+//-----------------------------------------------------------------------------
+// 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"
+
+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);
+}
projects / proxmark3-svn / blobdiff