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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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69
firmware/baseband/proc_adsbtx.cpp
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@ -28,46 +28,45 @@
#include <cstdint>
void ADSBTXProcessor::execute(const buffer_c8_t& buffer) {
// This is called at 4M/2048 = 1953Hz
// One pulse = 500ns = 2 samples
// One bit = 2 pulses = 1us = 4 samples
// Test this with ./dump1090 --freq 434000000 --gain 20
// Or ./dump1090 --freq 434000000 --gain 20 --interactive --net --net-http-port 8080 --net-beast
if (!configured) return;
// This is called at 4M/2048 = 1953Hz
// One pulse = 500ns = 2 samples
// One bit = 2 pulses = 1us = 4 samples
// Test this with ./dump1090 --freq 434000000 --gain 20
// Or ./dump1090 --freq 434000000 --gain 20 --interactive --net --net-http-port 8080 --net-beast
for (size_t i = 0; i < buffer.count; i++) {
if (bit_pos >= (240 << 1)) {
configured = false;
cur_bit = 0;
} else {
cur_bit = shared_memory.bb_data.data[bit_pos >> 1];
bit_pos++;
}
if (cur_bit) {
// Crude AM
buffer.p[i] = am_lut[phase & 3];
phase++;
} else {
buffer.p[i] = { 0, 0 };
}
}
if (!configured) return;
for (size_t i = 0; i < buffer.count; i++) {
if (bit_pos >= (240 << 1)) {
configured = false;
cur_bit = 0;
} else {
cur_bit = shared_memory.bb_data.data[bit_pos >> 1];
bit_pos++;
}
if (cur_bit) {
// Crude AM
buffer.p[i] = am_lut[phase & 3];
phase++;
} else {
buffer.p[i] = {0, 0};
}
}
}
void ADSBTXProcessor::on_message(const Message* const p) {
const auto message = *reinterpret_cast<const ADSBConfigureMessage*>(p);
if (message.id == Message::ID::ADSBConfigure) {
bit_pos = 0;
phase = 0;
configured = true;
}
const auto message = *reinterpret_cast<const ADSBConfigureMessage*>(p);
if (message.id == Message::ID::ADSBConfigure) {
bit_pos = 0;
phase = 0;
configured = true;
}
}
int main() {
EventDispatcher event_dispatcher { std::make_unique<ADSBTXProcessor>() };
event_dispatcher.run();
return 0;
EventDispatcher event_dispatcher{std::make_unique<ADSBTXProcessor>()};
event_dispatcher.run();
return 0;
}