mirror of
https://github.com/Proxmark/proxmark3.git
synced 2025-08-20 05:13:22 -07:00
Major refactoring of lfops, removed a lot of duplicate code
This commit is contained in:
Martin Holst Swende
parent
046f3dfa7c
commit
69d88ec463
1 changed files with 230 additions and 401 deletions
631
armsrc/lfops.c
631
armsrc/lfops.c
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@ -15,32 +15,8 @@
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#include "crc16.h"
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#include "string.h"
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void AcquireRawAdcSamples125k(int divisor)
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{
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if ( (divisor == 1) || (divisor < 0) || (divisor > 255) )
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
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else if (divisor == 0)
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
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else
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
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// Connect the A/D to the peak-detected low-frequency path.
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SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
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// Give it a bit of time for the resonant antenna to settle.
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SpinDelay(50);
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// Now set up the SSC to get the ADC samples that are now streaming at us.
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FpgaSetupSsc();
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// Now call the acquisition routine
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DoAcquisition125k();
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}
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// split into two routines so we can avoid timing issues after sending commands //
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void DoAcquisition125k(void)
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void DoAcquisition125k_internal(bool silent)
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{
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uint8_t *dest = (uint8_t *)BigBuf;
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int n = sizeof(BigBuf);
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@ -60,8 +36,44 @@ void DoAcquisition125k(void)
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if (i >= n) break;
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}
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}
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Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",
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dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);
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if( ! silent)
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{
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Dbprintf("buffer samples: %02x %02x %02x %02x %02x %02x %02x %02x ...",
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dest[0], dest[1], dest[2], dest[3], dest[4], dest[5], dest[6], dest[7]);
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}
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}
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void DoAcquisition125k(void)
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{
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DoAcquisition125k_internal(false);
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}
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void SetupToAcquireRawAdcSamples(int divisor)
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{
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if ( (divisor == 1) || (divisor < 0) || (divisor > 255) )
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz
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else if (divisor == 0)
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
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else
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, divisor);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
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// Connect the A/D to the peak-detected low-frequency path.
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SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
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// Give it a bit of time for the resonant antenna to settle.
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SpinDelay(50);
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// Now set up the SSC to get the ADC samples that are now streaming at us.
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FpgaSetupSsc();
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}
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void AcquireRawAdcSamples125k(int divisor)
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{
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SetupToAcquireRawAdcSamples(divisor);
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// Now call the acquisition routine
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DoAcquisition125k_internal(false);
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}
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void ModThenAcquireRawAdcSamples125k(int delay_off, int period_0, int period_1, uint8_t *command)
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@ -593,15 +605,8 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol)
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if (ledcontrol)
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LED_A_OFF();
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}
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// loop to capture raw HID waveform then FSK demodulate the TAG ID from it
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void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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void setup_for_125khz()
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{
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uint8_t *dest = (uint8_t *)BigBuf;
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int m=0, n=0, i=0, idx=0, found=0, lastval=0;
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uint32_t hi2=0, hi=0, lo=0;
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FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
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FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
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@ -614,6 +619,115 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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// Now set up the SSC to get the ADC samples that are now streaming at us.
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FpgaSetupSsc();
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}
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void get_samples(int ledcontrol, uint8_t* dest, int size)
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{
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int i = 0;
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memset(dest,128,size);
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for(;;) {
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if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
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AT91C_BASE_SSC->SSC_THR = 0x43;
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if (ledcontrol) LED_D_ON();
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}
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if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
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dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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// we don't care about actual value, only if it's more or less than a
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// threshold essentially we capture zero crossings for later analysis
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if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
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i++;
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if (ledcontrol) LED_D_OFF();
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if(i >= size) {
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break;
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}
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}
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}
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}
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uint8_t fsk_demod(uint8_t * dest, int size)
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{
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uint8_t last_transition = 0;
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uint8_t idx = 1;
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// we don't care about actual value, only if it's more or less than a
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// threshold essentially we capture zero crossings for later analysis
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uint8_t threshold_value = 127;
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WDT_HIT();
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// sync to first lo-hi transition, and threshold
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//Need to threshold first sample
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if(dest[0] < threshold_value) dest[0] = 0;
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else dest[0] = 1;
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uint8_t numBits = 0;
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// count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
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// or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
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// between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
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for(idx = 1; idx < size; idx++) {
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// threshold current value
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if (dest[idx] < threshold_value) dest[idx] = 0;
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else dest[idx] = 1;
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// Check for 0->1 transition
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if (dest[idx-1] < dest[idx]) { // 0 -> 1 transition
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if (idx-last_transition < 9) {
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dest[numBits]=1;
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} else {
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dest[numBits]=0;
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}
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last_transition = idx;
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numBits++;
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}
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}
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return numBits; //Actually, it returns the number of bytes, but each byte represents a bit: 1 or 0
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}
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uint8_t aggregate_bits(uint8_t *dest,uint8_t size, uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, uint8_t maxConsequtiveBits )
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{
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uint8_t lastval=dest[0];
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uint8_t idx=0;
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uint8_t numBits=0;
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uint8_t n=1, i=0;
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for( idx=1; idx < size; idx++) {
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if (dest[idx]==lastval) {
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n++;
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continue;
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}
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//if lastval was 1, we have a 1->0 crossing
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if ( lastval ) {
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n=(n+1)/7;
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} else {// 0->1 crossing
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n=(n+1)/6;
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}
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if(n < 13)
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{
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memset(dest+i, lastval ^ 1, n);
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numBits += n;
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}
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n=0;
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lastval=dest[idx];
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}//end for
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return numBits;
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}
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// loop to capture raw HID waveform then FSK demodulate the TAG ID from it
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void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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{
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uint8_t *dest = (uint8_t *)BigBuf;
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int size=0, idx=0, found=0;
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uint32_t hi2=0, hi=0, lo=0;
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// Configure to go in 125Khz listen mode
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SetupToAcquireRawAdcSamples(0);
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for(;;) {
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WDT_HIT();
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if (ledcontrol)
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@ -625,170 +739,64 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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return;
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}
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i = 0;
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m = sizeof(BigBuf);
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memset(dest,128,m);
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for(;;) {
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if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
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AT91C_BASE_SSC->SSC_THR = 0x43;
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if (ledcontrol)
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LED_D_ON();
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}
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if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
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dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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// we don't care about actual value, only if it's more or less than a
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// threshold essentially we capture zero crossings for later analysis
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if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
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i++;
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if (ledcontrol)
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LED_D_OFF();
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if(i >= m) {
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break;
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}
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}
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}
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DoAcquisition125k_internal(true);
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size = sizeof(BigBuf);
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// FSK demodulator
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size = fsk_demod(dest, size);
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// sync to first lo-hi transition
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for( idx=1; idx<m; idx++) {
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if (dest[idx-1]<dest[idx])
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lastval=idx;
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break;
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}
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WDT_HIT();
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// count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
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// or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
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// between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
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for( i=0; idx<m; idx++) {
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if (dest[idx-1]<dest[idx]) {
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dest[i]=idx-lastval;
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if (dest[i] <= 8) {
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dest[i]=1;
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} else {
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dest[i]=0;
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}
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lastval=idx;
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i++;
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}
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}
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m=i;
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WDT_HIT();
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// we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
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lastval=dest[0];
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idx=0;
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i=0;
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n=0;
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for( idx=0; idx<m; idx++) {
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if (dest[idx]==lastval) {
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n++;
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} else {
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// a bit time is five fc/10 or six fc/8 cycles so figure out how many bits a pattern width represents,
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// an extra fc/8 pattern preceeds every 4 bits (about 200 cycles) just to complicate things but it gets
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// swallowed up by rounding
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// expected results are 1 or 2 bits, any more and it's an invalid manchester encoding
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// special start of frame markers use invalid manchester states (no transitions) by using sequences
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// like 111000
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if (dest[idx-1]) {
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n=(n+1)/6; // fc/8 in sets of 6
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} else {
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n=(n+1)/5; // fc/10 in sets of 5
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}
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switch (n) { // stuff appropriate bits in buffer
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case 0:
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case 1: // one bit
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dest[i++]=dest[idx-1];
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break;
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case 2: // two bits
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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break;
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case 3: // 3 bit start of frame markers
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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break;
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// When a logic 0 is immediately followed by the start of the next transmisson
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// (special pattern) a pattern of 4 bit duration lengths is created.
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case 4:
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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dest[i++]=dest[idx-1];
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break;
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default: // this shouldn't happen, don't stuff any bits
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break;
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}
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n=0;
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lastval=dest[idx];
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}
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}
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m=i;
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// 1->0 : fc/8 in sets of 6
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// 0->1 : fc/10 in sets of 5
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size = aggregate_bits(dest,size, 6,5,5);
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WDT_HIT();
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// final loop, go over previously decoded manchester data and decode into usable tag ID
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// 111000 bit pattern represent start of frame, 01 pattern represents a 1 and 10 represents a 0
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for( idx=0; idx<m-6; idx++) {
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// search for a start of frame marker
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if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
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{
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found=1;
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idx+=6;
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if (found && (hi2|hi|lo)) {
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if (hi2 != 0){
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Dbprintf("TAG ID: %x%08x%08x (%d)",
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(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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else {
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Dbprintf("TAG ID: %x%08x (%d)",
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(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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/* if we're only looking for one tag */
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if (findone)
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{
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*high = hi;
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*low = lo;
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return;
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}
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hi2=0;
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hi=0;
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lo=0;
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found=0;
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}
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}
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uint8_t frame_marker_mask[] = {1,1,1,0,0,0};
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for( idx=0; idx < size-sizeof(frame_marker_mask); idx++) {
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if (found) {
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if (dest[idx] && (!dest[idx+1]) ) {
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hi2=(hi2<<1)|(hi>>31);
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hi=(hi<<1)|(lo>>31);
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lo=(lo<<1)|0;
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} else if ( (!dest[idx]) && dest[idx+1]) {
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hi2=(hi2<<1)|(hi>>31);
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hi=(hi<<1)|(lo>>31);
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lo=(lo<<1)|1;
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} else {
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if(dest[idx] == dest[idx+1])
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{// 1 1 or 00
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found=0;
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hi2=0;
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hi2=0;
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hi=0;
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lo=0;
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}else
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{
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//Shift in a bit. Start by shifting high registers
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hi2 = (hi2<<1)|(hi>>31);
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hi = (hi<<1)|(lo>>31);
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//Then, shift in a 0 or one into low
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if (dest[idx] && !dest[idx+1]) // 1 0
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lo=(lo<<1)|0;
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else // 0 1
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lo=(lo<<1)|1;
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}
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idx++;
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}
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if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) )
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{
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// search for a start of frame marker
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if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0)
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{ // Found start of frame marker
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found=1;
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idx+=6;
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if (found && (hi|lo)) {
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if (hi2 != 0){
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Dbprintf("TAG ID: %x%08x%08x (%d)",
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(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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else {
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Dbprintf("TAG ID: %x%08x (%d)",
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(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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idx+=sizeof(frame_marker_mask);
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if (found && (hi2|hi|lo)) {
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if (hi2 != 0){
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Dbprintf("TAG ID: %x%08x%08x (%d)",
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(unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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else {
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Dbprintf("TAG ID: %x%08x (%d)",
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(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
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}
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/* if we're only looking for one tag */
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if (findone)
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{
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@ -796,7 +804,7 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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*low = lo;
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return;
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}
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hi2=0;
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hi2=0;
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hi=0;
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lo=0;
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found=0;
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@ -807,25 +815,26 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol)
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}
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}
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uint32_t bytebits_to_byte(uint8_t* src, int numbits)
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{
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uint32_t num = 0;
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for(int i = 0 ; i < numbits ; i++)
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{
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num = (num << 1) | (*src);
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src++;
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}
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return num;
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}
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void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
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{
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||||
uint8_t *dest = (uint8_t *)BigBuf;
|
||||
int m=0, n=0, i=0, idx=0, lastval=0;
|
||||
int found=0;
|
||||
int size=0, idx=0;
|
||||
uint32_t code=0, code2=0;
|
||||
//uint32_t hi2=0, hi=0, lo=0;
|
||||
|
||||
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER);
|
||||
|
||||
// Connect the A/D to the peak-detected low-frequency path.
|
||||
SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
|
||||
|
||||
// Give it a bit of time for the resonant antenna to settle.
|
||||
SpinDelay(50);
|
||||
|
||||
// Now set up the SSC to get the ADC samples that are now streaming at us.
|
||||
FpgaSetupSsc();
|
||||
setup_for_125khz();
|
||||
|
||||
for(;;) {
|
||||
WDT_HIT();
|
||||
|
|
@ -838,170 +847,24 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
|
|||
return;
|
||||
}
|
||||
|
||||
i = 0;
|
||||
m = sizeof(BigBuf);
|
||||
memset(dest,128,m);
|
||||
for(;;) {
|
||||
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
|
||||
AT91C_BASE_SSC->SSC_THR = 0x43;
|
||||
if (ledcontrol)
|
||||
LED_D_ON();
|
||||
}
|
||||
if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
|
||||
dest[i] = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
|
||||
// we don't care about actual value, only if it's more or less than a
|
||||
// threshold essentially we capture zero crossings for later analysis
|
||||
if(dest[i] < 127) dest[i] = 0; else dest[i] = 1;
|
||||
i++;
|
||||
if (ledcontrol)
|
||||
LED_D_OFF();
|
||||
if(i >= m) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
DoAcquisition125k_internal(true);
|
||||
size = sizeof(BigBuf);
|
||||
|
||||
// FSK demodulator
|
||||
|
||||
// sync to first lo-hi transition
|
||||
for( idx=1; idx<m; idx++) {
|
||||
if (dest[idx-1]<dest[idx])
|
||||
lastval=idx;
|
||||
break;
|
||||
}
|
||||
size = fsk_demod(dest, size);
|
||||
WDT_HIT();
|
||||
|
||||
// count cycles between consecutive lo-hi transitions, there should be either 8 (fc/8)
|
||||
// or 10 (fc/10) cycles but in practice due to noise etc we may end up with with anywhere
|
||||
// between 7 to 11 cycles so fuzz it by treat anything <9 as 8 and anything else as 10
|
||||
for( i=0; idx<m; idx++) {
|
||||
if (dest[idx-1]<dest[idx]) {
|
||||
dest[i]=idx-lastval;
|
||||
if (dest[i] <= 8) {
|
||||
dest[i]=1;
|
||||
} else {
|
||||
dest[i]=0;
|
||||
}
|
||||
|
||||
lastval=idx;
|
||||
i++;
|
||||
}
|
||||
}
|
||||
m=i;
|
||||
WDT_HIT();
|
||||
|
||||
// we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns
|
||||
lastval=dest[0];
|
||||
idx=0;
|
||||
i=0;
|
||||
n=0;
|
||||
for( idx=0; idx<m; idx++) {
|
||||
if (dest[idx]==lastval) {
|
||||
n++;
|
||||
} else {
|
||||
// a bit time is five fc/10 or six fc/8 cycles so figure out how many bits a pattern width represents,
|
||||
// an extra fc/8 pattern preceeds every 4 bits (about 200 cycles) just to complicate things but it gets
|
||||
// swallowed up by rounding
|
||||
// expected results are 1 or 2 bits, any more and it's an invalid manchester encoding
|
||||
// special start of frame markers use invalid manchester states (no transitions) by using sequences
|
||||
// like 111000
|
||||
if (dest[idx-1]) {
|
||||
n=(n+1)/7; // fc/8 in sets of 7
|
||||
} else {
|
||||
n=(n+1)/6; // fc/10 in sets of 6
|
||||
}
|
||||
switch (n) { // stuff appropriate bits in buffer
|
||||
case 0:
|
||||
case 1: // one bit
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
//Dbprintf("%d",dest[idx-1]);
|
||||
break;
|
||||
case 2: // two bits
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
//Dbprintf("%d",dest[idx-1]);
|
||||
//Dbprintf("%d",dest[idx-1]);
|
||||
break;
|
||||
case 3: // 3 bit start of frame markers
|
||||
for(int j=0; j<3; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 4:
|
||||
for(int j=0; j<4; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 5:
|
||||
for(int j=0; j<5; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 6:
|
||||
for(int j=0; j<6; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 7:
|
||||
for(int j=0; j<7; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 8:
|
||||
for(int j=0; j<8; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 9:
|
||||
for(int j=0; j<9; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 10:
|
||||
for(int j=0; j<10; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 11:
|
||||
for(int j=0; j<11; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
case 12:
|
||||
for(int j=0; j<12; j++){
|
||||
dest[i++]=dest[idx-1]^1;
|
||||
// Dbprintf("%d",dest[idx-1]);
|
||||
}
|
||||
break;
|
||||
default: // this shouldn't happen, don't stuff any bits
|
||||
//Dbprintf("%d",dest[idx-1]);
|
||||
break;
|
||||
}
|
||||
n=0;
|
||||
lastval=dest[idx];
|
||||
}
|
||||
}//end for
|
||||
/*for(int j=0; j<64;j+=8){
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[j],dest[j+1],dest[j+2],dest[j+3],dest[j+4],dest[j+5],dest[j+6],dest[j+7]);
|
||||
}
|
||||
Dbprintf("\n");*/
|
||||
m=i;
|
||||
// 1->0 : fc/8 in sets of 7
|
||||
// 0->1 : fc/10 in sets of 6
|
||||
size = aggregate_bits(dest, size, 7,6,13);
|
||||
|
||||
WDT_HIT();
|
||||
|
||||
for( idx=0; idx<m-9; idx++) {
|
||||
if ( !(dest[idx]) && !(dest[idx+1]) && !(dest[idx+2]) && !(dest[idx+3]) && !(dest[idx+4]) && !(dest[idx+5]) && !(dest[idx+6]) && !(dest[idx+7]) && !(dest[idx+8])&& (dest[idx+9])){
|
||||
found=1;
|
||||
//idx+=9;
|
||||
if (found) {
|
||||
uint8_t mask[] = {0,0,0,0,0,0,0,0,0,1};
|
||||
for( idx=0; idx < size - 64; idx++) {
|
||||
|
||||
if ( memcmp(dest + idx, mask, sizeof(mask)) ) continue;
|
||||
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7]);
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+8], dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15]);
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+16],dest[idx+17],dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23]);
|
||||
|
|
@ -1010,57 +873,23 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol)
|
|||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44],dest[idx+45],dest[idx+46],dest[idx+47]);
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53],dest[idx+54],dest[idx+55]);
|
||||
Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]);
|
||||
|
||||
short version='\x00';
|
||||
char unknown='\x00';
|
||||
uint16_t number=0;
|
||||
for(int j=14;j<18;j++){
|
||||
//Dbprintf("%d",dest[idx+j]);
|
||||
version <<=1;
|
||||
if (dest[idx+j]) version |= 1;
|
||||
}
|
||||
for(int j=19;j<27;j++){
|
||||
//Dbprintf("%d",dest[idx+j]);
|
||||
unknown <<=1;
|
||||
if (dest[idx+j]) unknown |= 1;
|
||||
}
|
||||
for(int j=36;j<45;j++){
|
||||
//Dbprintf("%d",dest[idx+j]);
|
||||
number <<=1;
|
||||
if (dest[idx+j]) number |= 1;
|
||||
}
|
||||
for(int j=46;j<53;j++){
|
||||
//Dbprintf("%d",dest[idx+j]);
|
||||
number <<=1;
|
||||
if (dest[idx+j]) number |= 1;
|
||||
}
|
||||
for(int j=0; j<32; j++){
|
||||
code <<=1;
|
||||
if(dest[idx+j]) code |= 1;
|
||||
}
|
||||
for(int j=32; j<64; j++){
|
||||
code2 <<=1;
|
||||
if(dest[idx+j]) code2 |= 1;
|
||||
}
|
||||
|
||||
code = bytebits_to_byte(dest+idx,32);
|
||||
code2 = bytebits_to_byte(dest+idx+32,32);
|
||||
|
||||
short version = bytebits_to_byte(dest+idx+14,4);
|
||||
char unknown = bytebits_to_byte(dest+idx+19,8) ;
|
||||
uint16_t number = bytebits_to_byte(dest+idx+36,9);
|
||||
|
||||
Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,unknown,number,code,code2);
|
||||
if (ledcontrol)
|
||||
LED_D_OFF();
|
||||
}
|
||||
// if we're only looking for one tag
|
||||
if (findone){
|
||||
//*high = hi;
|
||||
//*low = lo;
|
||||
LED_A_OFF();
|
||||
return;
|
||||
}
|
||||
|
||||
//hi=0;
|
||||
//lo=0;
|
||||
found=0;
|
||||
}
|
||||
if (ledcontrol) LED_D_OFF();
|
||||
|
||||
}
|
||||
// if we're only looking for one tag
|
||||
if (findone){
|
||||
LED_A_OFF();
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
WDT_HIT();
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue