X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ba8a80b30c4da36ef10854b53b06d9ff9acaca44..d16d20b1fbb74d5b273005a48d39da24f8d54858:/armsrc/util.c diff --git a/armsrc/util.c b/armsrc/util.c index a102bbb5..3870a6c6 100644 --- a/armsrc/util.c +++ b/armsrc/util.c @@ -1,237 +1,312 @@ -//----------------------------------------------------------------------------- -// Utility functions used in many places, not specific to any piece of code. -// Jonathan Westhues, Sept 2005 -//----------------------------------------------------------------------------- -#include -#include "apps.h" - -void *memcpy(void *dest, const void *src, int len) -{ - BYTE *d = dest; - const BYTE *s = src; - while((len--) > 0) { - *d = *s; - d++; - s++; - } - return dest; -} - -void *memset(void *dest, int c, int len) -{ - BYTE *d = dest; - while((len--) > 0) { - *d = c; - d++; - } - return dest; -} - -int memcmp(const void *av, const void *bv, int len) -{ - const BYTE *a = av; - const BYTE *b = bv; - - while((len--) > 0) { - if(*a != *b) { - return *a - *b; - } - a++; - b++; - } - return 0; -} - -int strlen(char *str) -{ - int l = 0; - while(*str) { - l++; - str++; - } - return l; -} - -char* strncat(char *dest, const char *src, unsigned int n) -{ - unsigned int dest_len = strlen(dest); - unsigned int i; - - for (i = 0 ; i < n && src[i] != '\0' ; i++) - dest[dest_len + i] = src[i]; - dest[dest_len + i] = '\0'; - - return dest; -} - - -void LEDsoff() -{ - LED_A_OFF(); - LED_B_OFF(); - LED_C_OFF(); - LED_D_OFF(); -} - -// LEDs: R(C) O(A) G(B) -- R(D) [1, 2, 4 and 8] -void LED(int led, int ms) -{ - if (led & LED_RED) - LED_C_ON(); - if (led & LED_ORANGE) - LED_A_ON(); - if (led & LED_GREEN) - LED_B_ON(); - if (led & LED_RED2) - LED_D_ON(); - - if (!ms) - return; - - SpinDelay(ms); - - if (led & LED_RED) - LED_C_OFF(); - if (led & LED_ORANGE) - LED_A_OFF(); - if (led & LED_GREEN) - LED_B_OFF(); - if (led & LED_RED2) - LED_D_OFF(); -} - - -// Determine if a button is double clicked, single clicked, -// not clicked, or held down (for ms || 1sec) -// In general, don't use this function unless you expect a -// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead -int BUTTON_CLICKED(int ms) -{ - // Up to 500ms in between clicks to mean a double click - int ticks = (48000 * (ms ? ms : 1000)) >> 10; - - // If we're not even pressed, forget about it! - if (!BUTTON_PRESS()) - return BUTTON_NO_CLICK; - - // Borrow a PWM unit for my real-time clock - PWM_ENABLE = PWM_CHANNEL(0); - // 48 MHz / 1024 gives 46.875 kHz - PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10); - PWM_CH_DUTY_CYCLE(0) = 0; - PWM_CH_PERIOD(0) = 0xffff; - - WORD start = (WORD)PWM_CH_COUNTER(0); - - int letoff = 0; - for(;;) - { - WORD now = (WORD)PWM_CH_COUNTER(0); - - // We haven't let off the button yet - if (!letoff) - { - // We just let it off! - if (!BUTTON_PRESS()) - { - letoff = 1; - - // reset our timer for 500ms - start = (WORD)PWM_CH_COUNTER(0); - ticks = (48000 * (500)) >> 10; - } - - // Still haven't let it off - else - // Have we held down a full second? - if (now == (WORD)(start + ticks)) - return BUTTON_HOLD; - } - - // We already let off, did we click again? - else - // Sweet, double click! - if (BUTTON_PRESS()) - return BUTTON_DOUBLE_CLICK; - - // Have we ran out of time to double click? - else - if (now == (WORD)(start + ticks)) - // At least we did a single click - return BUTTON_SINGLE_CLICK; - - WDT_HIT(); - } - - // We should never get here - return BUTTON_ERROR; -} - -// Determine if a button is held down -int BUTTON_HELD(int ms) -{ - // If button is held for one second - int ticks = (48000 * (ms ? ms : 1000)) >> 10; - - // If we're not even pressed, forget about it! - if (!BUTTON_PRESS()) - return BUTTON_NO_CLICK; - - // Borrow a PWM unit for my real-time clock - PWM_ENABLE = PWM_CHANNEL(0); - // 48 MHz / 1024 gives 46.875 kHz - PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10); - PWM_CH_DUTY_CYCLE(0) = 0; - PWM_CH_PERIOD(0) = 0xffff; - - WORD start = (WORD)PWM_CH_COUNTER(0); - - for(;;) - { - WORD now = (WORD)PWM_CH_COUNTER(0); - - // As soon as our button let go, we didn't hold long enough - if (!BUTTON_PRESS()) - return BUTTON_SINGLE_CLICK; - - // Have we waited the full second? - else - if (now == (WORD)(start + ticks)) - return BUTTON_HOLD; - - WDT_HIT(); - } - - // We should never get here - return BUTTON_ERROR; -} - -// attempt at high resolution microsecond timer -// beware: timer counts in 21.3uS increments (1024/48Mhz) -void SpinDelayUs(int us) -{ - int ticks = (48*us) >> 10; - - // Borrow a PWM unit for my real-time clock - PWM_ENABLE = PWM_CHANNEL(0); - // 48 MHz / 1024 gives 46.875 kHz - PWM_CH_MODE(0) = PWM_CH_MODE_PRESCALER(10); - PWM_CH_DUTY_CYCLE(0) = 0; - PWM_CH_PERIOD(0) = 0xffff; - - WORD start = (WORD)PWM_CH_COUNTER(0); - - for(;;) { - WORD now = (WORD)PWM_CH_COUNTER(0); - if (now == (WORD)(start + ticks)) - return; - - WDT_HIT(); - } -} - -void SpinDelay(int ms) -{ - // convert to uS and call microsecond delay function - SpinDelayUs(ms*1000); -} +//----------------------------------------------------------------------------- +// Jonathan Westhues, Sept 2005 +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Utility functions used in many places, not specific to any piece of code. +//----------------------------------------------------------------------------- + +#include "proxmark3.h" +#include "util.h" +#include "string.h" + +uint32_t SwapBits(uint32_t value, int nrbits) { + int i; + uint32_t newvalue = 0; + for(i = 0; i < nrbits; i++) { + newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i); + } + return newvalue; +} + +void num_to_bytes(uint64_t n, size_t len, uint8_t* dest) +{ + while (len--) { + dest[len] = (uint8_t) n; + n >>= 8; + } +} + +uint64_t bytes_to_num(uint8_t* src, size_t len) +{ + uint64_t num = 0; + while (len--) + { + num = (num << 8) | (*src); + src++; + } + return num; +} + +void LEDsoff() +{ + LED_A_OFF(); + LED_B_OFF(); + LED_C_OFF(); + LED_D_OFF(); +} + +// LEDs: R(C) O(A) G(B) -- R(D) [1, 2, 4 and 8] +void LED(int led, int ms) +{ + if (led & LED_RED) + LED_C_ON(); + if (led & LED_ORANGE) + LED_A_ON(); + if (led & LED_GREEN) + LED_B_ON(); + if (led & LED_RED2) + LED_D_ON(); + + if (!ms) + return; + + SpinDelay(ms); + + if (led & LED_RED) + LED_C_OFF(); + if (led & LED_ORANGE) + LED_A_OFF(); + if (led & LED_GREEN) + LED_B_OFF(); + if (led & LED_RED2) + LED_D_OFF(); +} + + +// Determine if a button is double clicked, single clicked, +// not clicked, or held down (for ms || 1sec) +// In general, don't use this function unless you expect a +// double click, otherwise it will waste 500ms -- use BUTTON_HELD instead +int BUTTON_CLICKED(int ms) +{ + // Up to 500ms in between clicks to mean a double click + int ticks = (48000 * (ms ? ms : 1000)) >> 10; + + // If we're not even pressed, forget about it! + if (!BUTTON_PRESS()) + return BUTTON_NO_CLICK; + + // Borrow a PWM unit for my real-time clock + AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0); + // 48 MHz / 1024 gives 46.875 kHz + AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10); + AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0; + AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff; + + uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + + int letoff = 0; + for(;;) + { + uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + + // We haven't let off the button yet + if (!letoff) + { + // We just let it off! + if (!BUTTON_PRESS()) + { + letoff = 1; + + // reset our timer for 500ms + start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + ticks = (48000 * (500)) >> 10; + } + + // Still haven't let it off + else + // Have we held down a full second? + if (now == (uint16_t)(start + ticks)) + return BUTTON_HOLD; + } + + // We already let off, did we click again? + else + // Sweet, double click! + if (BUTTON_PRESS()) + return BUTTON_DOUBLE_CLICK; + + // Have we ran out of time to double click? + else + if (now == (uint16_t)(start + ticks)) + // At least we did a single click + return BUTTON_SINGLE_CLICK; + + WDT_HIT(); + } + + // We should never get here + return BUTTON_ERROR; +} + +// Determine if a button is held down +int BUTTON_HELD(int ms) +{ + // If button is held for one second + int ticks = (48000 * (ms ? ms : 1000)) >> 10; + + // If we're not even pressed, forget about it! + if (!BUTTON_PRESS()) + return BUTTON_NO_CLICK; + + // Borrow a PWM unit for my real-time clock + AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0); + // 48 MHz / 1024 gives 46.875 kHz + AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10); + AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0; + AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff; + + uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + + for(;;) + { + uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + + // As soon as our button let go, we didn't hold long enough + if (!BUTTON_PRESS()) + return BUTTON_SINGLE_CLICK; + + // Have we waited the full second? + else + if (now == (uint16_t)(start + ticks)) + return BUTTON_HOLD; + + WDT_HIT(); + } + + // We should never get here + return BUTTON_ERROR; +} + +// attempt at high resolution microsecond timer +// beware: timer counts in 21.3uS increments (1024/48Mhz) +void SpinDelayUs(int us) +{ + int ticks = (48*us) >> 10; + + // Borrow a PWM unit for my real-time clock + AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0); + // 48 MHz / 1024 gives 46.875 kHz + AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10); + AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0; + AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff; + + uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + + for(;;) { + uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR; + if (now == (uint16_t)(start + ticks)) + return; + + WDT_HIT(); + } +} + +void SpinDelay(int ms) +{ + // convert to uS and call microsecond delay function + SpinDelayUs(ms*1000); +} + +/* Similar to FpgaGatherVersion this formats stored version information + * into a string representation. It takes a pointer to the struct version_information, + * verifies the magic properties, then stores a formatted string, prefixed by + * prefix in dst. + */ +void FormatVersionInformation(char *dst, int len, const char *prefix, void *version_information) +{ + struct version_information *v = (struct version_information*)version_information; + dst[0] = 0; + strncat(dst, prefix, len); + if(v->magic != VERSION_INFORMATION_MAGIC) { + strncat(dst, "Missing/Invalid version information", len); + return; + } + if(v->versionversion != 1) { + strncat(dst, "Version information not understood", len); + return; + } + if(!v->present) { + strncat(dst, "Version information not available", len); + return; + } + + strncat(dst, v->svnversion, len); + if(v->clean == 0) { + strncat(dst, "-unclean", len); + } else if(v->clean == 2) { + strncat(dst, "-suspect", len); + } + + strncat(dst, " ", len); + strncat(dst, v->buildtime, len); +} + +// ------------------------------------------------------------------------- +// timer lib +// ------------------------------------------------------------------------- +// test procedure: +// +// ti = GetTickCount(); +// SpinDelay(1000); +// ti = GetTickCount() - ti; +// Dbprintf("timer(1s): %d t=%d", ti, GetTickCount()); + +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 +} + +/* +* Get the current count. +*/ +uint32_t RAMFUNC GetTickCount(){ + return AT91C_BASE_RTTC->RTTC_RTVR;// was * 2; +} + +// ------------------------------------------------------------------------- +// microseconds timer +// ------------------------------------------------------------------------- +void StartCountUS() +{ + AT91C_BASE_PMC->PMC_PCER |= (0x1 << 12) | (0x1 << 13) | (0x1 << 14); +// AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC1XC1S_TIOA0; + AT91C_BASE_TCB->TCB_BMR = AT91C_TCB_TC0XC0S_NONE | AT91C_TCB_TC1XC1S_TIOA0 | AT91C_TCB_TC2XC2S_NONE; + + // 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_BASE_TC0->TC_RA = 1; + AT91C_BASE_TC0->TC_RC = 0xBFFF + 1; // 0xC000 + + AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKDIS; // timer disable + AT91C_BASE_TC1->TC_CMR = AT91C_TC_CLKS_XC1; // from timer 0 + + AT91C_BASE_TC0->TC_CCR = AT91C_TC_CLKEN; + AT91C_BASE_TC1->TC_CCR = AT91C_TC_CLKEN; + AT91C_BASE_TCB->TCB_BCR = 1; +} + +uint32_t RAMFUNC GetCountUS(){ + return (AT91C_BASE_TC1->TC_CV * 0x8000) + ((AT91C_BASE_TC0->TC_CV / 15) * 10); +} + +static uint32_t GlobalUsCounter = 0; + +uint32_t RAMFUNC GetDeltaCountUS(){ + uint32_t g_cnt = GetCountUS(); + uint32_t g_res = g_cnt - GlobalUsCounter; + GlobalUsCounter = g_cnt; + return g_res; +} + +