RtlSdrIQ: can read samples from rtlsdr and dump those to file

1 files changed, 7 insertions, 2 deletions

diff --git a/Radio/HW/RtlSdr/r820/r820.swift b/Radio/HW/RtlSdr/r820/r820.swift
index 3f6d4a9..4c8859f 100644
--- a/Radio/HW/RtlSdr/r820/r820.swift
+++ b/Radio/HW/RtlSdr/r820/r820.swift
@@ -189,8 +189,13 @@ public class R820Tuner {
     ///  - len: input buffer length
     ///  - n_read: number of bytes received
     /// - Returns: -1 if there is no device, 0 on success or one of LIBUSB error
-    ///  LIBUSB_ERROR_TIMEOUT, LIBUSB_ERROR_PIPE,LIBUSB_ERROR_OVERFLOW
-    /// LIBUSB_ERROR_NO_DEVICE, LIBUSB_ERROR_BUSY LIBUSB_ERROR_INVALID_PARAM
+    ///  on success, the number of bytes actually transferred
+    /// LIBUSB_ERROR_TIMEOUT if the transfer timed out
+    /// LIBUSB_ERROR_PIPE if the control request was not supported by the device
+    /// LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
+    /// LIBUSB_ERROR_BUSY if called from event handling context
+    /// LIBUSB_ERROR_INVALID_PARAM if the transfer size is larger than the operating system and/or hardware can support (see Transfer length limitations)
+    ///  another LIBUSB_ERROR code on other failures
     ///
     func readSync(buf:UnsafeMutableRawPointer?,len: Int32,n_read:UnsafeMutablePointer<Int32>?) -> Int32 {
         return rtlsdr_read_sync(dev, buf, len, n_read);