X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/df51693f95b76e288002456a0869ac7d7cae4c6d..48ece4a750b41536ba2c56dfd9a088b192976c82:/armsrc/lfops.c?ds=sidebyside diff --git a/armsrc/lfops.c b/armsrc/lfops.c index 13cf2967..16c42855 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -16,6 +16,7 @@ #include "string.h" #include "lfdemod.h" #include "lfsampling.h" +#include "usb_cdc.h" /** @@ -401,7 +402,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) for(;;) { //wait until SSC_CLK goes HIGH while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) { - if(BUTTON_PRESS()) { + if(BUTTON_PRESS() || usb_poll()) { DbpString("Stopped"); return; } @@ -461,7 +462,7 @@ static void fc(int c, int *n) dest[((*n)++)]=0; } - // an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples + // an fc/8 encoded bit is a bit pattern of 11110000 x6 = 48 samples if(c==8) { for (idx=0; idx<6; idx++) { dest[((*n)++)]=1; @@ -475,7 +476,7 @@ static void fc(int c, int *n) } } - // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples + // an fc/10 encoded bit is a bit pattern of 1111100000 x5 = 50 samples if(c==10) { for (idx=0; idx<5; idx++) { dest[((*n)++)]=1; @@ -492,52 +493,33 @@ static void fc(int c, int *n) } } // compose fc/X fc/Y waveform (FSKx) -static void fcAll(uint8_t c, int *n, uint8_t clock, uint16_t *modCnt) +static void fcAll(uint8_t fc, int *n, uint8_t clock, uint16_t *modCnt) { uint8_t *dest = BigBuf_get_addr(); - uint8_t idx; - uint8_t fcCnt; - // c = count of field clock for this bit - uint8_t mod = clock % c; - uint8_t modAdj = c/mod; - bool modAdjOk=FALSE; - if (c % mod==0) modAdjOk=TRUE; + uint8_t halfFC = fc/2; + uint8_t wavesPerClock = clock/fc; + uint8_t mod = clock % fc; //modifier + uint8_t modAdj = fc/mod; //how often to apply modifier + bool modAdjOk = !(fc % mod); //if (fc % mod==0) modAdjOk=TRUE; // loop through clock - step field clock - for (idx=0; idx < (uint8_t) clock/c; idx++){ - // loop through field clock length - put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave) - for (fcCnt=0; fcCnt < c; fcCnt++){ //fudge slow transition from low to high - shorten wave by 1 - if (fcCnt < c/2){ - dest[((*n)++)]=0; - } else { - //fudge low to high transition - //if (idx==clock/c && dest[*n-1]==1 && mod>0) dest[((*n++))]=0; - //if (c==8 && fcCnt==5) continue; - dest[((*n)++)]=1; - } - } + for (uint8_t idx=0; idx < wavesPerClock; idx++){ + // put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave) + memset(dest+(*n), 0, fc-halfFC); //in case of odd number use extra here + memset(dest+(*n)+(fc-halfFC), 1, halfFC); + *n += fc; } if (mod>0) (*modCnt)++; if ((mod>0) && modAdjOk){ //fsk2 if ((*modCnt % modAdj) == 0){ //if 4th 8 length wave in a rf/50 add extra 8 length wave - for (fcCnt=0; fcCnt < c; fcCnt++){ //fudge slow transition from low to high - shorten wave by 1 - if (fcCnt < c/2){ - dest[((*n)++)]=0; - } else { - //if (c==8 && fcCnt==5) continue; - dest[((*n)++)]=1; - } - } + memset(dest+(*n), 0, fc-halfFC); + memset(dest+(*n)+(fc-halfFC), 1, halfFC); + *n += fc; } } - //Dbprintf("mod: %d, modAdj %d, modc %d",mod, modAdj, c % mod); if (mod>0 && !modAdjOk){ //fsk1 - for (idx=0; idx < mod; idx++){ - if (idx < mod/2) { - dest[((*n)++)]=0; - } else { - dest[((*n)++)]=1; - } - } + memset(dest+(*n), 0, mod-(mod/2)); + memset(dest+(*n)+(mod-(mod/2)), 1, mod/2); + *n += mod; } } @@ -607,12 +589,9 @@ void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream) uint8_t fcHigh = arg1 >> 8; uint8_t fcLow = arg1 & 0xFF; uint16_t modCnt = 0; - //spacer bit uint8_t clk = arg2 & 0xFF; uint8_t invert = (arg2 >> 8) & 1; - //fcAll(0, &n, clk); - - WDT_HIT(); + for (i=0; i> 8; uint8_t carrier = arg1 & 0xFF; uint8_t invert = arg2 & 0xFF; - //uint8_t phase = carrier/2; //extra phase changing bits = 1/2 a carrier wave to change the phase - //uint8_t invert = (arg2 >> 8) & 1; - WDT_HIT(); uint8_t curPhase = 0; for (i=0; i