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This commit is contained in:
furrtek
2016-01-31 09:34:24 +01:00
parent 29ec87a9ad
commit 44638e504b
166 changed files with 8700 additions and 3967 deletions
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39
firmware/baseband/proc_ais.cpp
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@@ -23,36 +23,28 @@
#include "portapack_shared_memory.hpp"
#include "i2s.hpp"
using namespace lpc43xx;
#include "dsp_fir_taps.hpp"
void AISProcessor::execute(buffer_c8_t buffer) {
AISProcessor::AISProcessor() {
decim_0.configure(taps_11k0_decim_0.taps, 33554432);
decim_1.configure(taps_11k0_decim_1.taps, 131072);
}
void AISProcessor::execute(const buffer_c8_t& buffer) {
/* 2.4576MHz, 2048 samples */
auto decimator_out = decimator.execute(buffer);
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
const auto decimator_out = decim_1_out;
/* 76.8kHz, 64 samples */
/* 38.4kHz, 32 samples */
feed_channel_stats(decimator_out);
/* No spectrum display while AIS decoding.
feed_channel_spectrum(
channel,
decimator_out.sampling_rate * channel_filter_taps.pass_frequency_normalized,
decimator_out.sampling_rate * channel_filter_taps.stop_frequency_normalized
);
*/
for(size_t i=0; i<decimator_out.count; i++) {
// TODO: No idea why implicit cast int16_t->float is not allowed.
const std::complex<float> sample {
static_cast<float>(decimator_out.p[i].real()),
static_cast<float>(decimator_out.p[i].imag())
};
if( mf.execute_once(sample) ) {
if( mf.execute_once(decimator_out.p[i]) ) {
clock_recovery(mf.get_output());
}
}
i2s::i2s0::tx_mute();
}
void AISProcessor::consume_symbol(
@@ -65,11 +57,8 @@ void AISProcessor::consume_symbol(
}
void AISProcessor::payload_handler(
const std::bitset<1024>& payload,
const size_t bits_received
const baseband::Packet& packet
) {
AISPacketMessage message;
message.packet.payload = payload;
message.packet.bits_received = bits_received;
const AISPacketMessage message { packet };
shared_memory.application_queue.push(message);
}