]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/appmain.c
Merge branch 'master' of https://github.com/iceman1001/proxmark3
[proxmark3-svn] / armsrc / appmain.c
index 3dcf48cc30ccb9a5dba093c5fdcaca5e60da0e5b..22657815ebaeb398a5e64c8d899cee40fa953c62 100644 (file)
@@ -26,6 +26,7 @@
 #include "lfsampling.h"
 #include "BigBuf.h"
 #include "mifareutil.h"
+#include "pcf7931.h"
 #ifdef WITH_LCD
  #include "LCD.h"
 #endif
@@ -33,6 +34,7 @@
 // Craig Young - 14a stand-alone code
 #ifdef WITH_ISO14443a_StandAlone
  #include "iso14443a.h"
+ #include "protocols.h"
 #endif
 
 #define abs(x) ( ((x)<0) ? -(x) : (x) )
@@ -298,6 +300,36 @@ void SendVersion(void)
        uint32_t compressed_data_section_size = common_area.arg1;
        cmd_send(CMD_ACK, *(AT91C_DBGU_CIDR), text_and_rodata_section_size + compressed_data_section_size, 0, VersionString, strlen(VersionString));
 }
+
+// measure the USB Speed by sending SpeedTestBufferSize bytes to client and measuring the elapsed time.
+// Note: this mimics GetFromBigbuf(), i.e. we have the overhead of the UsbCommand structure included.
+void printUSBSpeed(void) 
+{
+       Dbprintf("USB Speed:");
+       Dbprintf("  Sending USB packets to client...");
+
+       #define USB_SPEED_TEST_MIN_TIME 1500    // in milliseconds
+       uint8_t *test_data = BigBuf_get_addr();
+       uint32_t end_time;
+
+       uint32_t start_time = end_time = GetTickCount();
+       uint32_t bytes_transferred = 0;
+
+       LED_B_ON();
+       while(end_time < start_time + USB_SPEED_TEST_MIN_TIME) {
+               cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, 0, USB_CMD_DATA_SIZE, 0, test_data, USB_CMD_DATA_SIZE);
+               end_time = GetTickCount();
+               bytes_transferred += USB_CMD_DATA_SIZE;
+       }
+       LED_B_OFF();
+
+       Dbprintf("  Time elapsed:      %dms", end_time - start_time);
+       Dbprintf("  Bytes transferred: %d", bytes_transferred);
+       Dbprintf("  USB Transfer Speed PM3 -> Client = %d Bytes/s", 
+               1000 * bytes_transferred / (end_time - start_time));
+
+}
+       
 /**
   * Prints runtime information about the PM3.
 **/
@@ -306,16 +338,19 @@ void SendStatus(void)
        BigBuf_print_status();
        Fpga_print_status();
        printConfig(); //LF Sampling config
+       printUSBSpeed();
        Dbprintf("Various");
-       Dbprintf("  MF_DBGLEVEL......%d", MF_DBGLEVEL);
-       Dbprintf("  ToSendMax........%d",ToSendMax);
-       Dbprintf("  ToSendBit........%d",ToSendBit);
+       Dbprintf("  MF_DBGLEVEL........%d", MF_DBGLEVEL);
+       Dbprintf("  ToSendMax..........%d", ToSendMax);
+       Dbprintf("  ToSendBit..........%d", ToSendBit);
+       Dbprintf("  ToSend BUFFERSIZE..%d", TOSEND_BUFFER_SIZE);
+
+       cmd_send(CMD_ACK,1,0,0,0,0);
 }
 
 #if defined(WITH_ISO14443a_StandAlone) || defined(WITH_LF)
 
 #define OPTS 2
-
 void StandAloneMode()
 {
        DbpString("Stand-alone mode! No PC necessary.");
@@ -329,13 +364,9 @@ void StandAloneMode()
        LED(LED_GREEN,  200);
        LED(LED_ORANGE, 200);
        LED(LED_RED,    200);
-
 }
-
 #endif
 
-
-
 #ifdef WITH_ISO14443a_StandAlone
 void StandAloneMode14a()
 {
@@ -352,6 +383,8 @@ void StandAloneMode14a()
        uint32_t uid_tmp2 = 0;
        iso14a_card_select_t hi14a_card[OPTS];
 
+       uint8_t params = (MAGIC_SINGLE | MAGIC_DATAIN);
+                                       
        LED(selected + 1, 0);
 
        for (;;)
@@ -394,7 +427,7 @@ void StandAloneMode14a()
                                                SpinDelay(300);
                                        }
                                }
-                               if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid))
+                               if (!iso14443a_select_card(uid, &hi14a_card[selected], &cuid, true, 0))
                                        continue;
                                else
                                {
@@ -445,87 +478,84 @@ void StandAloneMode14a()
                else if (iGotoClone==1)
                {
                        iGotoClone=0;
-                                       LEDsoff();
-                                       LED(selected + 1, 0);
-                                       LED(LED_ORANGE, 250);
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       LED(LED_ORANGE, 250);
 
+                       // record
+                       Dbprintf("Preparing to Clone card [Bank: %x]; uid: %08x", selected, uid_1st[selected]);
 
-                                       // record
-                                       Dbprintf("Preparing to Clone card [Bank: %x]; uid: %08x", selected, uid_1st[selected]);
+                       // wait for button to be released
+                       // Delay cloning until card is in place
+                       while(BUTTON_PRESS())
+                               WDT_HIT();
 
-                                       // wait for button to be released
-                                       while(BUTTON_PRESS())
-                                       {
-                                               // Delay cloning until card is in place
-                                               WDT_HIT();
-                                       }
-                                       Dbprintf("Starting clone. [Bank: %u]", selected);
-                                       // need this delay to prevent catching some weird data
-                                       SpinDelay(500);
-                                       // Begin clone function here:
-                                       /* Example from client/mifarehost.c for commanding a block write for "magic Chinese" cards:
-                                                       UsbCommand c = {CMD_MIFARE_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};
-                                                       memcpy(c.d.asBytes, data, 16);
-                                                       SendCommand(&c);
-
-                                               Block read is similar:
-                                                       UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, 0, blockNo}};
-                                               We need to imitate that call with blockNo 0 to set a uid.
-
-                                               The get and set commands are handled in this file:
-                                                       // Work with "magic Chinese" card
-                                                       case CMD_MIFARE_CSETBLOCK:
-                                                                       MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
-                                                                       break;
-                                                       case CMD_MIFARE_CGETBLOCK:
-                                                                       MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
-                                                                       break;
-
-                                               mfCSetUID provides example logic for UID set workflow:
-                                                       -Read block0 from card in field with MifareCGetBlock()
-                                                       -Configure new values without replacing reserved bytes
-                                                                       memcpy(block0, uid, 4); // Copy UID bytes from byte array
-                                                                       // Mifare UID BCC
-                                                                       block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // BCC on byte 5
-                                                                       Bytes 5-7 are reserved SAK and ATQA for mifare classic
-                                                       -Use mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER) to write it
-                                       */
-                                       uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0}, testBlock0[16] = {0};
-                                       // arg0 = Flags == CSETBLOCK_SINGLE_OPER=0x1F, arg1=returnSlot, arg2=blockNo
-                       MifareCGetBlock(0x3F, 1, 0, oldBlock0);
+                       Dbprintf("Starting clone. [Bank: %u]", selected);
+                       // need this delay to prevent catching some weird data
+                       SpinDelay(500);
+                       // Begin clone function here:
+                       /* Example from client/mifarehost.c for commanding a block write for "magic Chinese" cards:
+                                       UsbCommand c = {CMD_MIFARE_CSETBLOCK, {params & (0xFE | (uid == NULL ? 0:1)), blockNo, 0}};
+                                       memcpy(c.d.asBytes, data, 16);
+                                       SendCommand(&c);
+
+                               Block read is similar:
+                                       UsbCommand c = {CMD_MIFARE_CGETBLOCK, {params, blockNo, 0}};
+                               We need to imitate that call with blockNo 0 to set a uid.
+
+                               The get and set commands are handled in this file:
+                                       // Work with "magic Chinese" card
+                                       case CMD_MIFARE_CSETBLOCK:
+                                                       MifareCSetBlock(c->arg[0], c->arg[1], c->d.asBytes);
+                                                       break;
+                                       case CMD_MIFARE_CGETBLOCK:
+                                                       MifareCGetBlock(c->arg[0], c->arg[1], c->d.asBytes);
+                                                       break;
+
+                               mfCSetUID provides example logic for UID set workflow:
+                                       -Read block0 from card in field with MifareCGetBlock()
+                                       -Configure new values without replacing reserved bytes
+                                                       memcpy(block0, uid, 4); // Copy UID bytes from byte array
+                                                       // Mifare UID BCC
+                                                       block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // BCC on byte 5
+                                                       Bytes 5-7 are reserved SAK and ATQA for mifare classic
+                                       -Use mfCSetBlock(0, block0, oldUID, wantWipe, MAGIC_SINGLE) to write it
+                       */
+                       uint8_t oldBlock0[16] = {0}, newBlock0[16] = {0}, testBlock0[16] = {0};
+                       // arg0 = Flags, arg1=blockNo
+                       MifareCGetBlock(params, 0, oldBlock0);
                        if (oldBlock0[0] == 0 && oldBlock0[0] == oldBlock0[1]  && oldBlock0[1] == oldBlock0[2] && oldBlock0[2] == oldBlock0[3]) {
                                Dbprintf("No changeable tag detected. Returning to replay mode for bank[%d]", selected);
                                playing = 1;
                        }
                        else {
-                                       Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0],oldBlock0[1],oldBlock0[2],oldBlock0[3]);
-                                       memcpy(newBlock0,oldBlock0,16);
-                                       // Copy uid_1st for bank (2nd is for longer UIDs not supported if classic)
-
-                                       newBlock0[0] = uid_1st[selected]>>24;
-                                       newBlock0[1] = 0xFF & (uid_1st[selected]>>16);
-                                       newBlock0[2] = 0xFF & (uid_1st[selected]>>8);
-                                       newBlock0[3] = 0xFF & (uid_1st[selected]);
-                                       newBlock0[4] = newBlock0[0]^newBlock0[1]^newBlock0[2]^newBlock0[3];
-                                       // arg0 = needWipe, arg1 = workFlags, arg2 = blockNo, datain
-                                       MifareCSetBlock(0, 0xFF,0, newBlock0);
-                               MifareCGetBlock(0x3F, 1, 0, testBlock0);
-                                       if (memcmp(testBlock0,newBlock0,16)==0)
-                                       {
-                                               DbpString("Cloned successfull!");
-                                               cardRead[selected] = 0; // Only if the card was cloned successfully should we clear it
+                               Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0],oldBlock0[1],oldBlock0[2],oldBlock0[3]);
+                               memcpy(newBlock0,oldBlock0,16);
+                               // Copy uid_1st for bank (2nd is for longer UIDs not supported if classic)
+
+                               newBlock0[0] = uid_1st[selected]>>24;
+                               newBlock0[1] = 0xFF & (uid_1st[selected]>>16);
+                               newBlock0[2] = 0xFF & (uid_1st[selected]>>8);
+                               newBlock0[3] = 0xFF & (uid_1st[selected]);
+                               newBlock0[4] = newBlock0[0]^newBlock0[1]^newBlock0[2]^newBlock0[3];
+
+                               // arg0 = workFlags, arg1 = blockNo, datain
+                               MifareCSetBlock(params, 0, newBlock0);
+                               MifareCGetBlock(params, 0, testBlock0);
+                               
+                               if (memcmp(testBlock0, newBlock0, 16)==0) {
+                                       DbpString("Cloned successfull!");
+                                       cardRead[selected] = 0; // Only if the card was cloned successfully should we clear it
                                        playing = 0;
                                        iGotoRecord = 1;
-                               selected = (selected + 1) % OPTS;
-                               }
-                               else {
+                                       selected = (selected + 1) % OPTS;
+                               } else {
                                        Dbprintf("Clone failed. Back to replay mode on bank[%d]", selected);
                                        playing = 1;
                                }
                        }
                        LEDsoff();
                        LED(selected + 1, 0);
-
                }
                // Change where to record (or begin playing)
                else if (playing==1) // button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
@@ -605,8 +635,7 @@ void SamyRun()
        // Turn on selected LED
        LED(selected + 1, 0);
 
-       for (;;)
-       {
+       for (;;) {
                usb_poll();
                WDT_HIT();
 
@@ -637,49 +666,41 @@ void SamyRun()
                        LEDsoff();
                        LED(selected + 1, 0);
                        // Finished recording
-
                        // If we were previously playing, set playing off
                        // so next button push begins playing what we recorded
-                       playing = 0;
-                       
-                       cardRead = 1;
-       
+                       playing = 0;                    
+                       cardRead = 1;   
                }
+               else if (button_pressed > 0 && cardRead == 1) {
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       LED(LED_ORANGE, 0);
 
-               else if (button_pressed > 0 && cardRead == 1)
-               {
-                                       LEDsoff();
-                                       LED(selected + 1, 0);
-                                       LED(LED_ORANGE, 0);
-
-                                       // record
-                                       Dbprintf("Cloning %x %x %x", selected, high[selected], low[selected]);
+                       // record
+                       Dbprintf("Cloning %x %x %x", selected, high[selected], low[selected]);
 
-                                       // wait for button to be released
-                                       while(BUTTON_PRESS())
-                                               WDT_HIT();
+                       // wait for button to be released
+                       while(BUTTON_PRESS())
+                               WDT_HIT();
 
-                                       /* need this delay to prevent catching some weird data */
-                                       SpinDelay(500);
+                       /* need this delay to prevent catching some weird data */
+                       SpinDelay(500);
 
-                                       CopyHIDtoT55x7(high[selected], low[selected], 0, 0);
-                                       Dbprintf("Cloned %x %x %x", selected, high[selected], low[selected]);
+                       CopyHIDtoT55x7(high[selected], low[selected], 0, 0);
+                       Dbprintf("Cloned %x %x %x", selected, high[selected], low[selected]);
 
-                                       LEDsoff();
-                                       LED(selected + 1, 0);
-                                       // Finished recording
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       // Finished recording
 
-                                       // If we were previously playing, set playing off
-                                       // so next button push begins playing what we recorded
-                                       playing = 0;
-                                       
-                                       cardRead = 0;
-                       
+                       // If we were previously playing, set playing off
+                       // so next button push begins playing what we recorded
+                       playing = 0;                    
+                       cardRead = 0;                   
                }
 
                // Change where to record (or begin playing)
-               else if (button_pressed)
-               {
+               else if (button_pressed) {
                        // Next option if we were previously playing
                        if (playing)
                                selected = (selected + 1) % OPTS;
@@ -696,15 +717,16 @@ void SamyRun()
                                // wait for button to be released
                                while(BUTTON_PRESS())
                                        WDT_HIT();
+                               
                                Dbprintf("%x %x %x", selected, high[selected], low[selected]);
-                               CmdHIDsimTAG(high[selected], low[selected], 0);
+                               CmdHIDsimTAG(high[selected], low[selected], 0);         
                                DbpString("Done playing");
-                               if (BUTTON_HELD(1000) > 0)
-                                       {
+                               
+                               if (BUTTON_HELD(1000) > 0) {
                                        DbpString("Exiting");
                                        LEDsoff();
                                        return;
-                                       }
+                               }
 
                                /* We pressed a button so ignore it here with a delay */
                                SpinDelay(300);
@@ -886,7 +908,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        setSamplingConfig((sample_config *) c->d.asBytes);
                        break;
                case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K:
-                       cmd_send(CMD_ACK,SampleLF(c->arg[0]),0,0,0,0);
+                       cmd_send(CMD_ACK, SampleLF(c->arg[0]),0,0,0,0);
                        break;
                case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K:
                        ModThenAcquireRawAdcSamples125k(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes);
@@ -916,7 +938,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        CmdIOdemodFSK(c->arg[0], 0, 0, 1);
                        break;
                case CMD_IO_CLONE_TAG:
-                       CopyIOtoT55x7(c->arg[0], c->arg[1], c->d.asBytes[0]);
+                       CopyIOtoT55x7(c->arg[0], c->arg[1]);
                        break;
                case CMD_EM410X_DEMOD:
                        CmdEM410xdemod(c->arg[0], 0, 0, 1);
@@ -945,18 +967,22 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        CopyIndala224toT55x7(c->d.asDwords[0], c->d.asDwords[1], c->d.asDwords[2], c->d.asDwords[3], c->d.asDwords[4], c->d.asDwords[5], c->d.asDwords[6]);
                        break;
                case CMD_T55XX_READ_BLOCK:
-                       T55xxReadBlock(c->arg[1], c->arg[2],c->d.asBytes[0]);
+                       T55xxReadBlock(c->arg[0], c->arg[1], c->arg[2]);
                        break;
                case CMD_T55XX_WRITE_BLOCK:
                        T55xxWriteBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes[0]);
-                       cmd_send(CMD_ACK,0,0,0,0,0);
                        break;
-               case CMD_T55XX_READ_TRACE:
-                       T55xxReadTrace();
+               case CMD_T55XX_WAKEUP:
+                       T55xxWakeUp(c->arg[0]);
+                       break;
+               case CMD_T55XX_RESET_READ:
+                       T55xxResetRead();
                        break;
                case CMD_PCF7931_READ:
                        ReadPCF7931();
-                       cmd_send(CMD_ACK,0,0,0,0,0);
+                       break;
+               case CMD_PCF7931_WRITE:
+                       WritePCF7931(c->d.asBytes[0],c->d.asBytes[1],c->d.asBytes[2],c->d.asBytes[3],c->d.asBytes[4],c->d.asBytes[5],c->d.asBytes[6], c->d.asBytes[9], c->d.asBytes[7]-128,c->d.asBytes[8]-128, c->arg[0], c->arg[1], c->arg[2]);
                        break;
                case CMD_EM4X_READ_WORD:
                        EM4xReadWord(c->arg[1], c->arg[2],c->d.asBytes[0]);
@@ -966,7 +992,10 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
                case CMD_AWID_DEMOD_FSK: // Set realtime AWID demodulation
                        CmdAWIDdemodFSK(c->arg[0], 0, 0, 1);
-                        break;
+                       break;
+        case CMD_VIKING_CLONE_TAG:
+                       CopyVikingtoT55xx(c->arg[0], c->arg[1], c->arg[2]);
+            break;
 #endif
 
 #ifdef WITH_HITAG
@@ -1089,6 +1118,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_MIFAREU_WRITEBL:
                        MifareUWriteBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
+               case CMD_MIFARE_ACQUIRE_ENCRYPTED_NONCES:
+                       MifareAcquireEncryptedNonces(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       break;
                case CMD_MIFARE_NESTED:
                        MifareNested(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
                        break;
@@ -1118,10 +1150,10 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        
                // Work with "magic Chinese" card
                case CMD_MIFARE_CSETBLOCK:
-                       MifareCSetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       MifareCSetBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
                case CMD_MIFARE_CGETBLOCK:
-                       MifareCGetBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes);
+                       MifareCGetBlock(c->arg[0], c->arg[1], c->d.asBytes);
                        break;
                case CMD_MIFARE_CIDENT:
                        MifareCIdent();
@@ -1152,7 +1184,6 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        break;
 
                case CMD_MIFARE_COLLECT_NONCES:
-                       MifareCollectNonces(c->arg[0], c->arg[1]);
                        break;
 #endif
 
@@ -1168,11 +1199,34 @@ void UsbPacketReceived(uint8_t *packet, int len)
                        ReaderIClass(c->arg[0]);
                        break;
                case CMD_READER_ICLASS_REPLAY:
-                       ReaderIClass_Replay(c->arg[0], c->d.asBytes);
+                   ReaderIClass_Replay(c->arg[0], c->d.asBytes);
                        break;
        case CMD_ICLASS_EML_MEMSET:
                        emlSet(c->d.asBytes,c->arg[0], c->arg[1]);
                        break;
+               case CMD_ICLASS_WRITEBLOCK:
+                       iClass_WriteBlock(c->arg[0], c->d.asBytes);
+                       break;
+               case CMD_ICLASS_READCHECK:  // auth step 1
+                       iClass_ReadCheck(c->arg[0], c->arg[1]);
+                       break;
+               case CMD_ICLASS_READBLOCK:
+                       iClass_ReadBlk(c->arg[0]);
+                       break;
+               case CMD_ICLASS_AUTHENTICATION: //check
+                       iClass_Authentication(c->d.asBytes);
+                       break;
+               case CMD_ICLASS_DUMP:
+                       iClass_Dump(c->arg[0], c->arg[1]);
+                       break;
+               case CMD_ICLASS_CLONE:
+                       iClass_Clone(c->arg[0], c->arg[1], c->d.asBytes);
+                       break;
+#endif
+#ifdef WITH_HFSNOOP
+               case CMD_HF_SNIFFER:
+                       HfSnoop(c->arg[0], c->arg[1]);
+                       break;
 #endif
 
                case CMD_BUFF_CLEAR:
@@ -1201,8 +1255,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
 
                        LED_B_ON();
                        uint8_t *BigBuf = BigBuf_get_addr();
+                       size_t len = 0;
                        for(size_t i=0; i<c->arg[1]; i += USB_CMD_DATA_SIZE) {
-                               size_t len = MIN((c->arg[1] - i),USB_CMD_DATA_SIZE);
+                               len = MIN((c->arg[1] - i),USB_CMD_DATA_SIZE);
                                cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K,i,len,BigBuf_get_traceLen(),BigBuf+c->arg[0]+i,len);
                        }
                        // Trigger a finish downloading signal with an ACK frame
@@ -1255,8 +1310,7 @@ void UsbPacketReceived(uint8_t *packet, int len)
                case CMD_FINISH_WRITE:
                case CMD_HARDWARE_RESET:
                        usb_disable();
-                       SpinDelay(1000);
-                       SpinDelay(1000);
+                       SpinDelay(2000);
                        AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
                        for(;;) {
                                // We're going to reset, and the bootrom will take control.
@@ -1310,7 +1364,7 @@ void  __attribute__((noreturn)) AppMain(void)
        AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK0;
        // PCK0 is PLL clock / 4 = 96Mhz / 4 = 24Mhz
        AT91C_BASE_PMC->PMC_PCKR[0] = AT91C_PMC_CSS_PLL_CLK |
-               AT91C_PMC_PRES_CLK_4;
+               AT91C_PMC_PRES_CLK_4; //  4 for 24Mhz pck0, 2 for 48 MHZ pck0
        AT91C_BASE_PIOA->PIO_OER = GPIO_PCK0;
 
        // Reset SPI
@@ -1328,7 +1382,7 @@ void  __attribute__((noreturn)) AppMain(void)
        LCDInit();
 #endif
 
-  byte_t rx[sizeof(UsbCommand)];
+       byte_t rx[sizeof(UsbCommand)];
        size_t rx_len;
   
        for(;;) {
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