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Add GPDMA API. Should go in libopencm3 when it's more fleshed-out.

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This commit is contained in:
Jared Boone
2013-12-07 15:28:59 -08:00
parent 5468a01a9b
commit 3e7ff530d7
2 changed files with 81 additions and 0 deletions
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46
firmware/common/gpdma.c Normal file
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/*
* Copyright 2013 Jared Boone <jared@sharebrained.com>
*
* 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 <gpdma.h>
#include <libopencm3/lpc43xx/gpdma.h>
void gpdma_controller_enable() {
GPDMA_CONFIG |= GPDMA_CONFIG_E(1);
while( (GPDMA_CONFIG & GPDMA_CONFIG_E_MASK) == 0 );
}
void gpdma_channel_enable(const uint_fast8_t channel) {
GPDMA_CCONFIG(channel) |= GPDMA_CCONFIG_E(1);
}
void gpdma_channel_disable(const uint_fast8_t channel) {
GPDMA_CCONFIG(channel) &= ~GPDMA_CCONFIG_E_MASK;
while( (GPDMA_ENBLDCHNS & GPDMA_ENBLDCHNS_ENABLEDCHANNELS(1 << channel)) );
}
void gpdma_channel_interrupt_tc_clear(const uint_fast8_t channel) {
GPDMA_INTTCCLEAR = GPDMA_INTTCCLEAR_INTTCCLEAR(1 << channel);
}
void gpdma_channel_interrupt_error_clear(const uint_fast8_t channel) {
GPDMA_INTERRCLR = GPDMA_INTERRCLR_INTERRCLR(1 << channel);
}

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firmware/common/gpdma.h Normal file
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/*
* Copyright 2013 Jared Boone <jared@sharebrained.com>
*
* 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.
*/
#ifndef __GPDMA_H__
#define __GPDMA_H__
#include <stdint.h>
void gpdma_controller_enable();
void gpdma_channel_enable(const uint_fast8_t channel);
void gpdma_channel_disable(const uint_fast8_t channel);
void gpdma_channel_interrupt_tc_clear(const uint_fast8_t channel);
void gpdma_channel_interrupt_error_clear(const uint_fast8_t channel);
#endif/*__GPDMA_H__*/