int parse_SX1301_configuration(const char * conf_file) {
int i;
const char conf_obj[] = "SX1301_conf";
char param_name[32]; /* used to generate variable parameter names */
const char *str; /* used to store string value from JSON object */
struct lgw_conf_board_s boardconf;
struct lgw_conf_rxrf_s rfconf;
struct lgw_conf_rxif_s ifconf;
JSON_Value *root_val;
JSON_Object *root = NULL;
JSON_Object *conf = NULL;
JSON_Value *val;
uint32_t sf, bw;
/* try to parse JSON */
root_val = json_parse_file_with_comments(conf_file);
root = json_value_get_object(root_val);
if (root == NULL) {
MSG("ERROR: %s id not a valid JSON file\n", conf_file);
exit(EXIT_FAILURE);
}
conf = json_object_get_object(root, conf_obj);
if (conf == NULL) {
MSG("INFO: %s does not contain a JSON object named %s\n", conf_file, conf_obj);
return -1;
} else {
MSG("INFO: %s does contain a JSON object named %s, parsing SX1301 parameters\n", conf_file, conf_obj);
}
/* set board configuration */
memset(&boardconf, 0, sizeof boardconf); /* initialize configuration structure */
val = json_object_get_value(conf, "lorawan_public"); /* fetch value (if possible) */
if (json_value_get_type(val) == JSONBoolean) {
boardconf.lorawan_public = (bool)json_value_get_boolean(val);
} else {
MSG("WARNING: Data type for lorawan_public seems wrong, please check\n");
boardconf.lorawan_public = false;
}
val = json_object_get_value(conf, "clksrc"); /* fetch value (if possible) */
if (json_value_get_type(val) == JSONNumber) {
boardconf.clksrc = (uint8_t)json_value_get_number(val);
} else {
MSG("WARNING: Data type for clksrc seems wrong, please check\n");
boardconf.clksrc = 0;
}
MSG("INFO: lorawan_public %d, clksrc %d\n", boardconf.lorawan_public, boardconf.clksrc);
/* all parameters parsed, submitting configuration to the HAL */
if (lgw_board_setconf(boardconf) != LGW_HAL_SUCCESS) {
MSG("WARNING: Failed to configure board\n");
}
/* set configuration for RF chains */
for (i = 0; i < LGW_RF_CHAIN_NB; ++i) {
memset(&rfconf, 0, sizeof(rfconf)); /* initialize configuration structure */
sprintf(param_name, "radio_%i", i); /* compose parameter path inside JSON structure */
val = json_object_get_value(conf, param_name); /* fetch value (if possible) */
if (json_value_get_type(val) != JSONObject) {
MSG("INFO: no configuration for radio %i\n", i);
continue;
}
/* there is an object to configure that radio, let's parse it */
sprintf(param_name, "radio_%i.enable", i);
val = json_object_dotget_value(conf, param_name);
if (json_value_get_type(val) == JSONBoolean) {
rfconf.enable = (bool)json_value_get_boolean(val);
} else {
rfconf.enable = false;
}
if (rfconf.enable == false) { /* radio disabled, nothing else to parse */
MSG("INFO: radio %i disabled\n", i);
} else { /* radio enabled, will parse the other parameters */
snprintf(param_name, sizeof param_name, "radio_%i.freq", i);
rfconf.freq_hz = (uint32_t)json_object_dotget_number(conf, param_name);
snprintf(param_name, sizeof param_name, "radio_%i.rssi_offset", i);
rfconf.rssi_offset = (float)json_object_dotget_number(conf, param_name);
snprintf(param_name, sizeof param_name, "radio_%i.type", i);
str = json_object_dotget_string(conf, param_name);
if (!strncmp(str, "SX1255", 6)) {
rfconf.type = LGW_RADIO_TYPE_SX1255;
} else if (!strncmp(str, "SX1257", 6)) {
rfconf.type = LGW_RADIO_TYPE_SX1257;
} else {
MSG("WARNING: invalid radio type: %s (should be SX1255 or SX1257)\n", str);
}
snprintf(param_name, sizeof param_name, "radio_%i.tx_enable", i);
val = json_object_dotget_value(conf, param_name);
if (json_value_get_type(val) == JSONBoolean) {
rfconf.tx_enable = (bool)json_value_get_boolean(val);
} else {
rfconf.tx_enable = false;
}
MSG("INFO: radio %i enabled (type %s), center frequency %u, RSSI offset %f, tx enabled %d\n", i, str, rfconf.freq_hz, rfconf.rssi_offset, rfconf.tx_enable);
}
/* all parameters parsed, submitting configuration to the HAL */
if (lgw_rxrf_setconf(i, rfconf) != LGW_HAL_SUCCESS) {
MSG("WARNING: invalid configuration for radio %i\n", i);
}
}
/* set configuration for LoRa multi-SF channels (bandwidth cannot be set) */
for (i = 0; i < LGW_MULTI_NB; ++i) {
memset(&ifconf, 0, sizeof(ifconf)); /* initialize configuration structure */
sprintf(param_name, "chan_multiSF_%i", i); /* compose parameter path inside JSON structure */
val = json_object_get_value(conf, param_name); /* fetch value (if possible) */
if (json_value_get_type(val) != JSONObject) {
MSG("INFO: no configuration for LoRa multi-SF channel %i\n", i);
continue;
}
/* there is an object to configure that LoRa multi-SF channel, let's parse it */
sprintf(param_name, "chan_multiSF_%i.enable", i);
val = json_object_dotget_value(conf, param_name);
if (json_value_get_type(val) == JSONBoolean) {
ifconf.enable = (bool)json_value_get_boolean(val);
} else {
ifconf.enable = false;
}
if (ifconf.enable == false) { /* LoRa multi-SF channel disabled, nothing else to parse */
MSG("INFO: LoRa multi-SF channel %i disabled\n", i);
} else { /* LoRa multi-SF channel enabled, will parse the other parameters */
sprintf(param_name, "chan_multiSF_%i.radio", i);
ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf, param_name);
sprintf(param_name, "chan_multiSF_%i.if", i);
ifconf.freq_hz = (int32_t)json_object_dotget_number(conf, param_name);
// TODO: handle individual SF enabling and disabling (spread_factor)
MSG("INFO: LoRa multi-SF channel %i enabled, radio %i selected, IF %i Hz, 125 kHz bandwidth, SF 7 to 12\n", i, ifconf.rf_chain, ifconf.freq_hz);
}
/* all parameters parsed, submitting configuration to the HAL */
if (lgw_rxif_setconf(i, ifconf) != LGW_HAL_SUCCESS) {
MSG("WARNING: invalid configuration for LoRa multi-SF channel %i\n", i);
}
}
/* set configuration for LoRa standard channel */
memset(&ifconf, 0, sizeof(ifconf)); /* initialize configuration structure */
val = json_object_get_value(conf, "chan_Lora_std"); /* fetch value (if possible) */
if (json_value_get_type(val) != JSONObject) {
MSG("INFO: no configuration for LoRa standard channel\n");
} else {
val = json_object_dotget_value(conf, "chan_Lora_std.enable");
if (json_value_get_type(val) == JSONBoolean) {
ifconf.enable = (bool)json_value_get_boolean(val);
} else {
ifconf.enable = false;
}
if (ifconf.enable == false) {
MSG("INFO: LoRa standard channel %i disabled\n", i);
} else {
ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf, "chan_Lora_std.radio");
ifconf.freq_hz = (int32_t)json_object_dotget_number(conf, "chan_Lora_std.if");
bw = (uint32_t)json_object_dotget_number(conf, "chan_Lora_std.bandwidth");
switch(bw) {
case 500000: ifconf.bandwidth = BW_500KHZ; break;
case 250000: ifconf.bandwidth = BW_250KHZ; break;
case 125000: ifconf.bandwidth = BW_125KHZ; break;
default: ifconf.bandwidth = BW_UNDEFINED;
}
sf = (uint32_t)json_object_dotget_number(conf, "chan_Lora_std.spread_factor");
switch(sf) {
case 7: ifconf.datarate = DR_LORA_SF7; break;
case 8: ifconf.datarate = DR_LORA_SF8; break;
case 9: ifconf.datarate = DR_LORA_SF9; break;
case 10: ifconf.datarate = DR_LORA_SF10; break;
case 11: ifconf.datarate = DR_LORA_SF11; break;
case 12: ifconf.datarate = DR_LORA_SF12; break;
default: ifconf.datarate = DR_UNDEFINED;
}
MSG("INFO: LoRa standard channel enabled, radio %i selected, IF %i Hz, %u Hz bandwidth, SF %u\n", ifconf.rf_chain, ifconf.freq_hz, bw, sf);
}
if (lgw_rxif_setconf(8, ifconf) != LGW_HAL_SUCCESS) {
MSG("WARNING: invalid configuration for LoRa standard channel\n");
}
}
/* set configuration for FSK channel */
memset(&ifconf, 0, sizeof(ifconf)); /* initialize configuration structure */
val = json_object_get_value(conf, "chan_FSK"); /* fetch value (if possible) */
if (json_value_get_type(val) != JSONObject) {
MSG("INFO: no configuration for FSK channel\n");
} else {
val = json_object_dotget_value(conf, "chan_FSK.enable");
if (json_value_get_type(val) == JSONBoolean) {
ifconf.enable = (bool)json_value_get_boolean(val);
} else {
ifconf.enable = false;
}
if (ifconf.enable == false) {
MSG("INFO: FSK channel %i disabled\n", i);
} else {
ifconf.rf_chain = (uint32_t)json_object_dotget_number(conf, "chan_FSK.radio");
ifconf.freq_hz = (int32_t)json_object_dotget_number(conf, "chan_FSK.if");
bw = (uint32_t)json_object_dotget_number(conf, "chan_FSK.bandwidth");
if (bw <= 7800) ifconf.bandwidth = BW_7K8HZ;
else if (bw <= 15600) ifconf.bandwidth = BW_15K6HZ;
else if (bw <= 31200) ifconf.bandwidth = BW_31K2HZ;
else if (bw <= 62500) ifconf.bandwidth = BW_62K5HZ;
else if (bw <= 125000) ifconf.bandwidth = BW_125KHZ;
else if (bw <= 250000) ifconf.bandwidth = BW_250KHZ;
else if (bw <= 500000) ifconf.bandwidth = BW_500KHZ;
else ifconf.bandwidth = BW_UNDEFINED;
ifconf.datarate = (uint32_t)json_object_dotget_number(conf, "chan_FSK.datarate");
MSG("INFO: FSK channel enabled, radio %i selected, IF %i Hz, %u Hz bandwidth, %u bps datarate\n", ifconf.rf_chain, ifconf.freq_hz, bw, ifconf.datarate);
}
if (lgw_rxif_setconf(9, ifconf) != LGW_HAL_SUCCESS) {
MSG("WARNING: invalid configuration for FSK channel\n");
}
}
json_value_free(root_val);
return 0;
}
int main(int argc, char **argv)
{
int i;
uint8_t status_var;
/* user entry parameters */
int xi = 0;
double xd = 0.0;
/* application parameters */
uint32_t f_target = 0; /* target frequency - invalid default value, has to be specified by user */
int sf = 10; /* SF10 by default */
int cr = 1; /* CR1 aka 4/5 by default */
int bw = 125; /* 125kHz bandwidth by default */
int pow = 14; /* 14 dBm by default */
int preamb = 8; /* 8 symbol preamble by default */
int pl_size = 16; /* 16 bytes payload by default */
int delay = 1000; /* 1 second between packets by default */
int repeat = -1; /* by default, repeat until stopped */
bool invert = false;
/* RF configuration (TX fail if RF chain is not enabled) */
enum lgw_radio_type_e radio_type = LGW_RADIO_TYPE_NONE;
uint8_t clocksource = 1; /* Radio B is source by default */
struct lgw_conf_board_s boardconf;
struct lgw_conf_rxrf_s rfconf;
/* allocate memory for packet sending */
struct lgw_pkt_tx_s txpkt; /* array containing 1 outbound packet + metadata */
/* loop variables (also use as counters in the packet payload) */
uint16_t cycle_count = 0;
/* parse command line options */
while ((i = getopt (argc, argv, "hif:b:s:c:p:l:z:t:x:r:k")) != -1) {
switch (i) {
case 'h':
usage();
return EXIT_FAILURE;
break;
case 'f': /* -f <float> target frequency in MHz */
i = sscanf(optarg, "%lf", &xd);
if ((i != 1) || (xd < 30.0) || (xd > 3000.0)) {
MSG("ERROR: invalid TX frequency\n");
usage();
return EXIT_FAILURE;
} else {
f_target = (uint32_t)((xd*1e6) + 0.5); /* .5 Hz offset to get rounding instead of truncating */
}
break;
case 'b': /* -b <int> Modulation bandwidth in kHz */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || ((xi != 125)&&(xi != 250)&&(xi != 500))) {
MSG("ERROR: invalid LoRa bandwidth\n");
usage();
return EXIT_FAILURE;
} else {
bw = xi;
}
break;
case 's': /* -s <int> Spreading Factor */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < 7) || (xi > 12)) {
MSG("ERROR: invalid spreading factor\n");
usage();
return EXIT_FAILURE;
} else {
sf = xi;
}
break;
case 'c': /* -c <int> Coding Rate */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < 1) || (xi > 4)) {
MSG("ERROR: invalid coding rate\n");
usage();
return EXIT_FAILURE;
} else {
cr = xi;
}
break;
case 'p': /* -p <int> RF power */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < -60) || (xi > 60)) {
MSG("ERROR: invalid RF power\n");
usage();
return EXIT_FAILURE;
} else {
pow = xi;
}
break;
case 'l': /* -r <uint> preamble length (symbols) */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < 6)) {
MSG("ERROR: preamble length must be >6 symbols \n");
usage();
return EXIT_FAILURE;
} else {
preamb = xi;
}
break;
case 'z': /* -z <uint> payload length (bytes) */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi <= 0)) {
MSG("ERROR: invalid payload size\n");
usage();
return EXIT_FAILURE;
} else {
pl_size = xi;
}
break;
case 't': /* -t <int> pause between packets (ms) */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < 0)) {
MSG("ERROR: invalid time between packets\n");
usage();
return EXIT_FAILURE;
} else {
delay = xi;
}
break;
case 'x': /* -x <int> numbers of times the sequence is repeated */
i = sscanf(optarg, "%i", &xi);
if ((i != 1) || (xi < -1)) {
MSG("ERROR: invalid number of repeats\n");
usage();
return EXIT_FAILURE;
} else {
repeat = xi;
}
break;
case 'r': /* <int> Radio type (1255, 1257) */
sscanf(optarg, "%i", &xi);
switch (xi) {
case 1255:
radio_type = LGW_RADIO_TYPE_SX1255;
break;
case 1257:
radio_type = LGW_RADIO_TYPE_SX1257;
break;
default:
printf("ERROR: invalid radio type\n");
usage();
return EXIT_FAILURE;
}
break;
case 'i': /* -i send packet using inverted modulation polarity */
invert = true;
break;
case 'k': /* <int> Concentrator clock source (Radio A or Radio B) */
sscanf(optarg, "%i", &xi);
clocksource = (uint8_t)xi;
break;
default:
MSG("ERROR: argument parsing\n");
usage();
return EXIT_FAILURE;
}
}
/* check parameter sanity */
if (f_target == 0) {
MSG("ERROR: frequency parameter not set, please use -f option to specify it.\n");
return EXIT_FAILURE;
}
if (radio_type == LGW_RADIO_TYPE_NONE) {
MSG("ERROR: radio type parameter not properly set, please use -r option to specify it.\n");
return EXIT_FAILURE;
}
printf("Sending %i packets on %u Hz (BW %i kHz, SF %i, CR %i, %i bytes payload, %i symbols preamble) at %i dBm, with %i ms between each\n", repeat, f_target, bw, sf, cr, pl_size, preamb, pow, delay);
/* configure signal handling */
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigact.sa_handler = sig_handler;
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
/* starting the concentrator */
/* board config */
memset(&boardconf, 0, sizeof(boardconf));
boardconf.lorawan_public = true;
boardconf.clksrc = clocksource;
lgw_board_setconf(boardconf);
/* RF config */
memset(&rfconf, 0, sizeof(rfconf));
rfconf.enable = true;
rfconf.freq_hz = f_target;
rfconf.rssi_offset = DEFAULT_RSSI_OFFSET;
rfconf.type = radio_type;
rfconf.tx_enable = true;
lgw_rxrf_setconf(RF_CHAIN, rfconf);
i = lgw_start();
if (i == LGW_HAL_SUCCESS) {
MSG("INFO: concentrator started, packet can be sent\n");
} else {
MSG("ERROR: failed to start the concentrator\n");
return EXIT_FAILURE;
}
/* fill-up payload and parameters */
memset(&txpkt, 0, sizeof(txpkt));
txpkt.freq_hz = f_target;
txpkt.tx_mode = IMMEDIATE;
txpkt.rf_chain = RF_CHAIN;
txpkt.rf_power = pow;
txpkt.modulation = MOD_LORA;
switch (bw) {
case 125: txpkt.bandwidth = BW_125KHZ; break;
case 250: txpkt.bandwidth = BW_250KHZ; break;
case 500: txpkt.bandwidth = BW_500KHZ; break;
default:
MSG("ERROR: invalid 'bw' variable\n");
return EXIT_FAILURE;
}
switch (sf) {
case 7: txpkt.datarate = DR_LORA_SF7; break;
case 8: txpkt.datarate = DR_LORA_SF8; break;
case 9: txpkt.datarate = DR_LORA_SF9; break;
case 10: txpkt.datarate = DR_LORA_SF10; break;
case 11: txpkt.datarate = DR_LORA_SF11; break;
case 12: txpkt.datarate = DR_LORA_SF12; break;
default:
MSG("ERROR: invalid 'sf' variable\n");
return EXIT_FAILURE;
}
switch (cr) {
case 1: txpkt.coderate = CR_LORA_4_5; break;
case 2: txpkt.coderate = CR_LORA_4_6; break;
case 3: txpkt.coderate = CR_LORA_4_7; break;
case 4: txpkt.coderate = CR_LORA_4_8; break;
default:
MSG("ERROR: invalid 'cr' variable\n");
return EXIT_FAILURE;
}
txpkt.invert_pol = invert;
txpkt.preamble = preamb;
txpkt.size = pl_size;
strcpy((char *)txpkt.payload, "TEST**abcdefghijklmnopqrstuvwxyz#0123456789#ABCDEFGHIJKLMNOPQRSTUVWXYZ#0123456789#abcdefghijklmnopqrstuvwxyz#0123456789#ABCDEFGHIJKLMNOPQRSTUVWXYZ#0123456789#abcdefghijklmnopqrstuvwxyz#0123456789#ABCDEFGHIJKLMNOPQRSTUVWXYZ#0123456789#abcdefghijklmnopqrs#" ); /* abc.. is for padding */
/* main loop */
cycle_count = 0;
while ((repeat == -1) || (cycle_count < repeat)) {
++cycle_count;
/* refresh counters in payload (big endian, for readability) */
txpkt.payload[4] = (uint8_t)(cycle_count >> 8); /* MSB */
txpkt.payload[5] = (uint8_t)(cycle_count & 0x00FF); /* LSB */
/* send packet */
printf("Sending packet number %u ...", cycle_count);
i = lgw_send(txpkt); /* non-blocking scheduling of TX packet */
if (i != LGW_HAL_SUCCESS) {
printf("ERROR\n");
return EXIT_FAILURE;
}
/* wait for packet to finish sending */
do {
wait_ms(5);
lgw_status(TX_STATUS, &status_var); /* get TX status */
} while (status_var != TX_FREE);
printf("OK\n");
/* wait inter-packet delay */
wait_ms(delay);
/* exit loop on user signals */
if ((quit_sig == 1) || (exit_sig == 1)) {
break;
}
}
/* clean up before leaving */
lgw_stop();
printf("Exiting LoRa concentrator TX test program\n");
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
static struct sigaction sigact; /* SIGQUIT&SIGINT&SIGTERM signal handling */
int i; /* loop and temporary variables */
/* Parameter parsing */
int option_index = 0;
static struct option long_options[] = {
{"dig", 1, 0, 0},
{"dac", 1, 0, 0},
{"mix", 1, 0, 0},
{"pa", 1, 0, 0},
{"mod", 1, 0, 0},
{"sf", 1, 0, 0},
{"bw", 1, 0, 0},
{"br", 1, 0, 0},
{"fdev", 1, 0, 0},
{"bt", 1, 0, 0},
{"notch", 1, 0, 0},
{0, 0, 0, 0}
};
unsigned int arg_u;
float arg_f;
char arg_s[64];
/* Application parameters */
uint32_t freq_hz = DEFAULT_FREQ_HZ;
uint8_t g_dig = DEFAULT_DIGITAL_GAIN;
uint8_t g_dac = DEFAULT_DAC_GAIN;
uint8_t g_mix = DEFAULT_MIXER_GAIN;
uint8_t g_pa = DEFAULT_PA_GAIN;
char mod[64] = DEFAULT_MODULATION;
uint8_t sf = DEFAULT_SF;
unsigned int bw_khz = DEFAULT_BW_KHZ;
float br_kbps = DEFAULT_BR_KBPS;
uint8_t fdev_khz = DEFAULT_FDEV_KHZ;
uint8_t bt = DEFAULT_BT;
uint32_t tx_notch_freq = DEFAULT_NOTCH_FREQ;
int32_t offset_i, offset_q;
/* RF configuration (TX fail if RF chain is not enabled) */
enum lgw_radio_type_e radio_type = LGW_RADIO_TYPE_SX1257;
struct lgw_conf_board_s boardconf;
struct lgw_conf_rxrf_s rfconf;
struct lgw_tx_gain_lut_s txlut;
struct lgw_pkt_tx_s txpkt;
/* Parse command line options */
while ((i = getopt_long (argc, argv, "hud::f:r:", long_options, &option_index)) != -1) {
switch (i) {
case 'h':
printf("~~~ Library version string~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
printf(" %s\n", lgw_version_info());
printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
printf(" -f <float> Tx RF frequency in MHz [800:1000]\n");
printf(" -r <int> Radio type (SX1255:1255, SX1257:1257)\n");
printf(" --notch <uint> Tx notch filter frequency in KhZ [126..250]\n");
printf(" --dig <uint> Digital gain trim, [0:3]\n");
printf(" 0:1, 1:7/8, 2:3/4, 3:1/2\n");
printf(" --mix <uint> Radio Tx mixer gain trim, [0:15]\n");
printf(" 15 corresponds to maximum gain, 1 LSB corresponds to 2dB step\n");
printf(" --pa <uint> PA gain trim, [0:3]\n");
printf(" --mod <char> Modulation type ['LORA','FSK','CW']\n");
printf(" --sf <uint> LoRa Spreading Factor, [7:12]\n");
printf(" --bw <uint> LoRa bandwidth in kHz, [125,250,500]\n");
printf(" --br <float> FSK bitrate in kbps, [0.5:250]\n");
printf(" --fdev <uint> FSK frequency deviation in kHz, [1:250]\n");
printf(" --bt <uint> FSK gaussian filter BT trim, [0:3]\n");
printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
return EXIT_SUCCESS;
break;
case 0:
if (strcmp(long_options[option_index].name,"dig") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u > 3)) {
printf("ERROR: argument parsing of --dig argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else
{
g_dig = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"dac") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u > 3)) {
printf("ERROR: argument parsing of --dac argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
g_dac = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"mix") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u > 15)) {
printf("ERROR: argument parsing of --mix argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
g_mix = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"pa") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u > 3)) {
printf("ERROR: argument parsing of --pa argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
g_pa = arg_u;
}
}
else if (strcmp(long_options[option_index].name,"mod") == 0) {
i = sscanf(optarg, "%s", arg_s);
if ((i != 1) || ((strcmp(arg_s,"LORA") != 0) && (strcmp(arg_s,"FSK") != 0) && (strcmp(arg_s,"CW") != 0))) {
printf("ERROR: argument parsing of --mod argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
sprintf(mod, "%s", arg_s);
}
}
else if (strcmp(long_options[option_index].name,"sf") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u < 7) || (arg_u > 12)) {
printf("ERROR: argument parsing of --sf argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
sf = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"bw") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || ((arg_u != 125) && (arg_u != 250) && (arg_u != 500))) {
printf("ERROR: argument parsing of --bw argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
bw_khz = arg_u;
}
}
else if (strcmp(long_options[option_index].name,"br") == 0) {
i = sscanf(optarg, "%f", &arg_f);
if ((i != 1) || (arg_f < 0.5) || (arg_f > 250)) {
printf("ERROR: argument parsing of --br argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
br_kbps = arg_f;
}
}
else if (strcmp(long_options[option_index].name,"fdev") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u < 1) || (arg_u > 250)) {
printf("ERROR: argument parsing of --fdev argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
fdev_khz = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"bt") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || (arg_u > 3)) {
printf("ERROR: argument parsing of --bt argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
bt = (uint8_t)arg_u;
}
}
else if (strcmp(long_options[option_index].name,"notch") == 0) {
i = sscanf(optarg, "%u", &arg_u);
if ((i != 1) || ((arg_u < 126) || (arg_u > 250))) {
printf("ERROR: argument parsing of --notch argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
tx_notch_freq = (uint32_t)arg_u * 1000U;
}
}
else {
printf("ERROR: argument parsing options. Use -h to print help\n");
return EXIT_FAILURE;
}
break;
case 'f':
i = sscanf(optarg, "%f", &arg_f);
if ((i != 1) || (arg_f < 1)) {
printf("ERROR: argument parsing of -f argument. Use -h to print help\n");
return EXIT_FAILURE;
}
else {
freq_hz = (uint32_t)((arg_f * 1e6) + 0.5);
}
break;
case 'r':
i = sscanf(optarg, "%u", &arg_u);
switch (arg_u) {
case 1255:
radio_type = LGW_RADIO_TYPE_SX1255;
break;
case 1257:
radio_type = LGW_RADIO_TYPE_SX1257;
break;
default:
printf("ERROR: argument parsing of -r argument. Use -h to print help\n");
return EXIT_FAILURE;
}
break;
default:
printf("ERROR: argument parsing options. Use -h to print help\n");
return EXIT_FAILURE;
}
}
/* Configure signal handling */
sigemptyset( &sigact.sa_mask );
sigact.sa_flags = 0;
sigact.sa_handler = sig_handler;
sigaction( SIGQUIT, &sigact, NULL );
sigaction( SIGINT, &sigact, NULL );
sigaction( SIGTERM, &sigact, NULL );
/* Board config */
memset(&boardconf, 0, sizeof(boardconf));
boardconf.lorawan_public = true;
boardconf.clksrc = 1; /* Radio B is source by default */
lgw_board_setconf(boardconf);
/* RF config */
memset(&rfconf, 0, sizeof(rfconf));
rfconf.enable = true;
rfconf.freq_hz = freq_hz;
rfconf.rssi_offset = DEFAULT_RSSI_OFFSET;
rfconf.type = radio_type;
rfconf.tx_enable = true;
rfconf.tx_notch_freq = tx_notch_freq;
lgw_rxrf_setconf(TX_RF_CHAIN, rfconf);
/* Tx gain LUT */
memset(&txlut, 0, sizeof txlut);
txlut.size = 1;
txlut.lut[0].dig_gain = g_dig;
txlut.lut[0].pa_gain = g_pa;
txlut.lut[0].dac_gain = g_dac;
txlut.lut[0].mix_gain = g_mix;
txlut.lut[0].rf_power = 0;
lgw_txgain_setconf(&txlut);
/* Start the concentrator */
i = lgw_start();
if (i == LGW_HAL_SUCCESS) {
MSG("INFO: concentrator started, packet can be sent\n");
} else {
MSG("ERROR: failed to start the concentrator\n");
return EXIT_FAILURE;
}
/* fill-up payload and parameters */
memset(&txpkt, 0, sizeof(txpkt));
txpkt.freq_hz = freq_hz;
txpkt.tx_mode = IMMEDIATE;
txpkt.rf_chain = TX_RF_CHAIN;
txpkt.rf_power = 0;
if (strcmp(mod, "FSK") == 0) {
txpkt.modulation = MOD_FSK;
txpkt.datarate = br_kbps * 1e3;
} else {
txpkt.modulation = MOD_LORA;
switch (bw_khz) {
case 125: txpkt.bandwidth = BW_125KHZ; break;
case 250: txpkt.bandwidth = BW_250KHZ; break;
case 500: txpkt.bandwidth = BW_500KHZ; break;
default:
MSG("ERROR: invalid 'bw' variable\n");
return EXIT_FAILURE;
}
switch (sf) {
case 7: txpkt.datarate = DR_LORA_SF7; break;
case 8: txpkt.datarate = DR_LORA_SF8; break;
case 9: txpkt.datarate = DR_LORA_SF9; break;
case 10: txpkt.datarate = DR_LORA_SF10; break;
case 11: txpkt.datarate = DR_LORA_SF11; break;
case 12: txpkt.datarate = DR_LORA_SF12; break;
default:
MSG("ERROR: invalid 'sf' variable\n");
return EXIT_FAILURE;
}
}
txpkt.coderate = CR_LORA_4_5;
txpkt.f_dev = fdev_khz;
txpkt.preamble = 65535;
txpkt.invert_pol = false;
txpkt.no_crc = true;
txpkt.no_header = true;
txpkt.size = 1;
txpkt.payload[0] = 0;
/* Overwrite settings */
lgw_reg_w(LGW_TX_MODE, 1); /* Tx continuous */
lgw_reg_w(LGW_FSK_TX_GAUSSIAN_SELECT_BT, bt);
if (strcmp(mod, "CW") == 0) {
/* Enable signal generator with DC */
lgw_reg_w(LGW_SIG_GEN_FREQ, 0);
lgw_reg_w(LGW_SIG_GEN_EN, 1);
lgw_reg_w(LGW_TX_OFFSET_I, 0);
lgw_reg_w(LGW_TX_OFFSET_Q, 0);
}
/* Send packet */
i = lgw_send(txpkt);
/* Recap all settings */
printf("SX1301 library version: %s\n", lgw_version_info());
if (strcmp(mod, "LORA") == 0) {
printf("Modulation: LORA SF:%d BW:%d kHz\n", sf, bw_khz);
}
else if (strcmp(mod, "FSK") == 0) {
printf("Modulation: FSK BR:%3.3f kbps FDEV:%d kHz BT:%d\n", br_kbps, fdev_khz, bt);
}
else if (strcmp(mod, "CW") == 0) {
printf("Modulation: CW\n");
}
switch(rfconf.type) {
case LGW_RADIO_TYPE_SX1255:
printf("Radio Type: SX1255\n");
break;
case LGW_RADIO_TYPE_SX1257:
printf("Radio Type: SX1257\n");
break;
default:
printf("ERROR: undefined radio type\n");
break;
}
printf("Frequency: %4.3f MHz\n", freq_hz/1e6);
printf("TX Gains: Digital:%d DAC:%d Mixer:%d PA:%d\n", g_dig, g_dac, g_mix, g_pa);
if (strcmp(mod, "CW") != 0) {
lgw_reg_r(LGW_TX_OFFSET_I, &offset_i);
lgw_reg_r(LGW_TX_OFFSET_Q, &offset_q);
printf("Calibrated DC offsets: I:%d Q:%d\n", offset_i, offset_q);
}
/* waiting for user input */
while ((quit_sig != 1) && (exit_sig != 1)) {
wait_ms(100);
}
/* clean up before leaving */
lgw_stop();
return 0;
}
int main(int argc, char **argv)
{
struct sigaction sigact; /* SIGQUIT&SIGINT&SIGTERM signal handling */
struct lgw_conf_board_s boardconf;
struct lgw_conf_rxrf_s rfconf;
struct lgw_conf_rxif_s ifconf;
struct lgw_pkt_rx_s rxpkt[4]; /* array containing up to 4 inbound packets metadata */
struct lgw_pkt_tx_s txpkt; /* configuration and metadata for an outbound packet */
struct lgw_pkt_rx_s *p; /* pointer on a RX packet */
int i, j;
int nb_pkt;
uint32_t fa = 0, fb = 0, ft = 0;
enum lgw_radio_type_e radio_type = LGW_RADIO_TYPE_NONE;
uint8_t clocksource = 0; /* Radio A is source in MTAC-LORA */
uint32_t tx_cnt = 0;
unsigned long loop_cnt = 0;
uint8_t status_var = 0;
double xd = 0.0;
int xi = 0;
/* parse command line options */
while ((i = getopt (argc, argv, "ha:b:t:r:k:")) != -1) {
switch (i) {
case 'h':
usage();
return -1;
break;
case 'a': /* <float> Radio A RX frequency in MHz */
sscanf(optarg, "%lf", &xd);
fa = (uint32_t)((xd*1e6) + 0.5); /* .5 Hz offset to get rounding instead of truncating */
break;
case 'b': /* <float> Radio B RX frequency in MHz */
sscanf(optarg, "%lf", &xd);
fb = (uint32_t)((xd*1e6) + 0.5); /* .5 Hz offset to get rounding instead of truncating */
break;
case 't': /* <float> Radio TX frequency in MHz */
sscanf(optarg, "%lf", &xd);
ft = (uint32_t)((xd*1e6) + 0.5); /* .5 Hz offset to get rounding instead of truncating */
break;
case 'r': /* <int> Radio type (1255, 1257) */
sscanf(optarg, "%i", &xi);
switch (xi) {
case 1255:
radio_type = LGW_RADIO_TYPE_SX1255;
break;
case 1257:
radio_type = LGW_RADIO_TYPE_SX1257;
break;
default:
printf("ERROR: invalid radio type\n");
usage();
return -1;
}
break;
case 'k': /* <int> Concentrator clock source (Radio A or Radio B) */
sscanf(optarg, "%i", &xi);
clocksource = (uint8_t)xi;
break;
default:
printf("ERROR: argument parsing\n");
usage();
return -1;
}
}
/* check input parameters */
if ((fa == 0) || (fb == 0) || (ft == 0)) {
printf("ERROR: missing frequency input parameter:\n");
printf(" Radio A RX: %u\n", fa);
printf(" Radio B RX: %u\n", fb);
printf(" Radio TX: %u\n", ft);
usage();
return -1;
}
if (radio_type == LGW_RADIO_TYPE_NONE) {
printf("ERROR: missing radio type parameter:\n");
usage();
return -1;
}
/* configure signal handling */
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigact.sa_handler = sig_handler;
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
/* beginning of LoRa concentrator-specific code */
printf("Beginning of test for loragw_hal.c\n");
printf("*** Library version information ***\n%s\n\n", lgw_version_info());
/* set configuration for board */
memset(&boardconf, 0, sizeof(boardconf));
boardconf.lorawan_public = true;
boardconf.clksrc = clocksource;
lgw_board_setconf(boardconf);
/* set configuration for RF chains */
memset(&rfconf, 0, sizeof(rfconf));
rfconf.enable = true;
rfconf.freq_hz = fa;
rfconf.rssi_offset = DEFAULT_RSSI_OFFSET;
rfconf.type = radio_type;
rfconf.tx_enable = true;
lgw_rxrf_setconf(0, rfconf); /* radio A, f0 */
rfconf.enable = true;
rfconf.freq_hz = fb;
rfconf.rssi_offset = DEFAULT_RSSI_OFFSET;
rfconf.type = radio_type;
rfconf.tx_enable = false;
lgw_rxrf_setconf(1, rfconf); /* radio B, f1 */
/* set configuration for LoRa multi-SF channels (bandwidth cannot be set) */
memset(&ifconf, 0, sizeof(ifconf));
ifconf.enable = true;
ifconf.rf_chain = 0;
ifconf.freq_hz = -300000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(0, ifconf); /* chain 0: LoRa 125kHz, all SF, on f0 - 0.3 MHz */
ifconf.enable = true;
ifconf.rf_chain = 0;
ifconf.freq_hz = 300000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(1, ifconf); /* chain 1: LoRa 125kHz, all SF, on f0 + 0.3 MHz */
ifconf.enable = true;
ifconf.rf_chain = 1;
ifconf.freq_hz = -300000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(2, ifconf); /* chain 2: LoRa 125kHz, all SF, on f1 - 0.3 MHz */
ifconf.enable = true;
ifconf.rf_chain = 1;
ifconf.freq_hz = 300000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(3, ifconf); /* chain 3: LoRa 125kHz, all SF, on f1 + 0.3 MHz */
ifconf.enable = true;
ifconf.rf_chain = 0;
ifconf.freq_hz = -100000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(4, ifconf); /* chain 4: LoRa 125kHz, all SF, on f0 - 0.1 MHz */
ifconf.enable = true;
ifconf.rf_chain = 0;
ifconf.freq_hz = 100000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(5, ifconf); /* chain 5: LoRa 125kHz, all SF, on f0 + 0.1 MHz */
ifconf.enable = true;
ifconf.rf_chain = 1;
ifconf.freq_hz = -100000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(6, ifconf); /* chain 6: LoRa 125kHz, all SF, on f1 - 0.1 MHz */
ifconf.enable = true;
ifconf.rf_chain = 1;
ifconf.freq_hz = 100000;
ifconf.datarate = DR_LORA_MULTI;
lgw_rxif_setconf(7, ifconf); /* chain 7: LoRa 125kHz, all SF, on f1 + 0.1 MHz */
/* set configuration for LoRa 'stand alone' channel */
memset(&ifconf, 0, sizeof(ifconf));
ifconf.enable = true;
ifconf.rf_chain = 0;
ifconf.freq_hz = 0;
ifconf.bandwidth = BW_250KHZ;
ifconf.datarate = DR_LORA_SF10;
lgw_rxif_setconf(8, ifconf); /* chain 8: LoRa 250kHz, SF10, on f0 MHz */
/* set configuration for FSK channel */
memset(&ifconf, 0, sizeof(ifconf));
ifconf.enable = true;
ifconf.rf_chain = 1;
ifconf.freq_hz = 0;
ifconf.bandwidth = BW_250KHZ;
ifconf.datarate = 64000;
lgw_rxif_setconf(9, ifconf); /* chain 9: FSK 64kbps, on f1 MHz */
/* set configuration for TX packet */
memset(&txpkt, 0, sizeof(txpkt));
txpkt.freq_hz = ft;
txpkt.tx_mode = IMMEDIATE;
txpkt.rf_power = 10;
txpkt.modulation = MOD_LORA;
txpkt.bandwidth = BW_250KHZ;
txpkt.datarate = DR_LORA_SF10;
txpkt.coderate = CR_LORA_4_5;
strcpy((char *)txpkt.payload, "TX.TEST.LORA.GW.????" );
txpkt.size = 20;
txpkt.preamble = 6;
txpkt.rf_chain = 0;
/*
memset(&txpkt, 0, sizeof(txpkt));
txpkt.freq_hz = F_TX;
txpkt.tx_mode = IMMEDIATE;
txpkt.rf_power = 10;
txpkt.modulation = MOD_FSK;
txpkt.f_dev = 50;
txpkt.datarate = 64000;
strcpy((char *)txpkt.payload, "TX.TEST.LORA.GW.????" );
txpkt.size = 20;
txpkt.preamble = 4;
txpkt.rf_chain = 0;
*/
/* connect, configure and start the LoRa concentrator */
i = lgw_start();
if (i == LGW_HAL_SUCCESS) {
printf("*** Concentrator started ***\n");
} else {
printf("*** Impossible to start concentrator ***\n");
return -1;
}
/* once configured, dump content of registers to a file, for reference */
// FILE * reg_dump = NULL;
// reg_dump = fopen("reg_dump.log", "w");
// if (reg_dump != NULL) {
// lgw_reg_check(reg_dump);
// fclose(reg_dump);
// }
while ((quit_sig != 1) && (exit_sig != 1)) {
loop_cnt++;
/* fetch N packets */
nb_pkt = lgw_receive(ARRAY_SIZE(rxpkt), rxpkt);
if (nb_pkt == 0) {
wait_ms(300);
} else {
/* display received packets */
for(i=0; i < nb_pkt; ++i) {
p = &rxpkt[i];
printf("---\nRcv pkt #%d >>", i+1);
if (p->status == STAT_CRC_OK) {
printf(" if_chain:%2d", p->if_chain);
printf(" tstamp:%010u", p->count_us);
printf(" size:%3u", p->size);
switch (p-> modulation) {
case MOD_LORA: printf(" LoRa"); break;
case MOD_FSK: printf(" FSK"); break;
default: printf(" modulation?");
}
switch (p->datarate) {
case DR_LORA_SF7: printf(" SF7"); break;
case DR_LORA_SF8: printf(" SF8"); break;
case DR_LORA_SF9: printf(" SF9"); break;
case DR_LORA_SF10: printf(" SF10"); break;
case DR_LORA_SF11: printf(" SF11"); break;
case DR_LORA_SF12: printf(" SF12"); break;
default: printf(" datarate?");
}
switch (p->coderate) {
case CR_LORA_4_5: printf(" CR1(4/5)"); break;
case CR_LORA_4_6: printf(" CR2(2/3)"); break;
case CR_LORA_4_7: printf(" CR3(4/7)"); break;
case CR_LORA_4_8: printf(" CR4(1/2)"); break;
default: printf(" coderate?");
}
printf("\n");
printf(" RSSI:%+6.1f SNR:%+5.1f (min:%+5.1f, max:%+5.1f) payload:\n", p->rssi, p->snr, p->snr_min, p->snr_max);
for (j = 0; j < p->size; ++j) {
printf(" %02X", p->payload[j]);
}
printf(" #\n");
} else if (p->status == STAT_CRC_BAD) {
printf(" if_chain:%2d", p->if_chain);
printf(" tstamp:%010u", p->count_us);
printf(" size:%3u\n", p->size);
printf(" CRC error, damaged packet\n\n");
} else if (p->status == STAT_NO_CRC){
printf(" if_chain:%2d", p->if_chain);
printf(" tstamp:%010u", p->count_us);
printf(" size:%3u\n", p->size);
printf(" no CRC\n\n");
} else {
printf(" if_chain:%2d", p->if_chain);
printf(" tstamp:%010u", p->count_us);
printf(" size:%3u\n", p->size);
printf(" invalid status ?!?\n\n");
}
}
}
/* send a packet every X loop */
if (loop_cnt%16 == 0) {
/* 32b counter in the payload, big endian */
txpkt.payload[16] = 0xff & (tx_cnt >> 24);
txpkt.payload[17] = 0xff & (tx_cnt >> 16);
txpkt.payload[18] = 0xff & (tx_cnt >> 8);
txpkt.payload[19] = 0xff & tx_cnt;
i = lgw_send(txpkt); /* non-blocking scheduling of TX packet */
j = 0;
printf("+++\nSending packet #%d, rf path %d, return %d\nstatus -> ", tx_cnt, txpkt.rf_chain, i);
do {
++j;
wait_ms(100);
lgw_status(TX_STATUS, &status_var); /* get TX status */
printf("%d:", status_var);
} while ((status_var != TX_FREE) && (j < 100));
++tx_cnt;
printf("\nTX finished\n");
}
}
int pktfwd_init(config_lgw_t *lgw)
{
struct termios newtty;
struct sigaction sig;
int i, ret;
if (lgw_board_setconf(lgw->board.conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: Failed to configure board");
}
if (lgw_lbt_setconf(lgw->lbt.conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: Failed to configure lbt");
}
if (lgw_txgain_setconf(&lgw->txlut.conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: Failed to configure concentrator TX Gain LUT");
}
for (i=0; i<LGW_RF_CHAIN_NB; i++) {
if (lgw_rxrf_setconf(i, lgw->radio[i].conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: invalid configuration for radio %i", i);
}
}
for (i = 0; i < LGW_MULTI_NB; ++i) {
if (lgw_rxif_setconf(i, lgw->chan[i].conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: invalid configuration for Lora multi-SF channel %i", i);
}
}
if (lgw_rxif_setconf(8, lgw->chan[8].conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: invalid configuration for Lora multi-SF channel %i", i);
}
if (lgw_rxif_setconf(9, lgw->chan[9].conf) != LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "WARNING: invalid configuration for Lora multi-SF channel %i", i);
}
sigemptyset (&sig.sa_mask);
sig.sa_handler = pktfwd_sig_handler;
sig.sa_flags = 0;
sigaction(SIGQUIT, &sig, NULL);
sigaction(SIGINT, &sig, NULL);
sigaction(SIGTERM, &sig, NULL);
#ifdef PKTFWD_DISABLE_ECHO
if(tcgetattr(STDIN_FILENO, &savedtty) != 0){
log_puts(LOG_FATAL, "Fatal error tcgetattr");
exit(EXIT_FAILURE);
}
newtty = savedtty;
newtty.c_lflag &= ~ECHO;
tcsetattr(STDIN_FILENO, TCSAFLUSH, &newtty);
#endif
ret = lgw_start();
if (ret == LGW_HAL_SUCCESS) {
log_puts(LOG_NORMAL, "Concentrator started");
} else {
log_puts(LOG_NORMAL, "Concentrator failed to start");
exit(EXIT_FAILURE);
}
return 0;
}