Public Access
twislaandClaude Opus 5.5
3242475699
The 16-byte clear header (hops away, channel hash, relay node), the EU_868 presets and their frequency slots, and the channel hash, all checked against Meshtastic's source. Captures are pcap with LoRaTap v0, read back with TShark 4.2.5; packet RSSI is plain dBm, as Wireshark reads it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
29 lines
755 B
C++
29 lines
755 B
C++
#include "meshtastic_header.h"
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#include <cstdio>
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namespace roro::meshtastic {
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static uint32_t le32(const uint8_t* p) { return p[0] | p[1] << 8 | p[2] << 16 | static_cast<uint32_t>(p[3]) << 24; }
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bool parseHeader(const uint8_t* data, size_t len, PacketHeader& out) {
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if (!data || len < kHeaderSize) return false;
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out.to = le32(data);
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out.from = le32(data + 4);
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out.id = le32(data + 8);
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out.flags = data[12];
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out.channelHash = data[13];
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out.nextHop = data[14];
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out.relayNode = data[15];
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return true;
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}
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std::string nodeId(uint32_t node) {
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if (node == kBroadcast) return "all";
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char s[10];
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std::snprintf(s, sizeof s, "!%08x", static_cast<unsigned>(node));
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return s;
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}
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} // namespace roro::meshtastic
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