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Added -h/-? option for help to all command line tools.

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This commit is contained in:
Michael Ossmann
2017-01-29 17:37:29 -07:00
parent 980abca0b5
commit 9211b70770
8 changed files with 74 additions and 24 deletions
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6
host/hackrf-tools/src/hackrf_transfer.c
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@@ -469,6 +469,7 @@ int tx_callback(hackrf_transfer* transfer) {
static void usage() {
printf("Usage:\n");
printf("\t-h # this help\n");
printf("\t[-d serial_number] # Serial number of desired HackRF.\n");
printf("\t-r <filename> # Receive data into file (use '-' for stdout).\n");
printf("\t-t <filename> # Transmit data from file (use '-' for stdin).\n");
@@ -544,7 +545,7 @@ 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, "Hwr:t:f:i:o:m:a:p:s:n:b:l:g:x:c:d:C:RS:")) != EOF )
while( (opt = getopt(argc, argv, "Hwr:t:f:i:o:m:a:p:s:n:b:l:g:x:c:d:C:RS:h?")) != EOF )
{
result = HACKRF_SUCCESS;
switch( opt )
@@ -673,9 +674,10 @@ int main(int argc, char** argv) {
result = parse_u32(optarg, &crystal_correct_ppm);
break;
case 'h':
case '?':
usage();
return EXIT_FAILURE;
return EXIT_SUCCESS;
default:
fprintf(stderr, "unknown argument '-%c %s'\n", opt, optarg);