Ensure that boot script is run in uninterrupted task.

main/inkpot.c

@@ -237,6 +237,10 @@ esp_err_t http_draw(httpd_req_t* req) {
     }
 
     // TODO: Error handling
+    // TODO: Ensure that `run_lua_string` is executed in an uninterrupted task;
+    // this means we need to set the task prio of the current request.
+    // Execute the Lua script received as post body; this is executed as a
+    // FreeRTOS task that will not be interrupted
     run_lua_string(buf, "E-Paper Script via HTTP");
     heap_caps_free(buf);
 
@@ -285,8 +289,13 @@ void app_main(void) {
         register_http_routes(server);
     }
 
-    // Run script in assets/epaper.lua
+    // Run script in assets/epaper.lua; this is executed as a FreeRTOS task
+    // that may not be interrupted
+    void runLuaFile (void* arg) {
         run_lua_file("epaper.lua", "E-Paper Startup Script");
+        vTaskDelete(NULL);
+    }
+    xTaskCreate(runLuaFile, "run_lua_file", 4096, NULL, tskIDLE_PRIORITY, NULL);
 
     ESP_LOGI(TAG, "End of application.");