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jLynx 2023-05-19 08:16:05 +12:00 • committed by GitHub
parent 7aca7ce74d
commit 033c4e9a5b
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599 changed files with 70746 additions and 66896 deletions
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124
firmware/baseband/proc_ert.cpp
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@ -26,94 +26,90 @@
#include "event_m4.hpp"
float ERTProcessor::abs(const complex8_t& v) {
// const int16_t r = v.real() - offset_i;
// const int16_t i = v.imag() - offset_q;
// const uint32_t r2 = r * r;
// const uint32_t i2 = i * i;
// const uint32_t r2_i2 = r2 + i2;
// return std::sqrt(static_cast<float>(r2_i2));
const float r = static_cast<float>(v.real()) - offset_i;
const float i = static_cast<float>(v.imag()) - offset_q;
const float r2 = r * r;
const float i2 = i * i;
const float r2_i2 = r2 + i2;
return std::sqrt(r2_i2);
// const int16_t r = v.real() - offset_i;
// const int16_t i = v.imag() - offset_q;
// const uint32_t r2 = r * r;
// const uint32_t i2 = i * i;
// const uint32_t r2_i2 = r2 + i2;
// return std::sqrt(static_cast<float>(r2_i2));
const float r = static_cast<float>(v.real()) - offset_i;
const float i = static_cast<float>(v.imag()) - offset_q;
const float r2 = r * r;
const float i2 = i * i;
const float r2_i2 = r2 + i2;
return std::sqrt(r2_i2);
}
void ERTProcessor::execute(const buffer_c8_t& buffer) {
/* 4.194304MHz, 2048 samples */
/* 4.194304MHz, 2048 samples */
const complex8_t* src = &buffer.p[0];
const complex8_t* const src_end = &buffer.p[buffer.count];
const complex8_t* src = &buffer.p[0];
const complex8_t* const src_end = &buffer.p[buffer.count];
average_i += src->real();
average_q += src->imag();
average_count++;
if( average_count == average_window ) {
offset_i = static_cast<float>(average_i) / average_window;
offset_q = static_cast<float>(average_q) / average_window;
average_i = 0;
average_q = 0;
average_count = 0;
}
average_i += src->real();
average_q += src->imag();
average_count++;
if (average_count == average_window) {
offset_i = static_cast<float>(average_i) / average_window;
offset_q = static_cast<float>(average_q) / average_window;
average_i = 0;
average_q = 0;
average_count = 0;
}
const float gain = 128 * samples_per_symbol;
const float k = 1.0f / gain;
const float gain = 128 * samples_per_symbol;
const float k = 1.0f / gain;
while(src < src_end) {
float sum = 0.0f;
for(size_t i=0; i<(samples_per_symbol / 2); i++) {
sum += abs(*(src++));
}
sum_half_period[1] = sum_half_period[0];
sum_half_period[0] = sum;
while (src < src_end) {
float sum = 0.0f;
for (size_t i = 0; i < (samples_per_symbol / 2); i++) {
sum += abs(*(src++));
}
sum_half_period[1] = sum_half_period[0];
sum_half_period[0] = sum;
sum_period[2] = sum_period[1];
sum_period[1] = sum_period[0];
sum_period[0] = (sum_half_period[0] + sum_half_period[1]) * k;
sum_period[2] = sum_period[1];
sum_period[1] = sum_period[0];
sum_period[0] = (sum_half_period[0] + sum_half_period[1]) * k;
manchester[2] = manchester[1];
manchester[1] = manchester[0];
manchester[0] = sum_period[2] - sum_period[0];
manchester[2] = manchester[1];
manchester[1] = manchester[0];
manchester[0] = sum_period[2] - sum_period[0];
const auto data = manchester[0] - manchester[2];
const auto data = manchester[0] - manchester[2];
clock_recovery(data);
}
clock_recovery(data);
}
}
void ERTProcessor::consume_symbol(
const float raw_symbol
) {
const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
scm_builder.execute(sliced_symbol);
scmplus_builder.execute(sliced_symbol);
idm_builder.execute(sliced_symbol);
const float raw_symbol) {
const uint_fast8_t sliced_symbol = (raw_symbol >= 0.0f) ? 1 : 0;
scm_builder.execute(sliced_symbol);
scmplus_builder.execute(sliced_symbol);
idm_builder.execute(sliced_symbol);
}
void ERTProcessor::scm_handler(
const baseband::Packet& packet
) {
const ERTPacketMessage message { ert::Packet::Type::SCM, packet };
shared_memory.application_queue.push(message);
const baseband::Packet& packet) {
const ERTPacketMessage message{ert::Packet::Type::SCM, packet};
shared_memory.application_queue.push(message);
}
void ERTProcessor::scmplus_handler(
const baseband::Packet& packet
) {
const ERTPacketMessage message { ert::Packet::Type::SCMPLUS, packet };
shared_memory.application_queue.push(message);
const baseband::Packet& packet) {
const ERTPacketMessage message{ert::Packet::Type::SCMPLUS, packet};
shared_memory.application_queue.push(message);
}
void ERTProcessor::idm_handler(
const baseband::Packet& packet
) {
const ERTPacketMessage message { ert::Packet::Type::IDM, packet };
shared_memory.application_queue.push(message);
const baseband::Packet& packet) {
const ERTPacketMessage message{ert::Packet::Type::IDM, packet};
shared_memory.application_queue.push(message);
}
int main() {
EventDispatcher event_dispatcher { std::make_unique<ERTProcessor>() };
event_dispatcher.run();
return 0;
EventDispatcher event_dispatcher{std::make_unique<ERTProcessor>()};
event_dispatcher.run();
return 0;
}