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annotate light8/parport.c @ 115:f0e27aa8f0f5
attempt to make a better exception with getparport(). didn't help, afaict
| author | drewp |
|---|---|
| date | Fri, 13 Jun 2003 06:13:31 +0000 |
| parents | f974a462133f |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include <stdio.h> |
| 2 #include <stdlib.h> | |
| 3 #include <unistd.h> | |
| 4 #include <sys/ioctl.h> | |
| 5 #include <asm/io.h> | |
| 6 #include <fcntl.h> | |
| 7 #include <Python.h> | |
| 8 | |
|
115
f0e27aa8f0f5
attempt to make a better exception with getparport(). didn't help, afaict
drewp
parents:
4
diff
changeset
|
9 int getparport() { |
| 0 | 10 if( ioperm(888,3,1) ) { |
| 11 printf("Couldn't get parallel port at 888-890\n"); | |
| 12 | |
| 13 // the following doesn't have any effect! | |
| 14 PyErr_SetString(PyExc_IOError,"Couldn't get parallel port at 888-890"); | |
|
115
f0e27aa8f0f5
attempt to make a better exception with getparport(). didn't help, afaict
drewp
parents:
4
diff
changeset
|
15 return 0; |
| 0 | 16 } |
|
115
f0e27aa8f0f5
attempt to make a better exception with getparport(). didn't help, afaict
drewp
parents:
4
diff
changeset
|
17 return 1; |
| 0 | 18 } |
| 19 | |
| 20 void outdata(unsigned char val) { | |
| 21 outb(val,888); | |
| 22 } | |
| 23 | |
| 24 void outcontrol( unsigned char val ) { | |
| 25 outb(val,890); | |
| 26 } | |
| 27 | |
| 28 void outbyte( unsigned char val ) { | |
| 29 // set data, raise clock, lower clock | |
| 30 outdata(val); | |
| 31 outcontrol(2); | |
| 32 outcontrol(2); | |
| 33 outcontrol(2); | |
| 34 outcontrol(2); | |
| 35 outcontrol(2); | |
| 36 outcontrol(2); | |
| 37 outcontrol(2); | |
| 38 outcontrol(2); | |
| 39 outcontrol(2); | |
| 40 outcontrol(2); | |
| 41 outcontrol(2); | |
| 42 outcontrol(2); | |
| 43 outcontrol(2); | |
| 44 outcontrol(2); | |
| 45 outcontrol(2); | |
| 46 outcontrol(2); | |
| 47 outcontrol(2); | |
| 48 outcontrol(2); | |
| 49 outcontrol(2); | |
| 50 outcontrol(2); | |
| 51 outcontrol(2); | |
| 52 outcontrol(2); | |
| 53 outcontrol(2); | |
| 54 outcontrol(2); | |
| 55 outcontrol(2); | |
| 56 outcontrol(2); | |
| 57 outcontrol(3); | |
| 58 } | |
| 59 void outstart() { | |
| 60 // send start code: pin 14 high, 5ms to let a dmx cycle finish, | |
| 61 // then pin14 low (pin1 stays low) | |
| 62 outcontrol(1); | |
| 63 usleep(5000); | |
| 64 outcontrol(3); | |
| 65 } |