test/frequencies.c

   1 #include <devices/timer.h>
   2 #include <exec/execbase.h>
   3 #include <proto/exec.h>
   4 #include <proto/timer.h>
   5
   6 #include <stdio.h>
   7
   8 int __nocommandline = 1;
   9
  10 int main(void)
  11 {
  12     struct MsgPort *mp;
  13     struct timerequest *req;
  14
  15     printf("exec.library v%u.%u\n", SysBase->LibNode.lib_Version, SysBase->LibNode.lib_Revision);
  16     printf("VBlank frequency: %u\n", SysBase->VBlankFrequency);
  17     printf("PSU    frequency: %u\n", SysBase->PowerSupplyFrequency);
  18     printf("EClock frequency: %u\n\n", SysBase->ex_EClockFrequency);
  19
  20     mp = CreateMsgPort();
  21     if (mp) {
  22         req = (struct timerequest *)CreateIORequest(mp, sizeof(struct timerequest));
  23         if (req) {
  24             if (!OpenDevice("timer.device", UNIT_VBLANK, &req->tr_node, 0))
  25             {
  26                 struct Device *TimerBase = req->tr_node.io_Device;
  27                 struct EClockVal clock;
  28
  29                 printf("timer.device v%u.%u\n", TimerBase->dd_Library.lib_Version, TimerBase->dd_Library.lib_Revision);
  30                 printf("EClock frequency reported: %u\n", ReadEClock(&clock));
  31
  32                 CloseDevice(&req->tr_node);
  33             }
  34             else
  35                 printf("Failed to open timer.device!\n");
  36
  37                 DeleteIORequest(req);
  38         } else
  39             printf("Failed to create IORequest!\n");
  40
  41             DeleteMsgPort(mp);
  42     } else
  43         printf("Failed to create message port!\n");
  44
  45     return 0;
  46 }