94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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* Copyright 2012 Jared Boone
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* Copyright 2013 Benjamin Vernoux
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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 "sgpio_isr.h"
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#include <libopencm3/lpc43xx/sgpio.h>
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#include "usb_bulk_buffer.h"
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void sgpio_isr_rx() {
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SGPIO_CLR_STATUS_1 = (1 << SGPIO_SLICE_A);
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uint32_t* const p = (uint32_t*)&usb_bulk_buffer[usb_bulk_buffer_offset];
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__asm__(
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"ldr r0, [%[SGPIO_REG_SS], #44]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #0]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #20]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #4]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #40]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #8]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #8]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #12]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #36]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #16]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #16]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #20]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #32]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #24]\n\t"
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"ldr r0, [%[SGPIO_REG_SS], #0]\n\t"
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"rev16 r0, r0\n\t" /* Swap QI -> IQ */
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"str r0, [%[p], #28]\n\t"
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:
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: [SGPIO_REG_SS] "l" (SGPIO_PORT_BASE + 0x100),
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[p] "l" (p)
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: "r0"
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);
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usb_bulk_buffer_offset = (usb_bulk_buffer_offset + 32) & usb_bulk_buffer_mask;
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}
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void sgpio_isr_tx() {
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SGPIO_CLR_STATUS_1 = (1 << SGPIO_SLICE_A);
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uint32_t* const p = (uint32_t*)&usb_bulk_buffer[usb_bulk_buffer_offset];
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__asm__(
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"ldr r0, [%[p], #0]\n\t"
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"str r0, [%[SGPIO_REG_SS], #44]\n\t"
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"ldr r0, [%[p], #4]\n\t"
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"str r0, [%[SGPIO_REG_SS], #20]\n\t"
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"ldr r0, [%[p], #8]\n\t"
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"str r0, [%[SGPIO_REG_SS], #40]\n\t"
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"ldr r0, [%[p], #12]\n\t"
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"str r0, [%[SGPIO_REG_SS], #8]\n\t"
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"ldr r0, [%[p], #16]\n\t"
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"str r0, [%[SGPIO_REG_SS], #36]\n\t"
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"ldr r0, [%[p], #20]\n\t"
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"str r0, [%[SGPIO_REG_SS], #16]\n\t"
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"ldr r0, [%[p], #24]\n\t"
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"str r0, [%[SGPIO_REG_SS], #32]\n\t"
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"ldr r0, [%[p], #28]\n\t"
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"str r0, [%[SGPIO_REG_SS], #0]\n\t"
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:
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: [SGPIO_REG_SS] "l" (SGPIO_PORT_BASE + 0x100),
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[p] "l" (p)
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: "r0"
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);
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usb_bulk_buffer_offset = (usb_bulk_buffer_offset + 32) & usb_bulk_buffer_mask;
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}
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