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comparison light8/serport.i @ 0:45b12307c695

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Initial revision
author drewp
date Wed, 03 Jul 2002 09:37:57 +0000
parents
children 0b86bf6808f8
comparison
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-1:000000000000 0:45b12307c695
1 %module serport
2
3 %{
4 #include <sys/types.h>
5 #include <sys/stat.h>
6 #include <sys/ioctl.h>
7 #include <fcntl.h>
8 #include <linux/i2c.h>
9 #include <linux/i2c-dev.h>
10 #include <unistd.h>
11 %}
12
13
14 %typemap(python,in) __u8 {
15 if( !PyInt_Check($input)) {
16 PyErr_SetString(PyExc_TypeError,"not an integer");
17 return NULL;
18 }
19 $1 = ($type) PyInt_AsLong($input);
20 }
21
22 %typemap(python,out) __s32 {
23 $result = Py_BuildValue("i", ($type) $1);
24 }
25
26 %inline %{
27
28 __s32 i2c_smbus_write_byte(int file, __u8 value);
29 __s32 i2c_smbus_read_byte(int file);
30
31 PyObject *read_all_adc(int file) {
32 PyObject *t=PyTuple_New(4);
33
34 #define CHAN_TO_TUPLE_POS(chan,idx) i2c_smbus_write_byte(file, chan);\
35 PyTuple_SetItem(t,idx,PyInt_FromLong(i2c_smbus_read_byte(file)));
36
37 /*
38 these are shuffled here to match the way the pots read in. in
39 the returned tuple, 0=left pot..3=right pot.
40 */
41 CHAN_TO_TUPLE_POS(1,0)
42 CHAN_TO_TUPLE_POS(2,1)
43 CHAN_TO_TUPLE_POS(3,2)
44 CHAN_TO_TUPLE_POS(0,3)
45
46 return t;
47
48 }
49
50 %}