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https://github.com/greatscottgadgets/hackrf.git
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409acbc3c9
Co-authored-by: mndza <diego.hdmp@gmail.com> Co-authored-by: Martin Ling <martin-git@earth.li> Co-authored-by: Antoine van Gelder <antoine@greatscottgadgets.com>
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
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* Copyright 2025 Great Scott Gadgets <info@greatscottgadgets.com>
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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 "m0_state.h"
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#include <libopencm3/lpc43xx/sgpio.h>
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#include <stddef.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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