Remove auto-reboot and make timezone configurable

README.md

@@ -9,7 +9,9 @@ Firmware for LilyGO T3 v1.6.1 (`ESP32 + SX1276 + SSD1306`) that runs as either:
 - Single codebase, role selected at boot via `detect_role()` (`include/config.h`, `src/config.cpp`).
 - LoRa link uses explicit CRC16 frame protection in firmware (`src/lora_transport.cpp`).
 - Sender batches up to `30` samples and retries on missing ACK (`BATCH_MAX_RETRIES=2`, retry policy `Keep`).
+- Sender meter parsing is decoupled from LoRa ACK waits using a dedicated FreeRTOS reader task + queue (`src/main.cpp`).
 - Receiver uses STA mode when config is valid, otherwise AP fallback with web config.
+- No debug auto-reboot timer is active in normal firmware loops.
 
 ## LoRa Frame Protocol (Current)
 
@@ -54,12 +56,18 @@ Only after valid ACK time is received:
 
 This blocks pre-threshold timestamps from MQTT/SD paths.
 
+Timezone handling:
+- Local time rendering uses `TIMEZONE_TZ` from `include/config.h`.
+- Default value is `CET-1CEST,M3.5.0/2,M10.5.0/3` and can be changed at compile time.
+
 ## Sender Meter Path
 
 Implemented in `src/meter_driver.cpp` + sender loop in `src/main.cpp`:
 
 - UART: `Serial2`, RX pin `GPIO34` (`PIN_METER_RX`), `9600 7E1`
-- Frame detection: starts at `'/'`, ends at `'!'`, timeout protection included
+- ESP32 RX buffer is enlarged to `8192` bytes to survive long LoRa blocking sections.
+- Frame detection: starts at `'/'`, ends at `'!'`, timeout protection included (`METER_FRAME_TIMEOUT_MS=20000`).
+- Parsing runs in a dedicated sender task and is handed to the main sender loop via queue.
 - Parsed OBIS values:
   - `1-0:1.8.0` (total energy)
   - `1-0:16.7.0` (total power)

include/config.h

@@ -79,6 +79,7 @@ constexpr uint16_t SD_HISTORY_MAX_DAYS = 30;
 constexpr uint16_t SD_HISTORY_MIN_RES_MIN = 1;
 constexpr uint16_t SD_HISTORY_MAX_BINS = 4000;
 constexpr uint16_t SD_HISTORY_TIME_BUDGET_MS = 10;
+constexpr const char *TIMEZONE_TZ = "CET-1CEST,M3.5.0/2,M10.5.0/3";
 constexpr const char *AP_SSID_PREFIX = "DD3-Bridge-";
 constexpr const char *AP_PASSWORD = "changeme123";
 constexpr bool WEB_AUTH_REQUIRE_STA = true;

src/main.cpp

@@ -29,8 +29,6 @@ static char g_device_id[16] = "";
 static SenderStatus g_sender_statuses[NUM_SENDERS];
 static bool g_ap_mode = false;
 static WifiMqttConfig g_cfg;
-static uint32_t g_boot_ms = 0;
-static bool g_debug_forced_reboot_done = false;
 static FaultCounters g_sender_faults = {};
 static FaultCounters g_receiver_faults = {};
 static FaultCounters g_receiver_faults_published = {};
@@ -121,7 +119,6 @@ static constexpr uint32_t METER_READER_TASK_STACK_WORDS = 4096;
 static constexpr UBaseType_t METER_READER_TASK_PRIORITY = 2;
 static constexpr BaseType_t METER_READER_TASK_CORE = 0;
 #endif
-static constexpr uint32_t DEBUG_FORCED_REBOOT_INTERVAL_MS = 3UL * 60UL * 60UL * 1000UL;
 
 enum class TxBuildError : uint8_t {
   None = 0,
@@ -937,7 +934,6 @@ void setup() {
 #endif
 
   watchdog_init();
-  g_boot_ms = millis();
   g_role = detect_role();
   init_device_ids(g_short_id, g_device_id, sizeof(g_device_id));
   display_set_role(g_role);
@@ -1364,16 +1360,6 @@ receiver_loop_done:
 }
 
 void loop() {
-  if (SERIAL_DEBUG_MODE && !g_debug_forced_reboot_done &&
-      (millis() - g_boot_ms >= DEBUG_FORCED_REBOOT_INTERVAL_MS)) {
-    g_debug_forced_reboot_done = true;
-    serial_debug_printf("debug: force reboot after %lu ms uptime",
-                        static_cast<unsigned long>(millis() - g_boot_ms));
-#ifdef ARDUINO_ARCH_ESP32
-    delay(50);
-    esp_restart();
-#endif
-  }
 #ifdef ENABLE_TEST_MODE
   if (g_role == DeviceRole::Sender) {
     test_sender_loop(g_short_id, g_device_id);

src/time_manager.cpp

@@ -1,4 +1,5 @@
 #include "time_manager.h"
+#include "config.h"
 #include <time.h>
 
 static bool g_time_synced = false;
@@ -12,15 +13,20 @@ static void note_last_sync(uint32_t epoch) {
   g_last_sync_utc = epoch;
 }
 
+static void ensure_timezone_set() {
+  if (g_tz_set) {
+    return;
+  }
+  setenv("TZ", TIMEZONE_TZ, 1);
+  tzset();
+  g_tz_set = true;
+}
+
 void time_receiver_init(const char *ntp_server_1, const char *ntp_server_2) {
   const char *server1 = (ntp_server_1 && ntp_server_1[0] != '\0') ? ntp_server_1 : "pool.ntp.org";
   const char *server2 = (ntp_server_2 && ntp_server_2[0] != '\0') ? ntp_server_2 : "time.nist.gov";
   configTime(0, 0, server1, server2);
-  if (!g_tz_set) {
+  ensure_timezone_set();
-    setenv("TZ", "CET-1CEST,M3.5.0/2,M10.5.0/3", 1);
-    tzset();
-    g_tz_set = true;
-  }
 }
 
 uint32_t time_get_utc() {
@@ -40,11 +46,7 @@ bool time_is_synced() {
 }
 
 void time_set_utc(uint32_t epoch) {
-  if (!g_tz_set) {
+  ensure_timezone_set();
-    setenv("TZ", "CET-1CEST,M3.5.0/2,M10.5.0/3", 1);
-    tzset();
-    g_tz_set = true;
-  }
   struct timeval tv;
   tv.tv_sec = epoch;
   tv.tv_usec = 0;