NFC: Implement Type 4 Tag writing biolerplate and structure

applications/main/nfc/helpers/protocol_support/type_4_tag/type_4_tag.c

@@ -129,9 +129,10 @@ static void nfc_scene_read_on_enter_type_4_tag(NfcApp* instance) {
 static void nfc_scene_read_and_saved_menu_on_enter_type_4_tag(NfcApp* instance) {
     Submenu* submenu = instance->submenu;
 
+    // FIXME: standardize this and the write scenes into protocol support helper
     submenu_add_item(
         submenu,
-        "Write (Not Implemented)",
+        "Write",
         SubmenuIndexWrite,
         nfc_protocol_support_common_submenu_callback,
         instance);
@@ -144,8 +145,7 @@ static bool
 
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == SubmenuIndexWrite) {
-            // TODO: Implement write
-            // scene_manager_next_scene(instance->scene_manager, NfcSceneType4TagWrite);
+            scene_manager_next_scene(instance->scene_manager, NfcSceneType4TagWrite);
             consumed = true;
         }
     }

applications/main/nfc/scenes/nfc_scene_config.h

@@ -67,4 +67,8 @@ ADD_SCENE(nfc, slix_key_input, SlixKeyInput)
 ADD_SCENE(nfc, slix_unlock, SlixUnlock)
 ADD_SCENE(nfc, slix_unlock_success, SlixUnlockSuccess)
 
+ADD_SCENE(nfc, type_4_tag_write, Type4TagWrite)
+ADD_SCENE(nfc, type_4_tag_write_success, Type4TagWriteSuccess)
+ADD_SCENE(nfc, type_4_tag_write_fail, Type4TagWriteFail)
+
 ADD_SCENE(nfc, generate_info, GenerateInfo)

applications/main/nfc/scenes/nfc_scene_type_4_tag_write.c

@@ -0,0 +1,105 @@
+#include "../nfc_app_i.h"
+
+#include <nfc/protocols/type_4_tag/type_4_tag_poller.h>
+
+enum {
+    NfcSceneType4TagWriteStateCardSearch,
+    NfcSceneType4TagWriteStateCardFound,
+};
+
+NfcCommand nfc_scene_type_4_tag_write_worker_callback(NfcGenericEvent event, void* context) {
+    furi_assert(context);
+    furi_assert(event.event_data);
+    furi_assert(event.protocol == NfcProtocolType4Tag);
+
+    NfcCommand command = NfcCommandContinue;
+    NfcApp* instance = context;
+    Type4TagPollerEvent* t4t_event = event.event_data;
+
+    if(t4t_event->type == Type4TagPollerEventTypeRequestMode) {
+        t4t_event->data->poller_mode.mode = Type4TagPollerModeWrite;
+        t4t_event->data->poller_mode.data =
+            nfc_device_get_data(instance->nfc_device, NfcProtocolType4Tag);
+        view_dispatcher_send_custom_event(instance->view_dispatcher, NfcCustomEventCardDetected);
+    } else if(t4t_event->type == Type4TagPollerEventTypeWriteFail) {
+        scene_manager_set_scene_state(
+            instance->scene_manager, NfcSceneType4TagWriteFail, t4t_event->data->error);
+        view_dispatcher_send_custom_event(instance->view_dispatcher, NfcCustomEventPollerFailure);
+        command = NfcCommandStop;
+    } else if(t4t_event->type == Type4TagPollerEventTypeWriteSuccess) {
+        view_dispatcher_send_custom_event(instance->view_dispatcher, NfcCustomEventPollerSuccess);
+        command = NfcCommandStop;
+    }
+    return command;
+}
+
+static void nfc_scene_type_4_tag_write_setup_view(NfcApp* instance) {
+    Popup* popup = instance->popup;
+    popup_reset(popup);
+    uint32_t state = scene_manager_get_scene_state(instance->scene_manager, NfcSceneType4TagWrite);
+
+    if(state == NfcSceneType4TagWriteStateCardSearch) {
+        popup_set_header(instance->popup, "Writing", 95, 20, AlignCenter, AlignCenter);
+        popup_set_text(
+            instance->popup, "Apply card\nto the back", 95, 38, AlignCenter, AlignCenter);
+        popup_set_icon(instance->popup, 0, 8, &I_NFC_manual_60x50);
+    } else {
+        popup_set_header(popup, "Writing\nDon't move...", 52, 32, AlignLeft, AlignCenter);
+        popup_set_icon(popup, 12, 23, &A_Loading_24);
+    }
+
+    view_dispatcher_switch_to_view(instance->view_dispatcher, NfcViewPopup);
+}
+
+void nfc_scene_type_4_tag_write_on_enter(void* context) {
+    NfcApp* instance = context;
+    dolphin_deed(DolphinDeedNfcEmulate);
+
+    scene_manager_set_scene_state(
+        instance->scene_manager, NfcSceneType4TagWrite, NfcSceneType4TagWriteStateCardSearch);
+    nfc_scene_type_4_tag_write_setup_view(instance);
+
+    // Setup and start worker
+    instance->poller = nfc_poller_alloc(instance->nfc, NfcProtocolType4Tag);
+    nfc_poller_start(instance->poller, nfc_scene_type_4_tag_write_worker_callback, instance);
+
+    nfc_blink_emulate_start(instance);
+}
+
+bool nfc_scene_type_4_tag_write_on_event(void* context, SceneManagerEvent event) {
+    NfcApp* instance = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == NfcCustomEventCardDetected) {
+            scene_manager_set_scene_state(
+                instance->scene_manager,
+                NfcSceneType4TagWrite,
+                NfcSceneType4TagWriteStateCardFound);
+            nfc_scene_type_4_tag_write_setup_view(instance);
+            consumed = true;
+        } else if(event.event == NfcCustomEventPollerSuccess) {
+            scene_manager_next_scene(instance->scene_manager, NfcSceneType4TagWriteSuccess);
+            consumed = true;
+        } else if(event.event == NfcCustomEventPollerFailure) {
+            scene_manager_next_scene(instance->scene_manager, NfcSceneType4TagWriteFail);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void nfc_scene_type_4_tag_write_on_exit(void* context) {
+    NfcApp* instance = context;
+
+    nfc_poller_stop(instance->poller);
+    nfc_poller_free(instance->poller);
+
+    scene_manager_set_scene_state(
+        instance->scene_manager, NfcSceneType4TagWrite, NfcSceneType4TagWriteStateCardSearch);
+    // Clear view
+    popup_reset(instance->popup);
+
+    nfc_blink_stop(instance);
+}

applications/main/nfc/scenes/nfc_scene_type_4_tag_write_fail.c

@@ -0,0 +1,72 @@
+#include "../nfc_app_i.h"
+
+#include <nfc/protocols/type_4_tag/type_4_tag_poller.h>
+
+void nfc_scene_type_4_tag_write_fail_widget_callback(
+    GuiButtonType result,
+    InputType type,
+    void* context) {
+    NfcApp* instance = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(instance->view_dispatcher, result);
+    }
+}
+
+void nfc_scene_type_4_tag_write_fail_on_enter(void* context) {
+    NfcApp* instance = context;
+    Widget* widget = instance->widget;
+
+    notification_message(instance->notifications, &sequence_error);
+
+    widget_add_icon_element(widget, 83, 22, &I_WarningDolphinFlip_45x42);
+    widget_add_string_element(
+        widget, 7, 4, AlignLeft, AlignTop, FontPrimary, "Writing gone wrong!");
+    Type4TagError error =
+        scene_manager_get_scene_state(instance->scene_manager, NfcSceneType4TagWriteFail);
+    widget_add_string_multiline_element(
+        widget,
+        7,
+        17,
+        AlignLeft,
+        AlignTop,
+        FontSecondary,
+        error == Type4TagErrorCardLocked ? "Card does not\nallow writing\nnew data" :
+                                           "Failed to\nwrite new data");
+
+    widget_add_button_element(
+        widget,
+        GuiButtonTypeLeft,
+        "Finish",
+        nfc_scene_type_4_tag_write_fail_widget_callback,
+        instance);
+
+    // Setup and start worker
+    view_dispatcher_switch_to_view(instance->view_dispatcher, NfcViewWidget);
+}
+
+static bool nfc_scene_type_4_tag_write_fail_move_to_back_scene(const NfcApp* const instance) {
+    bool was_saved = scene_manager_has_previous_scene(instance->scene_manager, NfcSceneSavedMenu);
+    uint32_t scene_id = was_saved ? NfcSceneSavedMenu : NfcSceneReadMenu;
+
+    return scene_manager_search_and_switch_to_previous_scene(instance->scene_manager, scene_id);
+}
+
+bool nfc_scene_type_4_tag_write_fail_on_event(void* context, SceneManagerEvent event) {
+    NfcApp* instance = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == GuiButtonTypeLeft) {
+            consumed = nfc_scene_type_4_tag_write_fail_move_to_back_scene(instance);
+        }
+    } else if(event.type == SceneManagerEventTypeBack) {
+        consumed = nfc_scene_type_4_tag_write_fail_move_to_back_scene(instance);
+    }
+    return consumed;
+}
+
+void nfc_scene_type_4_tag_write_fail_on_exit(void* context) {
+    NfcApp* instance = context;
+
+    widget_reset(instance->widget);
+}

applications/main/nfc/scenes/nfc_scene_type_4_tag_write_success.c

@@ -0,0 +1,46 @@
+#include "../nfc_app_i.h"
+
+void nfc_scene_type_4_tag_write_success_popup_callback(void* context) {
+    NfcApp* instance = context;
+    view_dispatcher_send_custom_event(instance->view_dispatcher, NfcCustomEventViewExit);
+}
+
+void nfc_scene_type_4_tag_write_success_on_enter(void* context) {
+    NfcApp* instance = context;
+    dolphin_deed(DolphinDeedNfcSave);
+
+    notification_message(instance->notifications, &sequence_success);
+
+    Popup* popup = instance->popup;
+    popup_set_icon(popup, 48, 6, &I_DolphinDone_80x58);
+    popup_set_header(popup, "Successfully\nwritten", 5, 22, AlignLeft, AlignBottom);
+    popup_set_timeout(popup, 1500);
+    popup_set_context(popup, instance);
+    popup_set_callback(popup, nfc_scene_type_4_tag_write_success_popup_callback);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(instance->view_dispatcher, NfcViewPopup);
+}
+
+bool nfc_scene_type_4_tag_write_success_on_event(void* context, SceneManagerEvent event) {
+    NfcApp* instance = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == NfcCustomEventViewExit) {
+            bool was_saved =
+                scene_manager_has_previous_scene(instance->scene_manager, NfcSceneSavedMenu);
+
+            consumed = scene_manager_search_and_switch_to_previous_scene(
+                instance->scene_manager, was_saved ? NfcSceneSavedMenu : NfcSceneReadSuccess);
+        }
+    }
+    return consumed;
+}
+
+void nfc_scene_type_4_tag_write_success_on_exit(void* context) {
+    NfcApp* instance = context;
+
+    // Clear view
+    popup_reset(instance->popup);
+}

lib/nfc/protocols/type_4_tag/type_4_tag.h

@@ -14,6 +14,7 @@ typedef enum {
     Type4TagErrorWrongFormat,
     Type4TagErrorNotSupported,
     Type4TagErrorApduFailed,
+    Type4TagErrorCardLocked,
     Type4TagErrorCustomCommand,
 } Type4TagError;
 

lib/nfc/protocols/type_4_tag/type_4_tag_poller.c

@@ -45,10 +45,27 @@ static NfcCommand type_4_tag_poller_handler_idle(Type4TagPoller* instance) {
         instance->data->iso14443_4a_data,
         iso14443_4a_poller_get_data(instance->iso14443_4a_poller));
 
-    instance->state = Type4TagPollerStateSelectApplication;
+    instance->state = Type4TagPollerStateRequestMode;
     return NfcCommandContinue;
 }
 
+static NfcCommand type_4_tag_poller_handler_request_mode(Type4TagPoller* instance) {
+    NfcCommand command = NfcCommandContinue;
+
+    instance->type_4_tag_event.type = Type4TagPollerEventTypeRequestMode;
+    instance->type_4_tag_event.data->poller_mode.mode = Type4TagPollerModeRead;
+    instance->type_4_tag_event.data->poller_mode.data = NULL;
+
+    command = instance->callback(instance->general_event, instance->context);
+    instance->mode = instance->type_4_tag_event.data->poller_mode.mode;
+    if(instance->mode == Type4TagPollerModeWrite) {
+        type_4_tag_copy(instance->data, instance->type_4_tag_event.data->poller_mode.data);
+    }
+
+    instance->state = Type4TagPollerStateSelectApplication;
+    return command;
+}
+
 static NfcCommand type_4_tag_poller_handler_select_app(Type4TagPoller* instance) {
     instance->error = type_4_tag_poller_select_app(instance);
     if(instance->error == Type4TagErrorNone) {
@@ -56,8 +73,12 @@ static NfcCommand type_4_tag_poller_handler_select_app(Type4TagPoller* instance)
         instance->state = Type4TagPollerStateReadCapabilityContainer;
     } else {
         FURI_LOG_E(TAG, "Failed to select application");
-        iso14443_4a_poller_halt(instance->iso14443_4a_poller);
-        instance->state = Type4TagPollerStateReadFailed;
+        if(instance->mode == Type4TagPollerModeWrite &&
+           instance->error == Type4TagErrorApduFailed) {
+            instance->state = Type4TagPollerStateCreateApplication;
+        } else {
+            instance->state = Type4TagPollerStateFailed;
+        }
     }
 
     return NfcCommandContinue;
@@ -67,11 +88,17 @@ static NfcCommand type_4_tag_poller_handler_read_cc(Type4TagPoller* instance) {
     instance->error = type_4_tag_poller_read_cc(instance);
     if(instance->error == Type4TagErrorNone) {
         FURI_LOG_D(TAG, "Read CC success");
-        instance->state = Type4TagPollerStateReadNdefMessage;
+        instance->state = instance->mode == Type4TagPollerModeRead ?
+                              Type4TagPollerStateReadNdefMessage :
+                              Type4TagPollerStateWriteNdefMessage;
     } else {
         FURI_LOG_E(TAG, "Failed to read CC");
-        iso14443_4a_poller_halt(instance->iso14443_4a_poller);
-        instance->state = Type4TagPollerStateReadFailed;
+        if(instance->mode == Type4TagPollerModeWrite &&
+           instance->error == Type4TagErrorApduFailed) {
+            instance->state = Type4TagPollerStateCreateCapabilityContainer;
+        } else {
+            instance->state = Type4TagPollerStateFailed;
+        }
     }
 
     return NfcCommandContinue;
@@ -81,41 +108,115 @@ static NfcCommand type_4_tag_poller_handler_read_ndef(Type4TagPoller* instance)
     instance->error = type_4_tag_poller_read_ndef(instance);
     if(instance->error == Type4TagErrorNone) {
         FURI_LOG_D(TAG, "Read NDEF success");
-        instance->state = Type4TagPollerStateReadSuccess;
+        instance->state = Type4TagPollerStateSuccess;
     } else {
         FURI_LOG_E(TAG, "Failed to read NDEF");
-        iso14443_4a_poller_halt(instance->iso14443_4a_poller);
-        instance->state = Type4TagPollerStateReadFailed;
+        instance->state = Type4TagPollerStateFailed;
     }
 
     return NfcCommandContinue;
 }
 
-static NfcCommand type_4_tag_poller_handler_read_fail(Type4TagPoller* instance) {
-    FURI_LOG_D(TAG, "Read Failed");
+static NfcCommand type_4_tag_poller_handler_create_app(Type4TagPoller* instance) {
+    instance->error = type_4_tag_poller_create_app(instance);
+    if(instance->error == Type4TagErrorNone) {
+        FURI_LOG_D(TAG, "Create application success");
+        instance->state = Type4TagPollerStateSelectApplication;
+    } else {
+        FURI_LOG_E(TAG, "Failed to create application");
+        if(instance->error == Type4TagErrorApduFailed) {
+            instance->error = Type4TagErrorCardLocked;
+        }
+        instance->state = Type4TagPollerStateFailed;
+    }
+
+    return NfcCommandContinue;
+}
+
+static NfcCommand type_4_tag_poller_handler_create_cc(Type4TagPoller* instance) {
+    instance->error = type_4_tag_poller_create_cc(instance);
+    if(instance->error == Type4TagErrorNone) {
+        FURI_LOG_D(TAG, "Create CC success");
+        instance->state = Type4TagPollerStateReadCapabilityContainer;
+    } else {
+        FURI_LOG_E(TAG, "Failed to create CC");
+        if(instance->error == Type4TagErrorApduFailed) {
+            instance->error = Type4TagErrorCardLocked;
+        }
+        instance->state = Type4TagPollerStateFailed;
+    }
+
+    return NfcCommandContinue;
+}
+
+static NfcCommand type_4_tag_poller_handler_create_ndef(Type4TagPoller* instance) {
+    instance->error = type_4_tag_poller_create_ndef(instance);
+    if(instance->error == Type4TagErrorNone) {
+        FURI_LOG_D(TAG, "Create NDEF success");
+        instance->state = Type4TagPollerStateWriteNdefMessage;
+    } else {
+        FURI_LOG_E(TAG, "Failed to create NDEF");
+        if(instance->error == Type4TagErrorApduFailed) {
+            instance->error = Type4TagErrorCardLocked;
+        }
+        instance->state = Type4TagPollerStateFailed;
+    }
+
+    return NfcCommandContinue;
+}
+
+static NfcCommand type_4_tag_poller_handler_write_ndef(Type4TagPoller* instance) {
+    instance->error = type_4_tag_poller_write_ndef(instance);
+    if(instance->error == Type4TagErrorNone) {
+        FURI_LOG_D(TAG, "Write NDEF success");
+        instance->state = Type4TagPollerStateSuccess;
+    } else {
+        FURI_LOG_E(TAG, "Failed to write NDEF");
+        if(instance->mode == Type4TagPollerModeWrite &&
+           instance->error == Type4TagErrorApduFailed) {
+            instance->state = Type4TagPollerStateCreateNdefMessage;
+        } else {
+            instance->state = Type4TagPollerStateFailed;
+        }
+    }
+
+    return NfcCommandContinue;
+}
+
+static NfcCommand type_4_tag_poller_handler_fail(Type4TagPoller* instance) {
+    FURI_LOG_D(TAG, "Operation Failed");
     iso14443_4a_poller_halt(instance->iso14443_4a_poller);
-    instance->type_4_tag_event.type = Type4TagPollerEventTypeReadFailed;
+    instance->type_4_tag_event.type = instance->mode == Type4TagPollerModeRead ?
+                                          Type4TagPollerEventTypeReadFailed :
+                                          Type4TagPollerEventTypeWriteFail;
     instance->type_4_tag_event.data->error = instance->error;
     NfcCommand command = instance->callback(instance->general_event, instance->context);
     instance->state = Type4TagPollerStateIdle;
     return command;
 }
 
-static NfcCommand type_4_tag_poller_handler_read_success(Type4TagPoller* instance) {
-    FURI_LOG_D(TAG, "Read success.");
+static NfcCommand type_4_tag_poller_handler_success(Type4TagPoller* instance) {
+    FURI_LOG_D(TAG, "Operation succeeded");
     iso14443_4a_poller_halt(instance->iso14443_4a_poller);
-    instance->type_4_tag_event.type = Type4TagPollerEventTypeReadSuccess;
+    instance->type_4_tag_event.type = instance->mode == Type4TagPollerModeRead ?
+                                          Type4TagPollerEventTypeReadSuccess :
+                                          Type4TagPollerEventTypeWriteSuccess;
     NfcCommand command = instance->callback(instance->general_event, instance->context);
     return command;
 }
 
 static const Type4TagPollerReadHandler type_4_tag_poller_read_handler[Type4TagPollerStateNum] = {
     [Type4TagPollerStateIdle] = type_4_tag_poller_handler_idle,
+    [Type4TagPollerStateRequestMode] = type_4_tag_poller_handler_request_mode,
     [Type4TagPollerStateSelectApplication] = type_4_tag_poller_handler_select_app,
     [Type4TagPollerStateReadCapabilityContainer] = type_4_tag_poller_handler_read_cc,
     [Type4TagPollerStateReadNdefMessage] = type_4_tag_poller_handler_read_ndef,
-    [Type4TagPollerStateReadFailed] = type_4_tag_poller_handler_read_fail,
-    [Type4TagPollerStateReadSuccess] = type_4_tag_poller_handler_read_success,
+    [Type4TagPollerStateCreateApplication] = type_4_tag_poller_handler_create_app,
+    [Type4TagPollerStateCreateCapabilityContainer] = type_4_tag_poller_handler_create_cc,
+    [Type4TagPollerStateCreateNdefMessage] = type_4_tag_poller_handler_create_ndef,
+    [Type4TagPollerStateWriteNdefMessage] = type_4_tag_poller_handler_write_ndef,
+    [Type4TagPollerStateFailed] = type_4_tag_poller_handler_fail,
+    [Type4TagPollerStateSuccess] = type_4_tag_poller_handler_success,
 };
 
 static void type_4_tag_poller_set_callback(

lib/nfc/protocols/type_4_tag/type_4_tag_poller.h

@@ -15,15 +15,37 @@ typedef struct Type4TagPoller Type4TagPoller;
  * @brief Enumeration of possible Type4Tag poller event types.
  */
 typedef enum {
+    Type4TagPollerEventTypeRequestMode, /**< Poller requests for operating mode. */
     Type4TagPollerEventTypeReadSuccess, /**< Card was read successfully. */
     Type4TagPollerEventTypeReadFailed, /**< Poller failed to read card. */
+    Type4TagPollerEventTypeWriteSuccess, /**< Poller wrote card successfully. */
+    Type4TagPollerEventTypeWriteFail, /**< Poller failed to write card. */
 } Type4TagPollerEventType;
 
+/**
+ * @brief Enumeration of possible Type4Tag poller operating modes.
+ */
+typedef enum {
+    Type4TagPollerModeRead, /**< Poller will only read card. It's a default mode. */
+    Type4TagPollerModeWrite, /**< Poller will write already saved card to another presented card. */
+} Type4TagPollerMode;
+
+/**
+ * @brief Type4Tag poller request mode event data.
+ *
+ * This instance of this structure must be filled on Type4TagPollerEventTypeRequestMode event.
+ */
+typedef struct {
+    Type4TagPollerMode mode; /**< Mode to be used by poller. */
+    const Type4TagData* data; /**< Data to be used by poller. */
+} Type4TagPollerEventDataRequestMode;
+
 /**
  * @brief Type4Tag poller event data.
  */
 typedef union {
     Type4TagError error; /**< Error code indicating card reading fail reason. */
+    Type4TagPollerEventDataRequestMode poller_mode; /**< Poller mode context. */
 } Type4TagPollerEventData;
 
 /**

lib/nfc/protocols/type_4_tag/type_4_tag_poller_i.c

@@ -198,11 +198,28 @@ Type4TagError type_4_tag_poller_read_ndef(Type4TagPoller* instance) {
         if(error != Type4TagErrorNone) break;
 
         FURI_LOG_D(
-            TAG,
-            "Read NDEF file 0x%04X of %lu bytes",
-            instance->data->ndef_file_id,
-            simple_array_get_count(instance->data->ndef_data));
+            TAG, "Read %hu bytes from NDEF file 0x%04X", ndef_len, instance->data->ndef_file_id);
     } while(false);
 
     return error;
 }
+
+Type4TagError type_4_tag_poller_create_app(Type4TagPoller* instance) {
+    UNUSED(instance);
+    return Type4TagErrorNotSupported;
+}
+
+Type4TagError type_4_tag_poller_create_cc(Type4TagPoller* instance) {
+    UNUSED(instance);
+    return Type4TagErrorNotSupported;
+}
+
+Type4TagError type_4_tag_poller_create_ndef(Type4TagPoller* instance) {
+    UNUSED(instance);
+    return Type4TagErrorNotSupported;
+}
+
+Type4TagError type_4_tag_poller_write_ndef(Type4TagPoller* instance) {
+    UNUSED(instance);
+    return Type4TagErrorNotSupported;
+}

lib/nfc/protocols/type_4_tag/type_4_tag_poller_i.h

@@ -10,11 +10,16 @@ extern "C" {
 
 typedef enum {
     Type4TagPollerStateIdle,
+    Type4TagPollerStateRequestMode,
     Type4TagPollerStateSelectApplication,
     Type4TagPollerStateReadCapabilityContainer,
     Type4TagPollerStateReadNdefMessage,
-    Type4TagPollerStateReadFailed,
-    Type4TagPollerStateReadSuccess,
+    Type4TagPollerStateCreateApplication,
+    Type4TagPollerStateCreateCapabilityContainer,
+    Type4TagPollerStateCreateNdefMessage,
+    Type4TagPollerStateWriteNdefMessage,
+    Type4TagPollerStateFailed,
+    Type4TagPollerStateSuccess,
 
     Type4TagPollerStateNum,
 } Type4TagPollerState;
@@ -22,6 +27,7 @@ typedef enum {
 struct Type4TagPoller {
     Iso14443_4aPoller* iso14443_4a_poller;
     Type4TagPollerState state;
+    Type4TagPollerMode mode;
     Type4TagError error;
     Type4TagData* data;
     BitBuffer* tx_buffer;
@@ -41,6 +47,14 @@ Type4TagError type_4_tag_poller_read_cc(Type4TagPoller* instance);
 
 Type4TagError type_4_tag_poller_read_ndef(Type4TagPoller* instance);
 
+Type4TagError type_4_tag_poller_create_app(Type4TagPoller* instance);
+
+Type4TagError type_4_tag_poller_create_cc(Type4TagPoller* instance);
+
+Type4TagError type_4_tag_poller_create_ndef(Type4TagPoller* instance);
+
+Type4TagError type_4_tag_poller_write_ndef(Type4TagPoller* instance);
+
 #ifdef __cplusplus
 }
 #endif