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/*
* Copyright 2012 Jared Boone
* Copyright 2013 Benjamin Vernoux
*
* This file is part of HackRF.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "sgpio_isr.h"
#include <libopencm3/lpc43xx/sgpio.h>
#include "usb_bulk_buffer.h"
void sgpio_isr_rx() {
SGPIO_CLR_STATUS_1 = (1 << SGPIO_SLICE_A);
uint32_t* const p = (uint32_t*)&usb_bulk_buffer[usb_bulk_buffer_offset];
__asm__(
"ldr r0, [%[SGPIO_REG_SS], #44]\n\t"
"str r0, [%[p], #0]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #20]\n\t"
"str r0, [%[p], #4]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #40]\n\t"
"str r0, [%[p], #8]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #8]\n\t"
"str r0, [%[p], #12]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #36]\n\t"
"str r0, [%[p], #16]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #16]\n\t"
"str r0, [%[p], #20]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #32]\n\t"
"str r0, [%[p], #24]\n\t"
"ldr r0, [%[SGPIO_REG_SS], #0]\n\t"
"str r0, [%[p], #28]\n\t"
:
: [SGPIO_REG_SS] "l" (SGPIO_PORT_BASE + 0x100),
[p] "l" (p)
: "r0"
);
usb_bulk_buffer_offset = (usb_bulk_buffer_offset + 32) & usb_bulk_buffer_mask;
}
void sgpio_isr_tx() {
SGPIO_CLR_STATUS_1 = (1 << SGPIO_SLICE_A);
uint32_t* const p = (uint32_t*)&usb_bulk_buffer[usb_bulk_buffer_offset];
__asm__(
"ldr r0, [%[p], #0]\n\t"
"str r0, [%[SGPIO_REG_SS], #44]\n\t"
"ldr r0, [%[p], #4]\n\t"
"str r0, [%[SGPIO_REG_SS], #20]\n\t"
"ldr r0, [%[p], #8]\n\t"
"str r0, [%[SGPIO_REG_SS], #40]\n\t"
"ldr r0, [%[p], #12]\n\t"
"str r0, [%[SGPIO_REG_SS], #8]\n\t"
"ldr r0, [%[p], #16]\n\t"
"str r0, [%[SGPIO_REG_SS], #36]\n\t"
"ldr r0, [%[p], #20]\n\t"
"str r0, [%[SGPIO_REG_SS], #16]\n\t"
"ldr r0, [%[p], #24]\n\t"
"str r0, [%[SGPIO_REG_SS], #32]\n\t"
"ldr r0, [%[p], #28]\n\t"
"str r0, [%[SGPIO_REG_SS], #0]\n\t"
:
: [SGPIO_REG_SS] "l" (SGPIO_PORT_BASE + 0x100),
[p] "l" (p)
: "r0"
);
usb_bulk_buffer_offset = (usb_bulk_buffer_offset + 32) & usb_bulk_buffer_mask;
}
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