AlcapDAQ  1
parport_module.cpp
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1 //#define PARALLEL_PORT0 0x4450
2 //#define PARALLEL_PORT1 0x4451
3 //#define PARALLEL_PORT1 0x44c0
4 //#define PARALLEL_PORT1 0x4440 // always reads 4
5 //#define PARALLEL_PORT0 0x1250
6 //#define PARALLEL_PORT1 0x1251
7 #define PARALLEL_PORT0 0x1150
8 #define PARALLEL_PORT1 0x1151
9 
10 // #define PARALLEL_PORT0 0x378
11 // #define PARALLEL_PORT1 (0x378+1)
12 #include <stdio.h>
13 #include <stdlib.h>
14 
15 #include <unistd.h>
16 #include <sys/io.h>
17 #include <sys/time.h>
18 
19 #include "midas.h"
20 
21 #include "crate.h"
22 #include "diag.h"
23 INT setPP(char, int);
24 INT parport_init();
25 INT parport_start_block();
26 INT parport_poll_live();
27 INT parport_poll_dead();
28 bool block_sig;
29 #if 0
30 struct timespec timer_start;
31 static timeval t_0;
32 #endif
33 static unsigned int block_nr;
34 
35 struct readout_module parport_module = {
36  parport_init, // init
37  NULL, // exit
38  NULL, // pre_bor
39  NULL, // bor
40  NULL, // eor
41  parport_poll_live, // poll_live
42  parport_poll_dead, // poll_dead
43  parport_start_block, // start_block
44  NULL, // stop_block
45  NULL, // read
46 };
47 
48 /*
49  * parport_init
50  *
51  * Called at the beginning of the run
52  */
53 
54 INT setPP(char v, int usec) {
55 
56  outb(v,PARALLEL_PORT0);
57  //outb(v,PARALLEL_PORT1);
58 
59  return 0;
60 
61 }
62 
63 
64 INT parport_init()
65 {
66 
67  printf("Opening parallel port %x\t\n", PARALLEL_PORT0);
68  if (ioperm(PARALLEL_PORT0,3,1))
69  {
70  perror("PArallel POrt opening error\n");
71  return 1;
72  }
73  /*
74  int status = iopl( 3 );
75 
76  if (status < 0) {
77  diag_print(0, "Unable to get permission to access I/O ports\n");
78  }
79 
80  // turn off output
81  outb(0x1d, 0x3f2);
82  */
83 
84  block_nr = 0;
85 
86 #if 0
87  gettimeofday(&t_0,NULL);
88 #endif
89 
90  printf("Dummy master crate init\n");
91  return SUCCESS;
92 }
93 
94 /*
95  * parport_start_block
96  *
97  */
98 INT parport_start_block()
99 {
100 
101  block_sig = true;
102 #if 0
103  clock_gettime(CLOCK_REALTIME,&timer_start);
104 #endif
105  block_nr++;
106  printf("parport_start_block %i\n",block_nr);
107  //setPP(255, 1);
108 
109  // Send reset
110  setPP(1<<1, 1);
111  setPP(0, 1);
112 
113  // start new segment
114  setPP(1, 1);
115  setPP(0, 1);
116  return SUCCESS;
117 }
118 
119 /*
120  * parport_poll_live()
121  *
122  * Called periodically while a block is active; performs active readout.
123  *
124  * Returns:
125  * - ordinarily 0,
126  * - a request for a "soft stop" end-of-block, or
127  * - an error code
128  */
129 
130 INT parport_poll_live()
131 {
132 #if 0
133  struct timespec timer_now;
134  clock_gettime(CLOCK_REALTIME, &timer_now);
135  unsigned int time_elapse = (timer_now.tv_sec - timer_start.tv_sec) * 1000000000 +
136  (timer_now.tv_nsec - timer_start.tv_nsec);
137  printf("time elapse: %ld\n", time_elapse);
138  if (time_elapse > 2*1000*1000)
139  {
140  printf("end of block\n");
141  return FE_END_BLOCK;
142  }
143 #endif
144 
145  unsigned char p = inb(PARALLEL_PORT1);
146 
147 
148  if ( !(p & 0x40) )
149  {
150  printf("p=%i, 0x%x\n",p, p);
151  printf("end of block\n");
152  return FE_END_BLOCK;
153  }
154 
155 
156  return SUCCESS;
157 }
158 
159 INT parport_poll_dead()
160 {
161  //printf("Send to start block\n");
162  //return FE_NEED_START;
163  return 0;
164 }
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