]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/util.c
Clean up data types, some header cleanup, etc.
[proxmark3-svn] / armsrc / util.c
index b3f0e76e4df5b5127e68042e26f45899b4633231..ae6408cfe7032d638e94cbd67ec8af99ca781e1b 100644 (file)
-//-----------------------------------------------------------------------------\r
-// Utility functions used in many places, not specific to any piece of code.\r
-// Jonathan Westhues, Sept 2005\r
-//-----------------------------------------------------------------------------\r
-#include <proxmark3.h>\r
-#include "apps.h"\r
-\r
-void *memcpy(void *dest, const void *src, int len)\r
-{\r
-       BYTE *d = dest;\r
-       const BYTE *s = src;\r
-       while((len--) > 0) {\r
-               *d = *s;\r
-               d++;\r
-               s++;\r
-       }\r
-       return dest;\r
-}\r
-\r
-void *memset(void *dest, int c, int len)\r
-{\r
-       BYTE *d = dest;\r
-       while((len--) > 0) {\r
-               *d = c;\r
-               d++;\r
-       }\r
-       return dest;\r
-}\r
-\r
-int memcmp(const void *av, const void *bv, int len)\r
-{\r
-       const BYTE *a = av;\r
-       const BYTE *b = bv;\r
-\r
-       while((len--) > 0) {\r
-               if(*a != *b) {\r
-                       return *a - *b;\r
-               }\r
-               a++;\r
-               b++;\r
-       }\r
-       return 0;\r
-}\r
-\r
-int strlen(char *str)\r
-{\r
-       int l = 0;\r
-       while(*str) {\r
-               l++;\r
-               str++;\r
-       }\r
-       return l;\r
-}\r
+//-----------------------------------------------------------------------------
+// Utility functions used in many places, not specific to any piece of code.
+// Jonathan Westhues, Sept 2005
+//-----------------------------------------------------------------------------
+#include "proxmark3.h"
+#include "util.h"
+
+void *memcpy(void *dest, const void *src, int len)
+{
+       uint8_t *d = dest;
+       const uint8_t *s = src;
+       while((len--) > 0) {
+               *d = *s;
+               d++;
+               s++;
+       }
+       return dest;
+}
+
+void *memset(void *dest, int c, int len)
+{
+       uint8_t *d = dest;
+       while((len--) > 0) {
+               *d = c;
+               d++;
+       }
+       return dest;
+}
+
+int memcmp(const void *av, const void *bv, int len)
+{
+       const uint8_t *a = av;
+       const uint8_t *b = bv;
+
+       while((len--) > 0) {
+               if(*a != *b) {
+                       return *a - *b;
+               }
+               a++;
+               b++;
+       }
+       return 0;
+}
+
+int strlen(const 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 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);
+}
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