#include "protocols.h"
#include "usb_cdc.h" // for usb_poll_validate_length
+#ifndef SHORT_COIL
+# define SHORT_COIL() LOW(GPIO_SSC_DOUT)
+#endif
+#ifndef OPEN_COIL
+# define OPEN_COIL() HIGH(GPIO_SSC_DOUT)
+#endif
+
/**
* Function to do a modulation and then get samples.
* @param delay_off
- * @param period_0
- * @param period_1
+ * @param periods 0xFFFF0000 is period_0, 0x0000FFFF is period_1
+ * @param useHighFreg
* @param command
*/
-void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t period_0, uint32_t period_1, uint8_t *command)
+void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t periods, uint32_t useHighFreq, uint8_t *command)
{
+ /* Make sure the tag is reset */
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ SpinDelay(200);
- int divisor_used = 95; // 125 KHz
- // see if 'h' was specified
-
- if (command[strlen((char *) command) - 1] == 'h')
- divisor_used = 88; // 134.8 KHz
-
+ uint16_t period_0 = periods >> 16;
+ uint16_t period_1 = periods & 0xFFFF;
+
+ // 95 == 125 KHz 88 == 124.8 KHz
+ int divisor_used = (useHighFreq) ? 88 : 95;
sample_config sc = { 0,0,1, divisor_used, 0};
setSamplingConfig(&sc);
+
//clear read buffer
BigBuf_Clear_keep_EM();
- /* Make sure the tag is reset */
- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(2500);
-
LFSetupFPGAForADC(sc.divisor, 1);
// And a little more time for the tag to fully power up
- SpinDelay(2000);
+ SpinDelay(50);
// now modulate the reader field
while(*command != '\0' && *command != ' ') {
LED_D_OFF();
SpinDelayUs(delay_off);
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, sc.divisor);
-
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
// now do the read
void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
{
- int i;
+ int i = 0;
uint8_t *tab = BigBuf_get_addr();
- FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_READER_FIELD);
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
- #define SHORT_COIL() LOW(GPIO_SSC_DOUT)
- #define OPEN_COIL() HIGH(GPIO_SSC_DOUT)
-
- i = 0;
for(;;) {
+ WDT_HIT();
+
+ if (ledcontrol) LED_D_ON();
+
//wait until SSC_CLK goes HIGH
while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
- if(BUTTON_PRESS() || usb_poll_validate_length() ) {
- DbpString("Stopped");
- return;
- }
WDT_HIT();
+ if ( usb_poll_validate_length() || BUTTON_PRESS() ) {
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+ return;
+ }
}
- if (ledcontrol) LED_D_ON();
-
+
if(tab[i])
OPEN_COIL();
else
//wait until SSC_CLK goes LOW
while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
- if( BUTTON_PRESS() || usb_poll_validate_length() ) {
- DbpString("Stopped");
- return;
- }
WDT_HIT();
+ if ( usb_poll_validate_length() || BUTTON_PRESS() ) {
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LED_D_OFF();
+ return;
+ }
}
i++;
if(i == period) {
-
i = 0;
if (gap) {
+ WDT_HIT();
SHORT_COIL();
- SpinDelayUs(gap);
+ SpinDelayUs(gap);
}
}
}
// simulate a HID tag until the button is pressed
void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
{
- int n=0, i=0;
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ set_tracing(FALSE);
+
+ int n = 0, i = 0;
/*
HID tag bitstream format
The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits
nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10)
*/
- if (hi>0xFFF) {
+ if (hi > 0xFFF) {
DbpString("Tags can only have 44 bits. - USE lf simfsk for larger tags");
return;
}
fc(8, &n); fc(10, &n); // high-low transition
}
}
-
+ WDT_HIT();
+
if (ledcontrol) LED_A_ON();
SimulateTagLowFrequency(n, 0, ledcontrol);
if (ledcontrol) LED_A_OFF();
// arg1 contains fcHigh and fcLow, arg2 contains invert and clock
void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
{
- int ledcontrol=1;
- int n=0, i=0;
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+
+ // free eventually allocated BigBuf memory
+ BigBuf_free(); BigBuf_Clear_ext(false);
+ clear_trace();
+ set_tracing(FALSE);
+
+ int ledcontrol = 1, n = 0, i = 0;
uint8_t fcHigh = arg1 >> 8;
uint8_t fcLow = arg1 & 0xFF;
uint16_t modCnt = 0;
uint8_t invert = (arg2 >> 8) & 1;
for (i=0; i<size; i++){
- if (BitStream[i] == invert){
+
+ if (BitStream[i] == invert)
fcAll(fcLow, &n, clk, &modCnt);
- } else {
+ else
fcAll(fcHigh, &n, clk, &modCnt);
- }
}
- Dbprintf("Simulating with fcHigh: %d, fcLow: %d, clk: %d, invert: %d, n: %d",fcHigh, fcLow, clk, invert, n);
+ WDT_HIT();
+
+ Dbprintf("Simulating with fcHigh: %d, fcLow: %d, clk: %d, invert: %d, n: %d", fcHigh, fcLow, clk, invert, n);
if (ledcontrol) LED_A_ON();
SimulateTagLowFrequency(n, 0, ledcontrol);
// args clock, ask/man or askraw, invert, transmission separator
void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
{
- int ledcontrol = 1;
- int n=0, i=0;
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ set_tracing(FALSE);
+
+ int ledcontrol = 1, n = 0, i = 0;
uint8_t clk = (arg1 >> 8) & 0xFF;
uint8_t encoding = arg1 & 0xFF;
uint8_t separator = arg2 & 1;
uint8_t invert = (arg2 >> 8) & 1;
- if (encoding==2){ //biphase
- uint8_t phase=0;
+ if (encoding == 2){ //biphase
+ uint8_t phase = 0;
for (i=0; i<size; i++){
biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);
}
- if (phase==1) { //run a second set inverted to keep phase in check
+ if (phase == 1) { //run a second set inverted to keep phase in check
for (i=0; i<size; i++){
biphaseSimBit(BitStream[i]^invert, &n, clk, &phase);
}
else if (separator==1)
Dbprintf("sorry but separator option not yet available");
+ WDT_HIT();
+
Dbprintf("Simulating with clk: %d, invert: %d, encoding: %d, separator: %d, n: %d",clk, invert, encoding, separator, n);
if (ledcontrol) LED_A_ON();
// args clock, carrier, invert,
void CmdPSKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream)
{
- int ledcontrol = 1;
- int n=0, i=0;
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
+ set_tracing(FALSE);
+
+ int ledcontrol = 1, n = 0, i = 0;
uint8_t clk = arg1 >> 8;
uint8_t carrier = arg1 & 0xFF;
uint8_t invert = arg2 & 0xFF;
pskSimBit(carrier, &n, clk, &curPhase, TRUE);
}
}
+
+ WDT_HIT();
+
Dbprintf("Simulating with Carrier: %d, clk: %d, invert: %d, n: %d",carrier, clk, invert, n);
if (ledcontrol) LED_A_ON();
projects / proxmark3-svn / blobdiff