]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/appmain.c
part of readmem function
[proxmark3-svn] / armsrc / appmain.c
index fcb910c9b1bdfcf43d350f24927548f6a783b932..09f11f03670f2a6308b784580f79d56dc0cfd884 100644 (file)
@@ -7,6 +7,7 @@
 
 
 #include <proxmark3.h>
+#include <stdlib.h>
 #include "apps.h"
 #ifdef WITH_LCD
 #include "fonts.h"
@@ -16,6 +17,7 @@
 // The large multi-purpose buffer, typically used to hold A/D samples,
 // maybe pre-processed in some way.
 DWORD BigBuf[16000];
+int usbattached = 0;
 
 //=============================================================================
 // A buffer where we can queue things up to be sent through the FPGA, for
@@ -66,6 +68,10 @@ void ToSendStuffBit(int b)
 
 void DbpString(char *str)
 {
+       /* this holds up stuff unless we're connected to usb */
+//     if (!usbattached)
+//             return;
+       
        UsbCommand c;
        c.cmd = CMD_DEBUG_PRINT_STRING;
        c.ext1 = strlen(str);
@@ -78,6 +84,10 @@ void DbpString(char *str)
 
 void DbpIntegers(int x1, int x2, int x3)
 {
+       /* this holds up stuff unless we're connected to usb */
+//     if (!usbattached)
+//             return;
+
        UsbCommand c;
        c.cmd = CMD_DEBUG_PRINT_INTEGERS;
        c.ext1 = x1;
@@ -143,7 +153,7 @@ void ModThenAcquireRawAdcSamples125k(int delay_off,int period_0,int period_1,BYT
        BOOL at134khz;
 
        // see if 'h' was specified
-       if(command[strlen(command) - 1] == 'h')
+       if(command[strlen((char *) command) - 1] == 'h')
                at134khz= TRUE;
        else
                at134khz= FALSE;
@@ -240,7 +250,9 @@ static int AvgAdc(int ch)
 void SweepLFrange()
 {
        BYTE *dest = (BYTE *)BigBuf;
-       int i;
+       char dummy[12];
+       int i, peak= 0, ptr= 0;
+       double freq;
 
        // clear buffer
        memset(BigBuf,0,sizeof(BigBuf));
@@ -250,7 +262,28 @@ void SweepLFrange()
                FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
                SpinDelay(20);
                dest[i] = (137500 * AvgAdc(ADC_CHAN_LF)) >> 18;
+               if(dest[i] > peak) {
+                       peak= dest[i];
+                       ptr= i;
+                       }
        }
+       dummy[11]= '\0';
+       dummy[10]= 'z';
+       dummy[9]= 'H';
+       dummy[8]= 'k';
+       dummy[7]= ' ';
+       freq= 12000000/(ptr + 1);
+       for(i= 6; i > 3 ; --i) {
+               dummy[i]= '0' + ((int) freq) % 10;
+               freq /= 10;
+               }
+       dummy[3]= '.';
+       for(i= 2; i >= 0 ; --i) {
+               dummy[i]= '0' + ((int) freq) % 10;
+               freq /= 10;
+               }
+       DbpString("Antenna resonates at:");
+       DbpString(dummy);
 }
 
 void MeasureAntennaTuning(void)
@@ -296,7 +329,7 @@ void MeasureAntennaTuning(void)
        UsbSendPacket((BYTE *)&c, sizeof(c));
 }
 
-void SimulateTagLowFrequency(int period)
+void SimulateTagLowFrequency(int period, int ledcontrol)
 {
        int i;
        BYTE *tab = (BYTE *)BigBuf;
@@ -315,21 +348,26 @@ void SimulateTagLowFrequency(int period)
        for(;;) {
                while(!(PIO_PIN_DATA_STATUS & (1<<GPIO_SSC_CLK))) {
                        if(BUTTON_PRESS()) {
+                               DbpString("Stopped");
                                return;
                        }
                        WDT_HIT();
                }
 
-               LED_D_ON();
-               if(tab[i]) {
+               if (ledcontrol)
+                       LED_D_ON();
+
+               if(tab[i])
                        OPEN_COIL();
-               } else {
+               else
                        SHORT_COIL();
-               }
-               LED_D_OFF();
+               
+               if (ledcontrol)
+                       LED_D_OFF();
 
                while(PIO_PIN_DATA_STATUS & (1<<GPIO_SSC_CLK)) {
                        if(BUTTON_PRESS()) {
+                               DbpString("Stopped");
                                return;
                        }
                        WDT_HIT();
@@ -389,7 +427,7 @@ static void fc(int c, int *n) {
 
 // prepare a waveform pattern in the buffer based on the ID given then
 // simulate a HID tag until the button is pressed
-static void CmdHIDsimTAG(int hi, int lo)
+static void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
 {
        int n=0, i=0;
        /*
@@ -435,13 +473,16 @@ static void CmdHIDsimTAG(int hi, int lo)
                }
        }
 
-       LED_A_ON();
-       SimulateTagLowFrequency(n);
-       LED_A_OFF();
+       if (ledcontrol)
+               LED_A_ON();
+       SimulateTagLowFrequency(n, ledcontrol);
+       
+       if (ledcontrol)
+               LED_A_OFF();
 }
 
 // loop to capture raw HID waveform then FSK demodulate the TAG ID from it
-static void CmdHIDdemodFSK(void)
+static void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
 {
        BYTE *dest = (BYTE *)BigBuf;
        int m=0, n=0, i=0, idx=0, found=0, lastval=0;
@@ -461,9 +502,12 @@ static void CmdHIDdemodFSK(void)
 
        for(;;) {
                WDT_HIT();
-               LED_A_ON();
+               if (ledcontrol)
+                       LED_A_ON();
                if(BUTTON_PRESS()) {
-                       LED_A_OFF();
+                       DbpString("Stopped");
+                       if (ledcontrol)
+                               LED_A_OFF();
                        return;
                }
 
@@ -473,7 +517,8 @@ static void CmdHIDdemodFSK(void)
                for(;;) {
                        if(SSC_STATUS & (SSC_STATUS_TX_READY)) {
                                SSC_TRANSMIT_HOLDING = 0x43;
-                               LED_D_ON();
+                               if (ledcontrol)
+                                       LED_D_ON();
                        }
                        if(SSC_STATUS & (SSC_STATUS_RX_READY)) {
                                dest[i] = (BYTE)SSC_RECEIVE_HOLDING;
@@ -481,7 +526,8 @@ static void CmdHIDdemodFSK(void)
                                // threshold essentially we capture zero crossings for later analysis
                                if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
                                i++;
-                               LED_D_OFF();
+                               if (ledcontrol)
+                                       LED_D_OFF();
                                if(i >= m) {
                                        break;
                                }
@@ -580,6 +626,13 @@ static void CmdHIDdemodFSK(void)
                                if (found && (hi|lo)) {
                                        DbpString("TAG ID");
                                        DbpIntegers(hi, lo, (lo>>1)&0xffff);
+                                       /* if we're only looking for one tag */
+                                       if (findone)
+                                       {
+                                               *high = hi;
+                                               *low = lo;
+                                               return;
+                                       }
                                        hi=0;
                                        lo=0;
                                        found=0;
@@ -606,6 +659,13 @@ static void CmdHIDdemodFSK(void)
                                if (found && (hi|lo)) {
                                        DbpString("TAG ID");
                                        DbpIntegers(hi, lo, (lo>>1)&0xffff);
+                                       /* if we're only looking for one tag */
+                                       if (findone)
+                                       {
+                                               *high = hi;
+                                               *low = lo;
+                                               return;
+                                       }
                                        hi=0;
                                        lo=0;
                                        found=0;
@@ -727,12 +787,16 @@ void UsbPacketReceived(BYTE *packet, int len)
                        MeasureAntennaTuning();
                        break;
 
+               case CMD_LISTEN_READER_FIELD:
+                       ListenReaderField(c->ext1);
+                       break;
+
                case CMD_HID_DEMOD_FSK:
-                       CmdHIDdemodFSK();                               // Demodulate HID tag
+                       CmdHIDdemodFSK(0, 0, 0, 1);                             // Demodulate HID tag
                        break;
 
                case CMD_HID_SIM_TAG:
-                       CmdHIDsimTAG(c->ext1, c->ext2);                                 // Simulate HID tag by ID
+                       CmdHIDsimTAG(c->ext1, c->ext2, 1);                                      // Simulate HID tag by ID
                        break;
 
                case CMD_FPGA_MAJOR_MODE_OFF:           // ## FPGA Control
@@ -761,7 +825,7 @@ void UsbPacketReceived(BYTE *packet, int len)
                }
                case CMD_SIMULATE_TAG_125K:
                        LED_A_ON();
-                       SimulateTagLowFrequency(c->ext1);
+                       SimulateTagLowFrequency(c->ext1, 1);
                        LED_A_OFF();
                        break;
 #ifdef WITH_LCD
@@ -769,6 +833,9 @@ void UsbPacketReceived(BYTE *packet, int len)
                        LCDReset();
                        break;
 #endif
+               case CMD_READ_MEM:
+                       ReadMem(c->ext1);
+                       break;
                case CMD_SWEEP_LF:
                        SweepLFrange();
                        break;
@@ -800,6 +867,17 @@ void UsbPacketReceived(BYTE *packet, int len)
        }
 }
 
+void ReadMem(int addr)
+{
+       const DWORD *data = ((DWORD *)addr);
+       int i;
+       
+       DbpString("Reading memory at address");
+       DbpIntegers(0, 0, addr);
+       for (i = 0; i < 8; i+= 2)
+               DbpIntegers(0, data[i], data[i+1]);
+}
+
 void AppMain(void)
 {
        memset(BigBuf,0,sizeof(BigBuf));
@@ -856,51 +934,189 @@ void AppMain(void)
 #endif
 
        for(;;) {
-               UsbPoll(FALSE);
+               usbattached = UsbPoll(FALSE);
                WDT_HIT();
+
+               if (BUTTON_HELD(1000) > 0)
+                       SamyRun();
        }
 }
 
-void SpinDelayUs(int us)
-{
-       int ticks = (48*us) >> 10;
 
-       // Borrow a PWM unit for my real-time clock
-       PWM_ENABLE = PWM_CHANNEL(0);
-       // 48 MHz / 1024 gives 46.875 kHz
-       PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10);
-       PWM_CH_DUTY_CYCLE(0) = 0;
-       PWM_CH_PERIOD(0) = 0xffff;
+// samy's sniff and repeat routine
+void SamyRun()
+{
+       DbpString("Stand-alone mode! No PC necessary.");
 
-       WORD start = (WORD)PWM_CH_COUNTER(0);
+       // 3 possible options? no just 2 for now
+#define OPTS 2
 
-       for(;;) {
-               WORD now = (WORD)PWM_CH_COUNTER(0);
-               if(now == (WORD)(start + ticks)) {
-                       return;
-               }
+       int high[OPTS], low[OPTS];
+       
+       // Oooh pretty -- notify user we're in elite samy mode now
+       LED(LED_RED,    200);
+       LED(LED_ORANGE, 200);
+       LED(LED_GREEN,  200);
+       LED(LED_ORANGE, 200);
+       LED(LED_RED,    200);
+       LED(LED_ORANGE, 200);
+       LED(LED_GREEN,  200);
+       LED(LED_ORANGE, 200);
+       LED(LED_RED,    200);
+       
+       int selected = 0;
+       int playing = 0;
+       
+       // Turn on selected LED
+       LED(selected + 1, 0);
+       
+       for (;;)
+       {
+               usbattached = UsbPoll(FALSE);
                WDT_HIT();
+               
+               // Was our button held down or pressed?
+               int button_pressed = BUTTON_HELD(1000);
+               SpinDelay(300);
+               
+               // Button was held for a second, begin recording
+               if (button_pressed > 0)
+               {
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       LED(LED_RED2, 0);
+                                               
+                       // record
+                       DbpString("Starting recording");
+                       
+                       /* need this delay to prevent catching some weird data */
+                       SpinDelay(500);
+                       CmdHIDdemodFSK(1, &high[selected], &low[selected], 0);
+                       DbpString("Recorded");
+                       DbpIntegers(selected, high[selected], low[selected]);
+                       
+                       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;
+               }
+               
+               // Change where to record (or begin playing)
+               else if (button_pressed)
+               {
+                       // Next option if we were previously playing
+                       if (playing)
+                               selected = (selected + 1) % OPTS;
+                       playing = !playing;
+                       
+                       LEDsoff();
+                       LED(selected + 1, 0);
+                       
+                       // Begin transmitting
+                       if (playing)
+                       {
+                               LED(LED_GREEN, 0);
+                               DbpString("Playing");
+                               DbpIntegers(selected, high[selected], low[selected]);
+                               CmdHIDsimTAG(high[selected], low[selected], 0);
+                               DbpString("Done playing");
+                               
+                               /* We pressed a button so ignore it here with a delay */
+                               SpinDelay(300);
+                               
+                               // when done, we're done playing, move to next option
+                               selected = (selected + 1) % OPTS;
+                               playing = !playing;
+                               LEDsoff();
+                               LED(selected + 1, 0);
+                       }
+               }
        }
 }
 
-void SpinDelay(int ms)
+
+// listen for external reader 
+void ListenReaderField(int limit)
 {
-       int ticks = (48000*ms) >> 10;
+       int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0;
+       int hf_av, hf_av_new,  hf_baseline= 0, hf_count= 0;
 
-       // Borrow a PWM unit for my real-time clock
-       PWM_ENABLE = PWM_CHANNEL(0);
-       // 48 MHz / 1024 gives 46.875 kHz
-       PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10);
-       PWM_CH_DUTY_CYCLE(0) = 0;
-       PWM_CH_PERIOD(0) = 0xffff;
+#define LF_ONLY                1
+#define HF_ONLY                2
 
-       WORD start = (WORD)PWM_CH_COUNTER(0);
+       LED_A_OFF();
+       LED_B_OFF();
+       LED_C_OFF();
+       LED_D_OFF();
 
-       for(;;) {
-               WORD now = (WORD)PWM_CH_COUNTER(0);
-               if(now == (WORD)(start + ticks)) {
-                       return;
+       lf_av= ReadAdc(ADC_CHAN_LF);
+
+       if(limit != HF_ONLY) 
+               {
+               DbpString("LF 125/134 Baseline:");
+               DbpIntegers(lf_av,0,0);
+               lf_baseline= lf_av;
+               }
+
+       hf_av= ReadAdc(ADC_CHAN_HF);
+
+
+       if (limit != LF_ONLY) 
+               {
+               DbpString("HF 13.56 Baseline:");
+               DbpIntegers(hf_av,0,0);
+               hf_baseline= hf_av;
                }
+
+       for(;;) 
+               {
+               if(BUTTON_PRESS()) 
+                       {
+                       DbpString("Stopped");
+                       LED_B_OFF();
+                       LED_D_OFF();
+                       return;
+                       }
                WDT_HIT();
-       }
+
+
+               if (limit != HF_ONLY) 
+                       {
+                       if (abs(lf_av - lf_baseline) > 10)
+                               LED_D_ON();
+                       else
+                               LED_D_OFF();
+                       ++lf_count;
+                       lf_av_new= ReadAdc(ADC_CHAN_LF);
+                       // see if there's a significant change
+                       if(abs(lf_av - lf_av_new) > 10) 
+                               {
+                               DbpString("LF 125/134 Field Change:");
+                               DbpIntegers(lf_av,lf_av_new,lf_count);
+                               lf_av= lf_av_new;
+                               lf_count= 0;
+                               }
+                       }
+
+               if (limit != LF_ONLY) 
+                       {
+                       if (abs(hf_av - hf_baseline) > 10)
+                               LED_B_ON();
+                       else
+                               LED_B_OFF();
+                       ++hf_count;
+                       hf_av_new= ReadAdc(ADC_CHAN_HF);
+                       // see if there's a significant change
+                       if(abs(hf_av - hf_av_new) > 10) 
+                               {
+                               DbpString("HF 13.56 Field Change:");
+                               DbpIntegers(hf_av,hf_av_new,hf_count);
+                               hf_av= hf_av_new;
+                               hf_count= 0;
+                               }
+                       }
+               }
 }
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