Fix wifi crash on freq scan

.gitignore

@@ -16,3 +16,4 @@ coredump_report.txt
 coredump.bin
 logs/
 elf_archive/
+src/SomfyController.ino.cpp

src/Somfy.cpp

@@ -4878,6 +4878,15 @@ bool Transceiver::begin() {
     return true;
 }
 void Transceiver::loop() {
+  // Dispatch deferred frequency scan requests from the main task so that
+  // attachInterrupt/detachInterrupt cross-core IPCs don't race with WiFi.
+  if(_pendingScan >= 0) {
+    int8_t pending = _pendingScan;
+    _pendingScan = -1;
+    if(pending == 1) this->beginFrequencyScan();
+    else this->endFrequencyScan();
+    return;
+  }
   somfy_rx_t rx;
   if (noiseDetected && rxmode != 3 && this->config.noiseDetection) {
     if (millis() - noiseStart > 100) {

src/Somfy.h

@@ -490,6 +490,10 @@ class Transceiver {
     bool _received = false;
     somfy_frame_t frame;
   public:
+    // -1 = none pending, 1 = beginFrequencyScan pending, 0 = endFrequencyScan pending.
+    // Set from the async_tcp task; consumed by loop() on the main task to avoid
+    // concurrent cross-core IPC races with the WiFi stack (EXCCAUSE_LOAD_PROHIBITED).
+    volatile int8_t _pendingScan = -1;
     transceiver_config_t config;
     bool printBuffer = false;
     //bool toJSON(JsonObject& obj);

src/SomfyController.ino.cpp

@@ -1,147 +0,0 @@
-# 1 "C:\\Users\\oem\\AppData\\Local\\Temp\\tmpahrx2jqr"
-#include <Arduino.h>
-# 1 "C:/Users/oem/Documents/PlatformIO/Projects/ESPSomfy-RTS/src/SomfyController.ino"
-#include "esp_log.h"
-#include <WiFi.h>
-#include <LittleFS.h>
-#include <esp_task_wdt.h>
-#include "ConfigSettings.h"
-#include "ESPNetwork.h"
-#include "Web.h"
-#include "Sockets.h"
-#include "Utils.h"
-#include "Somfy.h"
-#include "MQTT.h"
-#include "GitOTA.h"
-#include "esp_core_dump.h"
-
-static const char *TAG = "Main";
-
-ConfigSettings settings;
-Web webServer;
-SocketEmitter sockEmit;
-ESPNetwork net;
-rebootDelay_t rebootDelay;
-SomfyShadeController somfy;
-MQTTClass mqtt;
-GitUpdater git;
-
-uint32_t oldheap = 0;
-void listDir(const char *dirname, uint8_t levels);
-void setup();
-void loop();
-#line 28 "C:/Users/oem/Documents/PlatformIO/Projects/ESPSomfy-RTS/src/SomfyController.ino"
-void listDir(const char *dirname, uint8_t levels) {
-    ESP_LOGI(TAG, "Listing: %s", dirname);
-    File root = LittleFS.open(dirname);
-    if (!root || !root.isDirectory()) {
-        ESP_LOGE(TAG, "Failed to open directory");
-        return;
-    }
-    File file = root.openNextFile();
-    while (file) {
-        if (file.isDirectory()) {
-            ESP_LOGI(TAG, "  DIR : %s", file.name());
-            if (levels) listDir(file.path(), levels - 1);
-        } else {
-            ESP_LOGI(TAG, "  FILE: %-30s  %d bytes", file.name(), file.size());
-        }
-        file = root.openNextFile();
-    }
-}
-
-void setup() {
-  Serial.begin(115200);
-  ESP_LOGI(TAG, "Startup/Boot....");
-  esp_core_dump_summary_t summary;
-  if (esp_core_dump_get_summary(&summary) == ESP_OK) {
-    ESP_LOGW(TAG, "*** Previous crash coredump found ***");
-    ESP_LOGW(TAG, "  Task: %s", summary.exc_task);
-    ESP_LOGW(TAG, "  PC: 0x%08x", summary.exc_pc);
-#ifdef CONFIG_IDF_TARGET_ARCH_XTENSA
-    ESP_LOGW(TAG, "  Cause: %d", summary.ex_info.exc_cause);
-    char bt_buf[256] = {0};
-    int pos = 0;
-    for (int i = 0; i < summary.exc_bt_info.depth; i++) {
-      pos += snprintf(bt_buf + pos, sizeof(bt_buf) - pos, " 0x%08x", summary.exc_bt_info.bt[i]);
-    }
-    ESP_LOGW(TAG, "  Backtrace:%s", bt_buf);
-#elif CONFIG_IDF_TARGET_ARCH_RISCV
-    ESP_LOGW(TAG, "  Cause: %d", summary.ex_info.mcause);
-    ESP_LOGW(TAG, "  MTVAL: 0x%08x  RA: 0x%08x  SP: 0x%08x",
-             summary.ex_info.mtval, summary.ex_info.ra, summary.ex_info.sp);
-#endif
-  }
-  ESP_LOGI(TAG, "Mounting File System...");
-
-
-  if (LittleFS.begin()) {
-      ESP_LOGI(TAG, "Total: %d bytes", LittleFS.totalBytes());
-      ESP_LOGI(TAG, "Used:  %d bytes", LittleFS.usedBytes());
-      ESP_LOGI(TAG, "Free:  %d bytes", LittleFS.totalBytes() - LittleFS.usedBytes());
-      listDir("/", 3);
-  } else {
-      ESP_LOGE(TAG, "LittleFS mount failed!");
-  }
-
-  if(LittleFS.begin()) ESP_LOGI(TAG, "File system mounted successfully");
-  else ESP_LOGE(TAG, "Error mounting file system");
-  settings.begin();
-  if(WiFi.status() == WL_CONNECTED) WiFi.disconnect(true);
-  delay(10);
-  webServer.startup();
-  webServer.begin();
-  delay(1000);
-  net.setup();
-  somfy.begin();
-
-#if ESP_ARDUINO_VERSION_MAJOR >= 3
-  const esp_task_wdt_config_t wdt_config = { .timeout_ms = 15000, .idle_core_mask = 1, .trigger_panic = true };
-  esp_task_wdt_init(&wdt_config);
-#else
-  esp_task_wdt_init(15, true);
-#endif
-  esp_task_wdt_add(NULL);
-
-}
-
-void loop() {
-
-
-  if(rebootDelay.reboot && millis() > rebootDelay.rebootTime) {
-    ESP_LOGI(TAG, "Rebooting after %lums", rebootDelay.rebootTime);
-    net.end();
-    ESP.restart();
-    return;
-  }
-  uint32_t timing = millis();
-
-  net.loop();
-  if(millis() - timing > 100) ESP_LOGD(TAG, "Timing Net: %ldms", millis() - timing);
-  timing = millis();
-  esp_task_wdt_reset();
-  somfy.loop();
-  if(millis() - timing > 100) ESP_LOGD(TAG, "Timing Somfy: %ldms", millis() - timing);
-  timing = millis();
-  esp_task_wdt_reset();
-  if(net.connected() || net.softAPOpened) {
-    if(!rebootDelay.reboot && net.connected() && !net.softAPOpened) {
-      git.loop();
-      esp_task_wdt_reset();
-    }
-    webServer.loop();
-    esp_task_wdt_reset();
-    if(millis() - timing > 100) ESP_LOGD(TAG, "Timing WebServer: %ldms", millis() - timing);
-    esp_task_wdt_reset();
-    timing = millis();
-    sockEmit.loop();
-    if(millis() - timing > 100) ESP_LOGD(TAG, "Timing Socket: %ldms", millis() - timing);
-    esp_task_wdt_reset();
-    timing = millis();
-  }
-  if(rebootDelay.reboot && millis() > rebootDelay.rebootTime) {
-    net.end();
-    ESP.restart();
-  }
-  esp_task_wdt_reset();
-}

src/Web.cpp

@@ -2406,7 +2406,7 @@ void Web::begin() {
     }));
 
   asyncServer.on("/beginFrequencyScan", HTTP_GET, [](AsyncWebServerRequest *request) {
-    somfy.transceiver.beginFrequencyScan();
+    somfy.transceiver._pendingScan = 1; // deferred to main task — see Transceiver::loop()
     AsyncJsonResp resp;
     resp.beginResponse(request, g_async_content, sizeof(g_async_content));
     resp.beginObject();
@@ -2416,7 +2416,7 @@ void Web::begin() {
   });
 
   asyncServer.on("/endFrequencyScan", HTTP_GET, [](AsyncWebServerRequest *request) {
-    somfy.transceiver.endFrequencyScan();
+    somfy.transceiver._pendingScan = 0; // deferred to main task — see Transceiver::loop()
     AsyncJsonResp resp;
     resp.beginResponse(request, g_async_content, sizeof(g_async_content));
     resp.beginObject();