From fca98545f3007c41909b2ea804414445dfdf0215 Mon Sep 17 00:00:00 2001 From: Michael Ossmann Date: Sun, 11 Oct 2015 10:05:04 -0600 Subject: [PATCH] hackrf_transfer: stdout/stdin help --- host/hackrf-tools/src/hackrf_transfer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/host/hackrf-tools/src/hackrf_transfer.c b/host/hackrf-tools/src/hackrf_transfer.c index 294b45e1..865a93d8 100644 --- a/host/hackrf-tools/src/hackrf_transfer.c +++ b/host/hackrf-tools/src/hackrf_transfer.c @@ -426,8 +426,8 @@ int tx_callback(hackrf_transfer* transfer) { static void usage() { printf("Usage:\n"); printf("\t[-d serial_number] # Serial number of desired HackRF.\n"); - printf("\t-r # Receive data into file.\n"); - printf("\t-t # Transmit data from file.\n"); + printf("\t-r # Receive data into file (or \"-\" for stdout).\n"); + printf("\t-t # Transmit data from file (or \"-\" for stdin).\n"); printf("\t-w # Receive data into file with WAV header and automatic name.\n"); printf("\t # This is for SDR# compatibility and may not work with other software.\n"); printf("\t[-f freq_hz] # Frequency in Hz [%sMHz to %sMHz].\n",