portapack-mayhem/firmware/baseband/main.cpp
2015-11-11 10:54:36 -08:00

423 lines
8.8 KiB
C++
Executable File

/*
* 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 "ch.h"
#include "test.h"
#include "lpc43xx_cpp.hpp"
#include "portapack_shared_memory.hpp"
#include "portapack_dma.hpp"
#include "gpdma.hpp"
#include "baseband_dma.hpp"
#include "event_m4.hpp"
#include "irq_ipc_m4.hpp"
#include "rssi.hpp"
#include "rssi_dma.hpp"
#include "touch_dma.hpp"
#include "dsp_decimate.hpp"
#include "dsp_demodulate.hpp"
#include "dsp_fir_taps.hpp"
#include "dsp_iir.hpp"
#include "dsp_iir_config.hpp"
#include "dsp_squelch.hpp"
#include "baseband_stats_collector.hpp"
#include "rssi_stats_collector.hpp"
#include "channel_decimator.hpp"
#include "baseband_processor.hpp"
#include "proc_am_audio.hpp"
#include "proc_nfm_audio.hpp"
#include "proc_wfm_audio.hpp"
#include "proc_ais.hpp"
#include "proc_wideband_spectrum.hpp"
#include "proc_tpms.hpp"
#include "clock_recovery.hpp"
#include "packet_builder.hpp"
#include "message_queue.hpp"
#include "utility.hpp"
#include "debug.hpp"
#include "audio.hpp"
#include "audio_dma.hpp"
#include "gcc.hpp"
#include <cstdint>
#include <cstddef>
#include <array>
#include <string>
#include <bitset>
class ThreadBase {
public:
constexpr ThreadBase(
const char* const name
) : name { name }
{
}
static msg_t fn(void* arg) {
auto obj = static_cast<ThreadBase*>(arg);
chRegSetThreadName(obj->name);
obj->run();
return 0;
}
virtual void run() = 0;
private:
const char* const name;
};
class BasebandThread : public ThreadBase {
public:
BasebandThread(
) : ThreadBase { "baseband" }
{
}
Thread* start(const tprio_t priority) {
return chThdCreateStatic(wa, sizeof(wa),
priority, ThreadBase::fn,
this
);
}
Thread* thread_main { nullptr };
Thread* thread_rssi { nullptr };
BasebandProcessor* baseband_processor { nullptr };
BasebandConfiguration baseband_configuration;
private:
WORKING_AREA(wa, 2048);
void run() override {
BasebandStatsCollector stats {
chSysGetIdleThread(),
thread_main,
thread_rssi,
chThdSelf()
};
while(true) {
// TODO: Place correct sampling rate into buffer returned here:
const auto buffer_tmp = baseband::dma::wait_for_rx_buffer();
const buffer_c8_t buffer {
buffer_tmp.p, buffer_tmp.count, baseband_configuration.sampling_rate
};
if( baseband_processor ) {
baseband_processor->execute(buffer);
}
stats.process(buffer,
[](const BasebandStatistics statistics) {
const BasebandStatisticsMessage message { statistics };
shared_memory.application_queue.push(message);
}
);
}
}
};
class RSSIThread : public ThreadBase {
public:
RSSIThread(
) : ThreadBase { "rssi" }
{
}
Thread* start(const tprio_t priority) {
return chThdCreateStatic(wa, sizeof(wa),
priority, ThreadBase::fn,
this
);
}
uint32_t sampling_rate { 400000 };
private:
WORKING_AREA(wa, 128);
void run() override {
RSSIStatisticsCollector stats;
while(true) {
// TODO: Place correct sampling rate into buffer returned here:
const auto buffer_tmp = rf::rssi::dma::wait_for_buffer();
const rf::rssi::buffer_t buffer {
buffer_tmp.p, buffer_tmp.count, sampling_rate
};
stats.process(
buffer,
[](const RSSIStatistics statistics) {
const RSSIStatisticsMessage message { statistics };
shared_memory.application_queue.push(message);
}
);
}
}
};
extern "C" {
void __late_init(void) {
/*
* System initializations.
* - HAL initialization, this also initializes the configured device drivers
* and performs the board-specific initializations.
* - Kernel initialization, the main() function becomes a thread and the
* RTOS is active.
*/
halInit();
/* After this call, scheduler, systick, heap, etc. are available. */
/* By doing chSysInit() here, it runs before C++ constructors, which may
* require the heap.
*/
chSysInit();
}
}
static BasebandThread baseband_thread;
static RSSIThread rssi_thread;
static void init() {
i2s::i2s0::configure(
audio::i2s0_config_tx,
audio::i2s0_config_rx,
audio::i2s0_config_dma
);
audio::dma::init();
audio::dma::configure();
audio::dma::enable();
i2s::i2s0::tx_start();
i2s::i2s0::rx_start();
LPC_CREG->DMAMUX = portapack::gpdma_mux;
gpdma::controller.enable();
nvicEnableVector(DMA_IRQn, CORTEX_PRIORITY_MASK(LPC_DMA_IRQ_PRIORITY));
baseband::dma::init();
rf::rssi::init();
touch::dma::init();
const auto thread_main = chThdSelf();
const auto thread_rssi = rssi_thread.start(NORMALPRIO + 10);
baseband_thread.thread_main = thread_main;
baseband_thread.thread_rssi = thread_rssi;
baseband_thread.start(NORMALPRIO + 20);
}
static void shutdown() {
// TODO: Is this complete?
nvicDisableVector(DMA_IRQn);
m0apptxevent_interrupt_disable();
chSysDisable();
systick_stop();
}
static void halt() {
port_disable();
while(true) {
port_wait_for_interrupt();
}
}
class EventDispatcher {
public:
MessageHandlerMap& message_handlers() {
return message_map;
}
void run() {
while(is_running) {
const auto events = wait();
dispatch(events);
}
}
void request_stop() {
is_running = false;
}
private:
MessageHandlerMap message_map;
bool is_running = true;
eventmask_t wait() {
return chEvtWaitAny(ALL_EVENTS);
}
void dispatch(const eventmask_t events) {
if( events & EVT_MASK_BASEBAND ) {
handle_baseband_queue();
}
if( events & EVT_MASK_SPECTRUM ) {
handle_spectrum();
}
}
void handle_baseband_queue() {
std::array<uint8_t, Message::MAX_SIZE> message_buffer;
while(Message* const message = shared_memory.baseband_queue.pop(message_buffer)) {
message_map.send(message);
}
}
void handle_spectrum() {
if( baseband_thread.baseband_processor ) {
baseband_thread.baseband_processor->update_spectrum();
}
}
};
static constexpr auto direction = baseband::Direction::Receive;
int main(void) {
init();
events_initialize(chThdSelf());
m0apptxevent_interrupt_enable();
EventDispatcher event_dispatcher;
auto& message_handlers = event_dispatcher.message_handlers();
message_handlers.register_handler(Message::ID::BasebandConfiguration,
[&message_handlers](const Message* const p) {
auto message = reinterpret_cast<const BasebandConfigurationMessage*>(p);
if( message->configuration.mode != baseband_thread.baseband_configuration.mode ) {
if( baseband_thread.baseband_processor ) {
i2s::i2s0::tx_mute();
baseband::dma::disable();
rf::rssi::stop();
}
// TODO: Timing problem around disabling DMA and nulling and deleting old processor
auto old_p = baseband_thread.baseband_processor;
baseband_thread.baseband_processor = nullptr;
delete old_p;
switch(message->configuration.mode) {
case 0:
baseband_thread.baseband_processor = new NarrowbandAMAudio();
break;
case 1:
baseband_thread.baseband_processor = new NarrowbandFMAudio();
break;
case 2:
baseband_thread.baseband_processor = new WidebandFMAudio();
break;
case 3:
baseband_thread.baseband_processor = new AISProcessor();
break;
case 4:
baseband_thread.baseband_processor = new WidebandSpectrum();
break;
case 5:
baseband_thread.baseband_processor = new TPMSProcessor();
break;
default:
break;
}
if( baseband_thread.baseband_processor ) {
if( direction == baseband::Direction::Receive ) {
rf::rssi::start();
}
baseband::dma::enable(direction);
}
}
baseband_thread.baseband_configuration = message->configuration;
}
);
message_handlers.register_handler(Message::ID::Shutdown,
[&event_dispatcher](const Message* const) {
event_dispatcher.request_stop();
}
);
/* TODO: Ensure DMAs are configured to point at first LLI in chain. */
if( direction == baseband::Direction::Receive ) {
rf::rssi::dma::allocate(4, 400);
}
touch::dma::allocate();
touch::dma::enable();
const auto baseband_buffer =
new std::array<baseband::sample_t, 8192>();
baseband::dma::configure(
baseband_buffer->data(),
direction
);
//baseband::dma::allocate(4, 2048);
event_dispatcher.run();
shutdown();
ShutdownMessage shutdown_message;
shared_memory.application_queue.push(shutdown_message);
halt();
return 0;
}