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