mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-14 20:18:13 +00:00
8b02e40602
...so it continues when M4 is shut down. It's not as pretty as using DMA, but it's far simpler, even if it involves letting the ADC run continuously and taking the last samples even if not synchronizing to the phase of the sampling of the channels.
109 lines
2.3 KiB
C++
Executable File
109 lines
2.3 KiB
C++
Executable File
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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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 "ch.h"
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#include "lpc43xx_cpp.hpp"
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#include "portapack_shared_memory.hpp"
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#include "portapack_dma.hpp"
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#include "gpdma.hpp"
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#include "message_queue.hpp"
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#include "utility.hpp"
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#include "debug.hpp"
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#include "audio_dma.hpp"
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#include "gcc.hpp"
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#include <cstdint>
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#include <cstddef>
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#include <array>
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extern "C" {
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void __late_init(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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/* After this call, scheduler, systick, heap, etc. are available. */
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/* By doing chSysInit() here, it runs before C++ constructors, which may
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* require the heap.
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*/
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chSysInit();
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}
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}
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static void init() {
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audio::dma::init();
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audio::dma::configure();
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audio::dma::enable();
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LPC_CREG->DMAMUX = portapack::gpdma_mux;
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gpdma::controller.enable();
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nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
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}
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extern void run();
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static void halt() {
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port_disable();
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while(true) {
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port_wait_for_interrupt();
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}
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}
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static void shutdown() {
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// TODO: Is this complete?
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nvicDisableVector(DMA_IRQn);
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chSysDisable();
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systick_stop();
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ShutdownMessage shutdown_message;
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shared_memory.application_queue.push(shutdown_message);
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shared_memory.baseband_message = nullptr;
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halt();
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}
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int main(void) {
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init();
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run();
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shutdown();
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return 0;
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}
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