); |
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return r; |
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} |
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int rtlsdr_i2c_write(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len) |
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{ |
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uint16_t addr = i2c_addr; |
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return rtlsdr_write_array(dev, IICB, addr, buffer, len); |
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} |
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int rtlsdr_i2c_read(rtlsdr_dev_t *dev, uint8_t i2c_addr, uint8_t *buffer, int len) |
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{ |
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uint16_t addr = i2c_addr; |
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return rtlsdr_read_array(dev, IICB, addr, buffer, len); |
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} |
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uint16_t rtlsdr_read_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint8_t len) |
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{ |
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int r; |
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unsigned char data[2]; |
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uint16_t index = (block << 8); |
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uint16_t reg; |
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r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, 0); |
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if (r < 0) |
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printf("%s failed\n", __FUNCTION__); |
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reg = (data[1] << 8) | data[0]; |
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return reg; |
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} |
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void rtlsdr_write_reg(rtlsdr_dev_t *dev, uint8_t block, uint16_t addr, uint16_t val, uint8_t len) |
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{ |
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int r; |
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unsigned char data[2]; |
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uint16_t index = (block << 8) | 0x10; |
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if (len == 1) |
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data[0] = val & 0xff; |
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else |
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data[0] = val >> 8; |
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data[1] = val & 0xff; |
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r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, 0); |
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if (r < 0) |
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printf("%s failed\n", __FUNCTION__); |
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} |
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uint16_t rtlsdr_demod_read_reg(rtlsdr_dev_t *dev, uint8_t page, uint8_t addr, uint8_t len) |
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{ |
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int r; |
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unsigned char data[2]; |
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uint16_t index = page; |
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uint16_t reg; |
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addr = (addr << 8) | 0x20; |
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r = libusb_control_transfer(dev->devh, CTRL_IN, 0, addr, index, data, len, 0); |
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if (r < 0) |
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printf("%s failed\n", __FUNCTION__); |
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reg = (data[1] << 8) | data[0]; |
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return reg; |
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} |
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void rtlsdr_demod_write_reg(rtlsdr_dev_t *dev, uint8_t page, uint16_t addr, uint16_t val, uint8_t len) |
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{ |
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int r; |
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unsigned char data[2]; |
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uint16_t index = 0x10 | page; |
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addr = (addr << 8) | 0x20; |
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if (len == 1) |
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data[0] = val & 0xff; |
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else |
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data[0] = val >> 8; |
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data[1] = val & 0xff; |
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r = libusb_control_transfer(dev->devh, CTRL_OUT, 0, addr, index, data, len, 0); |
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if (r < 0) |
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printf("%s failed\n", __FUNCTION__); |
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rtlsdr_demod_read_reg(dev, 0x0a, 0x01, 1); |
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} |
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void rtlsdr_set_i2c_repeater(rtlsdr_dev_t *dev, int on) |
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{ |
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rtlsdr_demod_write_reg(dev, 1, 0x01, on ? 0x18 : 0x10, 1); |
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} |
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void rtlsdr_init_baseband(rtlsdr_dev_t *dev) |
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{ |
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unsigned int i; |
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/* default FIR coefficients used for DAB/FM by the Windows driver,
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* the DVB driver uses different ones */ |
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uint8_t fir_coeff[] = { |
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0xca, 0xdc, 0xd7, 0xd8, 0xe0, 0xf2, 0x0e, 0x35, 0x06, 0x50, |
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0x9c, 0x0d, 0x71, 0x11, 0x14, 0x71, 0x74, 0x19, 0x41, 0x00, |
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}; |
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/* initialize USB */ |
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rtlsdr_write_reg(dev, USBB, USB_SYSCTL, 0x09, 1); |
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rtlsdr_write_reg(dev, USBB, USB_EPA_MAXPKT, 0x0002, 2); |
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rtlsdr_write_reg(dev, USBB, USB_EPA_CTL, 0x1002, 2); |
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/* poweron demod */ |
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rtlsdr_write_reg(dev, SYSB, DEMOD_CTL_1, 0x22, 1); |
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rtlsdr_write_reg(dev, SYSB, DEMOD_CTL, 0xe8, 1); |
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/* reset demod (bit 3, soft_rst) */ |
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rtlsdr_demod_write_reg(dev, 1, 0x01, 0x14, 1); |
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rtlsdr_demod_write_reg(dev, 1, 0x01, 0x10, 1); |
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/* disable spectrum inversion and adjacent channel rejection */ |
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rtlsdr_demod_write_reg(dev, 1, 0x15, 0x00, 1); |
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rtlsdr_demod_write_reg(dev, 1, 0x16, 0x0000, 2); |
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/* set IF-frequency to 0 Hz */ |
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rtlsdr_demod_write_reg(dev, 1, 0x19, 0x0000, 2); |
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/* set FIR coefficients */ |
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for (i = 0; i < sizeof (fir_coeff); i++) |
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rtlsdr_demod_write_reg(dev, 1, 0x1c + i, fir_coeff[i], 1); |
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rtlsdr_demod_write_reg(dev, 0, 0x19, 0x25, 1); |
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/* init FSM state-holding register */ |
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rtlsdr_demod_write_reg(dev, 1, 0x93, 0xf0, 1); |
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/* disable AGC (en_dagc, bit 0) */ |
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rtlsdr_demod_write_reg(dev, 1, 0x11, 0x00, 1); |
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/* disable PID filter (enable_PID = 0) */ |
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rtlsdr_demod_write_reg(dev, 0, 0x61, 0x60, 1); |
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/* opt_adc_iq = 0, default ADC_I/ADC_Q datapath */ |
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rtlsdr_demod_write_reg(dev, 0, 0x06, 0x80, 1); |
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/* Enable Zero-IF mode (en_bbin bit), DC cancellation (en_dc_est),
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* IQ estimation/compensation (en_iq_comp, en_iq_est) */ |
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rtlsdr_demod_write_reg(dev, 1, 0xb1, 0x1b, 1); |
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} |
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int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq) |
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{ |
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rtlsdr_set_i2c_repeater(dev, 1); |
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if (dev->tuner) { |
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dev->tuner->freq = freq; |
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double f = (double) freq; |
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f *= 1.0 + dev->tuner->corr / 1e6; |
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dev->tuner->tune((void *)dev, (int) f); |
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printf("Tuned to %i Hz\n", freq); |
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} |
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rtlsdr_set_i2c_repeater(dev, 0); |
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return 0; |
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} |
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int rtlsdr_get_center_freq(rtlsdr_dev_t *dev) |
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{ |
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return 0; // TODO: implement
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} |
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int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm) |
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{ |
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if (dev->tuner) { |
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if (dev->tuner->corr == ppm) |
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return -1; |
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dev->tuner->corr = ppm; |
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/* retune to apply new correction value */ |
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rtlsdr_set_center_freq(dev, dev->tuner->freq); |
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} |
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return 0; |
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} |
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int32_t rtlsdr_get_freq_correction(rtlsdr_dev_t *dev) |
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{ |
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if (dev->tuner) |
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return dev->tuner->corr; |
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else |
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return 0; |
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} |
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void rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate) |
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{ |
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uint16_t tmp; |
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uint32_t rsamp_ratio; |
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double real_rate; |
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/* check for the maximum rate the resampler supports */ |
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if (samp_rate > 3200000) |
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samp_rate = 3200000; |
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rsamp_ratio = (CRYSTAL_FREQ * pow(2, 22)) / samp_rate; |
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rsamp_ratio &= ~3; |
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real_rate = (CRYSTAL_FREQ * pow(2, 22)) / rsamp_ratio; |
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printf("Setting sample rate: %.3f Hz\n", real_rate); |
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if (dev->tuner) |
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dev->tuner->set_bw((void *)dev, real_rate); |
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tmp = (rsamp_ratio >> 16); |
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rtlsdr_demod_write_reg(dev, 1, 0x9f, tmp, 2); |
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tmp = rsamp_ratio & 0xffff; |
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rtlsdr_demod_write_reg(dev, 1, 0xa1, tmp, 2); |
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} |
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int rtlsdr_get_sample_rate(rtlsdr_dev_t *dev) |
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{ |
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return 0; // TODO: implement
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} |
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int rtlsdr_init(void) |
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{ |
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return libusb_init(NULL); |
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} |
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void rtlsdr_exit(void) |
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{ |
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libusb_exit(NULL); |
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} |
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uint32_t rtlsdr_get_device_count(void) |
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{ |
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int i, j; |
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libusb_device **list; |
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uint32_t device_count; |
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struct libusb_device_descriptor dd; |
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ssize_t cnt = libusb_get_device_list(NULL, &list); |
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for (i = 0; i < cnt; i++) { |
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libusb_get_device_descriptor(list[i], &dd); |
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) { |
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if ( devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct ) { |
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device_count++; |
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} |
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} |
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} |
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libusb_free_device_list(list, 0); |
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return device_count; |
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} |
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const char *rtlsdr_get_device_name(uint32_t index) |
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{ |
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libusb_device **list; |
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ssize_t cnt = libusb_get_device_list(NULL, &list); |
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if (index > cnt - 1) |
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return NULL; |
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/*libusb_device *device = list[index];*/ |
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libusb_free_device_list(list, 0); |
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return "TODO: implement"; |
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} |
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rtlsdr_dev_t *rtlsdr_open(int index) |
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{ |
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int r; |
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int i, j; |
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libusb_device **list; |
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rtlsdr_dev_t * dev = NULL; |
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libusb_device *device = NULL; |
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uint32_t device_count = 0; |
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struct libusb_device_descriptor dd; |
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dev = malloc(sizeof(rtlsdr_dev_t)); |
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memset(dev, 0, sizeof(rtlsdr_dev_t)); |
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ssize_t cnt = libusb_get_device_list(NULL, &list); |
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for (i = 0; i < cnt; i++) { |
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device = list[i]; |
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libusb_get_device_descriptor(list[i], &dd); |
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for (j = 0; j < sizeof(devices)/sizeof(struct rtlsdr_device); j++ ) { |
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if ( devices[j].vid == dd.idVendor && devices[j].pid == dd.idProduct ) { |
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device_count++; |
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if (index == device_count - 1) |
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break; |
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} |
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} |
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if (index == device_count - 1) |
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break; |
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device = NULL; |
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} |
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if (!device) |
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goto err; |
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r = libusb_open(device, &dev->devh); |
||||
if (r < 0) { |
||||
libusb_free_device_list(list, 0); |
||||
fprintf(stderr, "usb_open error %d\n", r); |
||||
goto err; |
||||
} |
||||
|
||||
libusb_free_device_list(list, 0); |
||||
|
||||
unsigned char buffer[256]; |
||||
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 0, buffer, sizeof(buffer) ); |
||||
printf("sn#: %s\n", buffer); |
||||
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 1, buffer, sizeof(buffer) ); |
||||
printf("manufacturer: %s\n", buffer); |
||||
|
||||
libusb_get_string_descriptor_ascii(dev->devh, 2, buffer, sizeof(buffer) ); |
||||
printf("product: %s\n", buffer); |
||||
|
||||
r = libusb_claim_interface(dev->devh, 0); |
||||
if (r < 0) { |
||||
fprintf(stderr, "usb_claim_interface error %d\n", r); |
||||
goto err; |
||||
} |
||||
|
||||
rtlsdr_init_baseband(dev); |
||||
|
||||
// TODO: probe the tuner and set dev->tuner member to appropriate tuner object
|
||||
// dev->tuner = &tuners[...];
|
||||
|
||||
return dev; |
||||
err: |
||||
return NULL; |
||||
} |
||||
|
||||
int rtlsdr_close(rtlsdr_dev_t *dev) |
||||
{ |
||||
libusb_release_interface(dev->devh, 0); |
||||
|
||||
libusb_close(dev->devh); |
||||
|
||||
free(dev); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
int rtlsdr_reset_buffer(rtlsdr_dev_t *dev) |
||||
{ |
||||
return 0; // TODO: implement
|
||||
} |
||||
|
||||
int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, int len, int *n_read) |
||||
{ |
||||
return libusb_bulk_transfer(dev->devh, 0x81, buf, len, n_read, 3000); |
||||
} |
||||
#if 0 |
||||
int rtlsdr_async_loop(rtlsdr_dev_t *dev, rtlsdr_async_read_cb_t cb, void *ctx) |
||||
{ |
||||
return 0; |
||||
} |
||||
#endif |
||||
@ -0,0 +1,73 @@ |
||||
/*
|
||||
* rtl-sdr, a poor man's SDR using a Realtek RTL2832 based DVB-stick |
||||
* Copyright (C) 2012 by Steve Markgraf <steve@steve-m.de> |
||||
* |
||||
* This program is free software: you can redistribute it and/or modify |
||||
* it under the terms of the GNU General Public License as published by |
||||
* the Free Software Foundation, either version 2 of the License, or |
||||
*(at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#ifndef __RTL_SDR_H |
||||
#define __RTL_SDR_H |
||||
|
||||
#ifdef __cplusplus |
||||
extern "C" { |
||||
#endif |
||||
|
||||
#include <stdint.h> |
||||
|
||||
typedef int rtlsdr_dev_t; |
||||
|
||||
/* must be called once before using any other library functions */ |
||||
int rtlsdr_init(void); |
||||
|
||||
/* must be called once at application shutdown */ |
||||
void rtlsdr_exit(void); |
||||
|
||||
uint32_t rtlsdr_get_device_count(void); |
||||
|
||||
const char *rtlsdr_get_device_name(uint32_t index); |
||||
|
||||
rtlsdr_dev_t *rtlsdr_open(uint32_t index); |
||||
|
||||
int rtlsdr_close(rtlsdr_dev_t *dev); |
||||
|
||||
/* configuration functions */ |
||||
|
||||
int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq); |
||||
|
||||
int rtlsdr_get_center_freq(rtlsdr_dev_t *dev); |
||||
|
||||
int rtlsdr_set_freq_correction(rtlsdr_dev_t *dev, int32_t ppm); |
||||
|
||||
int32_t rtlsdr_get_freq_correction(rtlsdr_dev_t *dev); |
||||
|
||||
/* this will select the baseband filters according to the requested sample rate */ |
||||
int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t rate); |
||||
|
||||
int rtlsdr_get_sample_rate(rtlsdr_dev_t *dev); |
||||
|
||||
/* streaming functions */ |
||||
|
||||
int rtlsdr_reset_buffer(rtlsdr_dev_t *dev); |
||||
|
||||
int rtlsdr_read_sync(rtlsdr_dev_t *dev, void *buf, uint32_t len, uint32_t *n_read); |
||||
|
||||
typedef void(*rtlsdr_async_read_cb_t)(const char *buf, uint32_t len, void *ctx); |
||||
|
||||
int rtlsdr_async_loop(rtlsdr_dev_t *dev, rtlsdr_async_read_cb_t cb, void *ctx); |
||||
|
||||
#ifdef __cplusplus |
||||
} |
||||
#endif |
||||
|
||||
#endif /* __RTL_SDR_H */ |
||||
Loading…
Reference in new issue