diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c56ebc..0f089e4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,17 +1,17 @@
- # 
+ #
  # This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  # Copyright (c) 2022 Pol Henarejos.
- # 
- # This program is free software: you can redistribute it and/or modify  
- # it under the terms of the GNU General Public License as published by  
+ #
+ # This program is free software: you can redistribute it and/or modify
+ # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, version 3.
  #
- # This program is distributed in the hope that it will be useful, but 
- # WITHOUT ANY WARRANTY; without even the implied warranty of 
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ # This program is distributed in the hope that it will be useful, but
+ # WITHOUT ANY WARRANTY; without even the implied warranty of
+ # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  # General Public License for more details.
  #
- # You should have received a copy of the GNU General Public License 
+ # You should have received a copy of the GNU General Public License
  # along with this program. If not, see <http://www.gnu.org/licenses/>.
  #
 
@@ -65,7 +65,7 @@ target_compile_options(pico_ccid PUBLIC
     -Wall
     -Werror
 )
-    
+
 pico_add_extra_outputs(pico_ccid)
 
 target_link_libraries(pico_ccid PRIVATE pico_stdlib pico_multicore hardware_flash hardware_sync hardware_adc pico_unique_id hardware_rtc tinyusb_device tinyusb_board)
diff --git a/src/ccid/asn1.c b/src/ccid/asn1.c
index d0b5f7f..25aa3ca 100644
--- a/src/ccid/asn1.c
+++ b/src/ccid/asn1.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -61,7 +61,7 @@ int walk_tlv(const uint8_t *cdata, size_t cdata_len, uint8_t **p, uint16_t *tag,
     if ((tg & 0x1f) == 0x1f) {
         tg <<= 8;
         tg |= *(*p)++;
-    }    
+    }
     tgl = *(*p)++;
     if (tgl == 0x82) {
         tgl = *(*p)++ << 8;
diff --git a/src/ccid/asn1.h b/src/ccid/asn1.h
index f22d754..89ca2ec 100644
--- a/src/ccid/asn1.h
+++ b/src/ccid/asn1.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico HSM distribution (https://github.com/polhenarejos/pico-hsm).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/ccid/ccid2040.c b/src/ccid/ccid2040.c
index 15f25d9..6ce5baf 100644
--- a/src/ccid/ccid2040.c
+++ b/src/ccid/ccid2040.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -122,7 +122,7 @@ static bool wait_button() {
     uint32_t start_button = board_millis();
     bool timeout = false;
     led_set_blink((1000 << 16) | 100);
-    
+
     while (board_button_read() == false) {
         execute_tasks();
         //sleep_ms(10);
@@ -359,10 +359,10 @@ static void card_init(void) {
 void card_thread() {
     card_init ();
 
-    while (1) {    
+    while (1) {
         uint32_t m;
         queue_remove_blocking(&ccid_to_card_q, &m);
-        
+
         if (m == EV_VERIFY_CMD_AVAILABLE || m == EV_MODIFY_CMD_AVAILABLE)
 	    {
 	        set_res_sw (0x6f, 0x00);
@@ -376,7 +376,7 @@ void card_thread() {
 	    }
 
         process_apdu();
-        
+
         done:;
         uint32_t flag = EV_EXEC_FINISHED;
         queue_add_blocking(&card_to_ccid_q, &flag);
@@ -389,7 +389,7 @@ void card_thread() {
 void ccid_task(void) {
     if (tud_vendor_mounted()) {
         if (usb_event_handle() != 0) {
-            
+
         }
         usb_write_flush();
         uint32_t m = 0x0;
@@ -513,7 +513,7 @@ void led_blinking_task() {
 #else
     uint32_t interval = led_state ? blink_interval_ms & 0xffff : blink_interval_ms >> 16;
 #endif
-    
+
 
     // Blink every interval ms
     if (board_millis() - start_ms < interval)
@@ -538,7 +538,7 @@ void led_off_all() {
 }
 
 void init_rtc() {
-    
+
     rtc_init();
     datetime_t dt = {
             .year  = 2020,
@@ -566,11 +566,11 @@ int main(void) {
     ccid_header = (struct ccid_header *)usb_get_rx();
     ccid_header->apdu = usb_get_rx()+10;
     apdu.header = ccid_header->apdu;
-        
+
     ccid_response = (struct ccid_header *)usb_get_tx();
     ccid_response->apdu = usb_get_tx()+10;
     apdu.rdata = ccid_response->apdu;
-    
+
     queue_init(&card_to_ccid_q, sizeof(uint32_t), 64);
     queue_init(&ccid_to_card_q, sizeof(uint32_t), 64);
 
@@ -596,15 +596,15 @@ int main(void) {
     tusb_init();
 
     //prepare_ccid();
-    
+
     random_init();
-    
+
     low_flash_init();
-    
+
     init_rtc();
-    
+
     //ccid_prepare_receive(&ccid);
-      
+
     while (1) {
         execute_tasks();
         neug_task();
diff --git a/src/ccid/ccid2040.h b/src/ccid/ccid2040.h
index b980de3..28cdd07 100644
--- a/src/ccid/ccid2040.h
+++ b/src/ccid/ccid2040.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -21,7 +21,7 @@
 #include "file.h"
 #include "pico/unique_id.h"
 #include "pico/util/queue.h"
-#include <string.h> 
+#include <string.h>
 
 #define USB_REQ_CCID        0xA1
 
@@ -55,7 +55,7 @@ extern const uint8_t historical_bytes[];
     }
 #else
 #define DEBUG_PAYLOAD(_p,_s)
-#endif    
+#endif
 
 struct apdu {
     uint8_t *header;
@@ -92,11 +92,11 @@ enum ccid_state {
     CCID_STATE_NOCARD,		/* No card available */
     CCID_STATE_START,		/* Initial */
     CCID_STATE_WAIT,		/* Waiting APDU */
-    
+
     CCID_STATE_EXECUTE,		/* Executing command */
     CCID_STATE_ACK_REQUIRED_0,	/* Ack required (executing)*/
     CCID_STATE_ACK_REQUIRED_1,	/* Waiting user's ACK (execution finished) */
-    
+
     CCID_STATE_EXITED,		/* CCID Thread Terminated */
     CCID_STATE_EXEC_REQUESTED,	/* Exec requested */
 };
diff --git a/src/ccid/ccid_version.h b/src/ccid/ccid_version.h
index f869078..14e986f 100644
--- a/src/ccid/ccid_version.h
+++ b/src/ccid/ccid_version.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/ccid/crypto_utils.c b/src/ccid/crypto_utils.c
index 354bb58..44a8b49 100644
--- a/src/ccid/crypto_utils.c
+++ b/src/ccid/crypto_utils.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -35,12 +35,12 @@ void hash_multi(const uint8_t *input, size_t len, uint8_t output[32]) {
     mbedtls_sha256_init(&ctx);
     int iters = 256;
     pico_unique_board_id_t unique_id;
-    
+
     pico_get_unique_board_id(&unique_id);
-    
+
     mbedtls_sha256_starts (&ctx, 0);
     mbedtls_sha256_update (&ctx, unique_id.id, sizeof(unique_id.id));
-    
+
     while (iters > len)
     {
         mbedtls_sha256_update (&ctx, input, len);
@@ -55,7 +55,7 @@ void hash_multi(const uint8_t *input, size_t len, uint8_t output[32]) {
 void hash256(const uint8_t *input, size_t len, uint8_t output[32]) {
     mbedtls_sha256_context ctx;
     mbedtls_sha256_init(&ctx);
-    
+
     mbedtls_sha256_starts (&ctx, 0);
     mbedtls_sha256_update (&ctx, input, len);
 
@@ -64,7 +64,7 @@ void hash256(const uint8_t *input, size_t len, uint8_t output[32]) {
 }
 
 void generic_hash(mbedtls_md_type_t md, const uint8_t *input, size_t len, uint8_t *output) {
-    mbedtls_md(mbedtls_md_info_from_type(md), input, len, output); 
+    mbedtls_md(mbedtls_md_info_from_type(md), input, len, output);
 }
 
 int aes_encrypt(const uint8_t *key, const uint8_t *iv, int key_size, int mode, uint8_t *data, int len) {
diff --git a/src/ccid/crypto_utils.h b/src/ccid/crypto_utils.h
index 8bccf11..b1e3b60 100644
--- a/src/ccid/crypto_utils.h
+++ b/src/ccid/crypto_utils.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/ccid/eac.c b/src/ccid/eac.c
index f1115f7..78c3331 100644
--- a/src/ccid/eac.c
+++ b/src/ccid/eac.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -94,7 +94,7 @@ int sm_unwrap() {
     bool is87 = false;
     uint16_t tag = 0x0;
     uint8_t *tag_data = NULL, *p = NULL;
-    size_t tag_len = 0;    
+    size_t tag_len = 0;
     while (walk_tlv(apdu.data, apdu.nc, &p, &tag, &tag_len, &tag_data)) {
         if (tag == 0x87 || tag == 0x85) {
             body = tag_data;
@@ -184,7 +184,7 @@ int sm_wrap() {
 int sm_get_le() {
     uint16_t tag = 0x0;
     uint8_t *tag_data = NULL, *p = NULL;
-    size_t tag_len = 0;    
+    size_t tag_len = 0;
     while (walk_tlv(apdu.data, apdu.nc, &p, &tag, &tag_len, &tag_data)) {
         if (tag == 0x97) {
             uint32_t le = 0;
@@ -236,7 +236,7 @@ int sm_verify() {
     size_t mac_len = 0;
     uint16_t tag = 0x0;
     uint8_t *tag_data = NULL, *p = NULL;
-    size_t tag_len = 0;    
+    size_t tag_len = 0;
     while (walk_tlv(apdu.data, apdu.nc, &p, &tag, &tag_len, &tag_data)) {
         if (tag & 0x1) {
             input[input_len++] = tag;
diff --git a/src/ccid/eac.h b/src/ccid/eac.h
index e7d4f94..babca93 100644
--- a/src/ccid/eac.h
+++ b/src/ccid/eac.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/fs/file.c b/src/fs/file.c
index b69c180..4de7abb 100644
--- a/src/fs/file.c
+++ b/src/fs/file.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -44,10 +44,10 @@ void process_fci(const file_t *pe, int fmd) {
         res_APDU[res_APDU_size++] = 0x6f;
         res_APDU[res_APDU_size++] = 0x00; //computed later
     }
-    
+
     res_APDU[res_APDU_size++] = 0x62;
     res_APDU[res_APDU_size++] = 0x00; //computed later
-    
+
     res_APDU[res_APDU_size++] = 0x81;
     res_APDU[res_APDU_size++] = 2;
     if (pe->data) {
@@ -65,7 +65,7 @@ void process_fci(const file_t *pe, int fmd) {
         memset(res_APDU+res_APDU_size, 0, 2);
         res_APDU_size += 2;
     }
-    
+
     res_APDU[res_APDU_size++] = 0x82;
     res_APDU[res_APDU_size++] = 1;
     res_APDU[res_APDU_size] = 0;
@@ -75,7 +75,7 @@ void process_fci(const file_t *pe, int fmd) {
         res_APDU[res_APDU_size++] |= pe->ef_structure & 0x7;
     else if (pe->type == FILE_TYPE_DF)
         res_APDU[res_APDU_size++] |= 0x38;
-    
+
     res_APDU[res_APDU_size++] = 0x83;
     res_APDU[res_APDU_size++] = 2;
     put_uint16_t(pe->fid, res_APDU+res_APDU_size);
@@ -130,7 +130,7 @@ file_t *search_by_name(uint8_t *name, uint16_t namelen) {
 }
 
 file_t *search_by_fid(const uint16_t fid, const file_t *parent, const uint8_t sp) {
-    
+
     for (file_t *p = file_entries; p != file_last; p++) {
         if (p->fid != 0x0000 && p->fid == fid) {
             if (!parent || (parent && is_parent(p, parent))) {
@@ -190,7 +190,7 @@ bool authenticate_action(const file_t *ef, uint8_t op) {
             // PIN required.
         if (isUserAuthenticated) {
             return true;
-        } 
+        }
         else {
             return false;
         }
@@ -220,14 +220,14 @@ void scan_region(bool persistent) {
     for (uintptr_t base = flash_read_uintptr(endp); base >= startp; base = flash_read_uintptr(base)) {
         if (base == 0x0) //all is empty
             break;
-        
+
         uint16_t fid = flash_read_uint16(base+sizeof(uintptr_t)+sizeof(uintptr_t));
         printf("[%x] scan fid %x, len %d\r\n",base,fid,flash_read_uint16(base+sizeof(uintptr_t)+sizeof(uintptr_t)+sizeof(uint16_t)));
         file_t *file = (file_t *)search_by_fid(fid, NULL, SPECIFY_EF);
         if (!file) {
             file = file_new(fid);
         }
-        if (file) 
+        if (file)
             file->data = (uint8_t *)(base+sizeof(uintptr_t)+sizeof(uintptr_t)+sizeof(uint16_t));
         if (flash_read_uintptr(base) == 0x0) {
             break;
@@ -237,7 +237,7 @@ void scan_region(bool persistent) {
 
 void scan_flash() {
     initialize_flash(false); //soft initialization
-    if (*(uintptr_t *)end_data_pool == 0xffffffff && *(uintptr_t *)(end_data_pool+sizeof(uintptr_t)) == 0xffffffff) 
+    if (*(uintptr_t *)end_data_pool == 0xffffffff && *(uintptr_t *)(end_data_pool+sizeof(uintptr_t)) == 0xffffffff)
     {
         printf("First initialization (or corrupted!)\r\n");
         uint8_t empty[sizeof(uintptr_t)*2+sizeof(uint32_t)];
diff --git a/src/fs/file.h b/src/fs/file.h
index ab47d99..4f1a45d 100644
--- a/src/fs/file.h
+++ b/src/fs/file.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/fs/flash.c b/src/fs/flash.c
index 1aa8629..8a9c968 100644
--- a/src/fs/flash.c
+++ b/src/fs/flash.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -132,10 +132,10 @@ int flash_write_data_to_file_offset(file_t *file, const uint8_t *data, uint16_t
             }
         }
     }
-    
+
     uintptr_t new_addr = allocate_free_addr(len, (file->type & FILE_PERSISTENT) == FILE_PERSISTENT);
     //printf("na %x\r\n",new_addr);
-    if (new_addr == 0x0) 
+    if (new_addr == 0x0)
         return CCID_ERR_NO_MEMORY;
     file->data = (uint8_t *)new_addr+sizeof(uintptr_t)+sizeof(uint16_t)+sizeof(uintptr_t); //next addr+fid+prev addr
     flash_program_halfword(new_addr+sizeof(uintptr_t)+sizeof(uintptr_t), file->fid);
diff --git a/src/fs/low_flash.c b/src/fs/low_flash.c
index 9eae346..76bf9fe 100644
--- a/src/fs/low_flash.c
+++ b/src/fs/low_flash.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -66,8 +66,8 @@ void do_flash()
                     flash_range_program(flash_pages[r].address-XIP_BASE, flash_pages[r].page, FLASH_SECTOR_SIZE);
                     restore_interrupts (ints);
                     while (multicore_lockout_end_timeout_us(1000) == false);
-                    //printf("WRITEN %X !\r\n",flash_pages[r].address);                    
-                    
+                    //printf("WRITEN %X !\r\n",flash_pages[r].address);
+
                     flash_pages[r].ready = false;
                     ready_pages--;
                 }
@@ -139,10 +139,10 @@ page_flash_t *find_free_page(uintptr_t addr) {
 
 int flash_program_block(uintptr_t addr, const uint8_t *data, size_t len) {
     page_flash_t *p = NULL;
-    
+
     if (!data || len == 0)
         return CCID_ERR_NULL_PARAM;
-    
+
     mutex_enter_blocking(&mtx_flash);
     if (ready_pages == TOTAL_FLASH_PAGES) {
         mutex_exit(&mtx_flash);
@@ -174,7 +174,7 @@ int flash_program_uintptr (uintptr_t addr, uintptr_t data) {
 }
 
 uint8_t *flash_read(uintptr_t addr) {
-    uintptr_t addr_alg = addr & -FLASH_SECTOR_SIZE;   
+    uintptr_t addr_alg = addr & -FLASH_SECTOR_SIZE;
     mutex_enter_blocking(&mtx_flash);
     if (ready_pages > 0) {
         for (int r = 0; r < TOTAL_FLASH_PAGES; r++)
@@ -213,7 +213,7 @@ uint8_t flash_read_uint8(uintptr_t addr) {
 
 int flash_erase_page (uintptr_t addr, size_t page_size) {
     page_flash_t *p = NULL;
-    
+
     mutex_enter_blocking(&mtx_flash);
     if (ready_pages == TOTAL_FLASH_PAGES) {
         mutex_exit(&mtx_flash);
@@ -229,7 +229,7 @@ int flash_erase_page (uintptr_t addr, size_t page_size) {
     p->ready = false;
     p->page_size = page_size;
     mutex_exit(&mtx_flash);
-    
+
     return CCID_OK;
 }
 
diff --git a/src/rng/neug.c b/src/rng/neug.c
index f471d67..c9fbeef 100644
--- a/src/rng/neug.c
+++ b/src/rng/neug.c
@@ -1,20 +1,20 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
- 
+
 //Part of the code is taken from GnuK (GPLv3)
 
 
@@ -72,7 +72,7 @@ static int ep_process () {
     random_word *= 0x00000100000001B3;
     if (++ep_round == 8) {
         ep_round = 0;
-        return 2; //2 words 
+        return 2; //2 words
     }
     return 0;
 }
@@ -122,7 +122,7 @@ static struct rng_rb the_ring_buffer;
 
 void *neug_task() {
     struct rng_rb *rb = &the_ring_buffer;
- 
+
     int n;
 
     if ((n = ep_process())) {
@@ -147,15 +147,15 @@ void neug_init(uint32_t *buf, uint8_t size) {
     struct rng_rb *rb = &the_ring_buffer;
 
     rb_init(rb, buf, size);
-    
+
     adc_start();
-    
+
     ep_init();
 }
 
 void neug_flush(void) {
     struct rng_rb *rb = &the_ring_buffer;
-    
+
     while (!rb->empty)
         rb_del (rb);
 }
diff --git a/src/rng/neug.h b/src/rng/neug.h
index 2ced6e3..f023ba6 100644
--- a/src/rng/neug.h
+++ b/src/rng/neug.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/rng/random.c b/src/rng/random.c
index 62531b5..b04af1f 100644
--- a/src/rng/random.c
+++ b/src/rng/random.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
diff --git a/src/rng/random.h b/src/rng/random.h
index 446edbf..7652514 100644
--- a/src/rng/random.h
+++ b/src/rng/random.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -35,4 +35,4 @@ void random_get_salt (uint8_t *p);
 /* iterator returning a byta at a time */
 int random_gen (void *arg, unsigned char *output, size_t output_len);
 
-#endif 
\ No newline at end of file
+#endif
\ No newline at end of file
diff --git a/src/usb/tusb_config.h b/src/usb/tusb_config.h
index 87ec6bd..88d5868 100644
--- a/src/usb/tusb_config.h
+++ b/src/usb/tusb_config.h
@@ -106,7 +106,7 @@
 
 #define CFG_TUD_VENDOR_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
 #define CFG_TUD_VENDOR_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
-    
+
 #include "pico/types.h"
 static inline uint16_t tu_u32_high16(uint32_t ui32) { return (uint16_t) (ui32 >> 16); }
 static inline uint16_t tu_u32_low16 (uint32_t ui32) { return (uint16_t) (ui32 & 0x0000ffffu); }
diff --git a/src/usb/usb.c b/src/usb/usb.c
index 7d7bc90..5076a55 100644
--- a/src/usb/usb.c
+++ b/src/usb/usb.c
@@ -1,18 +1,18 @@
 
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -89,7 +89,7 @@ uint16_t usb_read(uint8_t *buffer, size_t buffer_size) {
         r_offset += size;
         if (r_offset == w_offset) {
             r_offset = w_offset = 0;
-        }            
+        }
         return size;
     }
     return 0;
diff --git a/src/usb/usb_descriptors.c b/src/usb/usb_descriptors.c
index 98dc728..7c2d517 100644
--- a/src/usb/usb_descriptors.c
+++ b/src/usb/usb_descriptors.c
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
@@ -90,7 +90,7 @@ uint8_t const * tud_descriptor_device_cb(void)
     return (uint8_t const *) &desc_device;
 }
 
-tusb_desc_interface_t const desc_interface = 
+tusb_desc_interface_t const desc_interface =
 {
     .bLength            = sizeof(tusb_desc_interface_t),
     .bDescriptorType    = TUSB_DESC_INTERFACE,
@@ -107,7 +107,7 @@ tusb_desc_interface_t const desc_interface =
 // Configuration Descriptor
 //--------------------------------------------------------------------+
 
-tusb_desc_configuration_t const desc_config  = 
+tusb_desc_configuration_t const desc_config  =
 {
     .bLength             = sizeof(tusb_desc_configuration_t),
   	.bDescriptorType     = TUSB_DESC_CONFIGURATION,
@@ -119,7 +119,7 @@ tusb_desc_configuration_t const desc_config  =
   	.bMaxPower           = TUSB_DESC_CONFIG_POWER_MA(MAX_USB_POWER+1),
 };
 
-tusb_desc_endpoint_t const desc_ep1 = 
+tusb_desc_endpoint_t const desc_ep1 =
 {
     .bLength             = sizeof(tusb_desc_endpoint_t),
 	.bDescriptorType     = TUSB_DESC_ENDPOINT,
@@ -129,7 +129,7 @@ tusb_desc_endpoint_t const desc_ep1 =
 	.bInterval           = 0
 };
 
-tusb_desc_endpoint_t const desc_ep2 = 
+tusb_desc_endpoint_t const desc_ep2 =
 {
     .bLength             = sizeof(tusb_desc_endpoint_t),
 	.bDescriptorType     = TUSB_DESC_ENDPOINT,
@@ -144,7 +144,7 @@ static uint8_t desc_config_extended[sizeof(tusb_desc_configuration_t) + sizeof(t
 uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
 {
     (void) index; // for multiple configurations
-  
+
     static uint8_t initd = 0;
     if (initd == 0)
     {
@@ -205,7 +205,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
         // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
         // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
 
-        if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) 
+        if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) )
             return NULL;
 
         const char* str = string_desc_arr[index];
@@ -218,7 +218,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
         }
 
         chr_count = strlen(str);
-        if ( chr_count > 31 ) 
+        if ( chr_count > 31 )
             chr_count = 31;
 
         // Convert ASCII string into UTF-16
diff --git a/src/usb/usb_descriptors.h b/src/usb/usb_descriptors.h
index ac36e06..c9d482a 100644
--- a/src/usb/usb_descriptors.h
+++ b/src/usb/usb_descriptors.h
@@ -1,17 +1,17 @@
-/* 
+/*
  * This file is part of the Pico CCID distribution (https://github.com/polhenarejos/pico-ccid).
  * Copyright (c) 2022 Pol Henarejos.
- * 
- * This program is free software: you can redistribute it and/or modify  
- * it under the terms of the GNU General Public License as published by  
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, version 3.
  *
- * This program is distributed in the hope that it will be useful, but 
- * WITHOUT ANY WARRANTY; without even the implied warranty of 
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License 
+ * You should have received a copy of the GNU General Public License
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */