61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
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* Copyright 2022 Great Scott Gadgets
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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_m0_state.h"
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#include <libopencm3/lpc43xx/sgpio.h>
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#include <stddef.h>
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#include <usb_request.h>
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#include <usb_queue.h>
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void m0_set_mode(enum m0_mode mode)
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{
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// Set requested mode and flag bit.
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m0_state.requested_mode = M0_REQUEST_FLAG | mode;
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// The M0 may be blocked waiting for the next SGPIO interrupt.
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// In order to ensure that it sees our request, we need to set
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// the interrupt flag here. The M0 will clear the flag again
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// before acknowledging our request.
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SGPIO_SET_STATUS_1 = (1 << SGPIO_SLICE_A);
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// Wait for M0 to acknowledge by clearing the flag.
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while (m0_state.requested_mode & M0_REQUEST_FLAG) {}
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}
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usb_request_status_t usb_vendor_request_get_m0_state(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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usb_transfer_schedule_block(
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endpoint->in,
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(void*) &m0_state,
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sizeof(m0_state),
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NULL,
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NULL);
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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