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1 %module serport
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2
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3 %{
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4 #include <sys/types.h>
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5 #include <sys/stat.h>
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6 #include <sys/ioctl.h>
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7 #include <fcntl.h>
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8 #include <linux/i2c.h>
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9 #include <linux/i2c-dev.h>
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10 #include <unistd.h>
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11 %}
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12
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13
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14 %typemap(python,in) __u8 {
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15 if( !PyInt_Check($input)) {
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16 PyErr_SetString(PyExc_TypeError,"not an integer");
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17 return NULL;
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18 }
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19 $1 = ($type) PyInt_AsLong($input);
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20 }
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21
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22 %typemap(python,out) __s32 {
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23 $result = Py_BuildValue("i", ($type) $1);
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24 }
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25
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26 %inline %{
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27
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28 __s32 i2c_smbus_write_byte(int file, __u8 value);
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29 __s32 i2c_smbus_read_byte(int file);
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30
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31 PyObject *read_all_adc(int file) {
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32 PyObject *t=PyTuple_New(4);
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33
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34 #define CHAN_TO_TUPLE_POS(chan,idx) i2c_smbus_write_byte(file, chan);\
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35 PyTuple_SetItem(t,idx,PyInt_FromLong(i2c_smbus_read_byte(file)));
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36
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76
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37 /*
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38 these are shuffled here to match the way the pots read in. in
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39 the returned tuple, 0=left pot..3=right pot.
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40 */
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41 CHAN_TO_TUPLE_POS(1,0)
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42 CHAN_TO_TUPLE_POS(2,1)
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43 CHAN_TO_TUPLE_POS(3,2)
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44 CHAN_TO_TUPLE_POS(0,3)
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45
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46 return t;
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47
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48 }
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49
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50 %}
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