core/iap/iap.c

   1 /**************************************************************************/
   2 /*!
   3     @file     iap.c
   4     Source:   http://knowledgebase.nxp.com/showthread.php?t=1594
   5 */
   6 /**************************************************************************/
   7 #include "iap.h"
   8
   9 IAP_return_t iap_return;
  10
  11 #define IAP_ADDRESS 0x1FFF1FF1
  12 uint32_t param_table[5];
  13
  14 /**************************************************************************/
  15 /*!
  16     Sends the IAP command and stores the result
  17 */
  18 /**************************************************************************/
  19 void iap_entry(uint32_t param_tab[], uint32_t result_tab[])
  20 {
  21   void (*iap)(uint32_t[], uint32_t[]);
  22   iap = (void (*)(uint32_t[], uint32_t[]))IAP_ADDRESS;
  23   iap(param_tab,result_tab);
  24 }
  25
  26 /**************************************************************************/
  27 /*!
  28     Returns the CPU's unique 128-bit serial number (4 words long)
  29
  30     @section Example
  31
  32     @code
  33     #include "core/iap/iap.h"
  34
  35     IAP_return_t iap_return;
  36     iap_return = iapReadSerialNumber();
  37
  38     if (iap_return.ReturnCode == 0)
  39     {
  40       printf("Serial Number: %08X %08X %08X %08X %s",
  41               iap_return.Result[0],
  42               iap_return.Result[1],
  43               iap_return.Result[2],
  44               iap_return.Result[3],
  45               CFG_PRINTF_NEWLINE);
  46     }
  47     @endcode
  48 */
  49 /**************************************************************************/
  50 IAP_return_t iapReadSerialNumber(void)
  51 {
  52   // ToDo: Why does IAP sometime cause the application to halt when read???
  53   param_table[0] = IAP_CMD_READUID;
  54   iap_entry(param_table,(uint32_t*)(&iap_return));
  55   return iap_return;
  56 }
  57