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LoRa Scanner: a MeshCore preset, and its packets read

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- MeshCore joins the presets (EU/UK Narrow: 869.618 MHz, 62.5 kHz, SF8,
  CR 4/8, sync 0x12), after the Meshtastic ones so stored choices keep
  their number; `lora preset MeshCore` on the console
- lib/meshcore reads what MeshCore sends in clear: header, path, and a
  node's advert (name, kind, key, position)
- the list row, the details, a Capture's viewer and the console echo read
  a packet by the sync word it was received on
- the bandwidth is printed as 62.5, not 62

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0162FokPdvY2KsS4NBfwyWPk
This commit is contained in:
twisla
2026-10-09 20:30:29 +02:00
co-authored by Claude Opus 5.5
parent 861a60b73d
commit 8ba41f72b6
23 changed files with 622 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/apps/file_viewer.cpp
+3 -4
View File
@@ -264,10 +264,9 @@ void FileViewer::openPacket(int index) {
if (tap) {
std::snprintf(line, sizeof line, "%.0f dBm, SNR %.1f dB, noise %.0f", rx.rssi, rx.snr, rx.noiseFloor);
details_.push_back(line);
std::snprintf(line, sizeof line, "%.4f MHz, SF%u, %.0f kHz", rx.frequencyHz / 1e6, rx.spreadingFactor, rx.bandwidthKHz);
std::snprintf(line, sizeof line, "%.4f MHz, SF%u, %g kHz", rx.frequencyHz / 1e6, rx.spreadingFactor, rx.bandwidthKHz);
details_.push_back(line);
if (rx.syncWord == meshtastic::kSyncWord)
for (auto& l : lora::headerLines(body + skip, have - skip)) details_.push_back(l);
for (auto& l : lora::headerLines(body + skip, have - skip, lora::protocolOf(rx.syncWord))) details_.push_back(l);
}
for (auto& l : lora::hexDump(body + skip, have - skip)) details_.push_back(l);
if (have < r.length) details_.push_back("(the first bytes only)");
@@ -391,7 +390,7 @@ void FileViewer::refresh() {
size_t have = std::min<size_t>(r.length, n - files::kPcapRecordSize);
if (tap && files::parseLoraTap(body, have, rx)) {
shown_.push_back(lora::row({body + lora::kLoraTapSize, have - lora::kLoraTapSize, rx.rssi, rx.snr, true,
rx.syncWord == meshtastic::kSyncWord},
lora::protocolOf(rx.syncWord)},
clockTime(r.seconds)));
} else {
shown_.push_back(clockTime(r.seconds) + " " + std::to_string(r.length) + " bytes");
src/apps/lora_scanner_app.cpp
+17 -15
View File
@@ -7,7 +7,7 @@
#include <cstdio>
#include <ctime>
#include "meshtastic_presets.h"
#include "scan_presets.h"
#include "packet_view.h"
#include "sweep_view.h"
#include "ui/canvas.h"
@@ -21,8 +21,8 @@ constexpr uint32_t kMessageMs = 4000;
}
void LoraScannerApp::onEnter() {
int i = std::clamp<int>(settings_.getInt(Setting::LoraPreset), 0, meshtastic::kEu868PresetCount - 1);
const meshtastic::Preset& p = meshtastic::kEu868Presets[i];
int i = std::clamp<int>(settings_.getInt(Setting::LoraPreset), 0, lora::scanPresetCount() - 1);
lora::ScanPreset p = lora::scanPreset(i);
if (std::string(radio_.config().name) != p.name) radio_.setPreset(p);
radio_.listen(RadioService::App, true);
view_ = View::Packets;
@@ -48,7 +48,7 @@ void LoraScannerApp::showSweep(bool on) {
requestRedraw();
}
bool LoraScannerApp::meshtasticSettings() const { return radio_.config().syncWord == meshtastic::kSyncWord; }
lora::Protocol LoraScannerApp::protocol() const { return lora::protocolOf(radio_.config().syncWord); }
void LoraScannerApp::say(const std::string& text) {
message_ = text;
@@ -83,8 +83,8 @@ bool LoraScannerApp::onKey(const KeyEvent& e) {
else if (e.key == Key::Select) {
int i = presets_.selected();
settings_.setInt(Setting::LoraPreset, i);
radio_.setPreset(meshtastic::kEu868Presets[i]);
say(std::string("Listening on ") + meshtastic::kEu868Presets[i].name);
radio_.setPreset(lora::scanPreset(i));
say(std::string("Listening on ") + lora::scanPreset(i).name);
view_ = View::Packets;
} else if (e.key == Key::Back) view_ = View::Packets;
else return true;
@@ -104,7 +104,7 @@ bool LoraScannerApp::onKey(const KeyEvent& e) {
return true;
}
if (e.key == Key::Char && (e.ch == 'p' || e.ch == 'P')) {
presets_.setCount(meshtastic::kEu868PresetCount);
presets_.setCount(lora::scanPresetCount());
presets_.select(settings_.getInt(Setting::LoraPreset));
view_ = View::Presets;
requestRedraw();
@@ -133,8 +133,8 @@ void LoraScannerApp::openDetails() {
details_.push_back(line);
std::snprintf(line, sizeof line, "%.4f MHz, off by %.0f Hz", p.rx.frequencyHz / 1e6, p.frequencyError);
details_.push_back(line);
if (meshtasticSettings())
for (auto& l : lora::headerLines(p.data, p.len)) details_.push_back(l);
if (p.crcOk)
for (auto& l : lora::headerLines(p.data, p.len, lora::protocolOf(p.rx.syncWord))) details_.push_back(l);
for (auto& l : lora::hexDump(p.data, p.len)) details_.push_back(l);
detailsTop_ = 0;
view_ = View::Details;
@@ -238,10 +238,12 @@ void LoraScannerApp::drawPackets(Canvas& c) {
c.setFont(&fonts::body);
c.setTextColor(theme::kMuted);
c.drawString("No packets yet.", 4, list.y + 4);
c.drawString(meshtasticSettings() ? "Meshtastic nodes in range show here." : "Custom settings.", 4,
lora::Protocol heard = protocol();
c.drawString(heard == lora::Protocol::Meshtastic ? "Meshtastic nodes in range show here."
: heard == lora::Protocol::MeshCore ? "MeshCore nodes in range show here." : "Custom settings.", 4,
list.y + 4 + theme::kLineHeight);
} else {
bool mesh = meshtasticSettings();
lora::Protocol mesh = protocol();
widgets::list(c, packets_, list, [&](int i) {
RadioPacket p;
if (!radio_.packet(newest - i, p)) return std::string("(gone)");
@@ -265,14 +267,14 @@ void LoraScannerApp::drawPresets(Canvas& c) {
const auto& area = theme::kContent;
c.setFont(&fonts::small);
c.setTextColor(theme::kMuted);
c.drawString("Meshtastic presets allowed in EU868", 4, area.y + 2);
c.drawString("Meshtastic in EU868, and MeshCore", 4, area.y + 2);
widgets::list(
c, presets_, {area.x, area.y + 12, area.w, (kListRows + 1) * theme::kLineHeight},
[](int i) { return std::string(meshtastic::kEu868Presets[i].name); },
[](int i) { return std::string(lora::scanPreset(i).name); },
[](int i) {
char v[24];
const auto& p = meshtastic::kEu868Presets[i];
std::snprintf(v, sizeof v, "SF%u %.0fk %.3f", p.sf, p.bwKHz, meshtastic::eu868FrequencyHz(p) / 1e6);
lora::ScanPreset p = lora::scanPreset(i);
std::snprintf(v, sizeof v, "SF%u %gk %.3f", p.sf, p.bwKHz, p.frequencyHz / 1e6);
return std::string(v);
});
}
src/apps/lora_scanner_app.h
+2 -2
View File
@@ -14,7 +14,7 @@
namespace roro {
// The LoRa Scanner (docs/milestones/M3.md). Sniffer: the packets the radio hears, newest first,
// with the Meshtastic header read (Q96) and a hex dump on Enter; p picks the preset (Q95), c starts
// with the Meshtastic or MeshCore header read (Q96) and a hex dump on Enter; p picks the preset (Q95), c starts
// or stops a Capture (Q97). The radio listens while the App is open (Q100). Tab: Sweep, the band's
// RSSI as bars with peak hold and a waterfall (Q98); it pauses the Sniffer while shown (Q99).
class LoraScannerApp : public App {
@@ -40,7 +40,7 @@ class LoraScannerApp : public App {
void showSweep(bool on);
void openDetails();
std::string timeOf(const RadioPacket& p) const;
bool meshtasticSettings() const;
lora::Protocol protocol() const; // whose packets the radio is set for
void say(const std::string& text); // a line in the footer for a few seconds
RadioService& radio_;