7057235a14
This fixes bug #1042, which occured when an RX->OFF->RX sequence happened quickly enough that the loop in rx_mode() did not see the change. As a result, the enable_baseband_streaming() call at the start of that function was not repeated for the new RX operation, so RX progress stalled. To solve this, the vendor request handler now increments a sequence number when it changes the transceiver mode. Instead of the RX loop checking whether the transceiver mode is still RX, it now checks whether the current sequence number is the same as when it was started. If not, there must have been at least one mode change, so the loop exits, and the main loop starts the necessary loop for the new mode. The same behaviour is implemented for the TX and sweep loops. For this approach to be reliable, we must ensure that when deciding which mode and sequence number to use, we take both values from the same set_transceiver_mode request. To achieve this, we briefly disable the USB0 interrupt to stop the vendor request handler from running whilst reading the mode and sequence number together. Then the loop dispatch proceeds using those pre-read values.
40 lines
1.1 KiB
C
40 lines
1.1 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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#ifndef __USB_API_SWEEP_H__
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#define __USB_API_SWEEP_H__
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#include <stdbool.h>
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#include <usb_type.h>
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#include <usb_request.h>
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enum sweep_style {
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LINEAR = 0,
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INTERLEAVED = 1,
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};
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usb_request_status_t usb_vendor_request_init_sweep(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage);
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void sweep_mode(uint32_t seq);
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#endif /* __USB_API_SWEEP_H__ */
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