X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/355c8b4a7df083c13d82963fb9d14548647e91b1..aaa1a9a2dcb8b9f2b6acd937f84464daa50ecad6:/armsrc/util.c diff --git a/armsrc/util.c b/armsrc/util.c index a4f55879..4e74b88d 100644 --- a/armsrc/util.c +++ b/armsrc/util.c @@ -12,6 +12,7 @@ #include "util.h" #include "string.h" #include "apps.h" +#include "BigBuf.h" @@ -34,13 +35,12 @@ void print_result(char *name, uint8_t *buf, size_t len) { } size_t nbytes(size_t nbits) { - return (nbits/8)+((nbits%8)>0); + return (nbits >> 3)+((nbits % 8) > 0); } uint32_t SwapBits(uint32_t value, int nrbits) { - int i; uint32_t newvalue = 0; - for(i = 0; i < nrbits; i++) { + for(int i = 0; i < nrbits; i++) { newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i); } return newvalue; @@ -73,6 +73,7 @@ void rol(uint8_t *data, const size_t len){ } data[len-1] = first; } + void lsl (uint8_t *data, size_t len) { for (size_t n = 0; n < len - 1; n++) { data[n] = (data[n] << 1) | (data[n+1] >> 7); @@ -267,15 +268,15 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers dst[0] = 0; strncat(dst, prefix, len-1); if(v->magic != VERSION_INFORMATION_MAGIC) { - strncat(dst, "Missing/Invalid version information", len - strlen(dst) - 1); + strncat(dst, "Missing/Invalid version information\n", len - strlen(dst) - 1); return; } if(v->versionversion != 1) { - strncat(dst, "Version information not understood", len - strlen(dst) - 1); + strncat(dst, "Version information not understood\n", len - strlen(dst) - 1); return; } if(!v->present) { - strncat(dst, "Version information not available", len - strlen(dst) - 1); + strncat(dst, "Version information not available\n", len - strlen(dst) - 1); return; } @@ -288,6 +289,7 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers strncat(dst, " ", len - strlen(dst) - 1); strncat(dst, v->buildtime, len - strlen(dst) - 1); + strncat(dst, "\n", len - strlen(dst) - 1); } // ------------------------------------------------------------------------- @@ -302,11 +304,12 @@ void FormatVersionInformation(char *dst, int len, const char *prefix, void *vers void StartTickCount() { -// must be 0x40, but on my cpu - included divider is optimal -// 0x20 - 1 ms / bit -// 0x40 - 2 ms / bit - - AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST + 0x001D; // was 0x003B + // This timer is based on the slow clock. The slow clock frequency is between 22kHz and 40kHz. + // We can determine the actual slow clock frequency by looking at the Main Clock Frequency Register. + uint16_t mainf = AT91C_BASE_PMC->PMC_MCFR & 0xffff; // = 16 * main clock frequency (16MHz) / slow clock frequency + // set RealTimeCounter divider to count at 1kHz: + AT91C_BASE_RTTC->RTTC_RTMR = AT91C_RTTC_RTTRST | ((256000 + (mainf/2)) / mainf); + // note: worst case precision is approx 2.5% } /* @@ -328,8 +331,8 @@ void StartCountUS() // fast clock AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKDIS; // timer disable AT91C_BASE_TC0->TC_CMR = AT91C_TC_CLKS_TIMER_DIV3_CLOCK | // MCK(48MHz)/32 -- tick=1.5mks - AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR | - AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET; + AT91C_TC_WAVE | AT91C_TC_WAVESEL_UP_AUTO | AT91C_TC_ACPA_CLEAR | + AT91C_TC_ACPC_SET | AT91C_TC_ASWTRG_SET; AT91C_BASE_TC0->TC_RA = 1; AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000 @@ -342,7 +345,9 @@ void StartCountUS() } uint32_t RAMFUNC GetCountUS(){ - return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10); + //return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10); + // By suggestion from PwPiwi, http://www.proxmark.org/forum/viewtopic.php?pid=17548#p17548 + return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV * 2) / 3); } static uint32_t GlobalUsCounter = 0; @@ -416,92 +421,10 @@ void StartCountSspClk() while (AT91C_BASE_TC0->TC_CV < 0xFFF0); } - uint32_t RAMFUNC GetCountSspClk(){ - uint32_t tmp_count; - tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV; - if ((tmp_count & 0x0000ffff) == 0) { //small chance that we may have missed an increment in TC2 + uint32_t tmp_count = (AT91C_BASE_TC2->TC_CV << 16) | AT91C_BASE_TC0->TC_CV; + if ((tmp_count & 0x0000ffff) == 0) //small chance that we may have missed an increment in TC2 return (AT91C_BASE_TC2->TC_CV << 16); - } - else { - return tmp_count; - } -} -void iso14a_clear_trace() { - clear_trace(); -} - -void iso14a_set_tracing(bool enable) { - set_tracing(enable); -} - -void clear_trace() { - memset(trace, 0x44, TRACE_SIZE); - traceLen = 0; -} - -void set_tracing(bool enable) { - tracing = enable; -} - -/** - This is a function to store traces. All protocols can use this generic tracer-function. - The traces produced by calling this function can be fetched on the client-side - by 'hf list raw', alternatively 'hf list ' for protocol-specific - annotation of commands/responses. - -**/ -bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag) -{ - if (!tracing) return FALSE; - - uint16_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity - uint16_t duration = timestamp_end - timestamp_start; - - // Return when trace is full - if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= TRACE_SIZE) { - tracing = FALSE; // don't trace any more - return FALSE; - } - - // Traceformat: - // 32 bits timestamp (little endian) - // 16 bits duration (little endian) - // 16 bits data length (little endian, Highest Bit used as readerToTag flag) - // y Bytes data - // x Bytes parity (one byte per 8 bytes data) - - // timestamp (start) - trace[traceLen++] = ((timestamp_start >> 0) & 0xff); - trace[traceLen++] = ((timestamp_start >> 8) & 0xff); - trace[traceLen++] = ((timestamp_start >> 16) & 0xff); - trace[traceLen++] = ((timestamp_start >> 24) & 0xff); - - // duration - trace[traceLen++] = ((duration >> 0) & 0xff); - trace[traceLen++] = ((duration >> 8) & 0xff); - - // data length - trace[traceLen++] = ((iLen >> 0) & 0xff); - trace[traceLen++] = ((iLen >> 8) & 0xff); - - // readerToTag flag - if (!readerToTag) { - trace[traceLen - 1] |= 0x80; - } - - // data bytes - if (btBytes != NULL && iLen != 0) { - memcpy(trace + traceLen, btBytes, iLen); - } - traceLen += iLen; - - // parity bytes - if (parity != NULL && iLen != 0) { - memcpy(trace + traceLen, parity, num_paritybytes); - } - traceLen += num_paritybytes; - - return TRUE; + return tmp_count; }