--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/me8100_test_int/test.c	Wed Jan 16 15:54:58 2002 +0100
@@ -0,0 +1,141 @@
+/*
+ * Source File : me8100_test_int.c                                            
+ * Destination : me8100_test_int.out                                              
+ * Author      : GG (Guenter Gebhardt)                                 
+ *    
+ *                                                                     
+ * File History: Version   Date       Editor   Action                  
+ *---------------------------------------------------------------------
+ *               1.00.00   01.07.12   GG       first release           
+ *                                                                     
+ *---------------------------------------------------------------------
+ *                                                                     
+ * Description:
+ *   This program shows the usage of the driver and the interrupt
+ *   facility of the me8100. First the board is configured, in order to
+ *   generate an interrupt when a bit pattern of 0x0001 on port a and a bit
+ *   pattern of 0x0100 an port b is pending. Then the board is configured, 
+ *   in order to generate an interrupt with a bit mask of 0x0001 on port a 
+ *   and a bit mask of 0x0100 on port b. 
+ *   We install a signal handler, which is informed by the interrupt routine 
+ *   by signalling of the driver, when a interrupt occures.
+ */
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+#include <stdlib.h>
+#include "me8100.h"
+
+
+/* Prototypes */
+static void signal_handler(int);
+
+/* Counts the interrupts */
+static me8100_int_occur_type intcounts;
+
+/* Count of signal handler execution */
+static int i = 0;
+
+/* Path to the ME8100 board */
+static int file_handle = -1;
+
+int main(void){
+  int err = 0;
+  int oflags = 0;
+
+  unsigned short mask_a;
+  unsigned short ctrl_a;
+
+  unsigned char icsr;
+
+  printf("IRQ Test %d\n", getpid());
+
+  file_handle = open("/dev/me8100_0", O_RDWR, 0);
+
+  if(file_handle < 0){
+    printf("Cannot open path !\n");
+    return 1;
+  }
+
+  /*---------------------- general setup ------------------------------------*/
+
+  /* install the signal handler */
+  signal(SIGIO, signal_handler);
+
+  /* set current process as owner of the path */
+  fcntl(file_handle, F_SETOWN, getpid());
+
+  /* read the flags of the path */
+  oflags = fcntl(file_handle, F_GETFL);
+
+  /* Inform the driver to put the current process on the fasync queue */
+  fcntl(file_handle, F_SETFL, oflags | FASYNC); 
+
+  /* enable both interrupts on the plx, set interrupts to high active */
+  icsr =
+    LOCAL_INT1_EN |
+    LOCAL_INT1_POL |
+    PCI_INT_EN;
+
+  err = ioctl(file_handle, ME8100_SETUP_ICSR, &icsr);
+  if(err){
+    printf("Cannot setup PLX\n");
+    return 1;
+  }
+
+  /*-------------------- Interrupt caused by bit mask -----------------*/
+
+  /* Set the proper bit mask for port a */
+  mask_a = 0xffff;
+  err = ioctl(file_handle, ME8100_WRITE_MASK_A, &mask_a);
+  if(err){
+    printf("Cannot write mask a\n");
+    return 1;
+  }
+
+  /* Enable interrupt signalling by bit mask for port a */
+  ctrl_a = ME8100_CTL_ENIO | ME8100_CTL_SOURCE | ME8100_CTL_IRQ_MASK;
+  err = ioctl(file_handle, ME8100_WRITE_CTRL_A, &ctrl_a);
+  if(err){
+    printf("Cannot write ctrl a\n");
+    return 1;
+  }
+
+  printf("<<<--- WAITING FOR INTERRUPTS BY BIT MASK --->>>\n\n");
+
+  i = 0;
+  while(i < 10) {
+    select(0, NULL, NULL, NULL, NULL);
+  }
+
+  printf("Close path to me8100_0\n");
+  err = close(file_handle);
+  if(err){
+    printf("Kann Pfad nicht schliessen\n");
+    return 1;
+  }
+
+  return 1;
+}
+
+
+
+void signal_handler(int sig){
+  int err = 0;
+  i++;
+  err = ioctl(file_handle, ME8100_GET_INT_COUNT, &intcounts);
+  if(err)
+    return;
+
+  fprintf(stderr, "<<<--- ME8100 SIGNAL HANDLER CALLED --->>>\n"
+	 "Execution   = %04d\n"
+	 "int_count_1 = %04d\n"
+	 "int_count_2 = %04d\n\n", i, intcounts.int1, intcounts.int2);
+  return;
+}
+
+/*
+	vim:sts=2 sw=2 aw ai sm:
+*/