mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-30 09:46:32 -05:00
033c4e9a5b
* Updated style * Updated files * fixed new line * Updated spacing * File fix WIP * Updated to clang 13 * updated comment style * Removed old comment code
112 lines
2.8 KiB
C++
112 lines
2.8 KiB
C++
/*
|
|
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* 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.hpp"
|
|
|
|
#include <array>
|
|
|
|
namespace lpc43xx {
|
|
namespace gpdma {
|
|
|
|
namespace {
|
|
|
|
struct ChannelHandlers {
|
|
TCHandler tc;
|
|
ErrHandler err;
|
|
|
|
constexpr ChannelHandlers()
|
|
: tc(nullptr),
|
|
err(nullptr) {
|
|
}
|
|
};
|
|
|
|
} // namespace
|
|
|
|
static std::array<ChannelHandlers, channels.size()> handlers_table{{}};
|
|
|
|
namespace channel {
|
|
|
|
void Channel::set_handlers(const TCHandler tc_handler, const ErrHandler err_handler) const {
|
|
handlers_table[number].tc = tc_handler;
|
|
handlers_table[number].err = err_handler;
|
|
}
|
|
|
|
void Channel::configure(
|
|
const LLI& first_lli,
|
|
const uint32_t config) const {
|
|
disable();
|
|
clear_interrupts();
|
|
|
|
LPC_GPDMA_Channel_Type* const channel = &LPC_GPDMA->CH[number];
|
|
channel->SRCADDR = first_lli.srcaddr;
|
|
channel->DESTADDR = first_lli.destaddr;
|
|
channel->LLI = first_lli.lli;
|
|
channel->CONTROL = first_lli.control;
|
|
channel->CONFIG = config;
|
|
}
|
|
|
|
} /* namespace channel */
|
|
|
|
extern "C" {
|
|
|
|
CH_IRQ_HANDLER(DMA_IRQHandler) {
|
|
CH_IRQ_PROLOGUE();
|
|
|
|
chSysLockFromIsr();
|
|
|
|
const auto tc_stat = LPC_GPDMA->INTTCSTAT;
|
|
/* TODO: Service the higher channel numbers first, they're higher priority
|
|
* right?!?
|
|
*/
|
|
for (size_t i = 0; i < handlers_table.size(); i++) {
|
|
if ((tc_stat >> i) & 1) {
|
|
if (handlers_table[i].tc) {
|
|
handlers_table[i].tc();
|
|
}
|
|
}
|
|
}
|
|
LPC_GPDMA->INTTCCLR = tc_stat;
|
|
|
|
/* Test for *any* error first, before looping, since errors should be
|
|
* exceptional and we should spend as little time on them in the common
|
|
* case.
|
|
*/
|
|
const auto err_stat = LPC_GPDMA->INTERRSTAT;
|
|
if (err_stat) {
|
|
for (size_t i = 0; i < handlers_table.size(); i++) {
|
|
if ((err_stat >> i) & 1) {
|
|
if (handlers_table[i].err) {
|
|
handlers_table[i].err();
|
|
}
|
|
}
|
|
}
|
|
LPC_GPDMA->INTERRCLR = err_stat;
|
|
}
|
|
|
|
chSysUnlockFromIsr();
|
|
|
|
CH_IRQ_EPILOGUE();
|
|
}
|
|
}
|
|
|
|
} /* namespace gpdma */
|
|
} /* namespace lpc43xx */
|