sdcc/support/regression/tests/interrupt.c.in

   1 /** Interrupt tests.
   2     regbank: 0,1
   3  */
   4 #include <testfwk.h>
   5
   6 #if defined(__SDCC_mcs51)
   7
   8 #include <8052.h>
   9
  10 volatile long lA = 12345;
  11 volatile long lB = 67890;
  12 volatile long lC = 0;
  13
  14 #endif
  15
  16 void
  17 testInterrupt (void)
  18 {
  19 #if defined(__SDCC_mcs51)
  20   register long x = lC;
  21
  22   //enable the interrupt and set it
  23   ET2 = 1;
  24   EA = 1;
  25   TF2 = 1;
  26
  27   while (TF2)
  28     ; //wait until serviced
  29   ASSERT (lC + x == 74474);
  30 #else
  31   ASSERT (1);
  32 #endif
  33 }
  34
  35 #if defined(__SDCC_mcs51)
  36 // Timer2 interrupt service routine
  37 // with register and (stack)spil usage
  38 void
  39 T2_isr (void) __interrupt (5) __using({regbank})
  40 {
  41     long a, b, c;
  42     a = lA + 0xBABE;
  43     b = lB + 0xBEEB;
  44     c = a ^ b;
  45     lC = c;
  46     TF2 = 0;
  47 }
  48 #endif