Software to turn the RTL2832U into a SDR receiver
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
rtl-sdr/src/rtl_eeprom.c

426 lines
10 KiB

/*
* rtl-sdr, turns your Realtek RTL2832 based DVB dongle into a SDR receiver
* rtl_eeprom, EEPROM modification tool
* 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/>.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#else
#include <windows.h>
#include "getopt/getopt.h"
#endif
#include "rtl-sdr.h"
#define EEPROM_SIZE 256
#define MAX_STR_SIZE 256
#define STR_OFFSET 0x09
static rtlsdr_dev_t *dev = NULL;
typedef struct rtlsdr_config {
uint16_t vendor_id;
uint16_t product_id;
char manufacturer[MAX_STR_SIZE];
char product[MAX_STR_SIZE];
char serial[MAX_STR_SIZE];
int have_serial;
int enable_ir;
int remote_wakeup;
} rtlsdr_config_t;
void dump_config(rtlsdr_config_t *conf)
{
fprintf(stderr, "__________________________________________\n");
fprintf(stderr, "Vendor ID:\t\t0x%04x\n", conf->vendor_id);
fprintf(stderr, "Product ID:\t\t0x%04x\n", conf->product_id);
fprintf(stderr, "Manufacturer:\t\t%s\n", conf->manufacturer);
fprintf(stderr, "Product:\t\t%s\n", conf->product);
fprintf(stderr, "Serial number:\t\t%s\n", conf->serial);
fprintf(stderr, "Serial number enabled:\t");
fprintf(stderr, conf->have_serial ? "yes\n": "no\n");
fprintf(stderr, "IR endpoint enabled:\t");
fprintf(stderr, conf->enable_ir ? "yes\n": "no\n");
fprintf(stderr, "Remote wakeup enabled:\t");
fprintf(stderr, conf->remote_wakeup ? "yes\n": "no\n");
fprintf(stderr, "__________________________________________\n");
}
void usage(void)
{
fprintf(stderr,
"rtl_eeprom, an EEPROM programming tool for "
"RTL2832 based DVB-T receivers\n\n"
"Usage:\n"
"\t[-d device_index (default: 0)]\n"
"\t[-m <str> set manufacturer string]\n"
"\t[-p <str> set product string]\n"
"\t[-s <str> set serial number string]\n"
"\t[-i <0,1> disable/enable IR-endpoint]\n"
"\t[-g <conf> generate default config and write to device]\n"
"\t[ <conf> can be one of:]\n"
"\t[ realtek\t\tRealtek default (as without EEPROM)]\n"
"\t[ realtek_oem\t\tRealtek default OEM with EEPROM]\n"
"\t[ noxon\t\tTerratec NOXON DAB Stick]\n"
"\t[ terratec_black\tTerratec T Stick Black]\n"
"\t[ terratec_plus\tTerratec T Stick+ (DVB-T/DAB)]\n"
"\t[-w <filename> write dumped file to device]\n"
"\t[-r <filename> dump EEPROM to file]\n"
"\t[-h display this help text]\n"
"\nUse on your own risk, especially -w!\n");
exit(1);
}
int get_string_descriptor(int pos, uint8_t *data, char *str)
{
int len, i, j = 0;
len = data[pos];
if (data[pos + 1] != 0x03)
fprintf(stderr, "Error: invalid string descriptor!\n");
for (i = 2; i < len; i += 2)
str[j++] = data[pos + i];
str[j] = 0x00;
return pos + i;
}
int set_string_descriptor(int pos, uint8_t *data, char *str)
{
int i = 0, j = 2;
if (pos < 0)
return -1;
data[pos + 1] = 0x03;
while (str[i] != 0x00) {
if ((pos + j) >= 78) {
fprintf(stderr, "Error: string too long, truncated!\n");
return -1;
}
data[pos + j++] = str[i++];
data[pos + j++] = 0x00;
}
data[pos] = j;
return pos + j;
}
int parse_eeprom_to_conf(rtlsdr_config_t *conf, uint8_t *dat)
{
int pos;
if ((dat[0] != 0x28) || (dat[1] != 0x32))
fprintf(stderr, "Error: invalid RTL2832 EEPROM header!\n");
conf->vendor_id = dat[2] | (dat[3] << 8);
conf->product_id = dat[4] | (dat[5] << 8);
conf->have_serial = (dat[6] == 0xa5) ? 1 : 0;
conf->remote_wakeup = (dat[7] & 0x01) ? 1 : 0;
conf->enable_ir = (dat[7] & 0x02) ? 1 : 0;
pos = get_string_descriptor(STR_OFFSET, dat, conf->manufacturer);
pos = get_string_descriptor(pos, dat, conf->product);
get_string_descriptor(pos, dat, conf->serial);
return 0;
}
int gen_eeprom_from_conf(rtlsdr_config_t *conf, uint8_t *dat)
{
int pos;
dat[0] = 0x28;
dat[1] = 0x32;
dat[2] = conf->vendor_id & 0xff;
dat[3] = (conf->vendor_id >> 8) & 0xff ;
dat[4] = conf->product_id & 0xff;
dat[5] = (conf->product_id >> 8) & 0xff;
dat[6] = conf->have_serial ? 0xa5 : 0x00;
dat[7] = 0x14;
dat[7] |= conf->remote_wakeup ? 0x01 : 0x00;
dat[7] |= conf->enable_ir ? 0x02 : 0x00;
dat[8] = 0x02;
pos = set_string_descriptor(STR_OFFSET, dat, conf->manufacturer);
pos = set_string_descriptor(pos, dat, conf->product);
pos = set_string_descriptor(pos, dat, conf->serial);
dat[78] = 0x00; /* length of IR config */
return pos;
}
enum configs {
CONF_NONE = 0,
REALTEK,
REALTEK_EEPROM,
TERRATEC_NOXON,
TERRATEC_T_BLACK,
TERRATEC_T_PLUS,
};
void gen_default_conf(rtlsdr_config_t *conf, int config)
{
switch (config) {
case REALTEK:
fprintf(stderr, "Realtek default (as without EEPROM)\n");
conf->vendor_id = 0x0bda;
conf->product_id = 0x2832;
strcpy(conf->manufacturer, "Generic");
strcpy(conf->product, "RTL2832U DVB-T");
strcpy(conf->serial, "0");
conf->have_serial = 1;
conf->enable_ir = 0;
conf->remote_wakeup = 1;
break;
case REALTEK_EEPROM:
fprintf(stderr, "Realtek default OEM with EEPROM\n");
conf->vendor_id = 0x0bda;
conf->product_id = 0x2838;
strcpy(conf->manufacturer, "Realtek");
strcpy(conf->product, "RTL2838UHIDIR");
strcpy(conf->serial, "00000001");
conf->have_serial = 1;
conf->enable_ir = 1;
conf->remote_wakeup = 0;
break;
case TERRATEC_NOXON:
fprintf(stderr, "Terratec NOXON DAB Stick\n");
conf->vendor_id = 0x0ccd;
conf->product_id = 0x00b3;
strcpy(conf->manufacturer, "NOXON");
strcpy(conf->product, "DAB Stick");
strcpy(conf->serial, "0");
conf->have_serial = 1;
conf->enable_ir = 0;
conf->remote_wakeup = 1;
break;
case TERRATEC_T_BLACK:
fprintf(stderr, "Terratec T Stick Black\n");
conf->vendor_id = 0x0ccd;
conf->product_id = 0x00a9;
strcpy(conf->manufacturer, "Realtek");
strcpy(conf->product, "RTL2838UHIDIR");
strcpy(conf->serial, "00000001");
conf->have_serial = 1;
conf->enable_ir = 1;
conf->remote_wakeup = 0;
break;
case TERRATEC_T_PLUS:
fprintf(stderr, "Terratec ran T Stick+\n");
conf->vendor_id = 0x0ccd;
conf->product_id = 0x00d7;
strcpy(conf->manufacturer, "Realtek");
strcpy(conf->product, "RTL2838UHIDIR");
strcpy(conf->serial, "00000001");
conf->have_serial = 1;
conf->enable_ir = 1;
conf->remote_wakeup = 0;
break;
default:
break;
};
}
int main(int argc, char **argv)
{
int i, r, opt;
uint32_t dev_index = 0;
int device_count;
char *filename = NULL;
FILE *file = NULL;
char *manuf_str = NULL;
char *product_str = NULL;
char *serial_str = NULL;
uint8_t buf[EEPROM_SIZE];
rtlsdr_config_t conf;
int flash_file = 0;
int default_config = 0;
int change = 0;
int ir_endpoint = 0;
char ch;
while ((opt = getopt(argc, argv, "d:m:p:s:i:g:w:r:h?")) != -1) {
switch (opt) {
case 'd':
dev_index = atoi(optarg);
break;
case 'm':
manuf_str = optarg;
change = 1;
break;
case 'p':
product_str = optarg;
change = 1;
break;
case 's':
serial_str = optarg;
change = 1;
break;
case 'i':
ir_endpoint = (atoi(optarg) > 0) ? 1 : -1;
change = 1;
break;
case 'g':
if (!strcmp(optarg, "realtek"))
default_config = REALTEK;
else if (!strcmp(optarg, "realtek_oem"))
default_config = REALTEK_EEPROM;
else if (!strcmp(optarg, "noxon"))
default_config = TERRATEC_NOXON;
else if (!strcmp(optarg, "terratec_black"))
default_config = TERRATEC_T_BLACK;
else if (!strcmp(optarg, "terratec_plus"))
default_config = TERRATEC_T_PLUS;
if (default_config != CONF_NONE)
change = 1;
break;
case 'w':
flash_file = 1;
change = 1;
/* fall-through */
case 'r':
filename = optarg;
break;
default:
usage();
break;
}
}
device_count = rtlsdr_get_device_count();
if (!device_count) {
fprintf(stderr, "No supported devices found.\n");
exit(1);
}
fprintf(stderr, "Found %d device(s):\n", device_count);
for (i = 0; i < device_count; i++)
fprintf(stderr, " %d: %s\n", i, rtlsdr_get_device_name(i));
fprintf(stderr, "\n");
fprintf(stderr, "Using device %d: %s\n",
dev_index,
rtlsdr_get_device_name(dev_index));
r = rtlsdr_open(&dev, dev_index);
if (r < 0) {
fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index);
exit(1);
}
fprintf(stderr, "\n");
r = rtlsdr_read_eeprom(dev, buf, 0, EEPROM_SIZE);
if (r < 0) {
if (r == -3)
fprintf(stderr, "No EEPROM has been found.\n");
else
fprintf(stderr, "Failed to read EEPROM, err %i.\n", r);
goto exit;
}
if (r < 0)
return -1;
fprintf(stderr, "Current configuration:\n");
parse_eeprom_to_conf(&conf, buf);
dump_config(&conf);
if (filename) {
file = fopen(filename, flash_file ? "rb" : "wb");
if (!file) {
fprintf(stderr, "Error opening file!\n");
goto exit;
}
if (flash_file) {
if (fread(buf, 1, sizeof(buf), file) != sizeof(buf))
fprintf(stderr, "Error reading file!\n");
} else {
if (fwrite(buf, 1, sizeof(buf), file) != sizeof(buf))
fprintf(stderr, "Short write, exiting!\n");
else
fprintf(stderr, "\nDump to %s successful.\n", filename);
}
}
if (manuf_str)
strncpy((char*)&conf.manufacturer, manuf_str, MAX_STR_SIZE - 1);
if (product_str)
strncpy((char*)&conf.product, product_str, MAX_STR_SIZE - 1);
if (serial_str) {
conf.have_serial = 1;
strncpy((char*)&conf.serial, serial_str, MAX_STR_SIZE - 1);
}
if (ir_endpoint != 0)
conf.enable_ir = (ir_endpoint > 0) ? 1 : 0;
if (!change)
goto exit;
fprintf(stderr, "\nNew configuration:\n");
if (default_config != CONF_NONE)
gen_default_conf(&conf, default_config);
if (!flash_file) {
if (gen_eeprom_from_conf(&conf, buf) < 0)
goto exit;
}
parse_eeprom_to_conf(&conf, buf);
dump_config(&conf);
fprintf(stderr, "Write new configuration to device [y/n]? ");
while ((ch = getchar())) {
if (ch != 'y')
goto exit;
else
break;
}
r = rtlsdr_write_eeprom(dev, buf, 0, flash_file ? EEPROM_SIZE : 128);
if (r < 0)
fprintf(stderr, "Error while writing EEPROM: %i\n", r);
else
fprintf(stderr, "\nConfiguration successfully written.\n"
"Please replug the device for changes"
" to take effect.\n");
exit:
if (file)
fclose(file);
rtlsdr_close(dev);
return r >= 0 ? r : -r;
}