Add Button to dynamically load GPIO Viewer with Berry backend

CHANGELOG.md

@@ -35,6 +35,7 @@ All notable changes to this project will be documented in this file.
 - HASPmota `haspmota.page_show()` to change page (#20333)
 - Berry `introspect.set()` for class attributes (#20339)
 - Support negative power on BL0942 using index 5..8 (#20322)
+- Button to dynamically load GPIO Viewer with Berry backend
 
 ### Breaking Changed
 - Refactoring of Berry `animate` module for WS2812 Leds (#20236)

tasmota/my_user_config.h

@@ -1146,6 +1146,8 @@
     #define USE_BERRY_WEBCLIENT_TIMEOUT  2000    // Default timeout in milliseconds
     //#define USE_BERRY_PARTITION_WIZARD           // Add a button to dynamically load the Partion Wizard from a bec file online (+1.3KB Flash)
     #define USE_BERRY_PARTITION_WIZARD_URL      "http://ota.tasmota.com/tapp/partition_wizard.bec"
+    //#define USE_BERRY_GPIOVIEWER                 // Add a button to dynamocally load the GPIO Viewer from a bec file online
+    #define USE_BERRY_GPIOVIEWER_URL            "http://ota.tasmota.com/tapp/gpioviewer.bec"
   #define USE_BERRY_TCPSERVER                    // Enable TCP socket server (+0.6k)
   // #define USE_BERRY_ULP                          // Enable ULP (Ultra Low Power) support (+4.9k)
   // Berry crypto extensions below:

tasmota/tasmota_xdrv_driver/xdrv_52_0_berry_struct.ino

@@ -96,6 +96,9 @@ public:
 #ifdef USE_BERRY_PARTITION_WIZARD
   bool partition_wizard_loaded = false; // did we already load Parition_Wizard
 #endif // USE_BERRY_PARTITION_WIZARD
+#ifdef USE_BERRY_GPIOVIEWER
+  bool gpviewer_loaded = false;         // did we already load GPIOViewer
+#endif // USE_BERRY_GPIOVIEWER
   bool autoexec_done = false;           // do we still need to load 'autoexec.be'
   bool repl_active = false;             // is REPL running (activates log recording)
   // output log is stored as a LinkedList of buffers
@@ -107,4 +110,41 @@ BerrySupport berry;
 // multi-purpose serial logging
 extern "C" void serial_debug(const char * berry_buf, ...);
 
+
+/*********************************************************************************************\
+ * Handle dynamic code from Berry bec files
+ *
+\*********************************************************************************************/
+struct BeBECCode_t {
+  const char * display_name;      // display name in Web UI (must be URL encoded)
+  const char * id;                // id in requested URL, also don't load if the global name already exists in Berry
+  const char * url;               // absolute URL to download the bec file
+  const char * redirect;          // relative URI to redirect after loading
+  bool * loaded;
+};
+
+const BeBECCode_t BECCode[] = {
+#ifdef USE_BERRY_PARTITION_WIZARD
+  {
+    "Partition Wizard",
+    "partition_wizard",
+    USE_BERRY_PARTITION_WIZARD_URL,
+    "/part_wiz",
+    &berry.partition_wizard_loaded
+  },
+#endif // USE_BERRY_PARTITION_WIZARD
+
+#ifdef USE_BERRY_GPIOVIEWER
+  {
+    "GPIO Viewer",
+    "gpioviewer",
+    USE_BERRY_GPIOVIEWER_URL,
+    "/mn?",
+    &berry.gpviewer_loaded
+  },
+#endif // USE_BERRY_GPIOVIEWER
+
+};
+
+
 #endif  // USE_BERRY

tasmota/tasmota_xdrv_driver/xdrv_52_9_berry.ino

@@ -764,33 +764,50 @@ void HandleBerryConsole(void)
   WSContentStop();
 }
 
-#ifdef USE_BERRY_PARTITION_WIZARD
-// Display a Button to dynamically load the Partition Wizard
-void HandleBerryPartiionWizardLoaderButton(void) {
+
+// const BeBECCode_t BECCode[] = {
+// struct BeBECCode_t {
+//   const char * display_name;      // display name in Web UI (must be URL encoded)
+//   const char * id;                // id in requested URL
+//   const char * url;               // absolute URL to download the bec file
+//   const char * redirect;          // relative URI to redirect after loading
+// };
+
+// Display Buttons to dynamically load bec files
+void HandleBerryBECLoaderButton(void) {
   bvm * vm = berry.vm;
-  static const char PARTITION_WIZARD_NAME[] = "partition_wizard";
-  if (!berry.partition_wizard_loaded) {
-    if (be_global_find(vm, be_newstr(vm, PARTITION_WIZARD_NAME)) < 0) {    // the global name `partition_wizard` doesn't exist
-      WSContentSend_P("<form id=but_part_mgr style='display: block;' action='tapp' method='get'><input type='hidden' name='n' value='Partition_Wizard'/><button>[Load Partition Wizard]</button></form><p></p>");
-    } else {
-      berry.partition_wizard_loaded = true;
+
+  for (int32_t i = 0; i < ARRAY_SIZE(BECCode); i++) {
+    const BeBECCode_t &bec = BECCode[i];
+    if (!(*bec.loaded)) {
+      if (be_global_find(vm, be_newstr(vm, bec.id)) < 0) {    // the global name  doesn't exist
+        WSContentSend_P("<form id=but_part_mgr style='display: block;' action='tapp' method='get'><input type='hidden' name='n' value='%s'/><button>[Load %s]</button></form><p></p>", bec.id, bec.display_name);
+      } else {
+        *bec.loaded = true;
+      }
     }
   }
 }
 
 extern "C" bbool BerryBECLoader(const char * url);
-void HandleBerryPartitionWizardLoader(void) {
-  if (BerryBECLoader(USE_BERRY_PARTITION_WIZARD_URL)) {
-    // All good, redirect
-    Webserver->sendHeader("Location", "/part_wiz", true);
-    Webserver->send(302, "text/plain", "");
-    berry.partition_wizard_loaded = true;
-  } else {
-    Webserver->sendHeader("Location", "/mn?", true);
-    Webserver->send(302, "text/plain", "");
+
+void HandleBerryBECLoader(void) {
+  String n = Webserver->arg("n");
+  for (int32_t i = 0; i < ARRAY_SIZE(BECCode); i++) {
+    const BeBECCode_t &bec = BECCode[i];
+    if (n.equals(bec.id)) {
+      if (BerryBECLoader(bec.url)) {
+        // All good, redirect
+        Webserver->sendHeader("Location", bec.redirect, true);
+        Webserver->send(302, "text/plain", "");
+        *bec.loaded  = true;
+      } else {
+        Webserver->sendHeader("Location", "/mn?", true);
+        Webserver->send(302, "text/plain", "");
+      }
+    }
   }
 }
-#endif //USE_BERRY_PARTITION_WIZARD
 
 // return true if successful
 extern "C" bbool BerryBECLoader(const char * url) {
@@ -925,9 +942,7 @@ bool Xdrv52(uint32_t function)
         XdrvMailbox.index++;
       } else {
         WSContentSend_P(HTTP_BTN_BERRY_CONSOLE);
-#ifdef USE_BERRY_PARTITION_WIZARD
-      HandleBerryPartiionWizardLoaderButton();
-#endif // USE_BERRY_PARTITION_WIZARD
+        HandleBerryBECLoaderButton();               // display buttons to load BEC files
         callBerryEventDispatcher(PSTR("web_add_button"), nullptr, 0, nullptr);
         callBerryEventDispatcher(PSTR("web_add_console_button"), nullptr, 0, nullptr);
       }
@@ -946,10 +961,8 @@ bool Xdrv52(uint32_t function)
         callBerryEventDispatcher(PSTR("web_add_handler"), nullptr, 0, nullptr);
         berry.web_add_handler_done = true;
       }
-      WebServer_on(PSTR("/bc"), HandleBerryConsole);
-#ifdef USE_BERRY_PARTITION_WIZARD
-      Webserver->on("/tapp", HTTP_GET, HandleBerryPartitionWizardLoader);
-#endif // USE_BERRY_PARTITION_WIZARD
+      WebServer_on("/bc", HandleBerryConsole);
+      WebServer_on("/tapp", HandleBerryBECLoader, HTTP_GET);
       break;
 #endif // USE_WEBSERVER
     case FUNC_SAVE_BEFORE_RESTART: