diff options
Diffstat (limited to 'Transceiver52M/radioIO.cpp')
-rw-r--r-- | Transceiver52M/radioIO.cpp | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/Transceiver52M/radioIO.cpp b/Transceiver52M/radioIO.cpp deleted file mode 100644 index 9956e87..0000000 --- a/Transceiver52M/radioIO.cpp +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Radio device I/O interface - * Written by Thomas Tsou <ttsou@vt.edu> - * - * Copyright 2011 Free Software Foundation, Inc. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - * See the COPYING file in the main directory for details. - */ - -#include <radioInterface.h> -#include <Logger.h> - -/* Device side buffers */ -static short rx_buf[OUTCHUNK * 2 * 2]; -static short tx_buf[INCHUNK * 2 * 2]; - -/* Complex float to short conversion */ -static int float_to_short(short *shrt_out, float *flt_in, int num) -{ - int i; - - for (i = 0; i < num; i++) { - shrt_out[2 * i + 0] = flt_in[2 * i + 0]; - shrt_out[2 * i + 1] = flt_in[2 * i + 1]; - } - - return i; -} - -/* Comlpex short to float conversion */ -static int short_to_float(float *flt_out, short *shrt_in, int num) -{ - int i; - - for (i = 0; i < num; i++) { - flt_out[2 * i + 0] = shrt_in[2 * i + 0]; - flt_out[2 * i + 1] = shrt_in[2 * i + 1]; - } - - return i; -} - -/* Receive a timestamped chunk from the device */ -void RadioInterface::pullBuffer() -{ - bool local_underrun; - - /* Read samples. Fail if we don't get what we want. */ - int num_rd = mRadio->readSamples(rx_buf, OUTCHUNK, &overrun, - readTimestamp, &local_underrun); - - LOG(DEBUG) << "Rx read " << num_rd << " samples from device"; - assert(num_rd == OUTCHUNK); - - underrun |= local_underrun; - readTimestamp += (TIMESTAMP) num_rd; - - short_to_float(rcvBuffer + 2 * rcvCursor, rx_buf, num_rd); - rcvCursor += num_rd; -} - -/* Send timestamped chunk to the device with arbitrary size */ -void RadioInterface::pushBuffer() -{ - if (sendCursor < INCHUNK) - return; - - float_to_short(tx_buf, sendBuffer, sendCursor); - - /* Write samples. Fail if we don't get what we want. */ - int num_smpls = mRadio->writeSamples(tx_buf, - sendCursor, - &underrun, - writeTimestamp); - assert(num_smpls == sendCursor); - - writeTimestamp += (TIMESTAMP) num_smpls; - sendCursor = 0; -} |