// 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
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);
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;
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;
return (a + 15) >> 5;
}
-/*
- * Sweeps the useful LF range of the proxmark from
- * 46.8kHz (divisor=255) to 600kHz (divisor=19) and
- * reads the voltage in the antenna: the result is a graph
- * which should clearly show the resonating frequency of your
- * LF antenna ( hopefully around 90 if it is tuned to 125kHz!)
- */
-void SweepLFrange()
+void MeasureAntennaTuning(void)
{
BYTE *dest = (BYTE *)BigBuf;
- BYTE dummy[12];
- int i, peak= 0, ptr= 0;
- double freq;
+ int i, ptr = 0, adcval = 0, peak = 0, peakv = 0, peakf = 0;;
+ int vLf125 = 0, vLf134 = 0, vHf = 0; // in mV
+
+ UsbCommand c;
- // clear buffer
+ DbpString("Measuring antenna characteristics, please wait.");
memset(BigBuf,0,sizeof(BigBuf));
+/*
+ * Sweeps the useful LF range of the proxmark from
+ * 46.8kHz (divisor=255) to 600kHz (divisor=19) and
+ * read the voltage in the antenna, the result left
+ * in the buffer is a graph which should clearly show
+ * the resonating frequency of your LF antenna
+ * ( hopefully around 95 if it is tuned to 125kHz!)
+ */
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
for (i=255; i>19; i--) {
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
SpinDelay(20);
- dest[i] = (137500 * AvgAdc(ADC_CHAN_LF)) >> 18;
+ // Vref = 3.3V, and a 10000:240 voltage divider on the input
+ // can measure voltages up to 137500 mV
+ adcval = ((137500 * AvgAdc(ADC_CHAN_LF)) >> 10);
+ if (i==95) vLf125 = adcval; // voltage at 125Khz
+ if (i==89) vLf134 = adcval; // voltage at 134Khz
+
+ dest[i] = adcval>>8; // scale int to fit in byte for graphing purposes
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;
+ peakv = adcval;
+ peak = dest[i];
+ peakf = i;
+ ptr = i;
}
- 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)
-{
-// Impedances are Zc = 1/(j*omega*C), in ohms
-#define LF_TUNING_CAP_Z 1273 // 1 nF @ 125 kHz
-#define HF_TUNING_CAP_Z 235 // 50 pF @ 13.56 MHz
-
- int vLf125, vLf134, vHf; // in mV
-
- UsbCommand c;
-
- // Let the FPGA drive the low-frequency antenna around 125 kHz.
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER | FPGA_LF_READER_USE_125_KHZ);
- SpinDelay(20);
- vLf125 = AvgAdc(ADC_CHAN_LF);
- // Vref = 3.3V, and a 10000:240 voltage divider on the input
- // can measure voltages up to 137500 mV
- vLf125 = (137500 * vLf125) >> 10;
-
- // Let the FPGA drive the low-frequency antenna around 134 kHz.
- FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER | FPGA_LF_READER_USE_134_KHZ);
- SpinDelay(20);
- vLf134 = AvgAdc(ADC_CHAN_LF);
- // Vref = 3.3V, and a 10000:240 voltage divider on the input
- // can measure voltages up to 137500 mV
- vLf134 = (137500 * vLf134) >> 10;
+ }
// Let the FPGA drive the high-frequency antenna around 13.56 MHz.
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
SpinDelay(20);
- vHf = AvgAdc(ADC_CHAN_HF);
// Vref = 3300mV, and an 10:1 voltage divider on the input
// can measure voltages up to 33000 mV
- vHf = (33000 * vHf) >> 10;
+ vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10;
c.cmd = CMD_MEASURED_ANTENNA_TUNING;
c.ext1 = (vLf125 << 0) | (vLf134 << 16);
c.ext2 = vHf;
- c.ext3 = (LF_TUNING_CAP_Z << 0) | (HF_TUNING_CAP_Z << 16);
+ c.ext3 = peakf | (peakv << 16);
UsbSendPacket((BYTE *)&c, sizeof(c));
}
-void SimulateTagLowFrequency(int period)
+void SimulateTagLowFrequency(int period, int ledcontrol)
{
int i;
BYTE *tab = (BYTE *)BigBuf;
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()) {
// 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;
/*
}
}
- 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;
for(;;) {
WDT_HIT();
- LED_A_ON();
+ if (ledcontrol)
+ LED_A_ON();
if(BUTTON_PRESS()) {
DbpString("Stopped");
- LED_A_OFF();
+ if (ledcontrol)
+ LED_A_OFF();
return;
}
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;
// 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;
}
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;
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;
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
}
case CMD_SIMULATE_TAG_125K:
LED_A_ON();
- SimulateTagLowFrequency(c->ext1);
+ SimulateTagLowFrequency(c->ext1, 1);
LED_A_OFF();
break;
#ifdef WITH_LCD
LCDReset();
break;
#endif
- case CMD_SWEEP_LF:
- SweepLFrange();
+ case CMD_READ_MEM:
+ ReadMem(c->ext1);
break;
-
case CMD_SET_LF_DIVISOR:
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->ext1);
break;
}
}
+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));
SpinDelay(100);
- LED_D_OFF();
- LED_C_OFF();
- LED_B_OFF();
- LED_A_OFF();
+ LED_D_OFF();
+ LED_C_OFF();
+ LED_B_OFF();
+ LED_A_OFF();
UsbStart();
LCDInit();
// test text on different colored backgrounds
- LCDString(" The quick brown fox ", &FONT6x8,1,1+8*0,WHITE ,BLACK );
- LCDString(" jumped over the ", &FONT6x8,1,1+8*1,BLACK ,WHITE );
- LCDString(" lazy dog. ", &FONT6x8,1,1+8*2,YELLOW ,RED );
- LCDString(" AaBbCcDdEeFfGgHhIiJj ", &FONT6x8,1,1+8*3,RED ,GREEN );
- LCDString(" KkLlMmNnOoPpQqRrSsTt ", &FONT6x8,1,1+8*4,MAGENTA,BLUE );
- LCDString("UuVvWwXxYyZz0123456789", &FONT6x8,1,1+8*5,BLUE ,YELLOW);
- LCDString("`-=[]_;',./~!@#$%^&*()", &FONT6x8,1,1+8*6,BLACK ,CYAN );
- LCDString(" _+{}|:\\\"<>? ",&FONT6x8,1,1+8*7,BLUE ,MAGENTA);
+ LCDString(" The quick brown fox ", &FONT6x8,1,1+8*0,WHITE ,BLACK );
+ LCDString(" jumped over the ", &FONT6x8,1,1+8*1,BLACK ,WHITE );
+ LCDString(" lazy dog. ", &FONT6x8,1,1+8*2,YELLOW ,RED );
+ LCDString(" AaBbCcDdEeFfGgHhIiJj ", &FONT6x8,1,1+8*3,RED ,GREEN );
+ LCDString(" KkLlMmNnOoPpQqRrSsTt ", &FONT6x8,1,1+8*4,MAGENTA,BLUE );
+ LCDString("UuVvWwXxYyZz0123456789", &FONT6x8,1,1+8*5,BLUE ,YELLOW);
+ LCDString("`-=[]_;',./~!@#$%^&*()", &FONT6x8,1,1+8*6,BLACK ,CYAN );
+ LCDString(" _+{}|:\\\"<>? ",&FONT6x8,1,1+8*7,BLUE ,MAGENTA);
// color bands
LCDFill(0, 1+8* 8, 132, 8, BLACK);
#endif
for(;;) {
- UsbPoll(FALSE);
+ usbattached = UsbPoll(FALSE);
WDT_HIT();
- }
-}
-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;
-
- WORD start = (WORD)PWM_CH_COUNTER(0);
-
- for(;;) {
- WORD now = (WORD)PWM_CH_COUNTER(0);
- if(now == (WORD)(start + ticks)) {
- return;
- }
- WDT_HIT();
+ if (BUTTON_HELD(1000) > 0)
+ SamyRun();
}
}
-void SpinDelay(int ms)
-{
- int ticks = (48000*ms) >> 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");
+
+ // wait for button to be released
+ while(BUTTON_PRESS())
+ WDT_HIT();
+
+ /* 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");
+ // wait for button to be released
+ while(BUTTON_PRESS())
+ WDT_HIT();
+ DbpIntegers(selected, high[selected], low[selected]);
+ CmdHIDsimTAG(high[selected], low[selected], 0);
+ DbpString("Done playing");
+ if (BUTTON_HELD(1000) > 0)
+ {
+ DbpString("Exiting");
+ LEDsoff();
+ return;
+ }
+
+ /* 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);
+ }
+ else
+ while(BUTTON_PRESS())
+ WDT_HIT();
+ }
}
}
+
// listen for external reader
void ListenReaderField(int limit)
{
- int lf_av, lf_av_new, lf_baseline= -1, lf_count= 0;
- int hf_av, hf_av_new, hf_baseline= -1, hf_count= 0;
+ int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0;
+ int hf_av, hf_av_new, hf_baseline= 0, hf_count= 0;
#define LF_ONLY 1
#define HF_ONLY 2
lf_av= ReadAdc(ADC_CHAN_LF);
- if(limit != HF_ONLY && lf_baseline == -1)
+ if(limit != HF_ONLY)
{
DbpString("LF 125/134 Baseline:");
DbpIntegers(lf_av,0,0);
hf_av= ReadAdc(ADC_CHAN_HF);
- if (limit != LF_ONLY && hf_baseline == -1)
+ if (limit != LF_ONLY)
{
DbpString("HF 13.56 Baseline:");
DbpIntegers(hf_av,0,0);
projects / proxmark3-svn / blobdiff