MFC emulation fixes (#3324)

* mf classic listener: fix write block
* nfc: go to idle state instead of sleep
* lib nfc: fix documentation

lib/nfc/nfc.c

@@ -150,7 +150,7 @@ static int32_t nfc_worker_listener(void* context) {
             } else if(command == NfcCommandReset) {
                 furi_hal_nfc_listener_enable_rx();
             } else if(command == NfcCommandSleep) {
-                furi_hal_nfc_listener_sleep();
+                furi_hal_nfc_listener_idle();
             }
         }
     }

lib/nfc/protocols/felica/felica_poller.h

@@ -18,8 +18,8 @@ typedef struct FelicaPoller FelicaPoller;
  * @brief Enumeration of possible Felica poller event types.
  */
 typedef enum {
-    FelicaPollerEventTypeError, /**< The card was activated by the poller. */
-    FelicaPollerEventTypeReady, /**< An error occured during activation procedure. */
+    FelicaPollerEventTypeError, /**< An error occured during activation procedure. */
+    FelicaPollerEventTypeReady, /**< The card was activated by the poller. */
 } FelicaPollerEventType;
 
 /**

lib/nfc/protocols/iso14443_3a/iso14443_3a_poller.h

@@ -18,8 +18,8 @@ typedef struct Iso14443_3aPoller Iso14443_3aPoller;
  * @brief Enumeration of possible Iso14443_3a poller event types.
  */
 typedef enum {
-    Iso14443_3aPollerEventTypeError, /**< The card was activated by the poller. */
-    Iso14443_3aPollerEventTypeReady, /**< An error occured during activation procedure. */
+    Iso14443_3aPollerEventTypeError, /**< An error occured during activation procedure. */
+    Iso14443_3aPollerEventTypeReady, /**< The card was activated by the poller. */
 } Iso14443_3aPollerEventType;
 
 /**

lib/nfc/protocols/iso14443_3b/iso14443_3b_poller.h

@@ -18,8 +18,8 @@ typedef struct Iso14443_3bPoller Iso14443_3bPoller;
  * @brief Enumeration of possible Iso14443_3b poller event types.
  */
 typedef enum {
-    Iso14443_3bPollerEventTypeError, /**< The card was activated by the poller. */
-    Iso14443_3bPollerEventTypeReady, /**< An error occured during activation procedure. */
+    Iso14443_3bPollerEventTypeError, /**< An error occured during activation procedure. */
+    Iso14443_3bPollerEventTypeReady, /**< The card was activated by the poller. */
 } Iso14443_3bPollerEventType;
 
 /**

lib/nfc/protocols/iso14443_4a/iso14443_4a_poller.h

@@ -17,8 +17,8 @@ typedef struct Iso14443_4aPoller Iso14443_4aPoller;
  * @brief Enumeration of possible Iso14443_4a poller event types.
  */
 typedef enum {
-    Iso14443_4aPollerEventTypeError, /**< The card was activated by the poller. */
-    Iso14443_4aPollerEventTypeReady, /**< An error occured during activation procedure. */
+    Iso14443_4aPollerEventTypeError, /**< An error occured during activation procedure. */
+    Iso14443_4aPollerEventTypeReady, /**< The card was activated by the poller. */
 } Iso14443_4aPollerEventType;
 
 /**

lib/nfc/protocols/iso14443_4b/iso14443_4b_poller.h

@@ -17,8 +17,8 @@ typedef struct Iso14443_4bPoller Iso14443_4bPoller;
  * @brief Enumeration of possible Iso14443_4b poller event types.
  */
 typedef enum {
-    Iso14443_4bPollerEventTypeError, /**< The card was activated by the poller. */
-    Iso14443_4bPollerEventTypeReady, /**< An error occured during activation procedure. */
+    Iso14443_4bPollerEventTypeError, /**< An error occured during activation procedure. */
+    Iso14443_4bPollerEventTypeReady, /**< The card was activated by the poller. */
 } Iso14443_4bPollerEventType;
 
 /**

lib/nfc/protocols/iso15693_3/iso15693_3_poller.h

@@ -17,8 +17,8 @@ typedef struct Iso15693_3Poller Iso15693_3Poller;
  * @brief Enumeration of possible Iso15693_3 poller event types.
  */
 typedef enum {
-    Iso15693_3PollerEventTypeError, /**< The card was activated by the poller. */
-    Iso15693_3PollerEventTypeReady, /**< An error occured during activation procedure. */
+    Iso15693_3PollerEventTypeError, /**< An error occured during activation procedure. */
+    Iso15693_3PollerEventTypeReady, /**< The card was activated by the poller. */
 } Iso15693_3PollerEventType;
 
 /**

lib/nfc/protocols/mf_classic/mf_classic_listener.c

@@ -33,6 +33,7 @@ static void mf_classic_listener_reset_state(MfClassicListener* instance) {
     instance->state = MfClassicListenerStateIdle;
     instance->cmd_in_progress = false;
     instance->current_cmd_handler_idx = 0;
+    instance->write_block = 0;
     instance->transfer_value = 0;
     instance->transfer_valid = false;
     instance->value_cmd = MfClassicValueCommandInvalid;
@@ -240,11 +241,13 @@ static MfClassicListenerCommand mf_classic_listener_write_block_first_part_handl
 
         uint8_t block_num = bit_buffer_get_byte(buff, 1);
         if(block_num >= instance->total_block_num) break;
+        if(block_num == 0) break;
 
         uint8_t sector_num = mf_classic_get_sector_by_block(block_num);
         uint8_t auth_sector_num = mf_classic_get_sector_by_block(auth_ctx->block_num);
         if(sector_num != auth_sector_num) break;
 
+        instance->write_block = block_num;
         instance->cmd_in_progress = true;
         instance->current_cmd_handler_idx++;
         command = MfClassicListenerCommandAck;
@@ -265,7 +268,7 @@ static MfClassicListenerCommand mf_classic_listener_write_block_second_part_hand
         size_t buff_size = bit_buffer_get_size_bytes(buff);
         if(buff_size != sizeof(MfClassicBlock)) break;
 
-        uint8_t block_num = auth_ctx->block_num;
+        uint8_t block_num = instance->write_block;
         MfClassicKeyType key_type = auth_ctx->key_type;
         MfClassicBlock block = instance->data->block[block_num];
 
@@ -609,6 +612,7 @@ NfcCommand mf_classic_listener_run(NfcGenericEvent event, void* context) {
 
             mf_classic_listener_send_short_frame(instance, nack);
             mf_classic_listener_reset_state(instance);
+            command = NfcCommandSleep;
         } else if(mfc_command == MfClassicListenerCommandSilent) {
             command = NfcCommandReset;
         } else if(mfc_command == MfClassicListenerCommandSleep) {

lib/nfc/protocols/mf_classic/mf_classic_listener_i.h

@@ -40,6 +40,9 @@ struct MfClassicListener {
     Crypto1* crypto;
     MfClassicAuthContext auth_context;
 
+    // Write block context
+    uint8_t write_block;
+
     // Value operation data
     int32_t transfer_value;
     bool transfer_valid;