#endif
// Craig Young - 14a stand-alone code
-#ifdef WITH_ISO14443a_StandAlone
+#ifdef WITH_ISO14443a
#include "iso14443a.h"
#endif
// return that.
//-----------------------------------------------------------------------------
static int ReadAdc(int ch)
-{
- uint32_t d;
-
- AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
- AT91C_BASE_ADC->ADC_MR =
- ADC_MODE_PRESCALE(63 /* was 32 */) | // ADC_CLK = MCK / ((63+1) * 2) = 48MHz / 128 = 375kHz
- ADC_MODE_STARTUP_TIME(1 /* was 16 */) | // Startup Time = (1+1) * 8 / ADC_CLK = 16 / 375kHz = 42,7us Note: must be > 20us
- ADC_MODE_SAMPLE_HOLD_TIME(15 /* was 8 */); // Sample & Hold Time SHTIM = 15 / ADC_CLK = 15 / 375kHz = 40us
-
+{
// Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value.
- // Both AMPL_LO and AMPL_HI are very high impedance (10MOhm) outputs, the input capacitance of the ADC is 12pF (typical). This results in a time constant
- // of RC = 10MOhm * 12pF = 120us. Even after the maximum configurable sample&hold time of 40us the input capacitor will not be fully charged.
+ // AMPL_HI is are high impedance (10MOhm || 1MOhm) output, the input capacitance of the ADC is 12pF (typical). This results in a time constant
+ // of RC = (0.91MOhm) * 12pF = 10.9us. Even after the maximum configurable sample&hold time of 40us the input capacitor will not be fully charged.
//
// The maths are:
// If there is a voltage v_in at the input, the voltage v_cap at the capacitor (this is what we are measuring) will be
//
- // v_cap = v_in * (1 - exp(-RC/SHTIM)) = v_in * (1 - exp(-3)) = v_in * 0,95 (i.e. an error of 5%)
- //
- // Note: with the "historic" values in the comments above, the error was 34% !!!
-
- AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
+ // v_cap = v_in * (1 - exp(-SHTIM/RC)) = v_in * (1 - exp(-40us/10.9us)) = v_in * 0,97 (i.e. an error of 3%)
- AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
+ AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST;
+ AT91C_BASE_ADC->ADC_MR =
+ ADC_MODE_PRESCALE(63) | // ADC_CLK = MCK / ((63+1) * 2) = 48MHz / 128 = 375kHz
+ ADC_MODE_STARTUP_TIME(1) | // Startup Time = (1+1) * 8 / ADC_CLK = 16 / 375kHz = 42,7us Note: must be > 20us
+ ADC_MODE_SAMPLE_HOLD_TIME(15); // Sample & Hold Time SHTIM = 15 / ADC_CLK = 15 / 375kHz = 40us
- while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch)))
- ;
- d = AT91C_BASE_ADC->ADC_CDR[ch];
+ AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch);
+ AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START;
- return d;
+ while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) {};
+
+ return AT91C_BASE_ADC->ADC_CDR[ch];
}
int AvgAdc(int ch) // was static - merlok
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
+ SpinDelay(50);
+
for (i=255; i>=19; i--) {
WDT_HIT();
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i);
if (i==95) *vLf125 = adcval; // voltage at 125Khz
if (i==89) *vLf134 = adcval; // voltage at 134Khz
- LF_Results[i] = adcval>>8; // scale int to fit in byte for graphing purposes
+ LF_Results[i] = adcval >> 9; // scale int to fit in byte for graphing purposes
if(LF_Results[i] > peak) {
*peakv = adcval;
peak = LF_Results[i];
}
}
- cmd_send(CMD_MEASURED_ANTENNA_TUNING, vLf125 | (vLf134<<16), vHf, peakf | (peakv<<16), LF_Results, 256);
+ cmd_send(CMD_MEASURED_ANTENNA_TUNING, vLf125>>1 | (vLf134>>1<<16), vHf, peakf | (peakv>>1<<16), LF_Results, 256);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_B_OFF();
return;
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
int selected = 0;
- int playing = 0, iGotoRecord = 0, iGotoClone = 0;
- int cardRead[OPTS] = {0};
+ bool playing = false, GotoRecord = false, GotoClone = false;
+ bool cardRead[OPTS] = {false};
uint8_t readUID[10] = {0};
uint32_t uid_1st[OPTS]={0};
uint32_t uid_2nd[OPTS]={0};
WDT_HIT();
SpinDelay(300);
- if (iGotoRecord == 1 || cardRead[selected] == 0)
+ if (GotoRecord || !cardRead[selected])
{
- iGotoRecord = 0;
+ GotoRecord = false;
LEDsoff();
LED(selected + 1, 0);
LED(LED_RED2, 0);
else if (cardRead[(selected+1)%OPTS]) {
Dbprintf("Button press detected but no card in bank[%d] so playing from bank[%d]", selected, (selected+1)%OPTS);
selected = (selected+1)%OPTS;
- break; // playing = 1;
+ break;
}
else {
Dbprintf("Button press detected but no stored tag to play. (Ignoring button)");
LED(selected + 1, 0);
// Next state is replay:
- playing = 1;
+ playing = true;
- cardRead[selected] = 1;
+ cardRead[selected] = true;
}
/* MF Classic UID clone */
- else if (iGotoClone==1)
+ else if (GotoClone)
{
- iGotoClone=0;
+ GotoClone=false;
LEDsoff();
LED(selected + 1, 0);
LED(LED_ORANGE, 250);
MifareCGetBlock(0x3F, 1, 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;
+ playing = true;
}
else {
Dbprintf("UID from target tag: %02X%02X%02X%02X", oldBlock0[0],oldBlock0[1],oldBlock0[2],oldBlock0[3]);
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;
+ cardRead[selected] = false; // Only if the card was cloned successfully should we clear it
+ playing = false;
+ GotoRecord = true;
selected = (selected+1) % OPTS;
}
else {
Dbprintf("Clone failed. Back to replay mode on bank[%d]", selected);
- playing = 1;
+ playing = true;
}
}
LEDsoff();
}
// Change where to record (or begin playing)
- else if (playing==1) // button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
+ else if (playing) // button_pressed == BUTTON_SINGLE_CLICK && cardRead[selected])
{
LEDsoff();
LED(selected + 1, 0);
// Begin transmitting
- if (playing)
- {
- LED(LED_GREEN, 0);
- DbpString("Playing");
- for ( ; ; ) {
- WDT_HIT();
- int button_action = BUTTON_HELD(1000);
- if (button_action == 0) { // No button action, proceed with sim
- uint8_t data[512] = {0}; // in case there is a read command received we shouldn't break
- Dbprintf("Simulating ISO14443a tag with uid[0]: %08x, uid[1]: %08x [Bank: %u]", uid_1st[selected],uid_2nd[selected],selected);
- if (hi14a_card[selected].sak == 8 && hi14a_card[selected].atqa[0] == 4 && hi14a_card[selected].atqa[1] == 0) {
- DbpString("Mifare Classic");
- SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data); // Mifare Classic
- }
- else if (hi14a_card[selected].sak == 0 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 0) {
- DbpString("Mifare Ultralight");
- SimulateIso14443aTag(2,uid_1st[selected],uid_2nd[selected],data); // Mifare Ultralight
- }
- else if (hi14a_card[selected].sak == 20 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 3) {
- DbpString("Mifare DESFire");
- SimulateIso14443aTag(3,uid_1st[selected],uid_2nd[selected],data); // Mifare DESFire
- }
- else {
- Dbprintf("Unrecognized tag type -- defaulting to Mifare Classic emulation");
- SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data);
- }
+ LED(LED_GREEN, 0);
+ DbpString("Playing");
+ for ( ; ; ) {
+ WDT_HIT();
+ int button_action = BUTTON_HELD(1000);
+ if (button_action == 0) { // No button action, proceed with sim
+ uint8_t data[512] = {0}; // in case there is a read command received we shouldn't break
+ Dbprintf("Simulating ISO14443a tag with uid[0]: %08x, uid[1]: %08x [Bank: %u]", uid_1st[selected],uid_2nd[selected],selected);
+ if (hi14a_card[selected].sak == 8 && hi14a_card[selected].atqa[0] == 4 && hi14a_card[selected].atqa[1] == 0) {
+ DbpString("Mifare Classic");
+ SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data); // Mifare Classic
}
- else if (button_action == BUTTON_SINGLE_CLICK) {
- selected = (selected + 1) % OPTS;
- Dbprintf("Done playing. Switching to record mode on bank %d",selected);
- iGotoRecord = 1;
- break;
+ else if (hi14a_card[selected].sak == 0 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 0) {
+ DbpString("Mifare Ultralight");
+ SimulateIso14443aTag(2,uid_1st[selected],uid_2nd[selected],data); // Mifare Ultralight
}
- else if (button_action == BUTTON_HOLD) {
- Dbprintf("Playtime over. Begin cloning...");
- iGotoClone = 1;
- break;
+ else if (hi14a_card[selected].sak == 20 && hi14a_card[selected].atqa[0] == 0x44 && hi14a_card[selected].atqa[1] == 3) {
+ DbpString("Mifare DESFire");
+ SimulateIso14443aTag(3,uid_1st[selected],uid_2nd[selected],data); // Mifare DESFire
+ }
+ else {
+ Dbprintf("Unrecognized tag type -- defaulting to Mifare Classic emulation");
+ SimulateIso14443aTag(1,uid_1st[selected], uid_2nd[selected], data);
}
- WDT_HIT();
}
-
- /* We pressed a button so ignore it here with a delay */
- SpinDelay(300);
- LEDsoff();
- LED(selected + 1, 0);
+ else if (button_action == BUTTON_SINGLE_CLICK) {
+ selected = (selected + 1) % OPTS;
+ Dbprintf("Done playing. Switching to record mode on bank %d",selected);
+ GotoRecord = true;
+ break;
+ }
+ else if (button_action == BUTTON_HOLD) {
+ Dbprintf("Playtime over. Begin cloning...");
+ GotoClone = true;
+ break;
+ }
+ WDT_HIT();
}
- else
- while(BUTTON_PRESS())
- WDT_HIT();
+
+ /* We pressed a button so ignore it here with a delay */
+ SpinDelay(300);
+ LEDsoff();
+ LED(selected + 1, 0);
}
}
}
projects / proxmark3-svn / blobdiff