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Add signal source mode to hackrf_transfer

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Now hackrf_transfer can act as an analog signal source to generate a
pure SINE wave at the given frequency.
This commit is contained in:
dovecho
2014-07-06 00:10:07 +08:00
parent be88d2332d
commit 8e5de3b4a8
1 changed files with 73 additions and 27 deletions
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100
host/hackrf-tools/src/hackrf_transfer.c
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@ -171,7 +171,9 @@ t_wav_file_hdr wave_file_hdr =
typedef enum {
TRANSCEIVER_MODE_OFF = 0,
TRANSCEIVER_MODE_RX = 1,
TRANSCEIVER_MODE_TX = 2
TRANSCEIVER_MODE_TX = 2,
TRANSCEIVER_MODE_SS = 3
} transceiver_mode_t;
static transceiver_mode_t transceiver_mode = TRANSCEIVER_MODE_RX;
@ -297,6 +299,9 @@ volatile bool do_exit = false;
FILE* fd = NULL;
volatile uint32_t byte_count = 0;
bool signalsource = false;
uint32_t power_level = 1;
bool receive = false;
bool receive_wav = false;
@ -367,6 +372,7 @@ int rx_callback(hackrf_transfer* transfer) {
int tx_callback(hackrf_transfer* transfer) {
size_t bytes_to_read;
int i;
if( fd != NULL )
{
@ -390,8 +396,27 @@ int tx_callback(hackrf_transfer* transfer) {
} else {
return 0;
}
} else {
return -1;
} else if (transceiver_mode == TRANSCEIVER_MODE_SS) {
/* Transmit SINE signal with specific powerlevel */
ssize_t bytes_read;
byte_count += transfer->valid_length;
bytes_to_read = transfer->valid_length;
if (limit_num_samples) {
if (bytes_to_read >= bytes_to_xfer) {
bytes_to_read = bytes_to_xfer;
}
bytes_to_xfer -= bytes_to_read;
}
for(i = 0;i<bytes_to_read;i++)
transfer->buffer[i] = power_level;
if (limit_num_samples && (bytes_to_xfer == 0)) {
return -1;
} else {
return 0;
}
}
}
@ -419,6 +444,7 @@ static void usage() {
printf("\t[-s sample_rate_hz] # Sample rate in Hz (8/10/12.5/16/20MHz, default %sMHz).\n",
u64toa((DEFAULT_SAMPLE_RATE_HZ/FREQ_ONE_MHZ),&ascii_u64_data1));
printf("\t[-n num_samples] # Number of samples to transfer (default is unlimited).\n");
printf("\t[-c power_level] # Signal source mode, power level, 0-255, dc value to DAC (default is 1).\n");
printf("\t[-b baseband_filter_bw_hz] # Set baseband filter bandwidth in MHz.\n\tPossible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz, default < sample_rate_hz.\n" );
}
@ -460,7 +486,7 @@ int main(int argc, char** argv) {
float time_diff;
unsigned int lna_gain=8, vga_gain=20, txvga_gain=0;
while( (opt = getopt(argc, argv, "wr:t:f:i:o:m:a:p:s:n:b:l:g:x:")) != EOF )
while( (opt = getopt(argc, argv, "wr:t:f:i:o:m:a:p:s:n:b:l:g:x:z:")) != EOF )
{
result = HACKRF_SUCCESS;
switch( opt )
@ -537,6 +563,12 @@ int main(int argc, char** argv) {
result = parse_u32(optarg, &baseband_filter_bw_hz);
break;
case 'c':
transmit = true;
signalsource = true;
result = parse_u32(optarg, &power_level);
break;
default:
printf("unknown argument '-%c %s'\n", opt, optarg);
usage();
@ -707,7 +739,16 @@ int main(int argc, char** argv) {
transceiver_mode = TRANSCEIVER_MODE_TX;
}
if( receive_wav )
if (signalsource) {
transceiver_mode = TRANSCEIVER_MODE_SS;
if (power_level >255) {
printf("argument error: power level shall be in between 0 and 255.\n");
usage();
return EXIT_FAILURE;
}
}
if( receive_wav )
{
time (&rawtime);
timeinfo = localtime (&rawtime);
@ -719,12 +760,15 @@ int main(int argc, char** argv) {
printf("Receive wav file: %s\n", path);
}
if( path == NULL ) {
printf("specify a path to a file to transmit/receive\n");
usage();
return EXIT_FAILURE;
// In signal source mode, the PATH argument is neglected.
if (transceiver_mode != TRANSCEIVER_MODE_SS) {
if( path == NULL ) {
printf("specify a path to a file to transmit/receive\n");
usage();
return EXIT_FAILURE;
}
}
result = hackrf_init();
if( result != HACKRF_SUCCESS ) {
printf("hackrf_init() failed: %s (%d)\n", hackrf_error_name(result), result);
@ -739,25 +783,27 @@ int main(int argc, char** argv) {
return EXIT_FAILURE;
}
if( transceiver_mode == TRANSCEIVER_MODE_RX )
{
fd = fopen(path, "wb");
} else {
fd = fopen(path, "rb");
}
if (transceiver_mode != TRANSCEIVER_MODE_SS) {
if( transceiver_mode == TRANSCEIVER_MODE_RX )
{
fd = fopen(path, "wb");
} else {
fd = fopen(path, "rb");
}
if( fd == NULL ) {
printf("Failed to open file: %s\n", path);
return EXIT_FAILURE;
if( fd == NULL ) {
printf("Failed to open file: %s\n", path);
return EXIT_FAILURE;
}
/* Change fd buffer to have bigger one to store or read data on/to HDD */
result = setvbuf(fd , NULL , _IOFBF , FD_BUFFER_SIZE);
if( result != 0 ) {
printf("setvbuf() failed: %d\n", result);
usage();
return EXIT_FAILURE;
}
}
/* Change fd buffer to have bigger one to store or read data on/to HDD */
result = setvbuf(fd , NULL , _IOFBF , FD_BUFFER_SIZE);
if( result != 0 ) {
printf("setvbuf() failed: %d\n", result);
usage();
return EXIT_FAILURE;
}
/* Write Wav header */
if( receive_wav )
{