deuxyeux/RTNode-HeltecV4
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v1.0.23: Show node public hash in WiFi config portal

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Add Reticulum destination hash indicator at the top of the captive-portal
config page so users can identify the device.

- Store the 32-char hex destination hash in RTC_NOINIT memory after RNS
  starts on a normal boot (survives software reboots into config mode)
- BoundaryConfig.h reads the RTC value and renders a styled hash box at
  the top of the HTML page, above the config form
- Falls back to a friendly placeholder if the device has never completed
  a normal boot (hash not yet assigned)
- Rebuild precompiled firmware for Heltec V3 and V4 boundary variants
This commit is contained in:
James L
2026-03-20 23:08:03 -04:00
parent b3b6cd4302
commit 3157b8e4a8
4 changed files with 38 additions and 2 deletions
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22
BoundaryConfig.h
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@@ -24,6 +24,11 @@
#include <WebServer.h> #include <WebServer.h>
#include <DNSServer.h> #include <DNSServer.h>
// ─── Node hash (cached in RTC by normal boot, read here without starting RNS) ─
#define NODE_HASH_RTC_MAGIC 0x504B4841UL
extern uint32_t rtc_node_hash_magic;
extern char rtc_node_hash_hex[33];
// ─── Config Portal State ───────────────────────────────────────────────────── // ─── Config Portal State ─────────────────────────────────────────────────────
static bool config_portal_active = false; static bool config_portal_active = false;
static WebServer* config_server = nullptr; static WebServer* config_server = nullptr;
@@ -126,12 +131,25 @@ static void config_send_html() {
"button:hover{background:#c73e54;}" "button:hover{background:#c73e54;}"
".ok{background:#16213e;padding:20px;border-radius:8px;text-align:center;}" ".ok{background:#16213e;padding:20px;border-radius:8px;text-align:center;}"
".ok h1{color:#0f0;}" ".ok h1{color:#0f0;}"
".node-hash{background:#0f1a30;border:1px solid #0f3460;border-radius:6px;"
"padding:10px 14px;margin:0 0 16px;}"
".node-hash .nh-label{display:block;font-size:0.75em;color:#888;margin-bottom:4px;}"
".node-hash code{font-family:monospace;font-size:0.95em;color:#7ecfff;"
"word-break:break-all;letter-spacing:0.05em;}"
"</style></head><body>" "</style></head><body>"
"<h1>&#x1f4e1; RNode Boundary Node</h1>" "<h1>&#x1f4e1; RNode Boundary Node</h1>"
"<form method='POST' action='/save'>"
); );
// ── WiFi STA Section ── // ── Node public hash ──
html += F("<div class='node-hash'><span class='nh-label'>&#x1f511; Node Hash (Reticulum destination)</span><code>");
if (rtc_node_hash_magic == NODE_HASH_RTC_MAGIC && rtc_node_hash_hex[0] != '\0') {
html += String(rtc_node_hash_hex);
} else {
html += F("<span style='color:#888;font-style:italic;'>Not yet assigned &mdash; will be set on first normal boot</span>");
}
html += F("</code></div>");
html += F("<form method='POST' action='/save'>");
html += F( html += F(
"<h2>&#x1f4f6; WiFi Network</h2>" "<h2>&#x1f4f6; WiFi Network</h2>"
"<label>WiFi</label>" "<label>WiFi</label>"

18
RNode_Firmware.ino
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@@ -259,6 +259,13 @@ RTC_NOINIT_ATTR uint32_t boundary_skip_config;
RTC_NOINIT_ATTR uint32_t bootloop_magic; RTC_NOINIT_ATTR uint32_t bootloop_magic;
RTC_NOINIT_ATTR uint32_t bootloop_count; RTC_NOINIT_ATTR uint32_t bootloop_count;
RTC_NOINIT_ATTR uint32_t bootloop_first_boot_ms; RTC_NOINIT_ATTR uint32_t bootloop_first_boot_ms;
// Node public hash — cached in RTC so the config portal can display it without
// needing to start RNS. Populated after the transport destination is created
// on a normal boot; survives software reboots into the captive portal.
#define NODE_HASH_RTC_MAGIC 0x504B4841UL // "PKHA"
RTC_NOINIT_ATTR uint32_t rtc_node_hash_magic;
RTC_NOINIT_ATTR char rtc_node_hash_hex[33]; // 32 hex chars + NUL
#endif #endif
#endif // HAS_RNS #endif // HAS_RNS
@@ -927,6 +934,17 @@ void setup() {
*/ */
RNS::Destination destination(RNS::Transport::identity(), RNS::Type::Destination::IN, RNS::Type::Destination::SINGLE, "rnstransport", "local"); RNS::Destination destination(RNS::Transport::identity(), RNS::Type::Destination::IN, RNS::Type::Destination::SINGLE, "rnstransport", "local");
// Cache this node's destination hash in RTC memory so the captive-portal
// config page can show it without needing RNS to be running.
{
std::string h = destination.hash().toHex();
size_t len = h.length();
if (len > 32) len = 32;
memcpy(rtc_node_hash_hex, h.c_str(), len);
rtc_node_hash_hex[len] = '\0';
rtc_node_hash_magic = NODE_HASH_RTC_MAGIC;
}
HEAD("RNS is READY!", RNS::LOG_TRACE); HEAD("RNS is READY!", RNS::LOG_TRACE);
#ifdef BOUNDARY_MODE #ifdef BOUNDARY_MODE
HEAD("*** BOUNDARY MODE ACTIVE ***", RNS::LOG_TRACE); HEAD("*** BOUNDARY MODE ACTIVE ***", RNS::LOG_TRACE);

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Release/rnode_firmware_heltec32v3.bin
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Release/rnode_firmware_heltec32v4_boundary.bin
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