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|
/* dvbtune - tune.c
Copyright (C) Dave Chapman 2001,2002
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <ctype.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <unistd.h>
#include <error.h>
#include <errno.h>
#ifdef NEWSTRUCT
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#else
#include <ost/dmx.h>
#include <ost/sec.h>
#include <ost/frontend.h>
#endif
#include "tune.h"
#ifndef NEWSTRUCT
int OSTSelftest(int fd)
{
int ans;
if ( (ans = ioctl(fd,FE_SELFTEST,0) < 0)){
perror("FE SELF TEST: ");
return -1;
}
return 0;
}
int OSTSetPowerState(int fd, uint32_t state)
{
int ans;
if ( (ans = ioctl(fd,FE_SET_POWER_STATE,state) < 0)){
perror("OST SET POWER STATE: ");
return -1;
}
return 0;
}
int OSTGetPowerState(int fd, uint32_t *state)
{
int ans;
if ( (ans = ioctl(fd,FE_GET_POWER_STATE,state) < 0)){
perror("OST GET POWER STATE: ");
return -1;
}
switch(*state){
case FE_POWER_ON:
fprintf(stderr,"POWER ON (%d)\n",*state);
break;
case FE_POWER_STANDBY:
fprintf(stderr,"POWER STANDBY (%d)\n",*state);
break;
case FE_POWER_SUSPEND:
fprintf(stderr,"POWER SUSPEND (%d)\n",*state);
break;
case FE_POWER_OFF:
fprintf(stderr,"POWER OFF (%d)\n",*state);
break;
default:
fprintf(stderr,"unknown (%d)\n",*state);
break;
}
return 0;
}
int SecGetStatus (int fd, struct secStatus *state)
{
int ans;
if ( (ans = ioctl(fd,SEC_GET_STATUS, state) < 0)){
perror("SEC GET STATUS: ");
return -1;
}
switch (state->busMode){
case SEC_BUS_IDLE:
fprintf(stderr,"SEC BUS MODE: IDLE (%d)\n",state->busMode);
break;
case SEC_BUS_BUSY:
fprintf(stderr,"SEC BUS MODE: BUSY (%d)\n",state->busMode);
break;
case SEC_BUS_OFF:
fprintf(stderr,"SEC BUS MODE: OFF (%d)\n",state->busMode);
break;
case SEC_BUS_OVERLOAD:
fprintf(stderr,"SEC BUS MODE: OVERLOAD (%d)\n",state->busMode);
break;
default:
fprintf(stderr,"SEC BUS MODE: unknown (%d)\n",state->busMode);
break;
}
switch (state->selVolt){
case SEC_VOLTAGE_OFF:
fprintf(stderr,"SEC VOLTAGE: OFF (%d)\n",state->selVolt);
break;
case SEC_VOLTAGE_LT:
fprintf(stderr,"SEC VOLTAGE: LT (%d)\n",state->selVolt);
break;
case SEC_VOLTAGE_13:
fprintf(stderr,"SEC VOLTAGE: 13 (%d)\n",state->selVolt);
break;
case SEC_VOLTAGE_13_5:
fprintf(stderr,"SEC VOLTAGE: 13.5 (%d)\n",state->selVolt);
break;
case SEC_VOLTAGE_18:
fprintf(stderr,"SEC VOLTAGE: 18 (%d)\n",state->selVolt);
break;
case SEC_VOLTAGE_18_5:
fprintf(stderr,"SEC VOLTAGE: 18.5 (%d)\n",state->selVolt);
break;
default:
fprintf(stderr,"SEC VOLTAGE: unknown (%d)\n",state->selVolt);
break;
}
fprintf(stderr,"SEC CONT TONE: %s\n", (state->contTone == SEC_TONE_ON ? "ON" : "OFF"));
return 0;
}
#endif
void print_status(FILE* fd,fe_status_t festatus) {
fprintf(fd,"FE_STATUS:");
if (festatus & FE_HAS_SIGNAL) fprintf(fd," FE_HAS_SIGNAL");
#ifdef NEWSTRUCT
if (festatus & FE_TIMEDOUT) fprintf(fd," FE_TIMEDOUT");
#else
if (festatus & FE_HAS_POWER) fprintf(fd," FE_HAS_POWER");
if (festatus & FE_SPECTRUM_INV) fprintf(fd," FE_SPECTRUM_INV");
if (festatus & FE_TUNER_HAS_LOCK) fprintf(fd," FE_TUNER_HAS_LOCK");
#endif
if (festatus & FE_HAS_LOCK) fprintf(fd," FE_HAS_LOCK");
if (festatus & FE_HAS_CARRIER) fprintf(fd," FE_HAS_CARRIER");
if (festatus & FE_HAS_VITERBI) fprintf(fd," FE_HAS_VITERBI");
if (festatus & FE_HAS_SYNC) fprintf(fd," FE_HAS_SYNC");
fprintf(fd,"\n");
}
#ifdef NEWSTRUCT
struct diseqc_cmd {
struct dvb_diseqc_master_cmd cmd;
uint32_t wait;
};
void diseqc_send_msg(int fd, fe_sec_voltage_t v, struct diseqc_cmd *cmd,
fe_sec_tone_mode_t t, fe_sec_mini_cmd_t b)
{
ioctl(fd, FE_SET_TONE, SEC_TONE_OFF);
ioctl(fd, FE_SET_VOLTAGE, v);
usleep(15 * 1000);
ioctl(fd, FE_DISEQC_SEND_MASTER_CMD, &cmd->cmd);
usleep(cmd->wait * 1000);
usleep(15 * 1000);
ioctl(fd, FE_DISEQC_SEND_BURST, b);
usleep(15 * 1000);
ioctl(fd, FE_SET_TONE, t);
}
/* digital satellite equipment control,
* specification is available from http://www.eutelsat.com/
*/
static int do_diseqc(int secfd, int sat_no, int pol, int hi_lo)
{
struct diseqc_cmd cmd =
{ {{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4}, 0 };
/* param: high nibble: reset bits, low nibble set bits,
* bits are: option, position, polarizaion, band
*/
cmd.cmd.msg[3] =
0xf0 | (((sat_no * 4) & 0x0f) | (hi_lo ? 1 : 0) | (pol ? 0 : 2));
diseqc_send_msg(secfd, pol,
&cmd, hi_lo,
(sat_no / 4) % 2 ? SEC_MINI_B : SEC_MINI_A);
return 1;
}
int check_status(int fd_frontend,struct dvb_frontend_parameters* feparams,int tone) {
int32_t strength;
fe_status_t festatus;
struct dvb_frontend_event event;
struct dvb_frontend_info fe_info;
struct pollfd pfd[1];
int status;
if (ioctl(fd_frontend,FE_SET_FRONTEND,feparams) < 0) {
perror("ERROR tuning channel\n");
return -1;
}
pfd[0].fd = fd_frontend;
pfd[0].events = POLLIN;
event.status=0;
while (((event.status & FE_TIMEDOUT)==0) && ((event.status & FE_HAS_LOCK)==0)) {
fprintf(stderr,"polling....\n");
if (poll(pfd,1,10000)){
if (pfd[0].revents & POLLIN){
fprintf(stderr,"Getting frontend event\n");
if ((status = ioctl(fd_frontend, FE_GET_EVENT, &event)) < 0){
if (errno != EOVERFLOW) {
perror("FE_GET_EVENT");
fprintf(stderr,"status = %d\n", status);
fprintf(stderr,"errno = %d\n", errno);
return -1;
}
else fprintf(stderr,"Overflow error, trying again (status = %d, errno = %d)", status, errno);
}
}
print_status(stderr,event.status);
}
}
if (event.status & FE_HAS_LOCK) {
switch(fe_info.type) {
case FE_OFDM:
fprintf(stderr,"Event: Frequency: %d\n",event.parameters.frequency);
break;
case FE_QPSK:
fprintf(stderr,"Event: Frequency: %d\n",(unsigned int)((event.parameters.frequency)+(tone==SEC_TONE_OFF ? LOF1 : LOF2)));
fprintf(stderr," SymbolRate: %d\n",event.parameters.u.qpsk.symbol_rate);
fprintf(stderr," FEC_inner: %d\n",event.parameters.u.qpsk.fec_inner);
fprintf(stderr,"\n");
break;
case FE_QAM:
fprintf(stderr,"Event: Frequency: %d\n",event.parameters.frequency);
fprintf(stderr," SymbolRate: %d\n",event.parameters.u.qpsk.symbol_rate);
fprintf(stderr," FEC_inner: %d\n",event.parameters.u.qpsk.fec_inner);
break;
default:
break;
}
strength=0;
ioctl(fd_frontend,FE_READ_BER,&strength);
fprintf(stderr,"Bit error rate: %d\n",strength);
strength=0;
ioctl(fd_frontend,FE_READ_SIGNAL_STRENGTH,&strength);
fprintf(stderr,"Signal strength: %d\n",strength);
strength=0;
ioctl(fd_frontend,FE_READ_SNR,&strength);
fprintf(stderr,"SNR: %d\n",strength);
festatus=0;
ioctl(fd_frontend,FE_READ_STATUS,&festatus);
print_status(stderr,festatus);
} else {
fprintf(stderr,"Not able to lock to the signal on the given frequency\n");
return -1;
}
return 0;
}
#else
int check_status(int fd_frontend,FrontendParameters* feparams,int tone) {
int i,res;
int32_t strength;
fe_status_t festatus;
FrontendEvent event;
FrontendInfo fe_info;
struct pollfd pfd[1];
i = 0; res = -1;
while ((i < 3) && (res < 0)) {
if (ioctl(fd_frontend,FE_SET_FRONTEND,feparams) < 0) {
perror("ERROR tuning channel\n");
return -1;
}
pfd[0].fd = fd_frontend;
pfd[0].events = POLLIN;
if (poll(pfd,1,10000)){
if (pfd[0].revents & POLLIN){
fprintf(stderr,"Getting frontend event\n");
if ( ioctl(fd_frontend, FE_GET_EVENT, &event) < 0) {
perror("FE_GET_EVENT");
return -1;
}
fprintf(stderr,"Received ");
switch(event.type){
case FE_UNEXPECTED_EV:
fprintf(stderr,"unexpected event\n");
res = -1;
break;
case FE_FAILURE_EV:
fprintf(stderr,"failure event\n");
res = -1;
break;
case FE_COMPLETION_EV:
fprintf(stderr,"completion event\n");
res = 0;
break;
}
}
i++;
}
}
if (res > 0)
switch (event.type) {
case FE_UNEXPECTED_EV: fprintf(stderr,"FE_UNEXPECTED_EV\n");
break;
case FE_COMPLETION_EV: fprintf(stderr,"FE_COMPLETION_EV\n");
break;
case FE_FAILURE_EV: fprintf(stderr,"FE_FAILURE_EV\n");
break;
}
if (event.type == FE_COMPLETION_EV) {
switch(fe_info.type) {
case FE_OFDM:
fprintf(stderr,"Event: Frequency: %d\n",event.u.completionEvent.Frequency);
break;
case FE_QPSK:
fprintf(stderr,"Event: Frequency: %d\n",(unsigned int)((event.u.completionEvent.Frequency)+(tone==SEC_TONE_OFF ? LOF1 : LOF2)));
fprintf(stderr," SymbolRate: %d\n",event.u.completionEvent.u.qpsk.SymbolRate);
fprintf(stderr," FEC_inner: %d\n",event.u.completionEvent.u.qpsk.FEC_inner);
fprintf(stderr,"\n");
break;
case FE_QAM:
fprintf(stderr,"Event: Frequency: %d\n",event.u.completionEvent.Frequency);
fprintf(stderr," SymbolRate: %d\n",event.u.completionEvent.u.qpsk.SymbolRate);
fprintf(stderr," FEC_inner: %d\n",event.u.completionEvent.u.qpsk.FEC_inner);
break;
default:
break;
}
strength=0;
ioctl(fd_frontend,FE_READ_BER,&strength);
fprintf(stderr,"Bit error rate: %d\n",strength);
strength=0;
ioctl(fd_frontend,FE_READ_SIGNAL_STRENGTH,&strength);
fprintf(stderr,"Signal strength: %d\n",strength);
strength=0;
ioctl(fd_frontend,FE_READ_SNR,&strength);
fprintf(stderr,"SNR: %d\n",strength);
festatus=0;
ioctl(fd_frontend,FE_READ_STATUS,&festatus);
fprintf(stderr,"FE_STATUS:");
if (festatus & FE_HAS_POWER) fprintf(stderr," FE_HAS_POWER");
if (festatus & FE_HAS_SIGNAL) fprintf(stderr," FE_HAS_SIGNAL");
if (festatus & FE_SPECTRUM_INV) fprintf(stderr," FE_SPECTRUM_INV");
if (festatus & FE_HAS_LOCK) fprintf(stderr," FE_HAS_LOCK");
if (festatus & FE_HAS_CARRIER) fprintf(stderr," FE_HAS_CARRIER");
if (festatus & FE_HAS_VITERBI) fprintf(stderr," FE_HAS_VITERBI");
if (festatus & FE_HAS_SYNC) fprintf(stderr," FE_HAS_SYNC");
if (festatus & FE_TUNER_HAS_LOCK) fprintf(stderr," FE_TUNER_HAS_LOCK");
fprintf(stderr,"\n");
} else {
fprintf(stderr,"Not able to lock to the signal on the given frequency\n");
return -1;
}
return 0;
}
#endif
int tune_it(int fd_frontend, int fd_sec, unsigned int freq, unsigned int srate, char pol, int tone, fe_spectral_inversion_t specInv, unsigned int diseqc,fe_modulation_t modulation,fe_code_rate_t HP_CodeRate,fe_transmit_mode_t TransmissionMode,fe_guard_interval_t guardInterval, fe_bandwidth_t bandwidth) {
int res;
#ifdef NEWSTRUCT
struct dvb_frontend_parameters feparams;
struct dvb_frontend_info fe_info;
fe_sec_voltage_t voltage;
#else
FrontendParameters feparams;
FrontendInfo fe_info;
secVoltage voltage;
struct secStatus sec_state;
#endif
/* discard stale frontend events */
/*
pfd[0].fd = fd_frontend;
pfd[0].events = POLLIN;
if (poll(pfd,1,500)){
if (pfd[0].revents & POLLIN){
while (1) {
if (ioctl (fd_frontend, FE_GET_EVENT, &event) == -1) { break; }
}
}
}
*/
if ( (res = ioctl(fd_frontend,FE_GET_INFO, &fe_info) < 0)){
perror("FE_GET_INFO: ");
return -1;
}
// OSTSelftest(fd_frontend);
// OSTSetPowerState(fd_frontend, FE_POWER_ON);
// OSTGetPowerState(fd_frontend, &festatus);
#ifdef NEWSTRUCT
fprintf(stderr,"Using DVB card \"%s\"\n",fe_info.name);
#endif
switch(fe_info.type) {
case FE_OFDM:
#ifdef NEWSTRUCT
if (freq < 1000000) freq*=1000UL;
feparams.frequency=freq;
feparams.inversion=specInv;
feparams.u.ofdm.bandwidth=bandwidth;
feparams.u.ofdm.code_rate_HP=HP_CodeRate;
feparams.u.ofdm.code_rate_LP=LP_CODERATE_DEFAULT;
feparams.u.ofdm.constellation=modulation;
feparams.u.ofdm.transmission_mode=TransmissionMode;
feparams.u.ofdm.guard_interval=guardInterval;
feparams.u.ofdm.hierarchy_information=HIERARCHY_DEFAULT;
#else
if (freq < 1000000) freq*=1000UL;
feparams.Frequency=freq;
feparams.Inversion=specInv;
feparams.u.ofdm.bandWidth=bandwidth;
feparams.u.ofdm.HP_CodeRate=HP_CodeRate;
feparams.u.ofdm.LP_CodeRate=LP_CODERATE_DEFAULT;
feparams.u.ofdm.Constellation=modulation;
feparams.u.ofdm.TransmissionMode=TransmissionMode;
feparams.u.ofdm.guardInterval=guardInterval;
feparams.u.ofdm.HierarchyInformation=HIERARCHY_DEFAULT;
#endif
fprintf(stderr,"tuning DVB-T (%s) to %d Hz\n",DVB_T_LOCATION,freq);
break;
case FE_QPSK:
#ifdef NEWSTRUCT
fprintf(stderr,"tuning DVB-S to L-Band:%d, Pol:%c Srate=%d, 22kHz=%s\n",feparams.frequency,pol,srate,tone == SEC_TONE_ON ? "on" : "off");
#else
fprintf(stderr,"tuning DVB-S to L-Band:%d, Pol:%c Srate=%d, 22kHz=%s\n",feparams.Frequency,pol,srate,tone == SEC_TONE_ON ? "on" : "off");
#endif
if ((pol=='h') || (pol=='H')) {
voltage = SEC_VOLTAGE_18;
} else {
voltage = SEC_VOLTAGE_13;
}
#ifdef NEWSTRUCT
if (diseqc==0) if (ioctl(fd_frontend,FE_SET_VOLTAGE,voltage) < 0) {
#else
if (ioctl(fd_sec,SEC_SET_VOLTAGE,voltage) < 0) {
#endif
perror("ERROR setting voltage\n");
}
if (freq > 2200000) {
// this must be an absolute frequency
if (freq < SLOF) {
#ifdef NEWSTRUCT
feparams.frequency=(freq-LOF1);
#else
feparams.Frequency=(freq-LOF1);
#endif
if (tone < 0) tone = SEC_TONE_OFF;
} else {
#ifdef NEWSTRUCT
feparams.frequency=(freq-LOF2);
#else
feparams.Frequency=(freq-LOF2);
#endif
if (tone < 0) tone = SEC_TONE_ON;
}
} else {
// this is an L-Band frequency
#ifdef NEWSTRUCT
feparams.frequency=freq;
#else
feparams.Frequency=freq;
#endif
}
#ifdef NEWSTRUCT
feparams.inversion=specInv;
feparams.u.qpsk.symbol_rate=srate;
feparams.u.qpsk.fec_inner=FEC_AUTO;
#else
feparams.Inversion=specInv;
feparams.u.qpsk.SymbolRate=srate;
feparams.u.qpsk.FEC_inner=FEC_AUTO;
#endif
#ifdef NEWSTRUCT
if (diseqc==0) {
if (ioctl(fd_frontend,FE_SET_TONE,tone) < 0) {
perror("ERROR setting tone\n");
}
}
#else
if (ioctl(fd_sec,SEC_SET_TONE,tone) < 0) {
perror("ERROR setting tone\n");
}
#endif
#ifdef NEWSTRUCT
if (diseqc > 0) {
do_diseqc(fd_frontend, diseqc-1,voltage,tone);
sleep(1);
}
#else
if (diseqc > 0) {
struct secCommand scmd;
struct secCmdSequence scmds;
scmds.continuousTone = tone;
scmds.voltage = voltage;
/*
scmds.miniCommand = toneBurst ? SEC_MINI_B : SEC_MINI_A;
*/
scmds.miniCommand = SEC_MINI_NONE;
scmd.type = 0;
scmds.numCommands = 1;
scmds.commands = &scmd;
scmd.u.diseqc.addr = 0x10;
scmd.u.diseqc.cmd = 0x38;
scmd.u.diseqc.numParams = 1;
scmd.u.diseqc.params[0] = 0xf0 |
(((diseqc - 1) << 2) & 0x0c) |
(voltage==SEC_VOLTAGE_18 ? 0x02 : 0) |
(tone==SEC_TONE_ON ? 0x01 : 0);
if (ioctl(fd_sec,SEC_SEND_SEQUENCE,&scmds) < 0) {
perror("Error sending DisEqC");
return -1;
}
}
#endif
break;
case FE_QAM:
fprintf(stderr,"tuning DVB-C to %d, srate=%d\n",freq,srate);
#ifdef NEWSTRUCT
feparams.frequency=freq;
feparams.inversion=specInv;
feparams.u.qam.symbol_rate = srate;
feparams.u.qam.fec_inner = FEC_AUTO;
feparams.u.qam.modulation = modulation;
#else
feparams.Frequency=freq;
feparams.Inversion=specInv;
feparams.u.qam.SymbolRate = srate;
feparams.u.qam.FEC_inner = FEC_AUTO;
feparams.u.qam.QAM = modulation;
#endif
break;
default:
fprintf(stderr,"Unknown FE type. Aborting\n");
exit(-1);
}
usleep(100000);
#ifndef NEWSTRUCT
if (fd_sec) SecGetStatus(fd_sec, &sec_state);
#endif
return(check_status(fd_frontend,&feparams,tone));
}
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