*/
void ReadTItag(void)
{
+ StartTicks();
// some hardcoded initial params
// when we read a TI tag we sample the zerocross line at 2Mhz
// TI tags modulate a 1 as 16 cycles of 123.2Khz
DbpString("Info: CRC is good");
}
}
+ StopTicks();
}
void WriteTIbyte(uint8_t b)
HIGH(GPIO_SSC_DOUT);
// Charge TI tag for 50ms.
- SpinDelay(50);
+ WaitMS(50);
// stop modulating antenna and listen
LOW(GPIO_SSC_DOUT);
// if not provided a valid crc will be computed from the data and written.
void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
{
+ StartTicks();
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
if(crc == 0) {
crc = update_crc16(crc, (idlo)&0xff);
// modulate antenna
HIGH(GPIO_SSC_DOUT);
- SpinDelay(50); // charge time
+ WaitMS(50); // charge time
WriteTIbyte(0xbb); // keyword
WriteTIbyte(0xeb); // password
WriteTIbyte(0x00); // write frame lo
WriteTIbyte(0x03); // write frame hi
HIGH(GPIO_SSC_DOUT);
- SpinDelay(50); // programming time
+ WaitMS(50); // programming time
LED_A_OFF();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
DbpString("Now use `lf ti read` to check");
+ StopTicks();
}
void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
{
int i = 0;
- uint8_t *tab = BigBuf_get_addr();
+ uint8_t *buf = BigBuf_get_addr();
+ FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
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;
+ StartTicks();
+
for(;;) {
WDT_HIT();
if (ledcontrol) LED_D_ON();
- //wait until SSC_CLK goes HIGH
+ // wait until SSC_CLK goes HIGH
+ // used as a simple detection of a reader field?
while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) {
WDT_HIT();
- if ( usb_poll_validate_length() || BUTTON_PRESS() ) {
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- LED_D_OFF();
- return;
- }
+ if ( usb_poll_validate_length() || BUTTON_PRESS() )
+ goto OUT;
}
- if(tab[i])
+ if(buf[i])
OPEN_COIL();
else
SHORT_COIL();
//wait until SSC_CLK goes LOW
while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) {
WDT_HIT();
- if ( usb_poll_validate_length() || BUTTON_PRESS() ) {
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- LED_D_OFF();
- return;
- }
+ if ( usb_poll_validate_length() || BUTTON_PRESS() )
+ goto OUT;
}
i++;
}
}
}
+OUT:
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ StopTicks();
+ LED_D_OFF();
+ return;
}
#define DEBUG_FRAME_CONTENTS 1
* Q5 tags seems to have issues when these values changes.
*/
-#define START_GAP 50*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (or 15fc)
-#define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc)
-#define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc)
-#define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc) 432 for T55x7; 448 for E5550
+#define START_GAP 50*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (15fc)
+#define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (10fc)
+#define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (24fc)
+#define WRITE_1 54*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (56fc) 432 for T55x7; 448 for E5550
#define READ_GAP 15*8
// VALUES TAKEN FROM EM4x function: SendForward
// WRITE_1 = 256 32*8; (32*8)
// These timings work for 4469/4269/4305 (with the 55*8 above)
-// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);
+// WRITE_0 = 23*8 , 9*8
// Sam7s has several timers, we will use the source TIMER_CLOCK1 (aka AT91C_TC_CLKS_TIMER_DIV1_CLOCK)
// TIMER_CLOCK1 = MCK/2, MCK is running at 48 MHz, Timer is running at 48/2 = 24 MHz
// T0 = TIMER_CLOCK1 / 125000 = 192
// 1 Cycle = 8 microseconds(us) == 1 field clock
-void TurnReadLFOn(int delay) {
+// new timer:
+// = 1us = 1.5ticks
+// 1fc = 8us = 12ticks
+void TurnReadLFOn(uint32_t delay) {
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);
// measure antenna strength.
// Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550,
// so wait a little more)
TurnReadLFOn(20 * 1000);
- //could attempt to do a read to confirm write took
- // as the tag should repeat back the new block
- // until it is reset, but to confirm it we would
- // need to know the current block 0 config mode
+
+ //could attempt to do a read to confirm write took
+ // as the tag should repeat back the new block
+ // until it is reset, but to confirm it we would
+ // need to know the current block 0 config mode
// turn field off
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
//-----------------------------------
// EM4469 / EM4305 routines
//-----------------------------------
-#define FWD_CMD_LOGIN 0xC //including the even parity, binary mirrored
-#define FWD_CMD_WRITE 0xA
-#define FWD_CMD_READ 0x9
+#define FWD_CMD_LOGIN 0xC //including the even parity, binary mirrored
+#define FWD_CMD_WRITE 0xA
+#define FWD_CMD_READ 0x9
#define FWD_CMD_DISABLE 0x5
uint8_t forwardLink_data[64]; //array of forwarded bits
// WRITE_1 = 256 32*8; (32*8)
// These timings work for 4469/4269/4305 (with the 55*8 above)
-// WRITE_0 = 23*8 , 9*8 SpinDelayUs(23*8);
+// WRITE_0 = 23*8 , 9*8
uint8_t Prepare_Cmd( uint8_t cmd ) {
else {
//These timings work for 4469/4269/4305 (with the 55*8 above)
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
- WaitUS(23*8); //16-4 cycles off (8us each) // ICEMAN: problem with (us) clock is 21.3us increments
+ WaitUS(16*8); //16-4 cycles off (8us each) // ICEMAN: problem with (us) clock is 21.3us increments
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD);//field on
- WaitUS(9*8); //16 cycles on (8us each) // ICEMAN: problem with (us) clock is 21.3us increments
+ WaitUS(16*8); //16 cycles on (8us each) // ICEMAN: problem with (us) clock is 21.3us increments
}
}
}
void EM4xLogin(uint32_t Password) {
uint8_t fwd_bit_count;
-
forward_ptr = forwardLink_data;
fwd_bit_count = Prepare_Cmd( FWD_CMD_LOGIN );
fwd_bit_count += Prepare_Data( Password&0xFFFF, Password>>16 );
-
SendForward(fwd_bit_count);
//Wait for command to complete
- SpinDelay(20);
+ WaitMS(20);
}
void EM4xReadWord(uint8_t Address, uint32_t Pwd, uint8_t PwdMode) {
uint8_t fwd_bit_count;
uint8_t *dest = BigBuf_get_addr();
- uint16_t bufsize = BigBuf_max_traceLen();
+ uint16_t bufsize = BigBuf_max_traceLen(); // ICEMAN: this tries to fill up all tracelog space
uint32_t i = 0;
// Clear destination buffer before sending the command
fwd_bit_count = Prepare_Cmd( FWD_CMD_READ );
fwd_bit_count += Prepare_Addr( Address );
- // Connect the A/D to the peak-detected low-frequency path.
- SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
- // Now set up the SSC to get the ADC samples that are now streaming at us.
- FpgaSetupSsc();
-
SendForward(fwd_bit_count);
// Now do the acquisition
+ // ICEMAN, change to the one in lfsampling.c
i = 0;
for(;;) {
if (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_TXRDY) {
SendForward(fwd_bit_count);
//Wait for write to complete
- SpinDelay(20);
+ WaitMS(20);
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
LED_D_OFF();
}
projects / proxmark3-svn / blobdiff