117 lines
3.2 KiB
C
117 lines
3.2 KiB
C
/*
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* Copyright 2016 Mike Walters, Dominic Spill
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "usb_api_scan.h"
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#include "usb_queue.h"
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#include <stddef.h>
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#include <hackrf_core.h>
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#include "usb_api_transceiver.h"
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#include "usb_bulk_buffer.h"
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#include "tuning.h"
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#include "usb_endpoint.h"
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#define MIN(x,y) ((x)<(y)?(x):(y))
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#define MAX(x,y) ((x)>(y)?(x):(y))
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#define MIN_FREQ 1000000
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#define MAX_FREQ 6000000000
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volatile bool start_scan_mode = false;
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static uint64_t scan_freq;
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static uint64_t scan_freq_min;
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static uint64_t scan_freq_max;
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static uint64_t scan_freq_step;
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static inline uint64_t bytes_to_uint64(uint8_t* buf) {
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uint64_t tmp = buf[0] << 24 | buf[1] << 16 | buf[2] << 8 | buf[3];
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tmp <<= 32;
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tmp |= buf[4] << 24 | buf[5] << 16 | buf[6] << 8 | buf[7];
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return tmp;
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}
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usb_request_status_t usb_vendor_request_init_scan(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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uint64_t freqs[3];
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if ((stage == USB_TRANSFER_STAGE_SETUP) &&
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(endpoint->setup.length == 24)) {
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// DGS set scan frequencies here
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//freq_min = bytes_to_uint64();
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usb_transfer_schedule_block(endpoint->out, &freqs, 3*sizeof(uint64_t),
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NULL, NULL);
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scan_freq_min = MAX(MIN_FREQ, freqs[0]);
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scan_freq_max = MIN(MAX_FREQ, freqs[1]);
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scan_freq_step = freqs[2];
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scan_freq = scan_freq_min;
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set_freq(scan_freq);
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start_scan_mode = true;
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usb_transfer_schedule_ack(endpoint->in);
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}
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return USB_REQUEST_STATUS_OK;
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}
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void scan_mode(void) {
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unsigned int blocks_queued = 0;
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unsigned int phase = 0;
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while(transceiver_mode() != TRANSCEIVER_MODE_OFF) {
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// Set up IN transfer of buffer 0.
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if ( usb_bulk_buffer_offset >= 16384
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&& phase == 1
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&& transceiver_mode() != TRANSCEIVER_MODE_OFF) {
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usb_transfer_schedule_block(
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(transceiver_mode() == TRANSCEIVER_MODE_RX)
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? &usb_endpoint_bulk_in : &usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x0000],
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0x4000,
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NULL, NULL
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);
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phase = 0;
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blocks_queued++;
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}
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// Set up IN transfer of buffer 1.
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if ( usb_bulk_buffer_offset < 16384
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&& phase == 0
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&& transceiver_mode() != TRANSCEIVER_MODE_OFF) {
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usb_transfer_schedule_block(
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(transceiver_mode() == TRANSCEIVER_MODE_RX)
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? &usb_endpoint_bulk_in : &usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x4000],
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0x4000,
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NULL, NULL
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);
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phase = 1;
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blocks_queued++;
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}
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if (blocks_queued > 2) {
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scan_freq += scan_freq_step;
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if (scan_freq > scan_freq_max) {
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scan_freq = scan_freq_min;
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}
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set_freq(scan_freq);
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blocks_queued = 0;
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}
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}
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}
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